mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs

   1 // Permission is hereby granted, free of charge, to any person obtaining
   2 // a copy of this software and associated documentation files (the
   3 // "Software"), to deal in the Software without restriction, including
   4 // without limitation the rights to use, copy, modify, merge, publish,
   5 // distribute, sublicense, and/or sell copies of the Software, and to
   6 // permit persons to whom the Software is furnished to do so, subject to
   7 // the following conditions:
   8 //
   9 // The above copyright notice and this permission notice shall be
  10 // included in all copies or substantial portions of the Software.
  11 //
  12 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  13 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  14 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  15 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  16 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  17 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  18 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  19 //
  20 // Copyright (c) 2004-2006 Novell, Inc.
  21 //
  22 // Authors:
  23 //      Peter Bartok    pbartok@novell.com
  24 //
  25 //
  26
  27 // NOTE:
  28 //      This driver understands the following environment variables: (Set the var to enable feature)
  29 //
  30 //      MONO_XEXCEPTIONS        = throw an exception when a X11 error is encountered;
  31 //                                by default a message is displayed but execution continues
  32 //
  33 //      MONO_XSYNC              = perform all X11 commands synchronous; this is slower but
  34 //                                helps in debugging errors
  35 //
  36
  37 // NOT COMPLETE
  38
  39 // define to log Window handles and relationships to stdout
  40 #undef DriverDebug
  41
  42 // Extra detailed debug
  43 #undef DriverDebugExtra
  44 #undef DriverDebugParent
  45 #undef DriverDebugCreate
  46 #undef DriverDebugDestroy
  47 #undef DriverDebugThreads
  48 #undef DriverDebugXEmbed
  49
  50 //#define TRACE
  51 //#define DEBUG
  52
  53 using System;
  54 using System.ComponentModel;
  55 using System.Collections;
  56 using System.Diagnostics;
  57 using System.Drawing;
  58 using System.Drawing.Drawing2D;
  59 using System.Drawing.Imaging;
  60 using System.IO;
  61 using System.Net;
  62 using System.Net.Sockets;
  63 using System.Reflection;
  64 using System.Runtime.InteropServices;
  65 using System.Runtime.Serialization;
  66 using System.Runtime.Serialization.Formatters.Binary;
  67 using System.Text;
  68 using System.Threading;
  69
  70 // Only do the poll when building with mono for now
  71 #if __MonoCS__
  72 using Mono.Unix.Native;
  73 #endif
  74
  75 /// X11 Version
  76 namespace System.Windows.Forms {
  77         internal class XplatUIX11 : XplatUIDriver {
  78                 #region Local Variables
  79                 // General
  80                 static volatile XplatUIX11      Instance;
  81                 static int              RefCount;
  82                 static object           XlibLock;               // Our locking object
  83                 static bool             themes_enabled;
  84
  85                 // General X11
  86                 static IntPtr           DisplayHandle;          // X11 handle to display
  87                 static int              ScreenNo;               // Screen number used
  88                 static IntPtr           DefaultColormap;        // Colormap for screen
  89                 static IntPtr           CustomVisual;           // Visual for window creation
  90                 static IntPtr           CustomColormap;         // Colormap for window creation
  91                 static IntPtr           RootWindow;             // Handle of the root window for the screen/display
  92                 static IntPtr           FosterParent;           // Container to hold child windows until their parent exists
  93                 static XErrorHandler    ErrorHandler;           // Error handler delegate
  94                 static bool             ErrorExceptions;        // Throw exceptions on X errors
  95                 int                     render_major_opcode;
  96                 int                     render_first_event;
  97                 int                     render_first_error;
  98
  99                 // Clipboard
 100                 static IntPtr           ClipMagic;
 101                 static ClipboardData    Clipboard;              // Our clipboard
 102
 103                 // Communication
 104                 static IntPtr           PostAtom;               // PostMessage atom
 105                 static IntPtr           AsyncAtom;              // Support for async messages
 106
 107                 // Message Loop
 108                 static Hashtable        MessageQueues;          // Holds our thread-specific XEventQueues
 109                 static ArrayList        unattached_timer_list; // holds timers that are enabled but not attached to a window.
 110                 #if __MonoCS__                                          //
 111                 static Pollfd[]         pollfds;                // For watching the X11 socket
 112                 static bool wake_waiting;
 113                 static object wake_waiting_lock = new object ();
 114                 #endif                                                  //
 115                 static X11Keyboard      Keyboard;               //
 116                 static X11Dnd           Dnd;
 117                 static Socket           listen;                 //
 118                 static Socket           wake;                   //
 119                 static Socket           wake_receive;           //
 120                 static byte[]           network_buffer;         //
 121                 static bool             detectable_key_auto_repeat;
 122
 123                 // Focus tracking
 124                 static IntPtr           ActiveWindow;           // Handle of the active window
 125                 static IntPtr           FocusWindow;            // Handle of the window with keyboard focus (if any)
 126
 127                 // Modality support
 128                 static Stack            ModalWindows;           // Stack of our modal windows
 129
 130                 // Systray
 131                 static IntPtr           SystrayMgrWindow;       // Handle of the Systray Manager window
 132
 133                 // Cursors
 134                 static IntPtr           LastCursorWindow;       // The last window we set the cursor on
 135                 static IntPtr           LastCursorHandle;       // The handle that was last set on LastCursorWindow
 136                 static IntPtr           OverrideCursorHandle;   // The cursor that is set to override any other cursors
 137
 138                 // Caret
 139                 static CaretStruct      Caret;                  //
 140
 141                 // Last window containing the pointer
 142                 static IntPtr           LastPointerWindow;      // The last window containing the pointer
 143
 144                 // Our atoms
 145                 static IntPtr WM_PROTOCOLS;
 146                 static IntPtr WM_DELETE_WINDOW;
 147                 static IntPtr WM_TAKE_FOCUS;
 148                 //static IntPtr _NET_SUPPORTED;
 149                 //static IntPtr _NET_CLIENT_LIST;
 150                 //static IntPtr _NET_NUMBER_OF_DESKTOPS;
 151                 static IntPtr _NET_DESKTOP_GEOMETRY;
 152                 //static IntPtr _NET_DESKTOP_VIEWPORT;
 153                 static IntPtr _NET_CURRENT_DESKTOP;
 154                 //static IntPtr _NET_DESKTOP_NAMES;
 155                 static IntPtr _NET_ACTIVE_WINDOW;
 156                 static IntPtr _NET_WORKAREA;
 157                 //static IntPtr _NET_SUPPORTING_WM_CHECK;
 158                 //static IntPtr _NET_VIRTUAL_ROOTS;
 159                 //static IntPtr _NET_DESKTOP_LAYOUT;
 160                 //static IntPtr _NET_SHOWING_DESKTOP;
 161                 //static IntPtr _NET_CLOSE_WINDOW;
 162                 //static IntPtr _NET_MOVERESIZE_WINDOW;
 163                 static IntPtr _NET_WM_MOVERESIZE;
 164                 //static IntPtr _NET_RESTACK_WINDOW;
 165                 //static IntPtr _NET_REQUEST_FRAME_EXTENTS;
 166                 static IntPtr _NET_WM_NAME;
 167                 //static IntPtr _NET_WM_VISIBLE_NAME;
 168                 //static IntPtr _NET_WM_ICON_NAME;
 169                 //static IntPtr _NET_WM_VISIBLE_ICON_NAME;
 170                 //static IntPtr _NET_WM_DESKTOP;
 171                 static IntPtr _NET_WM_WINDOW_TYPE;
 172                 static IntPtr _NET_WM_STATE;
 173                 //static IntPtr _NET_WM_ALLOWED_ACTIONS;
 174                 //static IntPtr _NET_WM_STRUT;
 175                 //static IntPtr _NET_WM_STRUT_PARTIAL;
 176                 //static IntPtr _NET_WM_ICON_GEOMETRY;
 177                 static IntPtr _NET_WM_ICON;
 178                 //static IntPtr _NET_WM_PID;
 179                 //static IntPtr _NET_WM_HANDLED_ICONS;
 180                 static IntPtr _NET_WM_USER_TIME;
 181                 static IntPtr _NET_FRAME_EXTENTS;
 182                 //static IntPtr _NET_WM_PING;
 183                 //static IntPtr _NET_WM_SYNC_REQUEST;
 184                 static IntPtr _NET_SYSTEM_TRAY_S;
 185                 //static IntPtr _NET_SYSTEM_TRAY_ORIENTATION;
 186                 static IntPtr _NET_SYSTEM_TRAY_OPCODE;
 187                 static IntPtr _NET_WM_STATE_MAXIMIZED_HORZ;
 188                 static IntPtr _NET_WM_STATE_MAXIMIZED_VERT;
 189                 static IntPtr _XEMBED;
 190                 static IntPtr _XEMBED_INFO;
 191                 static IntPtr _MOTIF_WM_HINTS;
 192                 static IntPtr _NET_WM_STATE_SKIP_TASKBAR;
 193                 static IntPtr _NET_WM_STATE_ABOVE;
 194                 static IntPtr _NET_WM_STATE_MODAL;
 195                 static IntPtr _NET_WM_STATE_HIDDEN;
 196                 static IntPtr _NET_WM_CONTEXT_HELP;
 197                 static IntPtr _NET_WM_WINDOW_OPACITY;
 198                 //static IntPtr _NET_WM_WINDOW_TYPE_DESKTOP;
 199                 //static IntPtr _NET_WM_WINDOW_TYPE_DOCK;
 200                 //static IntPtr _NET_WM_WINDOW_TYPE_TOOLBAR;
 201                 //static IntPtr _NET_WM_WINDOW_TYPE_MENU;
 202                 static IntPtr _NET_WM_WINDOW_TYPE_UTILITY;
 203                 //static IntPtr _NET_WM_WINDOW_TYPE_SPLASH;
 204                 // static IntPtr _NET_WM_WINDOW_TYPE_DIALOG;
 205                 static IntPtr _NET_WM_WINDOW_TYPE_NORMAL;
 206                 static IntPtr CLIPBOARD;
 207                 static IntPtr PRIMARY;
 208                 //static IntPtr DIB;
 209                 static IntPtr OEMTEXT;
 210                 static IntPtr UTF8_STRING;
 211                 static IntPtr UTF16_STRING;
 212                 static IntPtr RICHTEXTFORMAT;
 213                 static IntPtr TARGETS;
 214
 215                 // mouse hover message generation
 216                 static HoverStruct      HoverState;             //
 217
 218                 // double click message generation
 219                 static ClickStruct      ClickPending;           //
 220
 221                 // Support for mouse grab
 222                 static GrabStruct       Grab;                   //
 223
 224                 // State
 225                 Point           mouse_position;         // Last position of mouse, in screen coords
 226                 internal static MouseButtons    MouseState;             // Last state of mouse buttons
 227                 internal static bool in_doevents;
 228                 // 'Constants'
 229                 static int              DoubleClickInterval;    // msec; max interval between clicks to count as double click
 230
 231                 const EventMask SelectInputMask = (EventMask.ButtonPressMask |
 232                                                    EventMask.ButtonReleaseMask |
 233                                                    EventMask.KeyPressMask |
 234                                                    EventMask.KeyReleaseMask |
 235                                                    EventMask.EnterWindowMask |
 236                                                    EventMask.LeaveWindowMask |
 237                                                    EventMask.ExposureMask |
 238                                                    EventMask.FocusChangeMask |
 239                                                    EventMask.PointerMotionMask |
 240                                                    EventMask.PointerMotionHintMask |
 241                                                    EventMask.SubstructureNotifyMask);
 242
 243                 static readonly object lockobj = new object ();
 244
 245                 // messages WaitForHwndMwssage is waiting on
 246                 static Hashtable        messageHold;
 247
 248                 #endregion      // Local Variables
 249                 #region Constructors
 250                 XplatUIX11()
 251                 {
 252                         // Handle singleton stuff first
 253                         RefCount = 0;
 254                         in_doevents = false;
 255
 256                         // Now regular initialization
 257                         XlibLock = new object ();
 258                         X11Keyboard.XlibLock = XlibLock;
 259                         MessageQueues = Hashtable.Synchronized (new Hashtable(7));
 260                         unattached_timer_list = ArrayList.Synchronized (new ArrayList (3));
 261                         messageHold = Hashtable.Synchronized (new Hashtable(3));
 262                         Clipboard = new ClipboardData ();
 263                         XInitThreads();
 264
 265                         ErrorExceptions = false;
 266
 267                         // X11 Initialization
 268                         SetDisplay(XOpenDisplay(IntPtr.Zero));
 269                         X11DesktopColors.Initialize();
 270
 271
 272                         // Disable keyboard autorepeat
 273                         try {
 274                                 XkbSetDetectableAutoRepeat (DisplayHandle, true,  IntPtr.Zero);
 275                                 detectable_key_auto_repeat = true;
 276                         } catch {
 277                                 Console.Error.WriteLine ("Could not disable keyboard auto repeat, will attempt to disable manually.");
 278                                 detectable_key_auto_repeat = false;
 279                         }
 280
 281                         // Handle any upcoming errors; we re-set it here, X11DesktopColor stuff might have stolen it (gtk does)
 282                         ErrorHandler = new XErrorHandler(HandleError);
 283                         XSetErrorHandler(ErrorHandler);
 284                 }
 285
 286                 ~XplatUIX11() {
 287                         // Remove our display handle from S.D
 288                         Graphics.FromHdcInternal (IntPtr.Zero);
 289                 }
 290
 291                 #endregion      // Constructors
 292
 293                 #region Singleton Specific Code
 294                 public static XplatUIX11 GetInstance() {
 295                         lock (lockobj) {
 296                                 if (Instance == null) {
 297                                         Instance=new XplatUIX11();
 298                                 }
 299                                 RefCount++;
 300                         }
 301                         return Instance;
 302                 }
 303
 304                 public int Reference {
 305                         get {
 306                                 return RefCount;
 307                         }
 308                 }
 309                 #endregion
 310
 311                 #region Internal Properties
 312                 internal static IntPtr Display {
 313                         get {
 314                                 return DisplayHandle;
 315                         }
 316
 317                         set {
 318                                 XplatUIX11.GetInstance().SetDisplay(value);
 319                         }
 320                 }
 321
 322                 internal static int Screen {
 323                         get {
 324                                 return ScreenNo;
 325                         }
 326
 327                         set {
 328                                 ScreenNo = value;
 329                         }
 330                 }
 331
 332                 internal static IntPtr RootWindowHandle {
 333                         get {
 334                                 return RootWindow;
 335                         }
 336
 337                         set {
 338                                 RootWindow = value;
 339                         }
 340                 }
 341
 342                 internal static IntPtr Visual {
 343                         get {
 344                                 return CustomVisual;
 345                         }
 346
 347                         set {
 348                                 CustomVisual = value;
 349                         }
 350                 }
 351
 352                 internal static IntPtr ColorMap {
 353                         get {
 354                                 return CustomColormap;
 355                         }
 356
 357                         set {
 358                                 CustomColormap = value;
 359                         }
 360                 }
 361
 362 #if DEBUG_shana
 363                 internal static IntPtr DefaultColorMap {
 364                         get {
 365                                 return DefaultColormap;
 366                         }
 367                 }
 368 #endif
 369                 #endregion
 370
 371                 #region XExceptionClass
 372                 internal class XException : ApplicationException {
 373                         IntPtr          Display;
 374                         IntPtr          ResourceID;
 375                         IntPtr          Serial;
 376                         XRequest        RequestCode;
 377                         byte            ErrorCode;
 378                         byte            MinorCode;
 379
 380                         public XException(IntPtr Display, IntPtr ResourceID, IntPtr Serial, byte ErrorCode, XRequest RequestCode, byte MinorCode) {
 381                                 this.Display = Display;
 382                                 this.ResourceID = ResourceID;
 383                                 this.Serial = Serial;
 384                                 this.RequestCode = RequestCode;
 385                                 this.ErrorCode = ErrorCode;
 386                                 this.MinorCode = MinorCode;
 387                         }
 388
 389                         public override string Message {
 390                                 get {
 391                                         return GetMessage(Display, ResourceID, Serial, ErrorCode, RequestCode, MinorCode);
 392                                 }
 393                         }
 394
 395                         public static string GetMessage(IntPtr Display, IntPtr ResourceID, IntPtr Serial, byte ErrorCode, XRequest RequestCode, byte MinorCode) {
 396                                 StringBuilder   sb;
 397                                 string          x_error_text;
 398                                 string          error;
 399                                 string          hwnd_text;
 400                                 string          control_text;
 401                                 Hwnd            hwnd;
 402                                 Control         c;
 403
 404                                 sb = new StringBuilder(160);
 405                                 XGetErrorText(Display, ErrorCode, sb, sb.Capacity);
 406                                 x_error_text = sb.ToString();
 407                                 hwnd = Hwnd.ObjectFromHandle(ResourceID);
 408                                 if (hwnd != null) {
 409                                         hwnd_text = hwnd.ToString();
 410                                         c = Control.FromHandle(hwnd.Handle);
 411                                         if (c != null) {
 412                                                 control_text = c.ToString();
 413                                         } else {
 414                                                 control_text = String.Format("<handle {0:X} non-existant>", hwnd.Handle.ToInt32());
 415                                         }
 416                                 } else {
 417                                         hwnd_text = "<null>";
 418                                         control_text = "<null>";
 419                                 }
 420
 421
 422                                 error = String.Format("\n  Error: {0}\n  Request:     {1:D} ({2})\n  Resource ID: 0x{3:X}\n  Serial:      {4}\n  Hwnd:        {5}\n  Control:     {6}", x_error_text, RequestCode, MinorCode, ResourceID.ToInt32(), Serial, hwnd_text, control_text);
 423                                 return error;
 424                         }
 425                 }
 426                 #endregion      // XExceptionClass
 427
 428                 #region Internal Methods
 429                 internal void SetDisplay(IntPtr display_handle)
 430                 {
 431                         if (display_handle != IntPtr.Zero) {
 432                                 Hwnd    hwnd;
 433
 434                                 if ((DisplayHandle != IntPtr.Zero) && (FosterParent != IntPtr.Zero)) {
 435                                         hwnd = Hwnd.ObjectFromHandle(FosterParent);
 436                                         XDestroyWindow(DisplayHandle, FosterParent);
 437                                         hwnd.Dispose();
 438                                 }
 439
 440                                 if (DisplayHandle != IntPtr.Zero) {
 441                                         XCloseDisplay(DisplayHandle);
 442                                 }
 443
 444                                 DisplayHandle=display_handle;
 445
 446                                 // We need to tell System.Drawing our DisplayHandle. FromHdcInternal has
 447                                 // been hacked to do this for us.
 448                                 Graphics.FromHdcInternal (DisplayHandle);
 449
 450                                 // query for the render extension so
 451                                 // we can ignore the spurious
 452                                 // BadPicture errors that are
 453                                 // generated by cairo/render.
 454                                 XQueryExtension (DisplayHandle, "RENDER",
 455                                                  ref render_major_opcode, ref render_first_event, ref render_first_error);
 456
 457                                 // Debugging support
 458                                 if (Environment.GetEnvironmentVariable ("MONO_XSYNC") != null) {
 459                                         XSynchronize(DisplayHandle, true);
 460                                 }
 461
 462                                 if (Environment.GetEnvironmentVariable ("MONO_XEXCEPTIONS") != null) {
 463                                         ErrorExceptions = true;
 464                                 }
 465
 466                                 // Generic X11 setup
 467                                 ScreenNo = XDefaultScreen(DisplayHandle);
 468                                 RootWindow = XRootWindow(DisplayHandle, ScreenNo);
 469                                 DefaultColormap = XDefaultColormap(DisplayHandle, ScreenNo);
 470
 471                                 // Create the foster parent
 472                                 // it is important that border_width is kept in synch with the other XCreateWindow calls
 473                                 FosterParent=XCreateSimpleWindow(DisplayHandle, RootWindow, 0, 0, 1, 1, 0, UIntPtr.Zero, UIntPtr.Zero);
 474                                 if (FosterParent==IntPtr.Zero) {
 475                                         Console.WriteLine("XplatUIX11 Constructor failed to create FosterParent");
 476                                 }
 477
 478                                 DebugHelper.WriteLine ("FosterParent created 0x{0:x}", FosterParent.ToInt32());
 479
 480                                 hwnd = new Hwnd();
 481                                 hwnd.Queue = ThreadQueue(Thread.CurrentThread);
 482                                 hwnd.WholeWindow = FosterParent;
 483                                 hwnd.ClientWindow = FosterParent;
 484
 485                                 // Create a HWND for RootWIndow as well, so our queue doesn't eat the events
 486                                 hwnd = new Hwnd();
 487                                 hwnd.Queue = ThreadQueue(Thread.CurrentThread);
 488                                 hwnd.whole_window = RootWindow;
 489                                 hwnd.ClientWindow = RootWindow;
 490
 491                                 // For sleeping on the X11 socket
 492                                 listen = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
 493                                 IPEndPoint ep = new IPEndPoint(IPAddress.Loopback, 0);
 494                                 listen.Bind(ep);
 495                                 listen.Listen(1);
 496
 497                                 // To wake up when a timer is ready
 498                                 network_buffer = new byte[10];
 499
 500                                 wake = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.IP);
 501                                 wake.Connect(listen.LocalEndPoint);
 502
 503                                 // Make this non-blocking, so it doesn't
 504                                 // deadlock if too many wakes are sent
 505                                 // before the wake_receive end is polled
 506                                 wake.Blocking = false;
 507
 508                                 wake_receive = listen.Accept();
 509
 510                                 #if __MonoCS__
 511                                 pollfds = new Pollfd [2];
 512                                 pollfds [0] = new Pollfd ();
 513                                 pollfds [0].fd = XConnectionNumber (DisplayHandle);
 514                                 pollfds [0].events = PollEvents.POLLIN;
 515
 516                                 pollfds [1] = new Pollfd ();
 517                                 pollfds [1].fd = wake_receive.Handle.ToInt32 ();
 518                                 pollfds [1].events = PollEvents.POLLIN;
 519                                 #endif
 520
 521                                 Keyboard = new X11Keyboard(DisplayHandle, FosterParent);
 522                                 Dnd = new X11Dnd (DisplayHandle, Keyboard);
 523
 524                                 DoubleClickInterval = 500;
 525
 526                                 HoverState.Interval = 500;
 527                                 HoverState.Timer = new Timer();
 528                                 HoverState.Timer.Enabled = false;
 529                                 HoverState.Timer.Interval = HoverState.Interval;
 530                                 HoverState.Timer.Tick += new EventHandler(MouseHover);
 531                                 HoverState.Size = new Size(4, 4);
 532                                 HoverState.X = -1;
 533                                 HoverState.Y = -1;
 534
 535                                 ActiveWindow = IntPtr.Zero;
 536                                 FocusWindow = IntPtr.Zero;
 537                                 ModalWindows = new Stack(3);
 538
 539                                 MouseState = MouseButtons.None;
 540                                 mouse_position = new Point(0, 0);
 541
 542                                 Caret.Timer = new Timer();
 543                                 Caret.Timer.Interval = 500;             // FIXME - where should this number come from?
 544                                 Caret.Timer.Tick += new EventHandler(CaretCallback);
 545
 546                                 SetupAtoms();
 547
 548                                 // Grab atom changes off the root window to catch certain WM events
 549                                 XSelectInput(DisplayHandle, RootWindow, new IntPtr ((int) (EventMask.PropertyChangeMask | Keyboard.KeyEventMask)));
 550
 551                                 // Handle any upcoming errors
 552                                 ErrorHandler = new XErrorHandler(HandleError);
 553                                 XSetErrorHandler(ErrorHandler);
 554                         } else {
 555                                 throw new ArgumentNullException("Display", "Could not open display (X-Server required. Check you DISPLAY environment variable)");
 556                         }
 557                 }
 558                 #endregion      // Internal Methods
 559
 560                 #region Methods
 561                 [Conditional ("DriverDebug")]
 562                 static void DriverDebug (string format, params object [] args)
 563                 {
 564                         Console.WriteLine (String.Format (format, args));
 565                 }
 566
 567                 int unixtime() {
 568                         TimeSpan t = (DateTime.UtcNow - new DateTime(1970, 1, 1));
 569
 570                         return (int) t.TotalSeconds;
 571                 }
 572
 573                 static void SetupAtoms() {
 574                         // make sure this array stays in sync with the statements below
 575                         string [] atom_names = new string[] {
 576                                 "WM_PROTOCOLS",
 577                                 "WM_DELETE_WINDOW",
 578                                 "WM_TAKE_FOCUS",
 579                                 //"_NET_SUPPORTED",
 580                                 //"_NET_CLIENT_LIST",
 581                                 //"_NET_NUMBER_OF_DESKTOPS",
 582                                 "_NET_DESKTOP_GEOMETRY",
 583                                 //"_NET_DESKTOP_VIEWPORT",
 584                                 "_NET_CURRENT_DESKTOP",
 585                                 //"_NET_DESKTOP_NAMES",
 586                                 "_NET_ACTIVE_WINDOW",
 587                                 "_NET_WORKAREA",
 588                                 //"_NET_SUPPORTING_WM_CHECK",
 589                                 //"_NET_VIRTUAL_ROOTS",
 590                                 //"_NET_DESKTOP_LAYOUT",
 591                                 //"_NET_SHOWING_DESKTOP",
 592                                 //"_NET_CLOSE_WINDOW",
 593                                 //"_NET_MOVERESIZE_WINDOW",
 594                                 "_NET_WM_MOVERESIZE",
 595                                 //"_NET_RESTACK_WINDOW",
 596                                 //"_NET_REQUEST_FRAME_EXTENTS",
 597                                 "_NET_WM_NAME",
 598                                 //"_NET_WM_VISIBLE_NAME",
 599                                 //"_NET_WM_ICON_NAME",
 600                                 //"_NET_WM_VISIBLE_ICON_NAME",
 601                                 //"_NET_WM_DESKTOP",
 602                                 "_NET_WM_WINDOW_TYPE",
 603                                 "_NET_WM_STATE",
 604                                 //"_NET_WM_ALLOWED_ACTIONS",
 605                                 //"_NET_WM_STRUT",
 606                                 //"_NET_WM_STRUT_PARTIAL",
 607                                 //"_NET_WM_ICON_GEOMETRY",
 608                                 "_NET_WM_ICON",
 609                                 //"_NET_WM_PID",
 610                                 //"_NET_WM_HANDLED_ICONS",
 611                                 "_NET_WM_USER_TIME",
 612                                 "_NET_FRAME_EXTENTS",
 613                                 //"_NET_WM_PING",
 614                                 //"_NET_WM_SYNC_REQUEST",
 615                                 "_NET_SYSTEM_TRAY_OPCODE",
 616                                 //"_NET_SYSTEM_TRAY_ORIENTATION",
 617                                 "_NET_WM_STATE_MAXIMIZED_HORZ",
 618                                 "_NET_WM_STATE_MAXIMIZED_VERT",
 619                                 "_NET_WM_STATE_HIDDEN",
 620                                 "_XEMBED",
 621                                 "_XEMBED_INFO",
 622                                 "_MOTIF_WM_HINTS",
 623                                 "_NET_WM_STATE_SKIP_TASKBAR",
 624                                 "_NET_WM_STATE_ABOVE",
 625                                 "_NET_WM_STATE_MODAL",
 626                                 "_NET_WM_CONTEXT_HELP",
 627                                 "_NET_WM_WINDOW_OPACITY",
 628                                 //"_NET_WM_WINDOW_TYPE_DESKTOP",
 629                                 //"_NET_WM_WINDOW_TYPE_DOCK",
 630                                 //"_NET_WM_WINDOW_TYPE_TOOLBAR",
 631                                 //"_NET_WM_WINDOW_TYPE_MENU",
 632                                 "_NET_WM_WINDOW_TYPE_UTILITY",
 633                                 // "_NET_WM_WINDOW_TYPE_DIALOG",
 634                                 //"_NET_WM_WINDOW_TYPE_SPLASH",
 635                                 "_NET_WM_WINDOW_TYPE_NORMAL",
 636                                 "CLIPBOARD",
 637                                 "PRIMARY",
 638                                 "COMPOUND_TEXT",
 639                                 "UTF8_STRING",
 640                                 "UTF16_STRING",
 641                                 "RICHTEXTFORMAT",
 642                                 "TARGETS",
 643                                 "_SWF_AsyncAtom",
 644                                 "_SWF_PostMessageAtom",
 645                                 "_SWF_HoverAtom" };
 646
 647                         IntPtr[] atoms = new IntPtr [atom_names.Length];;
 648
 649                         XInternAtoms (DisplayHandle, atom_names, atom_names.Length, false, atoms);
 650
 651                         int off = 0;
 652                         WM_PROTOCOLS = atoms [off++];
 653                         WM_DELETE_WINDOW = atoms [off++];
 654                         WM_TAKE_FOCUS = atoms [off++];
 655                         //_NET_SUPPORTED = atoms [off++];
 656                         //_NET_CLIENT_LIST = atoms [off++];
 657                         //_NET_NUMBER_OF_DESKTOPS = atoms [off++];
 658                         _NET_DESKTOP_GEOMETRY = atoms [off++];
 659                         //_NET_DESKTOP_VIEWPORT = atoms [off++];
 660                         _NET_CURRENT_DESKTOP = atoms [off++];
 661                         //_NET_DESKTOP_NAMES = atoms [off++];
 662                         _NET_ACTIVE_WINDOW = atoms [off++];
 663                         _NET_WORKAREA = atoms [off++];
 664                         //_NET_SUPPORTING_WM_CHECK = atoms [off++];
 665                         //_NET_VIRTUAL_ROOTS = atoms [off++];
 666                         //_NET_DESKTOP_LAYOUT = atoms [off++];
 667                         //_NET_SHOWING_DESKTOP = atoms [off++];
 668                         //_NET_CLOSE_WINDOW = atoms [off++];
 669                         //_NET_MOVERESIZE_WINDOW = atoms [off++];
 670                         _NET_WM_MOVERESIZE = atoms [off++];
 671                         //_NET_RESTACK_WINDOW = atoms [off++];
 672                         //_NET_REQUEST_FRAME_EXTENTS = atoms [off++];
 673                         _NET_WM_NAME = atoms [off++];
 674                         //_NET_WM_VISIBLE_NAME = atoms [off++];
 675                         //_NET_WM_ICON_NAME = atoms [off++];
 676                         //_NET_WM_VISIBLE_ICON_NAME = atoms [off++];
 677                         //_NET_WM_DESKTOP = atoms [off++];
 678                         _NET_WM_WINDOW_TYPE = atoms [off++];
 679                         _NET_WM_STATE = atoms [off++];
 680                         //_NET_WM_ALLOWED_ACTIONS = atoms [off++];
 681                         //_NET_WM_STRUT = atoms [off++];
 682                         //_NET_WM_STRUT_PARTIAL = atoms [off++];
 683                         //_NET_WM_ICON_GEOMETRY = atoms [off++];
 684                         _NET_WM_ICON = atoms [off++];
 685                         //_NET_WM_PID = atoms [off++];
 686                         //_NET_WM_HANDLED_ICONS = atoms [off++];
 687                         _NET_WM_USER_TIME = atoms [off++];
 688                         _NET_FRAME_EXTENTS = atoms [off++];
 689                         //_NET_WM_PING = atoms [off++];
 690                         //_NET_WM_SYNC_REQUEST = atoms [off++];
 691                         _NET_SYSTEM_TRAY_OPCODE = atoms [off++];
 692                         //_NET_SYSTEM_TRAY_ORIENTATION = atoms [off++];
 693                         _NET_WM_STATE_MAXIMIZED_HORZ = atoms [off++];
 694                         _NET_WM_STATE_MAXIMIZED_VERT = atoms [off++];
 695                         _NET_WM_STATE_HIDDEN = atoms [off++];
 696                         _XEMBED = atoms [off++];
 697                         _XEMBED_INFO = atoms [off++];
 698                         _MOTIF_WM_HINTS = atoms [off++];
 699                         _NET_WM_STATE_SKIP_TASKBAR = atoms [off++];
 700                         _NET_WM_STATE_ABOVE = atoms [off++];
 701                         _NET_WM_STATE_MODAL = atoms [off++];
 702                         _NET_WM_CONTEXT_HELP = atoms [off++];
 703                         _NET_WM_WINDOW_OPACITY = atoms [off++];
 704                         //_NET_WM_WINDOW_TYPE_DESKTOP = atoms [off++];
 705                         //_NET_WM_WINDOW_TYPE_DOCK = atoms [off++];
 706                         //_NET_WM_WINDOW_TYPE_TOOLBAR = atoms [off++];
 707                         //_NET_WM_WINDOW_TYPE_MENU = atoms [off++];
 708                         _NET_WM_WINDOW_TYPE_UTILITY = atoms [off++];
 709                         // _NET_WM_WINDOW_TYPE_DIALOG = atoms [off++];
 710                         //_NET_WM_WINDOW_TYPE_SPLASH = atoms [off++];
 711                         _NET_WM_WINDOW_TYPE_NORMAL = atoms [off++];
 712                         CLIPBOARD = atoms [off++];
 713                         PRIMARY = atoms [off++];
 714                         OEMTEXT = atoms [off++];
 715                         UTF8_STRING = atoms [off++];
 716                         UTF16_STRING = atoms [off++];
 717                         RICHTEXTFORMAT = atoms [off++];
 718                         TARGETS = atoms [off++];
 719                         AsyncAtom = atoms [off++];
 720                         PostAtom = atoms [off++];
 721                         HoverState.Atom = atoms [off++];
 722
 723                         //DIB = (IntPtr)Atom.XA_PIXMAP;
 724                         _NET_SYSTEM_TRAY_S = XInternAtom (DisplayHandle, "_NET_SYSTEM_TRAY_S" + ScreenNo.ToString(), false);
 725                 }
 726
 727                 void GetSystrayManagerWindow() {
 728                         XGrabServer(DisplayHandle);
 729                         SystrayMgrWindow = XGetSelectionOwner(DisplayHandle, _NET_SYSTEM_TRAY_S);
 730                         XUngrabServer(DisplayHandle);
 731                         XFlush(DisplayHandle);
 732                 }
 733
 734                 void SendNetWMMessage(IntPtr window, IntPtr message_type, IntPtr l0, IntPtr l1, IntPtr l2) {
 735                         SendNetWMMessage (window, message_type, l0, l1, l2, IntPtr.Zero);
 736                 }
 737
 738                 void SendNetWMMessage(IntPtr window, IntPtr message_type, IntPtr l0, IntPtr l1, IntPtr l2, IntPtr l3) {
 739                         XEvent  xev;
 740
 741                         xev = new XEvent();
 742                         xev.ClientMessageEvent.type = XEventName.ClientMessage;
 743                         xev.ClientMessageEvent.send_event = true;
 744                         xev.ClientMessageEvent.window = window;
 745                         xev.ClientMessageEvent.message_type = message_type;
 746                         xev.ClientMessageEvent.format = 32;
 747                         xev.ClientMessageEvent.ptr1 = l0;
 748                         xev.ClientMessageEvent.ptr2 = l1;
 749                         xev.ClientMessageEvent.ptr3 = l2;
 750                         xev.ClientMessageEvent.ptr4 = l3;
 751                         XSendEvent(DisplayHandle, RootWindow, false, new IntPtr ((int) (EventMask.SubstructureRedirectMask | EventMask.SubstructureNotifyMask)), ref xev);
 752                 }
 753
 754                 void SendNetClientMessage(IntPtr window, IntPtr message_type, IntPtr l0, IntPtr l1, IntPtr l2) {
 755                         XEvent  xev;
 756
 757                         xev = new XEvent();
 758                         xev.ClientMessageEvent.type = XEventName.ClientMessage;
 759                         xev.ClientMessageEvent.send_event = true;
 760                         xev.ClientMessageEvent.window = window;
 761                         xev.ClientMessageEvent.message_type = message_type;
 762                         xev.ClientMessageEvent.format = 32;
 763                         xev.ClientMessageEvent.ptr1 = l0;
 764                         xev.ClientMessageEvent.ptr2 = l1;
 765                         xev.ClientMessageEvent.ptr3 = l2;
 766                         XSendEvent(DisplayHandle, window, false, new IntPtr ((int)EventMask.NoEventMask), ref xev);
 767                 }
 768
 769                 // For WM_LBUTTONDOWN, WM_MBUTTONDOWN, WM_RBUTTONDOWN, WM_XBUTTONDOWN
 770                 //     WM_CREATE and WM_DESTROY causes
 771                 void SendParentNotify(IntPtr child, Msg cause, int x, int y)
 772                 {
 773                         Hwnd hwnd;
 774
 775                         if (child == IntPtr.Zero) {
 776                                 return;
 777                         }
 778
 779                         hwnd = Hwnd.GetObjectFromWindow (child);
 780
 781                         if (hwnd == null) {
 782                                 return;
 783                         }
 784
 785                         if (hwnd.Handle == IntPtr.Zero) {
 786                                 return;
 787                         }
 788
 789                         if (ExStyleSet ((int) hwnd.initial_ex_style, WindowExStyles.WS_EX_NOPARENTNOTIFY)) {
 790                                 return;
 791                         }
 792
 793                         if (hwnd.Parent == null) {
 794                                 return;
 795                         }
 796
 797                         if (hwnd.Parent.Handle == IntPtr.Zero) {
 798                                 return;
 799                         }
 800
 801                         if (cause == Msg.WM_CREATE || cause == Msg.WM_DESTROY) {
 802                                 SendMessage(hwnd.Parent.Handle, Msg.WM_PARENTNOTIFY, Control.MakeParam((int)cause, 0), child);
 803                         } else {
 804                                 SendMessage(hwnd.Parent.Handle, Msg.WM_PARENTNOTIFY, Control.MakeParam((int)cause, 0), Control.MakeParam(x, y));
 805                         }
 806
 807                         SendParentNotify (hwnd.Parent.Handle, cause, x, y);
 808                 }
 809
 810                 bool StyleSet (int s, WindowStyles ws)
 811                 {
 812                         return (s & (int)ws) == (int)ws;
 813                 }
 814
 815                 bool ExStyleSet (int ex, WindowExStyles exws)
 816                 {
 817                         return (ex & (int)exws) == (int)exws;
 818                 }
 819
 820                 internal static Rectangle TranslateClientRectangleToXClientRectangle (Hwnd hwnd)
 821                 {
 822                         return TranslateClientRectangleToXClientRectangle (hwnd, Control.FromHandle (hwnd.Handle));
 823                 }
 824
 825                 internal static Rectangle TranslateClientRectangleToXClientRectangle (Hwnd hwnd, Control ctrl)
 826                 {
 827                         /*
 828                          * If this is a form with no window manager, X is handling all the border and caption painting
 829                          * so remove that from the area (since the area we set of the window here is the part of the window
 830                          * we're painting in only)
 831                          */
 832                         Rectangle rect = hwnd.ClientRect;
 833                         Form form = ctrl as Form;
 834                         CreateParams cp = null;
 835
 836                         if (form != null)
 837                                 cp = form.GetCreateParams ();
 838
 839                         if (form != null && (form.window_manager == null && !cp.IsSet (WindowExStyles.WS_EX_TOOLWINDOW))) {
 840                                 Hwnd.Borders borders = Hwnd.GetBorders (cp, null);
 841                                 Rectangle xrect = rect;
 842
 843                                 xrect.Y -= borders.top;
 844                                 xrect.X -= borders.left;
 845                                 xrect.Width += borders.left + borders.right;
 846                                 xrect.Height += borders.top + borders.bottom;
 847
 848                                 rect = xrect;
 849                         }
 850
 851                         if (rect.Width < 1 || rect.Height < 1) {
 852                                 rect.Width = 1;
 853                                 rect.Height = 1;
 854                                 rect.X = -5;
 855                                 rect.Y = -5;
 856                         }
 857
 858                         return rect;
 859                 }
 860
 861                 internal static Size TranslateWindowSizeToXWindowSize (CreateParams cp)
 862                 {
 863                         return TranslateWindowSizeToXWindowSize (cp, new Size (cp.Width, cp.Height));
 864                 }
 865
 866                 internal static Size TranslateWindowSizeToXWindowSize (CreateParams cp, Size size)
 867                 {
 868                         /*
 869                          * If this is a form with no window manager, X is handling all the border and caption painting
 870                          * so remove that from the area (since the area we set of the window here is the part of the window
 871                          * we're painting in only)
 872                          */
 873                         Form form = cp.control as Form;
 874                         if (form != null && (form.window_manager == null && !cp.IsSet (WindowExStyles.WS_EX_TOOLWINDOW))) {
 875                                 Hwnd.Borders borders = Hwnd.GetBorders (cp, null);
 876                                 Size xrect = size;
 877
 878                                 xrect.Width -= borders.left + borders.right;
 879                                 xrect.Height -= borders.top + borders.bottom;
 880
 881                                 size = xrect;
 882                         }
 883                         if (size.Height == 0)
 884                                 size.Height = 1;
 885                         if (size.Width == 0)
 886                                 size.Width = 1;
 887                         return size;
 888                 }
 889
 890                 internal static Size TranslateXWindowSizeToWindowSize (CreateParams cp, int xWidth, int xHeight)
 891                 {
 892                         /*
 893                          * If this is a form with no window manager, X is handling all the border and caption painting
 894                          * so remove that from the area (since the area we set of the window here is the part of the window
 895                          * we're painting in only)
 896                          */
 897                         Size rect = new Size (xWidth, xHeight);
 898                         Form form = cp.control as Form;
 899                         if (form != null && (form.window_manager == null && !cp.IsSet (WindowExStyles.WS_EX_TOOLWINDOW))) {
 900                                 Hwnd.Borders borders = Hwnd.GetBorders (cp, null);
 901                                 Size xrect = rect;
 902
 903                                 xrect.Width += borders.left + borders.right;
 904                                 xrect.Height += borders.top + borders.bottom;
 905
 906                                 rect = xrect;
 907                         }
 908                         return rect;
 909                 }
 910
 911                 internal static Point GetTopLevelWindowLocation (Hwnd hwnd)
 912                 {
 913                         IntPtr dummy;
 914                         int x, y;
 915                         Hwnd.Borders frame;
 916
 917                         XTranslateCoordinates (DisplayHandle, hwnd.whole_window, RootWindow, 0, 0, out x, out y, out dummy);
 918                         frame = FrameExtents (hwnd.whole_window);
 919
 920                         x -= frame.left;
 921                         y -= frame.top;
 922
 923                         return new Point (x, y);
 924                 }
 925
 926                 void DeriveStyles(int Style, int ExStyle, out FormBorderStyle border_style, out bool border_static, out TitleStyle title_style, out int caption_height, out int tool_caption_height) {
 927
 928                         caption_height = 0;
 929                         tool_caption_height = 19;
 930                         border_static = false;
 931
 932                         if (StyleSet (Style, WindowStyles.WS_CHILD)) {
 933                                 if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_CLIENTEDGE)) {
 934                                         border_style = FormBorderStyle.Fixed3D;
 935                                 } else if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_STATICEDGE)) {
 936                                         border_style = FormBorderStyle.Fixed3D;
 937                                         border_static = true;
 938                                 } else if (!StyleSet (Style, WindowStyles.WS_BORDER)) {
 939                                         border_style = FormBorderStyle.None;
 940                                 } else {
 941                                         border_style = FormBorderStyle.FixedSingle;
 942                                 }
 943                                 title_style = TitleStyle.None;
 944
 945                                 if (StyleSet (Style, WindowStyles.WS_CAPTION)) {
 946                                         caption_height = 19;
 947                                         if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_TOOLWINDOW)) {
 948                                                 title_style = TitleStyle.Tool;
 949                                         } else {
 950                                                 title_style = TitleStyle.Normal;
 951                                         }
 952                                 }
 953
 954                                 if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_MDICHILD)) {
 955                                         caption_height = 19;
 956
 957                                         if (StyleSet (Style, WindowStyles.WS_OVERLAPPEDWINDOW) ||
 958                                             ExStyleSet (ExStyle, WindowExStyles.WS_EX_TOOLWINDOW)) {
 959                                                 border_style = (FormBorderStyle) 0xFFFF;
 960                                         } else {
 961                                                 border_style = FormBorderStyle.None;
 962                                         }
 963                                 }
 964
 965                         } else {
 966                                 title_style = TitleStyle.None;
 967                                 if (StyleSet (Style, WindowStyles.WS_CAPTION)) {
 968                                         if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_TOOLWINDOW)) {
 969                                                 title_style = TitleStyle.Tool;
 970                                         } else {
 971                                                 title_style = TitleStyle.Normal;
 972                                         }
 973                                 }
 974
 975                                 border_style = FormBorderStyle.None;
 976
 977                                 if (StyleSet (Style, WindowStyles.WS_THICKFRAME)) {
 978                                         if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_TOOLWINDOW)) {
 979                                                 border_style = FormBorderStyle.SizableToolWindow;
 980                                         } else {
 981                                                 border_style = FormBorderStyle.Sizable;
 982                                         }
 983                                 } else {
 984                                         if (StyleSet (Style, WindowStyles.WS_CAPTION)) {
 985                                                 if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_CLIENTEDGE)) {
 986                                                         border_style = FormBorderStyle.Fixed3D;
 987                                                 } else if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_STATICEDGE)) {
 988                                                         border_style = FormBorderStyle.Fixed3D;
 989                                                         border_static = true;
 990                                                 } else if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_DLGMODALFRAME)) {
 991                                                         border_style = FormBorderStyle.FixedDialog;
 992                                                 } else if (ExStyleSet (ExStyle, WindowExStyles.WS_EX_TOOLWINDOW)) {
 993                                                         border_style = FormBorderStyle.FixedToolWindow;
 994                                                 } else if (StyleSet (Style, WindowStyles.WS_BORDER)) {
 995                                                         border_style = FormBorderStyle.FixedSingle;
 996                                                 }
 997                                         } else {
 998                                                 if (StyleSet (Style, WindowStyles.WS_BORDER)) {
 999                                                         border_style = FormBorderStyle.FixedSingle;
1000                                                 }
1001                                         }
1002                                 }
1003                         }
1004                 }
1005
1006                 void SetHwndStyles(Hwnd hwnd, CreateParams cp) {
1007                         DeriveStyles(cp.Style, cp.ExStyle, out hwnd.border_style, out hwnd.border_static, out hwnd.title_style, out hwnd.caption_height, out hwnd.tool_caption_height);
1008                 }
1009
1010                 void SetWMStyles(Hwnd hwnd, CreateParams cp) {
1011                         MotifWmHints            mwmHints;
1012                         MotifFunctions          functions;
1013                         MotifDecorations        decorations;
1014                         int[]                   atoms;
1015                         int                     atom_count;
1016                         Rectangle               client_rect;
1017                         Form                    form;
1018                         IntPtr                  window_type;
1019                         bool                    hide_from_taskbar;
1020                         IntPtr                  transient_for_parent;
1021
1022                         // Windows we manage ourselves don't need WM window styles.
1023                         if (cp.HasWindowManager && !cp.IsSet (WindowExStyles.WS_EX_TOOLWINDOW)) {
1024                                 return;
1025                         }
1026
1027                         atoms = new int[8];
1028                         mwmHints = new MotifWmHints();
1029                         functions = 0;
1030                         decorations = 0;
1031                         window_type = _NET_WM_WINDOW_TYPE_NORMAL;
1032                         transient_for_parent = IntPtr.Zero;
1033
1034                         mwmHints.flags = (IntPtr)(MotifFlags.Functions | MotifFlags.Decorations);
1035                         mwmHints.functions = (IntPtr)0;
1036                         mwmHints.decorations = (IntPtr)0;
1037
1038                         form = cp.control as Form;
1039
1040                         if (ExStyleSet (cp.ExStyle, WindowExStyles.WS_EX_TOOLWINDOW)) {
1041                                 /* tool windows get no window manager
1042                                    decorations.
1043                                 */
1044
1045                                 /* just because the window doesn't get any decorations doesn't
1046                                    mean we should disable the functions.  for instance, without
1047                                    MotifFunctions.Maximize, changing the windowstate to Maximized
1048                                    is ignored by metacity. */
1049                                 functions |= MotifFunctions.Move | MotifFunctions.Resize | MotifFunctions.Minimize | MotifFunctions.Maximize;
1050                         } else if (form != null && form.FormBorderStyle == FormBorderStyle.None) {
1051                                 /* allow borderless window to be maximized */
1052                                 functions |= MotifFunctions.All | MotifFunctions.Resize;
1053                         } else {
1054                                 if (StyleSet (cp.Style, WindowStyles.WS_CAPTION)) {
1055                                         functions |= MotifFunctions.Move;
1056                                         decorations |= MotifDecorations.Title | MotifDecorations.Menu;
1057                                 }
1058
1059                                 if (StyleSet (cp.Style, WindowStyles.WS_THICKFRAME)) {
1060                                         functions |= MotifFunctions.Move | MotifFunctions.Resize;
1061                                         decorations |= MotifDecorations.Border | MotifDecorations.ResizeH;
1062                                 }
1063
1064                                 if (StyleSet (cp.Style, WindowStyles.WS_MINIMIZEBOX)) {
1065                                         functions |= MotifFunctions.Minimize;
1066                                         decorations |= MotifDecorations.Minimize;
1067                                 }
1068
1069                                 if (StyleSet (cp.Style, WindowStyles.WS_MAXIMIZEBOX)) {
1070                                         functions |= MotifFunctions.Maximize;
1071                                         decorations |= MotifDecorations.Maximize;
1072                                 }
1073
1074                                 if (StyleSet (cp.Style, WindowStyles.WS_SIZEBOX)) {
1075                                         functions |= MotifFunctions.Resize;
1076                                         decorations |= MotifDecorations.ResizeH;
1077                                 }
1078
1079                                 if (ExStyleSet (cp.ExStyle, WindowExStyles.WS_EX_DLGMODALFRAME)) {
1080                                         decorations |= MotifDecorations.Border;
1081                                 }
1082
1083                                 if (StyleSet (cp.Style, WindowStyles.WS_BORDER)) {
1084                                         decorations |= MotifDecorations.Border;
1085                                 }
1086
1087                                 if (StyleSet (cp.Style, WindowStyles.WS_DLGFRAME)) {
1088                                         decorations |= MotifDecorations.Border;
1089                                 }
1090
1091                                 if (StyleSet (cp.Style, WindowStyles.WS_SYSMENU)) {
1092                                         functions |= MotifFunctions.Close;
1093                                 }
1094                                 else {
1095                                         functions &= ~(MotifFunctions.Maximize | MotifFunctions.Minimize | MotifFunctions.Close);
1096                                         decorations &= ~(MotifDecorations.Menu | MotifDecorations.Maximize | MotifDecorations.Minimize);
1097                                         if (cp.Caption == "") {
1098                                                 functions &= ~MotifFunctions.Move;
1099                                                 decorations &= ~(MotifDecorations.Title | MotifDecorations.ResizeH);
1100                                         }
1101                                 }
1102                         }
1103
1104                         if ((functions & MotifFunctions.Resize) == 0) {
1105                                 hwnd.fixed_size = true;
1106                                 Rectangle fixed_rectangle = new Rectangle (cp.X, cp.Y, cp.Width, cp.Height);
1107                                 SetWindowMinMax(hwnd.Handle, fixed_rectangle, fixed_rectangle.Size, fixed_rectangle.Size, cp);
1108                         } else {
1109                                 hwnd.fixed_size = false;
1110                         }
1111
1112                         mwmHints.functions = (IntPtr)functions;
1113                         mwmHints.decorations = (IntPtr)decorations;
1114
1115                         DriverDebug ("SetWMStyles ({0}, {1}) functions = {2}, decorations = {3}", hwnd, cp, functions, decorations);
1116
1117                         if (cp.IsSet (WindowExStyles.WS_EX_TOOLWINDOW)) {
1118                                 // needed! map toolwindows to _NET_WM_WINDOW_TYPE_UTILITY to make newer metacity versions happy
1119                                 // and get those windows in front of their parents
1120                                 window_type = _NET_WM_WINDOW_TYPE_UTILITY;
1121                         } else {
1122                                 window_type = _NET_WM_WINDOW_TYPE_NORMAL;
1123                         }
1124
1125                         if (!cp.IsSet (WindowExStyles.WS_EX_APPWINDOW)) {
1126                                 hide_from_taskbar = true;
1127                         } else if (cp.IsSet (WindowExStyles.WS_EX_TOOLWINDOW) &&  form != null && form.Parent != null && !form.ShowInTaskbar) {
1128                                 hide_from_taskbar = true;
1129                         } else {
1130                                 hide_from_taskbar = false;
1131                         }
1132
1133                         if (ExStyleSet (cp.ExStyle, WindowExStyles.WS_EX_TOOLWINDOW)) {
1134                                 if (form != null && !hwnd.reparented) {
1135                                         if (form.Owner != null && form.Owner.Handle != IntPtr.Zero) {
1136                                                 Hwnd owner_hwnd = Hwnd.ObjectFromHandle (form.Owner.Handle);
1137                                                 if (owner_hwnd != null)
1138                                                         transient_for_parent = owner_hwnd.whole_window;
1139                                         }
1140                                 }
1141                         }
1142                         if (StyleSet (cp.Style, WindowStyles.WS_POPUP) && (hwnd.parent != null) && (hwnd.parent.whole_window != IntPtr.Zero)) {
1143                                 transient_for_parent = hwnd.parent.whole_window;
1144                         }
1145
1146                         FormWindowState current_state = GetWindowState (hwnd.Handle);
1147                         if (current_state == (FormWindowState)(-1))
1148                                 current_state = FormWindowState.Normal;
1149
1150                         client_rect = TranslateClientRectangleToXClientRectangle (hwnd);
1151
1152                         lock (XlibLock) {
1153                                 atom_count = 0;
1154
1155                                 atoms [0] = window_type.ToInt32 ();
1156                                 XChangeProperty (DisplayHandle, hwnd.whole_window, _NET_WM_WINDOW_TYPE, (IntPtr)Atom.XA_ATOM, 32, PropertyMode.Replace, atoms, 1);
1157
1158                                 XChangeProperty(DisplayHandle, hwnd.whole_window, _MOTIF_WM_HINTS, _MOTIF_WM_HINTS, 32, PropertyMode.Replace, ref mwmHints, 5);
1159
1160                                 if (transient_for_parent != IntPtr.Zero) {
1161                                         XSetTransientForHint (DisplayHandle, hwnd.whole_window, transient_for_parent);
1162                                 }
1163
1164                                 MoveResizeWindow(DisplayHandle, hwnd.client_window, client_rect.X, client_rect.Y, client_rect.Width, client_rect.Height);
1165
1166                                 if (hide_from_taskbar) {
1167                                         /* this line keeps the window from showing up in gnome's taskbar */
1168                                         atoms[atom_count++] = _NET_WM_STATE_SKIP_TASKBAR.ToInt32();
1169                                 }
1170                                 /* we need to add these atoms in the
1171                                  * event we're maximized, since we're
1172                                  * replacing the existing
1173                                  * _NET_WM_STATE here.  If we don't
1174                                  * add them, future calls to
1175                                  * GetWindowState will return Normal
1176                                  * for a window which is maximized. */
1177                                 if (current_state == FormWindowState.Maximized) {
1178                                         atoms[atom_count++] = _NET_WM_STATE_MAXIMIZED_HORZ.ToInt32();
1179                                         atoms[atom_count++] = _NET_WM_STATE_MAXIMIZED_VERT.ToInt32();
1180                                 }
1181
1182                                 if (form != null && form.Modal) {
1183                                         atoms[atom_count++] = _NET_WM_STATE_MODAL.ToInt32 ();
1184                                 }
1185
1186                                 XChangeProperty(DisplayHandle, hwnd.whole_window, _NET_WM_STATE, (IntPtr)Atom.XA_ATOM, 32, PropertyMode.Replace, atoms, atom_count);
1187
1188                                 atom_count = 0;
1189                                 IntPtr[] atom_ptrs = new IntPtr[2];
1190                                 atom_ptrs[atom_count++] = WM_DELETE_WINDOW;
1191                                 if (ExStyleSet (cp.ExStyle, WindowExStyles.WS_EX_CONTEXTHELP)) {
1192                                         atom_ptrs[atom_count++] = _NET_WM_CONTEXT_HELP;
1193                                 }
1194
1195                                 XSetWMProtocols(DisplayHandle, hwnd.whole_window, atom_ptrs, atom_count);
1196                         }
1197                 }
1198
1199                 void SetIcon(Hwnd hwnd, Icon icon)
1200                 {
1201                         if (icon == null) {
1202                                 // XXX
1203
1204                                 // This really needs to do whatever it
1205                                 // takes to remove the window manager
1206                                 // menu, not just delete the ICON
1207                                 // property.  This will cause metacity
1208                                 // to use the "no icon set" icon, and
1209                                 // we'll still have an icon.
1210                                 XDeleteProperty (DisplayHandle, hwnd.whole_window, _NET_WM_ICON);
1211                         }
1212                         else {
1213                                 Bitmap          bitmap;
1214                                 int             size;
1215                                 IntPtr[]        data;
1216                                 int             index;
1217
1218                                 bitmap = icon.ToBitmap();
1219                                 index = 0;
1220                                 size = bitmap.Width * bitmap.Height + 2;
1221                                 data = new IntPtr[size];
1222
1223                                 data[index++] = (IntPtr)bitmap.Width;
1224                                 data[index++] = (IntPtr)bitmap.Height;
1225
1226                                 for (int y = 0; y < bitmap.Height; y++) {
1227                                         for (int x = 0; x < bitmap.Width; x++) {
1228                                                 data[index++] = (IntPtr)bitmap.GetPixel (x, y).ToArgb ();
1229                                         }
1230                                 }
1231
1232                                 XChangeProperty (DisplayHandle, hwnd.whole_window,
1233                                                  _NET_WM_ICON, (IntPtr)Atom.XA_CARDINAL, 32,
1234                                                  PropertyMode.Replace, data, size);
1235                         }
1236                 }
1237
1238                 void WakeupMain () {
1239                         try {
1240                                 wake.Send (new byte [] { 0xFF });
1241                         } catch (SocketException ex) {
1242                                 if (ex.SocketErrorCode != SocketError.WouldBlock) {
1243                                         throw;
1244                                 }
1245                         }
1246                 }
1247
1248                 XEventQueue ThreadQueue(Thread thread) {
1249                         XEventQueue     queue;
1250
1251                         queue = (XEventQueue)MessageQueues[thread];
1252                         if (queue == null) {
1253                                 queue = new XEventQueue(thread);
1254                                 MessageQueues[thread] = queue;
1255                         }
1256
1257                         return queue;
1258                 }
1259
1260                 void TranslatePropertyToClipboard(IntPtr property) {
1261                         IntPtr                  actual_atom;
1262                         int                     actual_format;
1263                         IntPtr                  nitems;
1264                         IntPtr                  bytes_after;
1265                         IntPtr                  prop = IntPtr.Zero;
1266
1267                         Clipboard.Item = null;
1268
1269                         XGetWindowProperty(DisplayHandle, FosterParent, property, IntPtr.Zero, new IntPtr (0x7fffffff), true, (IntPtr)Atom.AnyPropertyType, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
1270
1271                         if ((long)nitems > 0) {
1272                                 if (property == (IntPtr)Atom.XA_STRING) {
1273                                         // Xamarin-5116: PtrToStringAnsi expects to get UTF-8, but we might have
1274                                         // Latin-1 instead.
1275                                         var s = Marshal.PtrToStringAnsi (prop);
1276                                         if (string.IsNullOrEmpty (s)) {
1277                                                 var sb = new StringBuilder ();
1278                                                 for (int i = 0; i < (int)nitems; i++) {
1279                                                         var b = Marshal.ReadByte (prop, i);
1280                                                         sb.Append ((char)b);
1281                                                 }
1282                                                 s = sb.ToString ();
1283                                         }
1284                                         // Some X managers/apps pass unicode chars as escaped strings, so
1285                                         // we may need to unescape them.
1286                                         Clipboard.Item = UnescapeUnicodeFromAnsi (s);
1287                                 } else if (property == (IntPtr)Atom.XA_BITMAP) {
1288                                         // FIXME - convert bitmap to image
1289                                 } else if (property == (IntPtr)Atom.XA_PIXMAP) {
1290                                         // FIXME - convert pixmap to image
1291                                 } else if (property == OEMTEXT) {
1292                                         Clipboard.Item = UnescapeUnicodeFromAnsi (Marshal.PtrToStringAnsi(prop));
1293                                 } else if (property == UTF8_STRING) {
1294                                         byte [] buffer = new byte [(int)nitems];
1295                                         for (int i = 0; i < (int)nitems; i++)
1296                                                 buffer [i] = Marshal.ReadByte (prop, i);
1297                                         Clipboard.Item = Encoding.UTF8.GetString (buffer);
1298                                 } else if (property == UTF16_STRING) {
1299                                         Clipboard.Item = Marshal.PtrToStringUni (prop, Encoding.Unicode.GetMaxCharCount ((int)nitems));
1300                                 } else if (property == RICHTEXTFORMAT)
1301                                         Clipboard.Item = Marshal.PtrToStringAnsi(prop);
1302                                 else if (DataFormats.ContainsFormat (property.ToInt32 ())) {
1303                                         if (DataFormats.GetFormat (property.ToInt32 ()).is_serializable) {
1304                                                 MemoryStream memory_stream = new MemoryStream ((int)nitems);
1305                                                 for (int i = 0; i < (int)nitems; i++)
1306                                                         memory_stream.WriteByte (Marshal.ReadByte (prop, i));
1307
1308                                                 memory_stream.Position = 0;
1309                                                 BinaryFormatter formatter = new BinaryFormatter ();
1310                                                 Clipboard.Item = formatter.Deserialize (memory_stream);
1311                                                 memory_stream.Close ();
1312                                         }
1313                                 }
1314
1315                                 XFree(prop);
1316                         }
1317                 }
1318
1319                 string UnescapeUnicodeFromAnsi (string value)
1320                 {
1321                         if (value == null || value.IndexOf ("\\u") == -1)
1322                                 return value;
1323
1324                         StringBuilder sb = new StringBuilder (value.Length);
1325                         int start, pos;
1326
1327                         start = pos = 0;
1328                         while (start < value.Length) {
1329                                 pos = value.IndexOf ("\\u", start);
1330                                 if (pos == -1)
1331                                         break;
1332
1333                                 sb.Append (value, start, pos - start);
1334                                 pos += 2;
1335                                 start = pos;
1336
1337                                 int length = 0;
1338                                 while (pos < value.Length) {
1339                                         if (!ValidHexDigit (value [pos]))
1340                                                 break;
1341                                         length++;
1342                                         pos++;
1343                                 }
1344
1345                                 int res;
1346                                 if (!Int32.TryParse (value.Substring (start, length), System.Globalization.NumberStyles.HexNumber,
1347                                                         null, out res))
1348                                         return value; // Error, return the unescaped original value.
1349
1350                                 sb.Append ((char)res);
1351                                 start = pos;
1352                         }
1353
1354                         // Append any remaining data.
1355                         if (start < value.Length)
1356                                 sb.Append (value, start, value.Length - start);
1357
1358                         return sb.ToString ();
1359                 }
1360
1361                 private static bool ValidHexDigit (char e)
1362                 {
1363                         return Char.IsDigit (e) || (e >= 'A' && e <= 'F') || (e >= 'a' && e <= 'f');
1364                 }
1365
1366                 void AddExpose (Hwnd hwnd, bool client, int x, int y, int width, int height) {
1367                         // Don't waste time
1368                         if ((hwnd == null) || (x > hwnd.Width) || (y > hwnd.Height) || ((x + width) < 0) || ((y + height) < 0)) {
1369                                 return;
1370                         }
1371
1372                         // Keep the invalid area as small as needed
1373                         if ((x + width) > hwnd.width) {
1374                                 width = hwnd.width - x;
1375                         }
1376
1377                         if ((y + height) > hwnd.height) {
1378                                 height = hwnd.height - y;
1379                         }
1380
1381                         if (client) {
1382                                 hwnd.AddInvalidArea(x, y, width, height);
1383                                 if (!hwnd.expose_pending) {
1384                                         if (!hwnd.nc_expose_pending) {
1385                                                 hwnd.Queue.Paint.Enqueue(hwnd);
1386                                         }
1387                                         hwnd.expose_pending = true;
1388                                 }
1389                         } else {
1390                                 hwnd.AddNcInvalidArea (x, y, width, height);
1391
1392                                 if (!hwnd.nc_expose_pending) {
1393                                         if (!hwnd.expose_pending) {
1394                                                 hwnd.Queue.Paint.Enqueue(hwnd);
1395                                         }
1396                                         hwnd.nc_expose_pending = true;
1397                                 }
1398                         }
1399                 }
1400
1401                 static Hwnd.Borders FrameExtents (IntPtr window)
1402                 {
1403                         IntPtr actual_atom;
1404                         int actual_format;
1405                         IntPtr nitems;
1406                         IntPtr bytes_after;
1407                         IntPtr prop = IntPtr.Zero;
1408                         Hwnd.Borders rect = new Hwnd.Borders ();
1409
1410                         XGetWindowProperty (DisplayHandle, window, _NET_FRAME_EXTENTS, IntPtr.Zero, new IntPtr (16), false, (IntPtr)Atom.XA_CARDINAL, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
1411                         if (prop != IntPtr.Zero) {
1412                                 if (nitems.ToInt32 () == 4) {
1413                                         rect.left = Marshal.ReadInt32 (prop, 0);
1414                                         rect.right = Marshal.ReadInt32 (prop, IntPtr.Size);
1415                                         rect.top = Marshal.ReadInt32 (prop, 2 * IntPtr.Size);
1416                                         rect.bottom = Marshal.ReadInt32 (prop, 3 * IntPtr.Size);
1417                                 }
1418                                 XFree (prop);
1419                         }
1420
1421                         return rect;
1422                 }
1423
1424                 void AddConfigureNotify (XEvent xevent) {
1425                         Hwnd    hwnd;
1426
1427                         hwnd = Hwnd.GetObjectFromWindow(xevent.ConfigureEvent.window);
1428
1429                         // Don't waste time
1430                         if (hwnd == null || hwnd.zombie) {
1431                                 return;
1432                         }
1433                         if ((xevent.ConfigureEvent.window == hwnd.whole_window)/* && (xevent.ConfigureEvent.window == xevent.ConfigureEvent.xevent)*/) {
1434                                 if (hwnd.parent == null) {
1435                                         // The location given by the event is not reliable between different wm's,
1436                                         // so use an alternative way of getting it.
1437                                         Point location = GetTopLevelWindowLocation (hwnd);
1438                                         hwnd.x = location.X;
1439                                         hwnd.y = location.Y;
1440                                 }
1441
1442                                 // XXX this sucks.  this isn't thread safe
1443                                 Control ctrl = Control.FromHandle (hwnd.Handle);
1444                                 Size TranslatedSize;
1445                                 if (ctrl != null) {
1446                                         TranslatedSize = TranslateXWindowSizeToWindowSize (ctrl.GetCreateParams (), xevent.ConfigureEvent.width, xevent.ConfigureEvent.height);
1447                                 } else {
1448                                         TranslatedSize = new Size (xevent.ConfigureEvent.width, xevent.ConfigureEvent.height);
1449                                 }
1450                                 hwnd.width = TranslatedSize.Width;
1451                                 hwnd.height = TranslatedSize.Height;
1452                                 hwnd.ClientRect = Rectangle.Empty;
1453
1454                                 DriverDebug ("AddConfigureNotify (hwnd.Handle = {1}, final hwnd.rect = {0}, reported rect={2})",
1455                                              new Rectangle (hwnd.x, hwnd.y, hwnd.width, hwnd.height), hwnd.Handle,
1456                                              new Rectangle (xevent.ConfigureEvent.x, xevent.ConfigureEvent.y, xevent.ConfigureEvent.width, xevent.ConfigureEvent.width));
1457                                 lock (hwnd.configure_lock) {
1458                                         if (!hwnd.configure_pending) {
1459                                                 hwnd.Queue.EnqueueLocked (xevent);
1460                                                 hwnd.configure_pending = true;
1461                                         }
1462                                 }
1463                         }
1464                         // We drop configure events for Client windows
1465                 }
1466
1467                 void ShowCaret() {
1468                         if ((Caret.gc == IntPtr.Zero) || Caret.On) {
1469                                 return;
1470                         }
1471                         Caret.On = true;
1472
1473                         lock (XlibLock) {
1474                                 XDrawLine(DisplayHandle, Caret.Window, Caret.gc, Caret.X, Caret.Y, Caret.X, Caret.Y + Caret.Height);
1475                         }
1476                 }
1477
1478                 void HideCaret() {
1479                         if ((Caret.gc == IntPtr.Zero) || !Caret.On) {
1480                                 return;
1481                         }
1482                         Caret.On = false;
1483
1484                         lock (XlibLock) {
1485                                 XDrawLine(DisplayHandle, Caret.Window, Caret.gc, Caret.X, Caret.Y, Caret.X, Caret.Y + Caret.Height);
1486                         }
1487                 }
1488
1489                 int NextTimeout (ArrayList timers, DateTime now) {
1490                         int timeout = 0;
1491
1492                         foreach (Timer timer in timers) {
1493                                 int next = (int) (timer.Expires - now).TotalMilliseconds;
1494                                 if (next < 0) {
1495                                         return 0; // Have a timer that has already expired
1496                                 }
1497
1498                                 if (next < timeout) {
1499                                         timeout = next;
1500                                 }
1501                         }
1502                         if (timeout < Timer.Minimum) {
1503                                 timeout = Timer.Minimum;
1504                         }
1505
1506                         if (timeout > 1000)
1507                                 timeout = 1000;
1508                         return timeout;
1509                 }
1510
1511                 void CheckTimers (ArrayList timers, DateTime now) {
1512                         int count;
1513
1514                         count = timers.Count;
1515
1516                         if (count == 0)
1517                                 return;
1518
1519                         for (int i = 0; i < timers.Count; i++) {
1520                                 Timer timer;
1521
1522                                 timer = (Timer) timers [i];
1523
1524                                 if (timer.Enabled && timer.Expires <= now && !timer.Busy) {
1525                                         // Timer ticks:
1526                                         //  - Before MainForm.OnLoad if DoEvents () is called.
1527                                         //  - After MainForm.OnLoad if not.
1528                                         //
1529                                         if (in_doevents ||
1530                                             (Application.MWFThread.Current.Context != null &&
1531                                              (Application.MWFThread.Current.Context.MainForm == null ||
1532                                               Application.MWFThread.Current.Context.MainForm.IsLoaded))) {
1533                                                 timer.Busy = true;
1534                                                 timer.Update (now);
1535                                                 timer.FireTick ();
1536                                                 timer.Busy = false;
1537                                         }
1538                                 }
1539                         }
1540                 }
1541
1542                 void WaitForHwndMessage (Hwnd hwnd, Msg message) {
1543                         WaitForHwndMessage (hwnd, message, false);
1544
1545                 }
1546
1547                 void WaitForHwndMessage (Hwnd hwnd, Msg message, bool process) {
1548                         MSG msg = new MSG ();
1549                         XEventQueue queue;
1550
1551                         queue = ThreadQueue(Thread.CurrentThread);
1552
1553                         queue.DispatchIdle = false;
1554
1555                         bool done = false;
1556                         string key = hwnd.Handle + ":" + message;
1557                         if (!messageHold.ContainsKey (key))
1558                                 messageHold.Add (key, 1);
1559                         else
1560                                 messageHold[key] = ((int)messageHold[key]) + 1;
1561
1562
1563                         do {
1564
1565                                 DebugHelper.WriteLine  ("Waiting for message " + message + " on hwnd " + String.Format("0x{0:x}", hwnd.Handle.ToInt32 ()));
1566                                 DebugHelper.Indent ();
1567
1568                                 if (PeekMessage(queue, ref msg, IntPtr.Zero, 0, 0, (uint)PeekMessageFlags.PM_REMOVE)) {
1569                                         if ((Msg)msg.message == Msg.WM_QUIT) {
1570                                                 PostQuitMessage (0);
1571                                                 done = true;
1572                                         }
1573                                         else {
1574
1575                                                 DebugHelper.WriteLine  ("PeekMessage got " + msg);
1576
1577                                                 if (msg.hwnd == hwnd.Handle) {
1578                                                         if ((Msg)msg.message == message) {
1579                                                                 if (process) {
1580                                                                         TranslateMessage (ref msg);
1581                                                                         DispatchMessage (ref msg);
1582                                                                 }
1583                                                                 break;
1584                                                         }
1585                                                         else if ((Msg)msg.message == Msg.WM_DESTROY)
1586                                                                 done = true;
1587                                                 }
1588
1589                                                 TranslateMessage (ref msg);
1590                                                 DispatchMessage (ref msg);
1591                                         }
1592                                 }
1593
1594                                 done = !messageHold.ContainsKey (key) || ((int)messageHold[key] < 1) || done;
1595                         } while (!done);
1596
1597                         messageHold.Remove (key);
1598
1599                         DebugHelper.Unindent ();
1600                         DebugHelper.WriteLine  ("Finished waiting for " + key);
1601
1602                         queue.DispatchIdle = true;
1603
1604                 }
1605
1606                 void MapWindow(Hwnd hwnd, WindowType windows) {
1607                         if (!hwnd.mapped) {
1608                                 Form f = Control.FromHandle(hwnd.Handle) as Form;
1609                                 if (f != null) {
1610                                         if (f.WindowState == FormWindowState.Normal) {
1611                                                 f.waiting_showwindow = true;
1612                                                 SendMessage(hwnd.Handle, Msg.WM_SHOWWINDOW, (IntPtr)1, IntPtr.Zero);
1613                                         }
1614                                 }
1615
1616                                 // it's possible that our Hwnd is no
1617                                 // longer valid after making that
1618                                 // SendMessage call, so check here.
1619                                 if (hwnd.zombie)
1620                                         return;
1621
1622                                 if (hwnd.topmost) {
1623                                         // Most window managers will respect the _NET_WM_STATE property.
1624                                         // If not, use XMapRaised to map the window at the top level as
1625                                         // a last ditch effort.
1626                                         if ((windows & WindowType.Whole) != 0) {
1627                                                 XMapRaised(DisplayHandle, hwnd.whole_window);
1628                                         }
1629                                         if ((windows & WindowType.Client) != 0) {
1630                                                 XMapRaised(DisplayHandle, hwnd.client_window);
1631                                         }
1632                                 } else {
1633                                         if ((windows & WindowType.Whole) != 0) {
1634                                                 XMapWindow(DisplayHandle, hwnd.whole_window);
1635                                         }
1636                                         if ((windows & WindowType.Client) != 0) {
1637                                                 XMapWindow(DisplayHandle, hwnd.client_window);
1638                                         }
1639                                 }
1640
1641                                 hwnd.mapped = true;
1642
1643                                 if (f != null) {
1644                                         if (f.waiting_showwindow) {
1645                                                 WaitForHwndMessage (hwnd, Msg.WM_SHOWWINDOW);
1646                                                 CreateParams cp = f.GetCreateParams();
1647                                                 if (!ExStyleSet (cp.ExStyle, WindowExStyles.WS_EX_MDICHILD) &&
1648                                                     !StyleSet (cp.Style, WindowStyles.WS_CHILD)) {
1649                                                         WaitForHwndMessage (hwnd, Msg.WM_ACTIVATE, true);
1650                                                 }
1651                                         }
1652                                 }
1653                         }
1654                 }
1655
1656                 void UnmapWindow(Hwnd hwnd, WindowType windows) {
1657                         if (hwnd.mapped) {
1658                                 Form f = null;
1659                                 if (Control.FromHandle(hwnd.Handle) is Form) {
1660                                         f = Control.FromHandle(hwnd.Handle) as Form;
1661                                         if (f.WindowState == FormWindowState.Normal) {
1662                                                 f.waiting_showwindow = true;
1663                                                 SendMessage(hwnd.Handle, Msg.WM_SHOWWINDOW, IntPtr.Zero, IntPtr.Zero);
1664                                         }
1665                                 }
1666
1667                                 // it's possible that our Hwnd is no
1668                                 // longer valid after making that
1669                                 // SendMessage call, so check here.
1670                                 // FIXME: it is likely wrong, as it has already sent WM_SHOWWINDOW
1671                                 if (hwnd.zombie)
1672                                         return;
1673
1674                                 if ((windows & WindowType.Client) != 0) {
1675                                         XUnmapWindow(DisplayHandle, hwnd.client_window);
1676                                 }
1677                                 if ((windows & WindowType.Whole) != 0) {
1678                                         XUnmapWindow(DisplayHandle, hwnd.whole_window);
1679                                 }
1680
1681                                 hwnd.mapped = false;
1682
1683                                 if (f != null) {
1684                                         if (f.waiting_showwindow) {
1685                                                 WaitForHwndMessage (hwnd, Msg.WM_SHOWWINDOW);
1686                                                 CreateParams cp = f.GetCreateParams();
1687                                                 if (!ExStyleSet (cp.ExStyle, WindowExStyles.WS_EX_MDICHILD) &&
1688                                                     !StyleSet (cp.Style, WindowStyles.WS_CHILD)) {
1689                                                         WaitForHwndMessage (hwnd, Msg.WM_ACTIVATE, true);
1690                                                 }
1691                                         }
1692                                 }
1693                         }
1694                 }
1695
1696                 void UpdateMessageQueue (XEventQueue queue) {
1697                         UpdateMessageQueue(queue, true);
1698                 }
1699
1700                 void UpdateMessageQueue (XEventQueue queue, bool allowIdle) {
1701                         DateTime        now;
1702                         int             pending;
1703                         Hwnd            hwnd;
1704
1705                         now = DateTime.UtcNow;
1706
1707                         lock (XlibLock) {
1708                                 pending = XPending (DisplayHandle);
1709                         }
1710
1711                         if (pending == 0 && allowIdle) {
1712                                 if ((queue == null || queue.DispatchIdle) && Idle != null) {
1713                                         Idle (this, EventArgs.Empty);
1714                                 }
1715
1716                                 lock (XlibLock) {
1717                                         pending = XPending (DisplayHandle);
1718                                 }
1719                         }
1720
1721                         if (pending == 0) {
1722                                 int     timeout = 0;
1723
1724                                 if (queue != null) {
1725                                         if (queue.Paint.Count > 0)
1726                                                 return;
1727
1728                                         timeout = NextTimeout (queue.timer_list, now);
1729                                 }
1730
1731                                 if (timeout > 0) {
1732                                         #if __MonoCS__
1733                                         int length = pollfds.Length - 1;
1734                                         lock (wake_waiting_lock) {
1735                                                 if (wake_waiting == false) {
1736                                                         length ++;
1737                                                         wake_waiting = true;
1738                                                 }
1739                                         }
1740
1741                                         Syscall.poll (pollfds, (uint)length, timeout);
1742                                         // Clean out buffer, so we're not busy-looping on the same data
1743                                         if (length == pollfds.Length) {
1744                                                 if (pollfds[1].revents != 0)
1745                                                         wake_receive.Receive(network_buffer, 0, 1, SocketFlags.None);
1746                                                 lock (wake_waiting_lock) {
1747                                                         wake_waiting = false;
1748                                                 }
1749                                         }
1750                                         #endif
1751                                         lock (XlibLock) {
1752                                                 pending = XPending (DisplayHandle);
1753                                         }
1754                                 }
1755                         }
1756
1757                         if (queue != null)
1758                                 CheckTimers (queue.timer_list, now);
1759
1760                         while (true) {
1761                                 XEvent xevent = new XEvent ();
1762
1763                                 lock (XlibLock) {
1764                                         if (XPending (DisplayHandle) == 0)
1765                                                 break;
1766
1767                                         XNextEvent (DisplayHandle, ref xevent);
1768
1769                                         if (xevent.AnyEvent.type == XEventName.KeyPress ||
1770                                             xevent.AnyEvent.type == XEventName.KeyRelease) {
1771                                                 // PreFilter() handles "shift key state updates.
1772                                                 Keyboard.PreFilter (xevent);
1773                                                 if (XFilterEvent (ref xevent, Keyboard.ClientWindow)) {
1774                                                         // probably here we could raise WM_IME_KEYDOWN and
1775                                                         // WM_IME_KEYUP, but I'm not sure it is worthy.
1776                                                         continue;
1777                                                 }
1778                                         }
1779                                         else if (XFilterEvent (ref xevent, IntPtr.Zero))
1780                                                 continue;
1781                                 }
1782
1783                                 hwnd = Hwnd.GetObjectFromWindow(xevent.AnyEvent.window);
1784                                 if (hwnd == null)
1785                                         continue;
1786
1787                                 DebugHelper.WriteLine  ("UpdateMessageQueue got Event: " + xevent.ToString ());
1788
1789                                 switch (xevent.type) {
1790                                 case XEventName.Expose:
1791                                         AddExpose (hwnd, xevent.ExposeEvent.window == hwnd.ClientWindow, xevent.ExposeEvent.x, xevent.ExposeEvent.y, xevent.ExposeEvent.width, xevent.ExposeEvent.height);
1792                                         break;
1793
1794                                 case XEventName.SelectionClear: {
1795                                         // Should we do something?
1796                                         break;
1797                                 }
1798
1799                                 case XEventName.SelectionRequest: {
1800                                         if (Dnd.HandleSelectionRequestEvent (ref xevent))
1801                                                 break;
1802                                         XEvent sel_event;
1803
1804                                         sel_event = new XEvent();
1805                                         sel_event.SelectionEvent.type = XEventName.SelectionNotify;
1806                                         sel_event.SelectionEvent.send_event = true;
1807                                         sel_event.SelectionEvent.display = DisplayHandle;
1808                                         sel_event.SelectionEvent.selection = xevent.SelectionRequestEvent.selection;
1809                                         sel_event.SelectionEvent.target = xevent.SelectionRequestEvent.target;
1810                                         sel_event.SelectionEvent.requestor = xevent.SelectionRequestEvent.requestor;
1811                                         sel_event.SelectionEvent.time = xevent.SelectionRequestEvent.time;
1812                                         sel_event.SelectionEvent.property = IntPtr.Zero;
1813
1814                                         IntPtr format_atom = xevent.SelectionRequestEvent.target;
1815
1816                                         // Seems that some apps support asking for supported types
1817                                         if (format_atom == TARGETS) {
1818                                                 int[]   atoms;
1819                                                 int     atom_count;
1820
1821                                                 atoms = new int[5];
1822                                                 atom_count = 0;
1823
1824                                                 if (Clipboard.IsSourceText) {
1825                                                         atoms[atom_count++] = (int)Atom.XA_STRING;
1826                                                         atoms[atom_count++] = (int)OEMTEXT;
1827                                                         atoms[atom_count++] = (int)UTF8_STRING;
1828                                                         atoms[atom_count++] = (int)UTF16_STRING;
1829                                                         atoms[atom_count++] = (int)RICHTEXTFORMAT;
1830                                                 } else if (Clipboard.IsSourceImage) {
1831                                                         atoms[atom_count++] = (int)Atom.XA_PIXMAP;
1832                                                         atoms[atom_count++] = (int)Atom.XA_BITMAP;
1833                                                 } else {
1834                                                         // FIXME - handle other types
1835                                                 }
1836
1837                                                 XChangeProperty(DisplayHandle, xevent.SelectionRequestEvent.requestor, (IntPtr)xevent.SelectionRequestEvent.property,
1838                                                                 (IntPtr)xevent.SelectionRequestEvent.target, 32, PropertyMode.Replace, atoms, atom_count);
1839                                                 sel_event.SelectionEvent.property = xevent.SelectionRequestEvent.property;
1840                                         } else if (format_atom == (IntPtr)RICHTEXTFORMAT) {
1841                                                 string rtf_text = Clipboard.GetRtfText ();
1842                                                 if (rtf_text != null) {
1843                                                         // The RTF spec mentions that ascii is enough to contain it
1844                                                         Byte [] bytes = Encoding.ASCII.GetBytes (rtf_text);
1845                                                         int buflen = bytes.Length;
1846                                                         IntPtr buffer = Marshal.AllocHGlobal (buflen);
1847
1848                                                         for (int i = 0; i < buflen; i++)
1849                                                                 Marshal.WriteByte (buffer, i, bytes[i]);
1850
1851                                                         XChangeProperty(DisplayHandle, xevent.SelectionRequestEvent.requestor, (IntPtr)xevent.SelectionRequestEvent.property,
1852                                                                         (IntPtr)xevent.SelectionRequestEvent.target, 8, PropertyMode.Replace, buffer, buflen);
1853                                                         sel_event.SelectionEvent.property = xevent.SelectionRequestEvent.property;
1854                                                         Marshal.FreeHGlobal(buffer);
1855                                                 }
1856                                         } else if (Clipboard.IsSourceText &&
1857                                                    (format_atom == (IntPtr)Atom.XA_STRING
1858                                                     || format_atom == OEMTEXT
1859                                                     || format_atom == UTF16_STRING
1860                                                     || format_atom == UTF8_STRING)) {
1861                                                 IntPtr  buffer = IntPtr.Zero;
1862                                                 int     buflen;
1863                                                 Encoding encoding = null;
1864
1865                                                 buflen = 0;
1866
1867                                                 // Select an encoding depending on the target
1868                                                 IntPtr target_atom = xevent.SelectionRequestEvent.target;
1869                                                 if (target_atom == (IntPtr)Atom.XA_STRING || target_atom == OEMTEXT)
1870                                                         // FIXME - EOMTEXT should encode into ISO2022
1871                                                         encoding = Encoding.ASCII;
1872                                                 else if (target_atom == UTF16_STRING)
1873                                                         encoding = Encoding.Unicode;
1874                                                 else if (target_atom == UTF8_STRING)
1875                                                         encoding = Encoding.UTF8;
1876
1877                                                 Byte [] bytes;
1878
1879                                                 bytes = encoding.GetBytes (Clipboard.GetPlainText ());
1880                                                 buffer = Marshal.AllocHGlobal (bytes.Length);
1881                                                 buflen = bytes.Length;
1882
1883                                                 for (int i = 0; i < buflen; i++)
1884                                                         Marshal.WriteByte (buffer, i, bytes [i]);
1885
1886                                                 if (buffer != IntPtr.Zero) {
1887                                                         XChangeProperty(DisplayHandle, xevent.SelectionRequestEvent.requestor, (IntPtr)xevent.SelectionRequestEvent.property, (IntPtr)xevent.SelectionRequestEvent.target, 8, PropertyMode.Replace, buffer, buflen);
1888                                                         sel_event.SelectionEvent.property = xevent.SelectionRequestEvent.property;
1889                                                         Marshal.FreeHGlobal(buffer);
1890                                                 }
1891                                         } else if (Clipboard.GetSource (format_atom.ToInt32 ()) != null) { // check if we have an available value of this format
1892                                                 if (DataFormats.GetFormat (format_atom.ToInt32 ()).is_serializable) {
1893                                                         object serializable = Clipboard.GetSource (format_atom.ToInt32 ());
1894
1895                                                         BinaryFormatter formatter = new BinaryFormatter ();
1896                                                         MemoryStream memory_stream = new MemoryStream ();
1897                                                         formatter.Serialize (memory_stream, serializable);
1898
1899                                                         int buflen = (int)memory_stream.Length;
1900                                                         IntPtr buffer = Marshal.AllocHGlobal (buflen);
1901                                                         memory_stream.Position = 0;
1902                                                         for (int i = 0; i < buflen; i++)
1903                                                                 Marshal.WriteByte (buffer, i, (byte)memory_stream.ReadByte ());
1904                                                         memory_stream.Close ();
1905
1906                                                         XChangeProperty (DisplayHandle, xevent.SelectionRequestEvent.requestor, (IntPtr)xevent.SelectionRequestEvent.property, (IntPtr)xevent.SelectionRequestEvent.target,
1907                                                                         8, PropertyMode.Replace, buffer, buflen);
1908                                                         sel_event.SelectionEvent.property = xevent.SelectionRequestEvent.property;
1909                                                         Marshal.FreeHGlobal (buffer);
1910                                                 }
1911
1912                                         } else if (Clipboard.IsSourceImage) {
1913                                                 if (xevent.SelectionEvent.target == (IntPtr)Atom.XA_PIXMAP) {
1914                                                         // FIXME - convert image and store as property
1915                                                 } else if (xevent.SelectionEvent.target == (IntPtr)Atom.XA_PIXMAP) {
1916                                                         // FIXME - convert image and store as property
1917                                                 }
1918                                         }
1919
1920                                         XSendEvent(DisplayHandle, xevent.SelectionRequestEvent.requestor, false, new IntPtr ((int)EventMask.NoEventMask), ref sel_event);
1921                                         break;
1922                                 }
1923
1924                                 case XEventName.SelectionNotify: {
1925                                         if (Clipboard.Enumerating) {
1926                                                 Clipboard.Enumerating = false;
1927                                                 if (xevent.SelectionEvent.property != IntPtr.Zero) {
1928                                                         XDeleteProperty(DisplayHandle, FosterParent, (IntPtr)xevent.SelectionEvent.property);
1929                                                         if (!Clipboard.Formats.Contains(xevent.SelectionEvent.property)) {
1930                                                                 Clipboard.Formats.Add(xevent.SelectionEvent.property);
1931                                                                 DriverDebug("Got supported clipboard atom format: {0}", xevent.SelectionEvent.property);
1932                                                         }
1933                                                 }
1934                                         } else if (Clipboard.Retrieving) {
1935                                                 Clipboard.Retrieving = false;
1936                                                 if (xevent.SelectionEvent.property != IntPtr.Zero) {
1937                                                         TranslatePropertyToClipboard(xevent.SelectionEvent.property);
1938                                                 } else {
1939                                                         Clipboard.ClearSources ();
1940                                                         Clipboard.Item = null;
1941                                                 }
1942                                         } else {
1943                                                 Dnd.HandleSelectionNotifyEvent (ref xevent);
1944                                         }
1945                                         break;
1946                                 }
1947
1948                                 case XEventName.KeyRelease:
1949                                         if (!detectable_key_auto_repeat && XPending (DisplayHandle) != 0) {
1950                                                 XEvent nextevent = new XEvent ();
1951
1952                                                 XPeekEvent (DisplayHandle, ref nextevent);
1953
1954                                                 if (nextevent.type == XEventName.KeyPress &&
1955                                                     nextevent.KeyEvent.keycode == xevent.KeyEvent.keycode &&
1956                                                     nextevent.KeyEvent.time == xevent.KeyEvent.time) {
1957                                                         continue;
1958                                                 }
1959                                         }
1960                                         goto case XEventName.KeyPress;
1961
1962                                 case XEventName.MotionNotify: {
1963                                         XEvent peek;
1964
1965                                         /* we can't do motion compression across threads, so just punt if we don't match up */
1966                                         if (Thread.CurrentThread == hwnd.Queue.Thread && hwnd.Queue.Count > 0) {
1967                                                 peek = hwnd.Queue.Peek();
1968                                                 if (peek.AnyEvent.type == XEventName.MotionNotify) {
1969                                                         continue;
1970                                                 }
1971                                         }
1972                                         goto case XEventName.KeyPress;
1973                                 }
1974
1975                                 case XEventName.KeyPress:
1976                                         hwnd.Queue.EnqueueLocked (xevent);
1977                                         /* Process KeyPresses immediately. Otherwise multiple Compose messages as a result of a
1978                                          * single physical keypress are not processed correctly */
1979                                         return;
1980                                 case XEventName.ButtonPress:
1981                                 case XEventName.ButtonRelease:
1982                                 case XEventName.EnterNotify:
1983                                 case XEventName.LeaveNotify:
1984                                 case XEventName.CreateNotify:
1985                                 case XEventName.DestroyNotify:
1986                                 case XEventName.FocusIn:
1987                                 case XEventName.FocusOut:
1988                                 case XEventName.ClientMessage:
1989                                 case XEventName.ReparentNotify:
1990                                 case XEventName.MapNotify:
1991                                 case XEventName.UnmapNotify:
1992                                         hwnd.Queue.EnqueueLocked (xevent);
1993                                         break;
1994
1995                                 case XEventName.ConfigureNotify:
1996                                         AddConfigureNotify(xevent);
1997                                         break;
1998
1999                                 case XEventName.PropertyNotify:
2000                                         DriverDebug ("UpdateMessageQueue (), got Event: {0}", xevent.ToString ());
2001                                         if (xevent.PropertyEvent.atom == _NET_ACTIVE_WINDOW) {
2002                                                 IntPtr  actual_atom;
2003                                                 int     actual_format;
2004                                                 IntPtr  nitems;
2005                                                 IntPtr  bytes_after;
2006                                                 IntPtr  prop = IntPtr.Zero;
2007                                                 IntPtr  prev_active;
2008
2009                                                 prev_active = ActiveWindow;
2010                                                 XGetWindowProperty(DisplayHandle, RootWindow, _NET_ACTIVE_WINDOW, IntPtr.Zero, new IntPtr (1), false, (IntPtr)Atom.XA_WINDOW, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
2011                                                 if (((long)nitems > 0) && (prop != IntPtr.Zero)) {
2012                                                         ActiveWindow = Hwnd.GetHandleFromWindow((IntPtr)Marshal.ReadInt32(prop));
2013                                                         XFree(prop);
2014
2015                                                         DebugHelper.WriteLine ("PropertyNotify: _NET_ACTIVE_WINDOW: previous = 0x{0:x}, new = 0x{1:x}", prev_active.ToInt32 (), ActiveWindow.ToInt32 ());
2016
2017                                                         if (prev_active != ActiveWindow) {
2018                                                                 if (prev_active != IntPtr.Zero) {
2019                                                                         PostMessage(prev_active, Msg.WM_ACTIVATE, (IntPtr)WindowActiveFlags.WA_INACTIVE, IntPtr.Zero);
2020                                                                 }
2021                                                                 if (ActiveWindow != IntPtr.Zero) {
2022                                                                         PostMessage(ActiveWindow, Msg.WM_ACTIVATE, (IntPtr)WindowActiveFlags.WA_ACTIVE, IntPtr.Zero);
2023                                                                 }
2024                                                         }
2025                                                         if (ModalWindows.Count == 0) {
2026                                                                 break;
2027                                                         } else {
2028                                                                 // Modality Handling
2029                                                                 //
2030                                                                 // If there is a modal window on the stack and the new active
2031                                                                 // window is MWF window, but not the modal one and not a non-modal
2032                                                                 // child of the modal one, switch back to the modal window.
2033                                                                 //
2034                                                                 // To identify if a non-modal form is child of a modal form
2035                                                                 // we match their ApplicationContexts, which will be the same.
2036                                                                 // This is because each modal form runs the loop with a
2037                                                                 // new ApplicationContext, which is inherited by the non-modal
2038                                                                 // forms.
2039
2040                                                                 Form activeForm = Control.FromHandle (ActiveWindow) as Form;
2041                                                                 if (activeForm != null) {
2042                                                                         Form modalForm = Control.FromHandle ((IntPtr)ModalWindows.Peek()) as Form;
2043                                                                         if (ActiveWindow != (IntPtr)ModalWindows.Peek() &&
2044                                                                             (modalForm == null || activeForm.context == modalForm.context)) {
2045                                                                                 Activate((IntPtr)ModalWindows.Peek());
2046                                                                         }
2047                                                                 }
2048                                                                 break;
2049                                                         }
2050                                                 }
2051                                         }
2052                                         else if (xevent.PropertyEvent.atom == _NET_WM_STATE) {
2053                                                 // invalidate our cache - we'll query again the next time someone does GetWindowState.
2054                                                 hwnd.cached_window_state = (FormWindowState)(-1);
2055                                                 PostMessage (hwnd.Handle, Msg.WM_WINDOWPOSCHANGED, IntPtr.Zero, IntPtr.Zero);
2056                                         }
2057                                         break;
2058
2059                                 }
2060                         }
2061                 }
2062
2063                 IntPtr GetMousewParam(int Delta) {
2064                         int     result = 0;
2065
2066                         if ((MouseState & MouseButtons.Left) != 0) {
2067                                 result |= (int)MsgButtons.MK_LBUTTON;
2068                         }
2069
2070                         if ((MouseState & MouseButtons.Middle) != 0) {
2071                                 result |= (int)MsgButtons.MK_MBUTTON;
2072                         }
2073
2074                         if ((MouseState & MouseButtons.Right) != 0) {
2075                                 result |= (int)MsgButtons.MK_RBUTTON;
2076                         }
2077
2078                         Keys mods = ModifierKeys;
2079                         if ((mods & Keys.Control) != 0) {
2080                                 result |= (int)MsgButtons.MK_CONTROL;
2081                         }
2082
2083                         if ((mods & Keys.Shift) != 0) {
2084                                 result |= (int)MsgButtons.MK_SHIFT;
2085                         }
2086
2087                         result |= Delta << 16;
2088
2089                         return (IntPtr)result;
2090                 }
2091                 IntPtr XGetParent(IntPtr handle) {
2092                         IntPtr  Root;
2093                         IntPtr  Parent;
2094                         IntPtr  Children;
2095                         int     ChildCount;
2096
2097                         lock (XlibLock) {
2098                                 XQueryTree(DisplayHandle, handle, out Root, out Parent, out Children, out ChildCount);
2099                         }
2100
2101                         if (Children!=IntPtr.Zero) {
2102                                 lock (XlibLock) {
2103                                         XFree(Children);
2104                                 }
2105                         }
2106                         return Parent;
2107                 }
2108
2109                 int HandleError (IntPtr display, ref XErrorEvent error_event)
2110                 {
2111                         // we need to workaround a problem with the
2112                         // ordering of destruction of Drawables and
2113                         // Pictures that exists between cairo and
2114                         // RENDER on the server.
2115                         if (error_event.request_code == (XRequest)render_major_opcode
2116                             && error_event.minor_code == 7 /* X_RenderFreePicture from render.h */
2117                             && error_event.error_code == render_first_error + 1 /* BadPicture from render.h */) {
2118                                 return 0;
2119                         }
2120
2121                         if (ErrorExceptions) {
2122                                 XUngrabPointer (display, IntPtr.Zero);
2123                                 throw new XException (error_event.display, error_event.resourceid,
2124                                                       error_event.serial, error_event.error_code,
2125                                                       error_event.request_code, error_event.minor_code);
2126                         } else {
2127                                 Console.WriteLine("X11 Error encountered: {0}{1}\n",
2128                                                   XException.GetMessage (error_event.display, error_event.resourceid,
2129                                                                          error_event.serial, error_event.error_code,
2130                                                                          error_event.request_code, error_event.minor_code),
2131                                                   Environment.StackTrace);
2132                         }
2133                         return 0;
2134                 }
2135
2136                 void AccumulateDestroyedHandles (Control c, ArrayList list)
2137                 {
2138                         DebugHelper.Enter ();
2139                         if (c != null) {
2140
2141                                 Control[] controls = c.Controls.GetAllControls ();
2142
2143                                 DebugHelper.WriteLine  ("Checking control:0x{0:x}", c.IsHandleCreated ? c.Handle.ToInt32() : 0);
2144
2145                                 if (c.IsHandleCreated && !c.IsDisposed) {
2146                                         Hwnd hwnd = Hwnd.ObjectFromHandle(c.Handle);
2147
2148                                         DriverDebug (" + adding {0} to the list of zombie windows", XplatUI.Window (hwnd.Handle));
2149                                         DriverDebug (" + parent X window is {0:X}", XGetParent (hwnd.whole_window).ToInt32());
2150
2151                                         list.Add (hwnd);
2152                                         CleanupCachedWindows (hwnd);
2153                                 }
2154
2155                                 for (int  i = 0; i < controls.Length; i ++) {
2156                                         AccumulateDestroyedHandles (controls[i], list);
2157                                 }
2158                         }
2159                         DebugHelper.Leave ();
2160                 }
2161
2162                 void CleanupCachedWindows (Hwnd hwnd)
2163                 {
2164                         if (ActiveWindow == hwnd.Handle) {
2165                                 SendMessage(hwnd.client_window, Msg.WM_ACTIVATE, (IntPtr)WindowActiveFlags.WA_INACTIVE, IntPtr.Zero);
2166                                 ActiveWindow = IntPtr.Zero;
2167                         }
2168
2169                         if (FocusWindow == hwnd.Handle) {
2170                                 SendMessage(hwnd.client_window, Msg.WM_KILLFOCUS, IntPtr.Zero, IntPtr.Zero);
2171                                 FocusWindow = IntPtr.Zero;
2172                         }
2173
2174                         if (Grab.Hwnd == hwnd.Handle) {
2175                                 Grab.Hwnd = IntPtr.Zero;
2176                                 Grab.Confined = false;
2177                         }
2178
2179                         DestroyCaret (hwnd.Handle);
2180                 }
2181
2182                 void PerformNCCalc(Hwnd hwnd) {
2183                         XplatUIWin32.NCCALCSIZE_PARAMS  ncp;
2184                         IntPtr                          ptr;
2185                         Rectangle                       rect;
2186
2187                         rect = new Rectangle (0, 0, hwnd.Width, hwnd.Height);
2188
2189                         ncp = new XplatUIWin32.NCCALCSIZE_PARAMS();
2190                         ptr = Marshal.AllocHGlobal(Marshal.SizeOf(ncp));
2191
2192                         ncp.rgrc1.left = rect.Left;
2193                         ncp.rgrc1.top = rect.Top;
2194                         ncp.rgrc1.right = rect.Right;
2195                         ncp.rgrc1.bottom = rect.Bottom;
2196
2197                         Marshal.StructureToPtr(ncp, ptr, true);
2198                         NativeWindow.WndProc(hwnd.client_window, Msg.WM_NCCALCSIZE, (IntPtr)1, ptr);
2199                         ncp = (XplatUIWin32.NCCALCSIZE_PARAMS)Marshal.PtrToStructure(ptr, typeof(XplatUIWin32.NCCALCSIZE_PARAMS));
2200                         Marshal.FreeHGlobal(ptr);
2201
2202
2203                         rect = new Rectangle(ncp.rgrc1.left, ncp.rgrc1.top, ncp.rgrc1.right - ncp.rgrc1.left, ncp.rgrc1.bottom - ncp.rgrc1.top);
2204                         hwnd.ClientRect = rect;
2205
2206                         rect = TranslateClientRectangleToXClientRectangle (hwnd);
2207
2208                         if (hwnd.visible) {
2209                                 MoveResizeWindow (DisplayHandle, hwnd.client_window, rect.X, rect.Y, rect.Width, rect.Height);
2210                         }
2211
2212                         AddExpose (hwnd, hwnd.WholeWindow == hwnd.ClientWindow, 0, 0, hwnd.Width, hwnd.Height);
2213                 }
2214                 #endregion      // Methods
2215
2216                 #region Callbacks
2217                 void MouseHover(object sender, EventArgs e) {
2218                         XEvent  xevent;
2219                         Hwnd    hwnd;
2220
2221                         HoverState.Timer.Enabled = false;
2222
2223                         if (HoverState.Window != IntPtr.Zero) {
2224                                 hwnd = Hwnd.GetObjectFromWindow(HoverState.Window);
2225                                 if (hwnd != null) {
2226                                         xevent = new XEvent ();
2227
2228                                         xevent.type = XEventName.ClientMessage;
2229                                         xevent.ClientMessageEvent.display = DisplayHandle;
2230                                         xevent.ClientMessageEvent.window = HoverState.Window;
2231                                         xevent.ClientMessageEvent.message_type = HoverState.Atom;
2232                                         xevent.ClientMessageEvent.format = 32;
2233                                         xevent.ClientMessageEvent.ptr1 = (IntPtr) (HoverState.Y << 16 | HoverState.X);
2234
2235                                         hwnd.Queue.EnqueueLocked (xevent);
2236
2237                                         WakeupMain ();
2238                                 }
2239                         }
2240                 }
2241
2242                 void CaretCallback(object sender, EventArgs e) {
2243                         if (Caret.Paused) {
2244                                 return;
2245                         }
2246                         Caret.On = !Caret.On;
2247
2248                         XDrawLine(DisplayHandle, Caret.Hwnd, Caret.gc, Caret.X, Caret.Y, Caret.X, Caret.Y + Caret.Height);
2249                 }
2250                 #endregion      // Callbacks
2251
2252                 #region Public Properties
2253
2254                 internal override int CaptionHeight {
2255                         get {
2256                                 return 19;
2257                         }
2258                 }
2259
2260                 internal override  Size CursorSize {
2261                         get {
2262                                 int     x;
2263                                 int     y;
2264
2265                                 if (XQueryBestCursor(DisplayHandle, RootWindow, 32, 32, out x, out y) != 0) {
2266                                         return new Size(x, y);
2267                                 } else {
2268                                         return new Size(16, 16);
2269                                 }
2270                         }
2271                 }
2272
2273                 internal override  bool DragFullWindows {
2274                         get {
2275                                 return true;
2276                         }
2277                 }
2278
2279                 internal override  Size DragSize {
2280                         get {
2281                                 return new Size(4, 4);
2282                         }
2283                 }
2284
2285                 internal override  Size FrameBorderSize {
2286                         get {
2287                                 return new Size (4, 4);
2288                         }
2289                 }
2290
2291                 internal override  Size IconSize {
2292                         get {
2293                                 IntPtr          list;
2294                                 XIconSize       size;
2295                                 int             count;
2296
2297                                 if (XGetIconSizes(DisplayHandle, RootWindow, out list, out count) != 0) {
2298                                         long            current;
2299                                         int             largest;
2300
2301                                         current = (long)list;
2302                                         largest = 0;
2303
2304                                         size = new XIconSize();
2305
2306                                         for (int i = 0; i < count; i++) {
2307                                                 size = (XIconSize)Marshal.PtrToStructure((IntPtr)current, size.GetType());
2308                                                 current += Marshal.SizeOf(size);
2309
2310                                                 // Look for our preferred size
2311                                                 if (size.min_width == 32) {
2312                                                         XFree(list);
2313                                                         return new Size(32, 32);
2314                                                 }
2315
2316                                                 if (size.max_width == 32) {
2317                                                         XFree(list);
2318                                                         return new Size(32, 32);
2319                                                 }
2320
2321                                                 if (size.min_width < 32 && size.max_width > 32) {
2322                                                         int     x;
2323
2324                                                         // check if we can fit one
2325                                                         x = size.min_width;
2326                                                         while (x < size.max_width) {
2327                                                                 x += size.width_inc;
2328                                                                 if (x == 32) {
2329                                                                         XFree(list);
2330                                                                         return new Size(32, 32);
2331                                                                 }
2332                                                         }
2333                                                 }
2334
2335                                                 if (largest < size.max_width) {
2336                                                         largest = size.max_width;
2337                                                 }
2338                                         }
2339
2340                                         // We didn't find a match or we wouldn't be here
2341                                         return new Size(largest, largest);
2342
2343                                 } else {
2344                                         return new Size(32, 32);
2345                                 }
2346                         }
2347                 }
2348
2349                 internal override int KeyboardSpeed {
2350                         get{
2351                                 //
2352                                 // A lot harder: need to do:
2353                                 // XkbQueryExtension(0x08051008, 0xbfffdf4c, 0xbfffdf50, 0xbfffdf54, 0xbfffdf58)       = 1
2354                                 // XkbAllocKeyboard(0x08051008, 0xbfffdf4c, 0xbfffdf50, 0xbfffdf54, 0xbfffdf58)        = 0x080517a8
2355                                 // XkbGetControls(0x08051008, 1, 0x080517a8, 0xbfffdf54, 0xbfffdf58)                   = 0
2356                                 //
2357                                 // And from that we can tell the repetition rate
2358                                 //
2359                                 // Notice, the values must map to:
2360                                 //   [0, 31] which maps to 2.5 to 30 repetitions per second.
2361                                 //
2362                                 return 0;
2363                         }
2364                 }
2365
2366                 internal override int KeyboardDelay {
2367                         get {
2368                                 //
2369                                 // Return values must range from 0 to 4, 0 meaning 250ms,
2370                                 // and 4 meaning 1000 ms.
2371                                 //
2372                                 return 1; // ie, 500 ms
2373                         }
2374                 }
2375
2376                 internal override  Size MaxWindowTrackSize {
2377                         get {
2378                                 return new Size (WorkingArea.Width, WorkingArea.Height);
2379                         }
2380                 }
2381
2382                 internal override bool MenuAccessKeysUnderlined {
2383                         get {
2384                                 return false;
2385                         }
2386                 }
2387
2388                 internal override  Size MinimizedWindowSpacingSize {
2389                         get {
2390                                 return new Size(1, 1);
2391                         }
2392                 }
2393
2394                 internal override  Size MinimumWindowSize {
2395                         get {
2396                                 return new Size(110, 22);
2397                         }
2398                 }
2399
2400                 internal override Size MinimumFixedToolWindowSize {
2401                         get { return new Size (27, 22); }
2402                 }
2403
2404                 internal override Size MinimumSizeableToolWindowSize {
2405                         get { return new Size (37, 22); }
2406                 }
2407
2408                 internal override Size MinimumNoBorderWindowSize {
2409                         get { return new Size (2, 2); }
2410                 }
2411
2412                 internal override Keys ModifierKeys {
2413                         get {
2414                                 return Keyboard.ModifierKeys;
2415                         }
2416                 }
2417
2418                 internal override  Size SmallIconSize {
2419                         get {
2420                                 IntPtr          list;
2421                                 XIconSize       size;
2422                                 int             count;
2423
2424                                 if (XGetIconSizes(DisplayHandle, RootWindow, out list, out count) != 0) {
2425                                         long            current;
2426                                         int             smallest;
2427
2428                                         current = (long)list;
2429                                         smallest = 0;
2430
2431                                         size = new XIconSize();
2432
2433                                         for (int i = 0; i < count; i++) {
2434                                                 size = (XIconSize)Marshal.PtrToStructure((IntPtr)current, size.GetType());
2435                                                 current += Marshal.SizeOf(size);
2436
2437                                                 // Look for our preferred size
2438                                                 if (size.min_width == 16) {
2439                                                         XFree(list);
2440                                                         return new Size(16, 16);
2441                                                 }
2442
2443                                                 if (size.max_width == 16) {
2444                                                         XFree(list);
2445                                                         return new Size(16, 16);
2446                                                 }
2447
2448                                                 if (size.min_width < 16 && size.max_width > 16) {
2449                                                         int     x;
2450
2451                                                         // check if we can fit one
2452                                                         x = size.min_width;
2453                                                         while (x < size.max_width) {
2454                                                                 x += size.width_inc;
2455                                                                 if (x == 16) {
2456                                                                         XFree(list);
2457                                                                         return new Size(16, 16);
2458                                                                 }
2459                                                         }
2460                                                 }
2461
2462                                                 if (smallest == 0 || smallest > size.min_width) {
2463                                                         smallest = size.min_width;
2464                                                 }
2465                                         }
2466
2467                                         // We didn't find a match or we wouldn't be here
2468                                         return new Size(smallest, smallest);
2469
2470                                 } else {
2471                                         return new Size(16, 16);
2472                                 }
2473                         }
2474                 }
2475
2476                 internal override  int MouseButtonCount {
2477                         get {
2478                                 return 3;
2479                         }
2480                 }
2481
2482                 internal override  bool MouseButtonsSwapped {
2483                         get {
2484                                 return false;   // FIXME - how to detect?
2485                         }
2486                 }
2487
2488                 internal override Point MousePosition {
2489                         get {
2490                                 return mouse_position;
2491                         }
2492                 }
2493
2494                 internal override Size MouseHoverSize {
2495                         get {
2496                                 return new Size (1, 1);
2497                         }
2498                 }
2499
2500                 internal override int MouseHoverTime {
2501                         get {
2502                                 return HoverState.Interval;
2503                         }
2504                 }
2505
2506
2507
2508                 internal override  bool MouseWheelPresent {
2509                         get {
2510                                 return true;    // FIXME - how to detect?
2511                         }
2512                 }
2513
2514                 internal override MouseButtons MouseButtons {
2515                         get {
2516                                 return MouseState;
2517                         }
2518                 }
2519
2520                 internal override  Rectangle VirtualScreen {
2521                         get {
2522                                 IntPtr                  actual_atom;
2523                                 int                     actual_format;
2524                                 IntPtr                  nitems;
2525                                 IntPtr                  bytes_after;
2526                                 IntPtr                  prop = IntPtr.Zero;
2527                                 int                     width;
2528                                 int                     height;
2529
2530                                 XGetWindowProperty(DisplayHandle, RootWindow, _NET_DESKTOP_GEOMETRY, IntPtr.Zero, new IntPtr (256), false, (IntPtr)Atom.XA_CARDINAL, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
2531                                 if ((long)nitems < 2)
2532                                         goto failsafe;
2533
2534                                 width = Marshal.ReadIntPtr(prop, 0).ToInt32();
2535                                 height = Marshal.ReadIntPtr(prop, IntPtr.Size).ToInt32();
2536
2537                                 XFree(prop);
2538
2539                                 return new Rectangle(0, 0, width, height);
2540
2541                         failsafe:
2542                                 XWindowAttributes       attributes=new XWindowAttributes();
2543
2544                                 lock (XlibLock) {
2545                                         XGetWindowAttributes(DisplayHandle, XRootWindow(DisplayHandle, 0), ref attributes);
2546                                 }
2547
2548                                 return new Rectangle(0, 0, attributes.width, attributes.height);
2549                         }
2550                 }
2551
2552                 internal override  Rectangle WorkingArea {
2553                         get {
2554                                 IntPtr                  actual_atom;
2555                                 int                     actual_format;
2556                                 IntPtr                  nitems;
2557                                 IntPtr                  bytes_after;
2558                                 IntPtr                  prop = IntPtr.Zero;
2559                                 int                     width;
2560                                 int                     height;
2561                                 int                     current_desktop;
2562                                 int                     x;
2563                                 int                     y;
2564
2565                                 XGetWindowProperty(DisplayHandle, RootWindow, _NET_CURRENT_DESKTOP, IntPtr.Zero, new IntPtr(1), false, (IntPtr)Atom.XA_CARDINAL, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
2566                                 if ((long)nitems < 1) {
2567                                         goto failsafe;
2568                                 }
2569
2570                                 current_desktop = Marshal.ReadIntPtr(prop, 0).ToInt32();
2571                                 XFree(prop);
2572
2573                                 XGetWindowProperty(DisplayHandle, RootWindow, _NET_WORKAREA, IntPtr.Zero, new IntPtr (256), false, (IntPtr)Atom.XA_CARDINAL, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
2574                                 if ((long)nitems < 4 * (current_desktop + 1)) {
2575                                         goto failsafe;
2576                                 }
2577
2578                                 x = Marshal.ReadIntPtr(prop, IntPtr.Size * 4 * current_desktop).ToInt32();
2579                                 y = Marshal.ReadIntPtr(prop, IntPtr.Size * 4 * current_desktop + IntPtr.Size).ToInt32();
2580                                 width = Marshal.ReadIntPtr(prop, IntPtr.Size * 4 * current_desktop + IntPtr.Size * 2).ToInt32();
2581                                 height = Marshal.ReadIntPtr(prop, IntPtr.Size * 4 * current_desktop + IntPtr.Size * 3).ToInt32();
2582                                 XFree(prop);
2583
2584                                 return new Rectangle(x, y, width, height);
2585
2586                         failsafe:
2587                                 XWindowAttributes       attributes=new XWindowAttributes();
2588
2589                                 lock (XlibLock) {
2590                                         XGetWindowAttributes(DisplayHandle, XRootWindow(DisplayHandle, 0), ref attributes);
2591                                 }
2592
2593                                 return new Rectangle(0, 0, attributes.width, attributes.height);
2594                         }
2595                 }
2596
2597                 internal override Screen[] AllScreens {
2598                         get {
2599                                 if (!XineramaIsActive (DisplayHandle))
2600                                         return null;
2601                                 int nScreens;
2602                                 IntPtr xineramaScreens = XineramaQueryScreens (DisplayHandle, out nScreens);
2603                                 var screens = new Screen [nScreens];
2604                                 IntPtr current = xineramaScreens;
2605                                 for (int i = 0; i < nScreens; i++) {
2606                                         var screen = (XineramaScreenInfo)Marshal.PtrToStructure (current,
2607                                                 typeof (XineramaScreenInfo));
2608                                         var screenRect = new Rectangle (screen.x_org, screen.y_org, screen.width,
2609                                                 screen.height);
2610                                         var name = string.Format ("Display {0}", screen.screen_number);
2611                                         screens [i] = new Screen (i == 0, name, screenRect, screenRect);
2612                                         current = (IntPtr)( (ulong)current + (ulong)Marshal.SizeOf(typeof (XineramaScreenInfo)));
2613                                 }
2614                                 XFree (xineramaScreens);
2615                                 return screens;
2616                         }
2617                 }
2618
2619                 internal override bool ThemesEnabled {
2620                         get {
2621                                 return XplatUIX11.themes_enabled;
2622                         }
2623                 }
2624
2625
2626                 #endregion      // Public properties
2627
2628                 #region Public Static Methods
2629                 internal override void RaiseIdle (EventArgs e)
2630                 {
2631                         if (Idle != null)
2632                                 Idle (this, e);
2633                 }
2634
2635                 internal override IntPtr InitializeDriver()
2636                 {
2637                         lock (this) {
2638                                 if (DisplayHandle==IntPtr.Zero) {
2639                                         SetDisplay(XOpenDisplay(IntPtr.Zero));
2640                                 }
2641                         }
2642                         return IntPtr.Zero;
2643                 }
2644
2645                 internal override void ShutdownDriver(IntPtr token)
2646                 {
2647                         lock (this) {
2648                                 if (DisplayHandle!=IntPtr.Zero) {
2649                                         XCloseDisplay(DisplayHandle);
2650                                         DisplayHandle=IntPtr.Zero;
2651                                 }
2652                         }
2653                 }
2654
2655                 internal override void EnableThemes()
2656                 {
2657                         themes_enabled = true;
2658                 }
2659
2660
2661                 internal override void Activate(IntPtr handle)
2662                 {
2663                         Hwnd hwnd;
2664
2665                         hwnd = Hwnd.ObjectFromHandle(handle);
2666
2667                         if (hwnd != null) {
2668                                 lock (XlibLock) {
2669                                         if (true /* the window manager supports NET_ACTIVE_WINDOW */) {
2670                                                 SendNetWMMessage(hwnd.whole_window, _NET_ACTIVE_WINDOW, (IntPtr)1, IntPtr.Zero, IntPtr.Zero);
2671                                                 XEventQueue q = null;
2672                                                 lock (unattached_timer_list) {
2673                                                         foreach (Timer t in unattached_timer_list) {
2674                                                                 if (q == null)
2675                                                                         q= (XEventQueue) MessageQueues [Thread.CurrentThread];
2676                                                                 t.thread = q.Thread;
2677                                                                 q.timer_list.Add (t);
2678                                                         }
2679                                                         unattached_timer_list.Clear ();
2680                                                 }
2681                                         }
2682 //                                      else {
2683 //                                              XRaiseWindow(DisplayHandle, handle);
2684 //                                      }
2685                                 }
2686                         }
2687                 }
2688
2689                 internal override void AudibleAlert(AlertType alert)
2690                 {
2691                         XBell(DisplayHandle, 0);
2692                         return;
2693                 }
2694
2695
2696                 internal override void CaretVisible(IntPtr handle, bool visible)
2697                 {
2698                         if (Caret.Hwnd == handle) {
2699                                 if (visible) {
2700                                         if (!Caret.Visible) {
2701                                                 Caret.Visible = true;
2702                                                 ShowCaret();
2703                                                 Caret.Timer.Start();
2704                                         }
2705                                 } else {
2706                                         Caret.Visible = false;
2707                                         Caret.Timer.Stop();
2708                                         HideCaret();
2709                                 }
2710                         }
2711                 }
2712
2713                 internal override bool CalculateWindowRect(ref Rectangle ClientRect, CreateParams cp, Menu menu, out Rectangle WindowRect)
2714                 {
2715                         WindowRect = Hwnd.GetWindowRectangle (cp, menu, ClientRect);
2716                         return true;
2717                 }
2718
2719                 internal override void ClientToScreen(IntPtr handle, ref int x, ref int y)
2720                 {
2721                         int     dest_x_return;
2722                         int     dest_y_return;
2723                         IntPtr  child;
2724                         Hwnd    hwnd;
2725
2726                         hwnd = Hwnd.ObjectFromHandle(handle);
2727
2728                         lock (XlibLock) {
2729                                 XTranslateCoordinates(DisplayHandle, hwnd.client_window, RootWindow, x, y, out dest_x_return, out dest_y_return, out child);
2730                         }
2731
2732                         x = dest_x_return;
2733                         y = dest_y_return;
2734                 }
2735
2736                 internal override int[] ClipboardAvailableFormats(IntPtr handle)
2737                 {
2738                         DataFormats.Format      f;
2739                         int[]                   result;
2740
2741                         f = DataFormats.Format.List;
2742
2743                         if (XGetSelectionOwner(DisplayHandle, CLIPBOARD) == IntPtr.Zero) {
2744                                 return null;
2745                         }
2746
2747                         Clipboard.Formats = new ArrayList();
2748
2749                         while (f != null) {
2750                                 XConvertSelection(DisplayHandle, CLIPBOARD, (IntPtr)f.Id, (IntPtr)f.Id, FosterParent, IntPtr.Zero);
2751
2752                                 Clipboard.Enumerating = true;
2753                                 while (Clipboard.Enumerating) {
2754                                         UpdateMessageQueue(null, false);
2755                                 }
2756                                 f = f.Next;
2757                         }
2758
2759                         result = new int[Clipboard.Formats.Count];
2760
2761                         for (int i = 0; i < Clipboard.Formats.Count; i++) {
2762                                 result[i] = ((IntPtr)Clipboard.Formats[i]).ToInt32 ();
2763                         }
2764
2765                         Clipboard.Formats = null;
2766                         return result;
2767                 }
2768
2769                 internal override void ClipboardClose(IntPtr handle)
2770                 {
2771                         if (handle != ClipMagic) {
2772                                 throw new ArgumentException("handle is not a valid clipboard handle");
2773                         }
2774                         return;
2775                 }
2776
2777                 internal override int ClipboardGetID(IntPtr handle, string format)
2778                 {
2779                         if (handle != ClipMagic) {
2780                                 throw new ArgumentException("handle is not a valid clipboard handle");
2781                         }
2782
2783                         if (format == "Text" ) return (int)Atom.XA_STRING;
2784                         else if (format == "Bitmap" ) return (int)Atom.XA_BITMAP;
2785                         //else if (format == "MetaFilePict" ) return 3;
2786                         //else if (format == "SymbolicLink" ) return 4;
2787                         //else if (format == "DataInterchangeFormat" ) return 5;
2788                         //else if (format == "Tiff" ) return 6;
2789                         else if (format == "OEMText" ) return OEMTEXT.ToInt32();
2790                         else if (format == "DeviceIndependentBitmap" ) return (int)Atom.XA_PIXMAP;
2791                         else if (format == "Palette" ) return (int)Atom.XA_COLORMAP;    // Useless
2792                         //else if (format == "PenData" ) return 10;
2793                         //else if (format == "RiffAudio" ) return 11;
2794                         //else if (format == "WaveAudio" ) return 12;
2795                         else if (format == "UnicodeText" ) return UTF16_STRING.ToInt32();
2796                         //else if (format == "EnhancedMetafile" ) return 14;
2797                         //else if (format == "FileDrop" ) return 15;
2798                         //else if (format == "Locale" ) return 16;
2799                         else if (format == "Rich Text Format") return RICHTEXTFORMAT.ToInt32 ();
2800
2801                         return XInternAtom(DisplayHandle, format, false).ToInt32();
2802                 }
2803
2804                 internal override IntPtr ClipboardOpen(bool primary_selection)
2805                 {
2806                         if (!primary_selection)
2807                                 ClipMagic = CLIPBOARD;
2808                         else
2809                                 ClipMagic = PRIMARY;
2810                         return ClipMagic;
2811                 }
2812
2813                 internal override object ClipboardRetrieve(IntPtr handle, int type, XplatUI.ClipboardToObject converter)
2814                 {
2815                         XConvertSelection(DisplayHandle, handle, (IntPtr)type, (IntPtr)type, FosterParent, IntPtr.Zero);
2816
2817                         Clipboard.Retrieving = true;
2818                         while (Clipboard.Retrieving) {
2819                                 UpdateMessageQueue(null, false);
2820                         }
2821
2822                         return Clipboard.Item;
2823                 }
2824
2825                 internal override void ClipboardStore (IntPtr handle, object obj, int type, XplatUI.ObjectToClipboard converter, bool copy)
2826                 {
2827                         Clipboard.Converter = converter;
2828
2829                         if (obj != null) {
2830                                 Clipboard.AddSource (type, obj);
2831                                 XSetSelectionOwner (DisplayHandle, CLIPBOARD, FosterParent, IntPtr.Zero);
2832
2833                                 if (copy) {
2834                                         try {
2835                                                 var clipboardAtom = gdk_atom_intern ("CLIPBOARD", true);
2836                                                 var clipboard = gtk_clipboard_get (clipboardAtom);
2837                                                 if (clipboard != null) {
2838                                                         // for now we only store text
2839                                                         var text = Clipboard.GetRtfText ();
2840                                                         if (string.IsNullOrEmpty (text))
2841                                                                 text = Clipboard.GetPlainText ();
2842                                                         if (!string.IsNullOrEmpty (text)) {
2843                                                                 gtk_clipboard_set_text (clipboard, text, text.Length);
2844                                                                 gtk_clipboard_store (clipboard);
2845                                                         }
2846                                                 }
2847                                         } catch {
2848                                                 // ignore any errors - most likely because gtk isn't installed?
2849                                         }
2850                                 }
2851                         } else {
2852                                 // Clearing the selection
2853                                 Clipboard.ClearSources ();
2854                                 XSetSelectionOwner (DisplayHandle, CLIPBOARD, IntPtr.Zero, IntPtr.Zero);
2855                         }
2856                 }
2857
2858                 internal override void CreateCaret (IntPtr handle, int width, int height)
2859                 {
2860                         XGCValues       gc_values;
2861                         Hwnd            hwnd;
2862
2863                         hwnd = Hwnd.ObjectFromHandle(handle);
2864
2865                         if (Caret.Hwnd != IntPtr.Zero) {
2866                                 DestroyCaret(Caret.Hwnd);
2867                         }
2868
2869                         Caret.Hwnd = handle;
2870                         Caret.Window = hwnd.client_window;
2871                         Caret.Width = width;
2872                         Caret.Height = height;
2873                         Caret.Visible = false;
2874                         Caret.On = false;
2875
2876                         gc_values = new XGCValues();
2877                         gc_values.line_width = width;
2878
2879                         Caret.gc = XCreateGC(DisplayHandle, Caret.Window, new IntPtr ((int)GCFunction.GCLineWidth), ref gc_values);
2880                         if (Caret.gc == IntPtr.Zero) {
2881                                 Caret.Hwnd = IntPtr.Zero;
2882                                 return;
2883                         }
2884
2885                         XSetFunction(DisplayHandle, Caret.gc, GXFunction.GXinvert);
2886                 }
2887
2888                 internal override IntPtr CreateWindow (CreateParams cp)
2889                 {
2890                         XSetWindowAttributes    Attributes;
2891                         Hwnd                    hwnd;
2892                         Hwnd                    parent_hwnd = null;
2893                         int                     X;
2894                         int                     Y;
2895                         int                     Width;
2896                         int                     Height;
2897                         IntPtr                  ParentHandle;
2898                         IntPtr                  WholeWindow;
2899                         IntPtr                  ClientWindow;
2900                         SetWindowValuemask      ValueMask;
2901                         int[]                   atoms;
2902
2903                         hwnd = new Hwnd();
2904
2905                         Attributes = new XSetWindowAttributes();
2906                         X = cp.X;
2907                         Y = cp.Y;
2908                         Width = cp.Width;
2909                         Height = cp.Height;
2910
2911                         if (Width<1) Width=1;
2912                         if (Height<1) Height=1;
2913
2914                         if (cp.Parent != IntPtr.Zero) {
2915                                 parent_hwnd = Hwnd.ObjectFromHandle(cp.Parent);
2916                                 ParentHandle = parent_hwnd.client_window;
2917                         } else {
2918                                 if (StyleSet (cp.Style, WindowStyles.WS_CHILD)) {
2919                                         // We need to use our foster parent window until this poor child gets it's parent assigned
2920                                         ParentHandle=FosterParent;
2921                                 } else {
2922                                         ParentHandle=RootWindow;
2923                                 }
2924                         }
2925
2926                         // Set the default location location for forms.
2927                         Point next;
2928                         if (cp.control is Form) {
2929                                 next = Hwnd.GetNextStackedFormLocation (cp, parent_hwnd);
2930                                 X = next.X;
2931                                 Y = next.Y;
2932                         }
2933                         ValueMask = SetWindowValuemask.BitGravity | SetWindowValuemask.WinGravity;
2934
2935                         Attributes.bit_gravity = Gravity.NorthWestGravity;
2936                         Attributes.win_gravity = Gravity.NorthWestGravity;
2937
2938                         // Save what's under the toolwindow
2939                         if (ExStyleSet (cp.ExStyle, WindowExStyles.WS_EX_TOOLWINDOW)) {
2940                                 Attributes.save_under = true;
2941                                 ValueMask |= SetWindowValuemask.SaveUnder;
2942                         }
2943
2944
2945                         // If we're a popup without caption we override the WM
2946                         if (StyleSet (cp.Style, WindowStyles.WS_POPUP) && !StyleSet (cp.Style, WindowStyles.WS_CAPTION)) {
2947                                 Attributes.override_redirect = true;
2948                                 ValueMask |= SetWindowValuemask.OverrideRedirect;
2949                         }
2950
2951                         hwnd.x = X;
2952                         hwnd.y = Y;
2953                         hwnd.width = Width;
2954                         hwnd.height = Height;
2955                         hwnd.parent = Hwnd.ObjectFromHandle(cp.Parent);
2956                         hwnd.initial_style = cp.WindowStyle;
2957                         hwnd.initial_ex_style = cp.WindowExStyle;
2958
2959                         if (StyleSet (cp.Style, WindowStyles.WS_DISABLED)) {
2960                                 hwnd.enabled = false;
2961                         }
2962
2963                         ClientWindow = IntPtr.Zero;
2964
2965                         Size XWindowSize = TranslateWindowSizeToXWindowSize (cp);
2966                         Rectangle XClientRect = TranslateClientRectangleToXClientRectangle (hwnd, cp.control);
2967
2968                         lock (XlibLock) {
2969                                 WholeWindow = XCreateWindow(DisplayHandle, ParentHandle, X, Y, XWindowSize.Width, XWindowSize.Height, 0, (int)CreateWindowArgs.CopyFromParent, (int)CreateWindowArgs.InputOutput, IntPtr.Zero, new UIntPtr ((uint)ValueMask), ref Attributes);
2970                                 if (WholeWindow != IntPtr.Zero) {
2971                                         ValueMask &= ~(SetWindowValuemask.OverrideRedirect | SetWindowValuemask.SaveUnder);
2972
2973                                         if (CustomVisual != IntPtr.Zero && CustomColormap != IntPtr.Zero) {
2974                                                 ValueMask = SetWindowValuemask.ColorMap;
2975                                                 Attributes.colormap = CustomColormap;
2976                                         }
2977                                         ClientWindow = XCreateWindow(DisplayHandle, WholeWindow, XClientRect.X, XClientRect.Y, XClientRect.Width, XClientRect.Height, 0, (int)CreateWindowArgs.CopyFromParent, (int)CreateWindowArgs.InputOutput, CustomVisual, new UIntPtr ((uint)ValueMask), ref Attributes);
2978                                 }
2979                         }
2980
2981                         if ((WholeWindow == IntPtr.Zero) || (ClientWindow == IntPtr.Zero)) {
2982                                 throw new Exception("Could not create X11 windows");
2983                         }
2984
2985                         hwnd.Queue = ThreadQueue(Thread.CurrentThread);
2986                         hwnd.WholeWindow = WholeWindow;
2987                         hwnd.ClientWindow = ClientWindow;
2988
2989                         DriverDebug("Created window {0:X} / {1:X} parent {2:X}, Style {3}, ExStyle {4}", ClientWindow.ToInt32(), WholeWindow.ToInt32(), hwnd.parent != null ? hwnd.parent.Handle.ToInt32() : 0, (WindowStyles)cp.Style, (WindowExStyles)cp.ExStyle);
2990
2991                         if (!StyleSet (cp.Style, WindowStyles.WS_CHILD)) {
2992                                 if ((X != unchecked((int)0x80000000)) && (Y != unchecked((int)0x80000000))) {
2993                                         XSizeHints      hints;
2994
2995                                         hints = new XSizeHints();
2996                                         hints.x = X;
2997                                         hints.y = Y;
2998                                         hints.flags = (IntPtr)(XSizeHintsFlags.USPosition | XSizeHintsFlags.PPosition);
2999                                         XSetWMNormalHints(DisplayHandle, WholeWindow, ref hints);
3000                                 }
3001                         }
3002
3003                         lock (XlibLock) {
3004                                 XSelectInput(DisplayHandle, hwnd.whole_window, new IntPtr ((int)(SelectInputMask | EventMask.StructureNotifyMask | EventMask.PropertyChangeMask | Keyboard.KeyEventMask)));
3005                                 if (hwnd.whole_window != hwnd.client_window)
3006                                         XSelectInput(DisplayHandle, hwnd.client_window, new IntPtr ((int)(SelectInputMask | EventMask.StructureNotifyMask | Keyboard.KeyEventMask)));
3007                         }
3008
3009                         if (ExStyleSet (cp.ExStyle, WindowExStyles.WS_EX_TOPMOST))
3010                                 SetTopmost(hwnd.whole_window, true);
3011
3012                         SetWMStyles(hwnd, cp);
3013
3014                         // set the group leader
3015                         XWMHints wm_hints = new XWMHints ();
3016
3017                         wm_hints.flags = (IntPtr)(XWMHintsFlags.InputHint | XWMHintsFlags.StateHint | XWMHintsFlags.WindowGroupHint);
3018                         wm_hints.input = !StyleSet (cp.Style, WindowStyles.WS_DISABLED);
3019                         wm_hints.initial_state = StyleSet (cp.Style, WindowStyles.WS_MINIMIZE) ? XInitialState.IconicState : XInitialState.NormalState;
3020
3021                         if (ParentHandle != RootWindow) {
3022                                 wm_hints.window_group = hwnd.whole_window;
3023                         } else {
3024                                 wm_hints.window_group = ParentHandle;
3025                         }
3026
3027                         lock (XlibLock) {
3028                                 XSetWMHints(DisplayHandle, hwnd.whole_window, ref wm_hints );
3029                         }
3030
3031                         if (StyleSet (cp.Style, WindowStyles.WS_MINIMIZE)) {
3032                                 SetWindowState(hwnd.Handle, FormWindowState.Minimized);
3033                         } else if (StyleSet (cp.Style, WindowStyles.WS_MAXIMIZE)) {
3034                                 SetWindowState(hwnd.Handle, FormWindowState.Maximized);
3035                         }
3036
3037                         // for now make all windows dnd enabled
3038                         Dnd.SetAllowDrop (hwnd, true);
3039
3040                         // Set caption/window title
3041                         Text(hwnd.Handle, cp.Caption);
3042
3043                         SendMessage (hwnd.Handle, Msg.WM_CREATE, (IntPtr)1, IntPtr.Zero /* XXX unused */);
3044                         SendParentNotify (hwnd.Handle, Msg.WM_CREATE, int.MaxValue, int.MaxValue);
3045
3046                         if (StyleSet (cp.Style, WindowStyles.WS_VISIBLE)) {
3047                                 hwnd.visible = true;
3048                                 MapWindow(hwnd, WindowType.Both);
3049                                 if (!(Control.FromHandle(hwnd.Handle) is Form))
3050                                         SendMessage(hwnd.Handle, Msg.WM_SHOWWINDOW, (IntPtr)1, IntPtr.Zero);
3051                         }
3052
3053                         return hwnd.Handle;
3054                 }
3055
3056                 internal override IntPtr CreateWindow(IntPtr Parent, int X, int Y, int Width, int Height)
3057                 {
3058                         CreateParams create_params = new CreateParams();
3059
3060                         create_params.Caption = "";
3061                         create_params.X = X;
3062                         create_params.Y = Y;
3063                         create_params.Width = Width;
3064                         create_params.Height = Height;
3065
3066                         create_params.ClassName=XplatUI.GetDefaultClassName (GetType ());
3067                         create_params.ClassStyle = 0;
3068                         create_params.ExStyle=0;
3069                         create_params.Parent=IntPtr.Zero;
3070                         create_params.Param=0;
3071
3072                         return CreateWindow(create_params);
3073                 }
3074
3075                 internal override IntPtr DefineCursor(Bitmap bitmap, Bitmap mask, Color cursor_pixel, Color mask_pixel, int xHotSpot, int yHotSpot)
3076                 {
3077                         IntPtr  cursor;
3078                         Bitmap  cursor_bitmap;
3079                         Bitmap  cursor_mask;
3080                         Byte[]  cursor_bits;
3081                         Byte[]  mask_bits;
3082                         Color   c_pixel;
3083                         Color   m_pixel;
3084                         int     width;
3085                         int     height;
3086                         IntPtr  cursor_pixmap;
3087                         IntPtr  mask_pixmap;
3088                         XColor  fg;
3089                         XColor  bg;
3090                         bool    and;
3091                         bool    xor;
3092
3093                         if (XQueryBestCursor(DisplayHandle, RootWindow, bitmap.Width, bitmap.Height, out width, out height) == 0) {
3094                                 return IntPtr.Zero;
3095                         }
3096
3097                         // Win32 only allows creation cursors of a certain size
3098                         if ((bitmap.Width != width) || (bitmap.Width != height)) {
3099                                 cursor_bitmap = new Bitmap(bitmap, new Size(width, height));
3100                                 cursor_mask = new Bitmap(mask, new Size(width, height));
3101                         } else {
3102                                 cursor_bitmap = bitmap;
3103                                 cursor_mask = mask;
3104                         }
3105
3106                         width = cursor_bitmap.Width;
3107                         height = cursor_bitmap.Height;
3108
3109                         cursor_bits = new Byte[(width / 8) * height];
3110                         mask_bits = new Byte[(width / 8) * height];
3111
3112                         for (int y = 0; y < height; y++) {
3113                                 for (int x = 0; x < width; x++) {
3114                                         c_pixel = cursor_bitmap.GetPixel(x, y);
3115                                         m_pixel = cursor_mask.GetPixel(x, y);
3116
3117                                         and = c_pixel == cursor_pixel;
3118                                         xor = m_pixel == mask_pixel;
3119
3120                                         if (!and && !xor) {
3121                                                 // Black
3122                                                 // cursor_bits[y * width / 8 + x / 8] &= (byte)~((1 << (x % 8)));       // The bit already is 0
3123                                                 mask_bits[y * width / 8 + x / 8] |= (byte)(1 << (x % 8));
3124                                         } else if (and && !xor) {
3125                                                 // White
3126                                                 cursor_bits[y * width / 8 + x / 8] |= (byte)(1 << (x % 8));
3127                                                 mask_bits[y * width / 8 + x / 8] |= (byte)(1 << (x % 8));
3128 #if notneeded
3129                                         } else if (and && !xor) {
3130                                                 // Screen
3131                                         } else if (and && xor) {
3132                                                 // Inverse Screen
3133
3134                                                 // X11 doesn't know the 'reverse screen' concept, so we'll treat them the same
3135                                                 // we want both to be 0 so nothing to be done
3136                                                 //cursor_bits[y * width / 8 + x / 8] &= (byte)~((1 << (x % 8)));
3137                                                 //mask_bits[y * width / 8 + x / 8] |= (byte)(01 << (x % 8));
3138 #endif
3139                                         }
3140                                 }
3141                         }
3142
3143                         cursor_pixmap = XCreatePixmapFromBitmapData(DisplayHandle, RootWindow, cursor_bits, width, height, (IntPtr)1, (IntPtr)0, 1);
3144                         mask_pixmap = XCreatePixmapFromBitmapData(DisplayHandle, RootWindow, mask_bits, width, height, (IntPtr)1, (IntPtr)0, 1);
3145                         fg = new XColor();
3146                         bg = new XColor();
3147
3148                         fg.pixel = XWhitePixel(DisplayHandle, ScreenNo);
3149                         fg.red = (ushort)65535;
3150                         fg.green = (ushort)65535;
3151                         fg.blue = (ushort)65535;
3152
3153                         bg.pixel = XBlackPixel(DisplayHandle, ScreenNo);
3154
3155                         cursor = XCreatePixmapCursor(DisplayHandle, cursor_pixmap, mask_pixmap, ref fg, ref bg, xHotSpot, yHotSpot);
3156
3157                         XFreePixmap(DisplayHandle, cursor_pixmap);
3158                         XFreePixmap(DisplayHandle, mask_pixmap);
3159
3160                         return cursor;
3161                 }
3162
3163                 internal override Bitmap DefineStdCursorBitmap (StdCursor id)
3164                 {
3165                         CursorFontShape shape;
3166                         string name;
3167                         IntPtr theme;
3168                         int size;
3169                         Bitmap bmp = null;
3170
3171                         try {
3172                                 shape = StdCursorToFontShape (id);
3173                                 name = shape.ToString ().Replace ("XC_", string.Empty);
3174                                 size = XcursorGetDefaultSize (DisplayHandle);
3175                                 theme = XcursorGetTheme (DisplayHandle);
3176                                 IntPtr images_ptr = XcursorLibraryLoadImages (name, theme, size);
3177                                 DriverDebug ("DefineStdCursorBitmap, id={0}, #id={1}, name{2}, size={3}, theme: {4}, images_ptr={5}", id, (int) id, name, size, Marshal.PtrToStringAnsi (theme), images_ptr);
3178
3179                                 if (images_ptr == IntPtr.Zero) {
3180                                         return null;
3181                                 }
3182
3183                                 XcursorImages images = (XcursorImages) Marshal.PtrToStructure (images_ptr, typeof (XcursorImages));
3184                                 DriverDebug ("DefineStdCursorBitmap, cursor has {0} images", images.nimage);
3185
3186                                 if (images.nimage > 0) {
3187                                         // We only care about the first image.
3188                                         XcursorImage image = (XcursorImage)Marshal.PtrToStructure (Marshal.ReadIntPtr (images.images), typeof (XcursorImage));
3189
3190                                         DriverDebug ("DefineStdCursorBitmap, loaded image <size={0}, height={1}, width={2}, xhot={3}, yhot={4}, pixels={5}", image.size, image.height, image.width, image.xhot, image.yhot, image.pixels);
3191                                         // A sanity check
3192                                         if (image.width <= short.MaxValue && image.height <= short.MaxValue) {
3193                                                 int [] pixels = new int [image.width * image.height];
3194                                                 Marshal.Copy (image.pixels, pixels, 0, pixels.Length);
3195                                                 bmp = new Bitmap (image.width, image.height);
3196                                                 for (int w = 0; w < image.width; w++) {
3197                                                         for (int h = 0; h < image.height; h++) {
3198                                                                 bmp.SetPixel (w, h, Color.FromArgb (pixels [h * image.width + w]));
3199                                                         }
3200                                                 }
3201                                         }
3202                                 }
3203
3204                                 XcursorImagesDestroy (images_ptr);
3205
3206                         } catch (DllNotFoundException ex) {
3207                                 Console.WriteLine ("Could not load libXcursor: " + ex.Message + " (" + ex.GetType ().Name + ")");
3208                                 return null;
3209                         }
3210
3211                         return bmp;
3212                 }
3213
3214
3215                 internal override IntPtr DefineStdCursor(StdCursor id)
3216                 {
3217                         CursorFontShape shape;
3218                         IntPtr          cursor;
3219
3220                         shape = StdCursorToFontShape (id);
3221
3222                         lock (XlibLock) {
3223                                 cursor = XCreateFontCursor(DisplayHandle, shape);
3224                         }
3225                         return cursor;
3226                 }
3227
3228                 internal static CursorFontShape StdCursorToFontShape (StdCursor id)
3229                 {
3230                         CursorFontShape shape;
3231                         // FIXME - define missing shapes
3232
3233                         switch (id) {
3234                                 case StdCursor.AppStarting: {
3235                                         shape = CursorFontShape.XC_watch;
3236                                         break;
3237                                 }
3238
3239                                 case StdCursor.Arrow: {
3240                                         shape = CursorFontShape.XC_top_left_arrow;
3241                                         break;
3242                                 }
3243
3244                                 case StdCursor.Cross: {
3245                                         shape = CursorFontShape.XC_crosshair;
3246                                         break;
3247                                 }
3248
3249                                 case StdCursor.Default: {
3250                                         shape = CursorFontShape.XC_top_left_arrow;
3251                                         break;
3252                                 }
3253
3254                                 case StdCursor.Hand: {
3255                                         shape = CursorFontShape.XC_hand1;
3256                                         break;
3257                                 }
3258
3259                                 case StdCursor.Help: {
3260                                         shape = CursorFontShape.XC_question_arrow;
3261                                         break;
3262                                 }
3263
3264                                 case StdCursor.HSplit: {
3265                                         shape = CursorFontShape.XC_sb_v_double_arrow;
3266                                         break;
3267                                 }
3268
3269                                 case StdCursor.IBeam: {
3270                                         shape = CursorFontShape.XC_xterm;
3271                                         break;
3272                                 }
3273
3274                                 case StdCursor.No: {
3275                                         shape = CursorFontShape.XC_circle;
3276                                         break;
3277                                 }
3278
3279                                 case StdCursor.NoMove2D: {
3280                                         shape = CursorFontShape.XC_fleur;
3281                                         break;
3282                                 }
3283
3284                                 case StdCursor.NoMoveHoriz: {
3285                                         shape = CursorFontShape.XC_fleur;
3286                                         break;
3287                                 }
3288
3289                                 case StdCursor.NoMoveVert: {
3290                                         shape = CursorFontShape.XC_fleur;
3291                                         break;
3292                                 }
3293
3294                                 case StdCursor.PanEast: {
3295                                         shape = CursorFontShape.XC_fleur;
3296                                         break;
3297                                 }
3298
3299                                 case StdCursor.PanNE: {
3300                                         shape = CursorFontShape.XC_fleur;
3301                                         break;
3302                                 }
3303
3304                                 case StdCursor.PanNorth: {
3305                                         shape = CursorFontShape.XC_fleur;
3306                                         break;
3307                                 }
3308
3309                                 case StdCursor.PanNW: {
3310                                         shape = CursorFontShape.XC_fleur;
3311                                         break;
3312                                 }
3313
3314                                 case StdCursor.PanSE: {
3315                                         shape = CursorFontShape.XC_fleur;
3316                                         break;
3317                                 }
3318
3319                                 case StdCursor.PanSouth: {
3320                                         shape = CursorFontShape.XC_fleur;
3321                                         break;
3322                                 }
3323
3324                                 case StdCursor.PanSW: {
3325                                         shape = CursorFontShape.XC_fleur;
3326                                         break;
3327                                 }
3328
3329                                 case StdCursor.PanWest: {
3330                                         shape = CursorFontShape.XC_sizing;
3331                                         break;
3332                                 }
3333
3334                                 case StdCursor.SizeAll: {
3335                                         shape = CursorFontShape.XC_fleur;
3336                                         break;
3337                                 }
3338
3339                                 case StdCursor.SizeNESW: {
3340                                         shape = CursorFontShape.XC_top_right_corner;
3341                                         break;
3342                                 }
3343
3344                                 case StdCursor.SizeNS: {
3345                                         shape = CursorFontShape.XC_sb_v_double_arrow;
3346                                         break;
3347                                 }
3348
3349                                 case StdCursor.SizeNWSE: {
3350                                         shape = CursorFontShape.XC_top_left_corner;
3351                                         break;
3352                                 }
3353
3354                                 case StdCursor.SizeWE: {
3355                                         shape = CursorFontShape.XC_sb_h_double_arrow;
3356                                         break;
3357                                 }
3358
3359                                 case StdCursor.UpArrow: {
3360                                         shape = CursorFontShape.XC_center_ptr;
3361                                         break;
3362                                 }
3363
3364                                 case StdCursor.VSplit: {
3365                                         shape = CursorFontShape.XC_sb_h_double_arrow;
3366                                         break;
3367                                 }
3368
3369                                 case StdCursor.WaitCursor: {
3370                                         shape = CursorFontShape.XC_watch;
3371                                         break;
3372                                 }
3373
3374                                 default: {
3375                                         shape = (CursorFontShape) 0;
3376                                         break;
3377                                 }
3378                         }
3379
3380                         return shape;
3381                 }
3382
3383                 internal override IntPtr DefWndProc(ref Message msg)
3384                 {
3385                         switch ((Msg)msg.Msg) {
3386
3387                                 case Msg.WM_IME_COMPOSITION:
3388                                         string s = Keyboard.GetCompositionString ();
3389                                         foreach (char c in s)
3390                                                 SendMessage (msg.HWnd, Msg.WM_IME_CHAR, (IntPtr) c, msg.LParam);
3391                                         return IntPtr.Zero;
3392
3393                                 case Msg.WM_IME_CHAR:
3394                                         // On Windows API it sends two WM_CHAR messages for each byte, but
3395                                         // I wonder if it is worthy to emulate it (also no idea how to
3396                                         // reconstruct those bytes into chars).
3397                                         SendMessage (msg.HWnd, Msg.WM_CHAR, msg.WParam, msg.LParam);
3398                                         return IntPtr.Zero;
3399
3400                                 case Msg.WM_PAINT: {
3401                                         Hwnd hwnd;
3402
3403                                         hwnd = Hwnd.GetObjectFromWindow(msg.HWnd);
3404                                         if (hwnd != null) {
3405                                                 hwnd.expose_pending = false;
3406                                         }
3407
3408                                         return IntPtr.Zero;
3409                                 }
3410
3411                                 case Msg.WM_NCPAINT: {
3412                                         Hwnd hwnd;
3413
3414                                         hwnd = Hwnd.GetObjectFromWindow(msg.HWnd);
3415                                         if (hwnd != null) {
3416                                                 hwnd.nc_expose_pending = false;
3417                                         }
3418
3419                                         return IntPtr.Zero;
3420                                 }
3421
3422                                 case Msg.WM_NCCALCSIZE: {
3423                                         Hwnd hwnd;
3424
3425                                         if (msg.WParam == (IntPtr)1) {
3426                                                 hwnd = Hwnd.GetObjectFromWindow (msg.HWnd);
3427
3428                                                 XplatUIWin32.NCCALCSIZE_PARAMS ncp;
3429                                                 ncp = (XplatUIWin32.NCCALCSIZE_PARAMS)Marshal.PtrToStructure (msg.LParam, typeof (XplatUIWin32.NCCALCSIZE_PARAMS));
3430
3431                                                 // Add all the stuff X is supposed to draw.
3432                                                 Control ctrl = Control.FromHandle (hwnd.Handle);
3433
3434                                                 if (ctrl != null) {
3435                                                         Hwnd.Borders rect = Hwnd.GetBorders (ctrl.GetCreateParams (), null);
3436
3437                                                         ncp.rgrc1.top += rect.top;
3438                                                         ncp.rgrc1.bottom -= rect.bottom;
3439                                                         ncp.rgrc1.left += rect.left;
3440                                                         ncp.rgrc1.right -= rect.right;
3441
3442                                                         Marshal.StructureToPtr (ncp, msg.LParam, true);
3443                                                 }
3444                                         }
3445
3446                                         return IntPtr.Zero;
3447                                 }
3448
3449                                 case Msg.WM_CONTEXTMENU: {
3450                                         Hwnd hwnd;
3451
3452                                         hwnd = Hwnd.GetObjectFromWindow(msg.HWnd);
3453
3454                                         if ((hwnd != null) && (hwnd.parent != null)) {
3455                                                 SendMessage(hwnd.parent.client_window, Msg.WM_CONTEXTMENU, msg.WParam, msg.LParam);
3456                                         }
3457                                         return IntPtr.Zero;
3458                                 }
3459
3460                                 case Msg.WM_MOUSEWHEEL: {
3461                                         Hwnd hwnd;
3462
3463                                         hwnd = Hwnd.GetObjectFromWindow(msg.HWnd);
3464
3465                                         if ((hwnd != null) && (hwnd.parent != null)) {
3466                                                 SendMessage(hwnd.parent.client_window, Msg.WM_MOUSEWHEEL, msg.WParam, msg.LParam);
3467                                                 if (msg.Result == IntPtr.Zero) {
3468                                                         return IntPtr.Zero;
3469                                                 }
3470                                         }
3471                                         return IntPtr.Zero;
3472                                 }
3473
3474                                 case Msg.WM_SETCURSOR: {
3475                                         Hwnd    hwnd;
3476
3477                                         hwnd = Hwnd.GetObjectFromWindow(msg.HWnd);
3478                                         if (hwnd == null)
3479                                                 break; // not sure how this happens, but it does
3480
3481                                         // Pass to parent window first
3482                                         while ((hwnd.parent != null) && (msg.Result == IntPtr.Zero)) {
3483                                                 hwnd = hwnd.parent;
3484                                                 msg.Result = NativeWindow.WndProc(hwnd.Handle, Msg.WM_SETCURSOR, msg.HWnd, msg.LParam);
3485                                         }
3486
3487                                         if (msg.Result == IntPtr.Zero) {
3488                                                 IntPtr handle;
3489
3490                                                 switch((HitTest)(msg.LParam.ToInt32() & 0xffff)) {
3491                                                         case HitTest.HTBOTTOM:          handle = Cursors.SizeNS.handle; break;
3492                                                         case HitTest.HTBORDER:          handle = Cursors.SizeNS.handle; break;
3493                                                         case HitTest.HTBOTTOMLEFT:      handle = Cursors.SizeNESW.handle; break;
3494                                                         case HitTest.HTBOTTOMRIGHT:     handle = Cursors.SizeNWSE.handle; break;
3495                                                         case HitTest.HTERROR:           if ((msg.LParam.ToInt32() >> 16) == (int)Msg.WM_LBUTTONDOWN) {
3496                                                                                                 AudibleAlert(AlertType.Default);
3497                                                                                         }
3498                                                                                         handle = Cursors.Default.handle;
3499                                                                                         break;
3500
3501                                                         case HitTest.HTHELP:            handle = Cursors.Help.handle; break;
3502                                                         case HitTest.HTLEFT:            handle = Cursors.SizeWE.handle; break;
3503                                                         case HitTest.HTRIGHT:           handle = Cursors.SizeWE.handle; break;
3504                                                         case HitTest.HTTOP:             handle = Cursors.SizeNS.handle; break;
3505                                                         case HitTest.HTTOPLEFT:         handle = Cursors.SizeNWSE.handle; break;
3506                                                         case HitTest.HTTOPRIGHT:        handle = Cursors.SizeNESW.handle; break;
3507
3508                                                         #if SameAsDefault
3509                                                         case HitTest.HTGROWBOX:
3510                                                         case HitTest.HTSIZE:
3511                                                         case HitTest.HTZOOM:
3512                                                         case HitTest.HTVSCROLL:
3513                                                         case HitTest.HTSYSMENU:
3514                                                         case HitTest.HTREDUCE:
3515                                                         case HitTest.HTNOWHERE:
3516                                                         case HitTest.HTMAXBUTTON:
3517                                                         case HitTest.HTMINBUTTON:
3518                                                         case HitTest.HTMENU:
3519                                                         case HitTest.HSCROLL:
3520                                                         case HitTest.HTBOTTOM:
3521                                                         case HitTest.HTCAPTION:
3522                                                         case HitTest.HTCLIENT:
3523                                                         case HitTest.HTCLOSE:
3524                                                         #endif
3525                                                         default: handle = Cursors.Default.handle; break;
3526                                                 }
3527                                                 SetCursor(msg.HWnd, handle);
3528                                         }
3529                                         return (IntPtr)1;
3530                                 }
3531                         }
3532                         return IntPtr.Zero;
3533                 }
3534
3535                 internal override void DestroyCaret(IntPtr handle)
3536                 {
3537                         if (Caret.Hwnd == handle) {
3538                                 if (Caret.Visible) {
3539                                         HideCaret ();
3540                                         Caret.Timer.Stop();
3541                                 }
3542                                 if (Caret.gc != IntPtr.Zero) {
3543                                         XFreeGC(DisplayHandle, Caret.gc);
3544                                         Caret.gc = IntPtr.Zero;
3545                                 }
3546                                 Caret.Hwnd = IntPtr.Zero;
3547                                 Caret.Visible = false;
3548                                 Caret.On = false;
3549                         }
3550                 }
3551
3552                 internal override void DestroyCursor(IntPtr cursor)
3553                 {
3554                         lock (XlibLock) {
3555                                 XFreeCursor(DisplayHandle, cursor);
3556                         }
3557                 }
3558
3559                 internal override void DestroyWindow(IntPtr handle)
3560                 {
3561                         Hwnd    hwnd;
3562                         hwnd = Hwnd.ObjectFromHandle(handle);
3563
3564                         // The window should never ever be a zombie here, since we should
3565                         // wait until it's completely dead before returning from
3566                         // "destroying" calls, but just in case....
3567                         if (hwnd == null || hwnd.zombie) {
3568                                 DriverDebug ("window {0:X} already destroyed", handle.ToInt32());
3569                                 return;
3570                         }
3571
3572                         DriverDebug ("Destroying window {0}", XplatUI.Window(hwnd.client_window));
3573
3574                         SendParentNotify (hwnd.Handle, Msg.WM_DESTROY, int.MaxValue, int.MaxValue);
3575
3576                         CleanupCachedWindows (hwnd);
3577
3578                         ArrayList windows = new ArrayList ();
3579
3580                         AccumulateDestroyedHandles (Control.ControlNativeWindow.ControlFromHandle(hwnd.Handle), windows);
3581
3582
3583                         foreach (Hwnd h in windows) {
3584                                 SendMessage (h.Handle, Msg.WM_DESTROY, IntPtr.Zero, IntPtr.Zero);
3585                                 h.zombie = true;
3586                         }
3587
3588                         lock (XlibLock) {
3589                                 if (hwnd.whole_window != IntPtr.Zero) {
3590                                         DriverDebug ("XDestroyWindow (whole_window = {0:X})", hwnd.whole_window.ToInt32());
3591                                         Keyboard.DestroyICForWindow (hwnd.whole_window);
3592                                         XDestroyWindow(DisplayHandle, hwnd.whole_window);
3593                                 }
3594                                 else if (hwnd.client_window != IntPtr.Zero) {
3595                                         DriverDebug ("XDestroyWindow (client_window = {0:X})", hwnd.client_window.ToInt32());
3596                                         Keyboard.DestroyICForWindow (hwnd.client_window);
3597                                         XDestroyWindow(DisplayHandle, hwnd.client_window);
3598                                 }
3599
3600                         }
3601                 }
3602
3603                 internal override IntPtr DispatchMessage(ref MSG msg)
3604                 {
3605                         return NativeWindow.WndProc(msg.hwnd, msg.message, msg.wParam, msg.lParam);
3606                 }
3607
3608                 IntPtr GetReversibleScreenGC (Color backColor)
3609                 {
3610                         XGCValues       gc_values;
3611                         IntPtr          gc;
3612                         uint pixel;
3613
3614                         XColor xcolor = new XColor();
3615                         xcolor.red = (ushort)(backColor.R * 257);
3616                         xcolor.green = (ushort)(backColor.G * 257);
3617                         xcolor.blue = (ushort)(backColor.B * 257);
3618                         XAllocColor(DisplayHandle, DefaultColormap, ref xcolor);
3619                         pixel = (uint)xcolor.pixel.ToInt32();
3620
3621
3622                         gc_values = new XGCValues();
3623
3624                         gc_values.subwindow_mode = GCSubwindowMode.IncludeInferiors;
3625                         gc_values.foreground = (IntPtr)pixel;
3626
3627                         gc = XCreateGC(DisplayHandle, RootWindow, new IntPtr ((int) (GCFunction.GCSubwindowMode | GCFunction.GCForeground)), ref gc_values);
3628                         XSetForeground(DisplayHandle, gc, (UIntPtr)pixel);
3629                         XSetFunction(DisplayHandle,   gc, GXFunction.GXxor);
3630
3631                         return gc;
3632                 }
3633
3634                 IntPtr GetReversibleControlGC (Control control, int line_width)
3635                 {
3636                         XGCValues       gc_values;
3637                         IntPtr          gc;
3638
3639                         gc_values = new XGCValues();
3640
3641                         gc_values.subwindow_mode = GCSubwindowMode.IncludeInferiors;
3642                         gc_values.line_width = line_width;
3643                         gc_values.foreground = XBlackPixel(DisplayHandle, ScreenNo);
3644
3645                         // This logic will give us true rubber bands: (libsx, SANE_XOR)
3646                         //mask = foreground ^ background;
3647                         //XSetForeground(DisplayHandle, gc, 0xffffffff);
3648                         //XSetBackground(DisplayHandle, gc, background);
3649                         //XSetFunction(DisplayHandle,   gc, GXxor);
3650                         //XSetPlaneMask(DisplayHandle,  gc, mask);
3651
3652
3653                         gc = XCreateGC(DisplayHandle, control.Handle, new IntPtr ((int) (GCFunction.GCSubwindowMode | GCFunction.GCLineWidth | GCFunction.GCForeground)), ref gc_values);
3654                         uint foreground;
3655                         uint background;
3656
3657                         XColor xcolor = new XColor();
3658
3659                         xcolor.red = (ushort)(control.ForeColor.R * 257);
3660                         xcolor.green = (ushort)(control.ForeColor.G * 257);
3661                         xcolor.blue = (ushort)(control.ForeColor.B * 257);
3662                         XAllocColor(DisplayHandle, DefaultColormap, ref xcolor);
3663                         foreground = (uint)xcolor.pixel.ToInt32();
3664
3665                         xcolor.red = (ushort)(control.BackColor.R * 257);
3666                         xcolor.green = (ushort)(control.BackColor.G * 257);
3667                         xcolor.blue = (ushort)(control.BackColor.B * 257);
3668                         XAllocColor(DisplayHandle, DefaultColormap, ref xcolor);
3669                         background = (uint)xcolor.pixel.ToInt32();
3670
3671                         uint mask = foreground ^ background;
3672
3673                         XSetForeground(DisplayHandle, gc, (UIntPtr)0xffffffff);
3674                         XSetBackground(DisplayHandle, gc, (UIntPtr)background);
3675                         XSetFunction(DisplayHandle,   gc, GXFunction.GXxor);
3676                         XSetPlaneMask(DisplayHandle,  gc, (IntPtr)mask);
3677
3678                         return gc;
3679                 }
3680
3681                 internal override void DrawReversibleLine(Point start, Point end, Color backColor)
3682                 {
3683                         if (backColor.GetBrightness() < 0.5)
3684                                 backColor = Color.FromArgb(255 - backColor.R, 255 - backColor.G, 255 - backColor.B);
3685
3686                         IntPtr gc = GetReversibleScreenGC (backColor);
3687
3688                         XDrawLine (DisplayHandle, RootWindow, gc, start.X, start.Y, end.X, end.Y);
3689
3690                         XFreeGC(DisplayHandle, gc);
3691                 }
3692
3693                 internal override void DrawReversibleFrame (Rectangle rectangle, Color backColor, FrameStyle style)
3694                 {
3695                         if (backColor.GetBrightness() < 0.5)
3696                                 backColor = Color.FromArgb(255 - backColor.R, 255 - backColor.G, 255 - backColor.B);
3697
3698                         IntPtr gc = GetReversibleScreenGC (backColor);
3699
3700                         if (rectangle.Width < 0) {
3701                                 rectangle.X += rectangle.Width;
3702                                 rectangle.Width = -rectangle.Width;
3703                         }
3704                         if (rectangle.Height < 0) {
3705                                 rectangle.Y += rectangle.Height;
3706                                 rectangle.Height = -rectangle.Height;
3707                         }
3708
3709                         int line_width = 1;
3710                         GCLineStyle line_style = GCLineStyle.LineSolid;
3711                         GCCapStyle cap_style = GCCapStyle.CapButt;
3712                         GCJoinStyle join_style = GCJoinStyle.JoinMiter;
3713
3714                         switch (style) {
3715                         case FrameStyle.Dashed:
3716                                 line_style = GCLineStyle.LineOnOffDash;
3717                                 break;
3718                         case FrameStyle.Thick:
3719                                 line_width = 2;
3720                                 break;
3721                         }
3722
3723                         XSetLineAttributes (DisplayHandle, gc, line_width, line_style, cap_style, join_style);
3724
3725                         XDrawRectangle(DisplayHandle, RootWindow, gc, rectangle.Left, rectangle.Top, rectangle.Width, rectangle.Height);
3726
3727                         XFreeGC(DisplayHandle, gc);
3728                 }
3729
3730                 internal override void FillReversibleRectangle (Rectangle rectangle, Color backColor)
3731                 {
3732                         if (backColor.GetBrightness() < 0.5)
3733                                 backColor = Color.FromArgb(255 - backColor.R, 255 - backColor.G, 255 - backColor.B);
3734
3735                         IntPtr gc = GetReversibleScreenGC (backColor);
3736
3737                         if (rectangle.Width < 0) {
3738                                 rectangle.X += rectangle.Width;
3739                                 rectangle.Width = -rectangle.Width;
3740                         }
3741                         if (rectangle.Height < 0) {
3742                                 rectangle.Y += rectangle.Height;
3743                                 rectangle.Height = -rectangle.Height;
3744                         }
3745                         XFillRectangle(DisplayHandle, RootWindow, gc, rectangle.Left, rectangle.Top, rectangle.Width, rectangle.Height);
3746
3747                         XFreeGC(DisplayHandle, gc);
3748                 }
3749
3750                 internal override void DrawReversibleRectangle(IntPtr handle, Rectangle rect, int line_width)
3751                 {
3752                         IntPtr          gc;
3753                         Control control = Control.FromHandle(handle);
3754
3755                         gc = GetReversibleControlGC (control, line_width);
3756
3757                         if ((rect.Width > 0) && (rect.Height > 0)) {
3758                                 XDrawRectangle(DisplayHandle, control.Handle, gc, rect.Left, rect.Top, rect.Width, rect.Height);
3759                         } else {
3760                                 if (rect.Width > 0) {
3761                                         XDrawLine(DisplayHandle, control.Handle, gc, rect.X, rect.Y, rect.Right, rect.Y);
3762                                 } else {
3763                                         XDrawLine(DisplayHandle, control.Handle, gc, rect.X, rect.Y, rect.X, rect.Bottom);
3764                                 }
3765                         }
3766                         XFreeGC(DisplayHandle, gc);
3767                 }
3768
3769                 internal override void DoEvents()
3770                 {
3771                         DebugHelper.Enter ();
3772
3773                         MSG     msg = new MSG ();
3774                         XEventQueue queue;
3775
3776                         if (OverrideCursorHandle != IntPtr.Zero) {
3777                                 OverrideCursorHandle = IntPtr.Zero;
3778                         }
3779
3780                         queue = ThreadQueue(Thread.CurrentThread);
3781
3782                         queue.DispatchIdle = false;
3783                         in_doevents = true;
3784
3785                         while (PeekMessage(queue, ref msg, IntPtr.Zero, 0, 0, (uint)PeekMessageFlags.PM_REMOVE)) {
3786                                 Message m = Message.Create (msg.hwnd, (int)msg.message, msg.wParam, msg.lParam);
3787
3788                                 if (Application.FilterMessage (ref m))
3789                                         continue;
3790
3791                                 TranslateMessage (ref msg);
3792                                 DispatchMessage (ref msg);
3793
3794                                 string key = msg.hwnd + ":" + msg.message;
3795                                 if (messageHold[key] != null) {
3796                                         messageHold[key] = ((int)messageHold[key]) - 1;
3797                                         DebugHelper.WriteLine  ("Got " + msg + " for " + key);
3798                                 }
3799                         }
3800
3801                         in_doevents = false;
3802                         queue.DispatchIdle = true;
3803
3804                         DebugHelper.Leave ();
3805                 }
3806
3807                 internal override void EnableWindow(IntPtr handle, bool Enable)
3808                 {
3809                         Hwnd    hwnd;
3810
3811                         hwnd = Hwnd.ObjectFromHandle(handle);
3812                         if (hwnd != null) {
3813                                 hwnd.Enabled = Enable;
3814                         }
3815                 }
3816
3817                 internal override void EndLoop(Thread thread)
3818                 {
3819                         // This is where we one day will shut down the loop for the thread
3820                 }
3821
3822                 internal override IntPtr GetActive()
3823                 {
3824                         IntPtr  actual_atom;
3825                         int     actual_format;
3826                         IntPtr  nitems;
3827                         IntPtr  bytes_after;
3828                         IntPtr  prop = IntPtr.Zero;
3829                         IntPtr  active = IntPtr.Zero;
3830
3831                         XGetWindowProperty(DisplayHandle, RootWindow, _NET_ACTIVE_WINDOW, IntPtr.Zero, new IntPtr (1), false, (IntPtr)Atom.XA_WINDOW, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
3832                         if (((long)nitems > 0) && (prop != IntPtr.Zero)) {
3833                                 active = (IntPtr)Marshal.ReadInt32(prop);
3834                                 XFree(prop);
3835                         } else {
3836                                 // The window manager does not support _NET_ACTIVE_WINDOW.  Fall back to XGetInputFocus.
3837                                 IntPtr  revert_to = IntPtr.Zero;
3838                                 XGetInputFocus(DisplayHandle, out active, out revert_to);
3839                         }
3840
3841                         if (active != IntPtr.Zero) {
3842                                 Hwnd    hwnd;
3843
3844                                 hwnd = Hwnd.GetObjectFromWindow(active);
3845                                 if (hwnd != null) {
3846                                         active = hwnd.Handle;
3847                                 } else {
3848                                         active = IntPtr.Zero;
3849                                 }
3850                         }
3851                         return active;
3852                 }
3853
3854                 internal override Region GetClipRegion(IntPtr handle)
3855                 {
3856                         Hwnd    hwnd;
3857
3858                         hwnd = Hwnd.ObjectFromHandle(handle);
3859                         if (hwnd != null) {
3860                                 return hwnd.UserClip;
3861                         }
3862
3863                         return null;
3864                 }
3865
3866                 internal override void GetCursorInfo(IntPtr cursor, out int width, out int height, out int hotspot_x, out int hotspot_y)
3867                 {
3868                         width = 20;
3869                         height = 20;
3870                         hotspot_x = 0;
3871                         hotspot_y = 0;
3872                 }
3873
3874                 internal override void GetDisplaySize(out Size size)
3875                 {
3876                         XWindowAttributes       attributes=new XWindowAttributes();
3877
3878                         lock (XlibLock) {
3879                                 // FIXME - use _NET_WM messages instead?
3880                                 XGetWindowAttributes(DisplayHandle, XRootWindow(DisplayHandle, 0), ref attributes);
3881                         }
3882
3883                         size = new Size(attributes.width, attributes.height);
3884                 }
3885
3886                 internal override SizeF GetAutoScaleSize(Font font)
3887                 {
3888                         Graphics        g;
3889                         float           width;
3890                         string          magic_string = "The quick brown fox jumped over the lazy dog.";
3891                         double          magic_number = 44.549996948242189;
3892
3893                         g = Graphics.FromHwnd(FosterParent);
3894
3895                         width = (float) (g.MeasureString (magic_string, font).Width / magic_number);
3896                         return new SizeF(width, font.Height);
3897                 }
3898
3899                 internal override IntPtr GetParent(IntPtr handle)
3900                 {
3901                         Hwnd    hwnd;
3902
3903                         hwnd = Hwnd.ObjectFromHandle(handle);
3904                         if (hwnd != null && hwnd.parent != null) {
3905                                 return hwnd.parent.Handle;
3906                         }
3907                         return IntPtr.Zero;
3908                 }
3909
3910                 // This is a nop on win32 and x11
3911                 internal override IntPtr GetPreviousWindow(IntPtr handle)
3912                 {
3913                         return handle;
3914                 }
3915
3916                 internal override void GetCursorPos(IntPtr handle, out int x, out int y)
3917                 {
3918                         IntPtr  use_handle;
3919                         IntPtr  root;
3920                         IntPtr  child;
3921                         int     root_x;
3922                         int     root_y;
3923                         int     win_x;
3924                         int     win_y;
3925                         int     keys_buttons;
3926
3927                         if (handle != IntPtr.Zero) {
3928                                 use_handle = Hwnd.ObjectFromHandle(handle).client_window;
3929                         } else {
3930                                 use_handle = RootWindow;
3931                         }
3932
3933                         lock (XlibLock) {
3934                                 QueryPointer (DisplayHandle, use_handle, out root, out child, out root_x, out root_y, out win_x, out win_y, out keys_buttons);
3935                         }
3936
3937                         if (handle != IntPtr.Zero) {
3938                                 x = win_x;
3939                                 y = win_y;
3940                         } else {
3941                                 x = root_x;
3942                                 y = root_y;
3943                         }
3944                 }
3945
3946                 internal override IntPtr GetFocus()
3947                 {
3948                         return FocusWindow;
3949                 }
3950
3951
3952                 internal override bool GetFontMetrics(Graphics g, Font font, out int ascent, out int descent)
3953                 {
3954                         FontFamily ff = font.FontFamily;
3955                         ascent = ff.GetCellAscent (font.Style);
3956                         descent = ff.GetCellDescent (font.Style);
3957                         return true;
3958                 }
3959
3960                 internal override Point GetMenuOrigin(IntPtr handle)
3961                 {
3962                         Hwnd    hwnd;
3963
3964                         hwnd = Hwnd.ObjectFromHandle(handle);
3965
3966                         if (hwnd != null) {
3967                                 return hwnd.MenuOrigin;
3968                         }
3969                         return Point.Empty;
3970                 }
3971
3972                 [MonoTODO("Implement filtering")]
3973                 internal override bool GetMessage(Object queue_id, ref MSG msg, IntPtr handle, int wFilterMin, int wFilterMax)
3974                 {
3975                         XEvent  xevent;
3976                         bool    client;
3977                         Hwnd    hwnd;
3978
3979                         ProcessNextMessage:
3980
3981                         if (((XEventQueue)queue_id).Count > 0) {
3982                                 xevent = (XEvent) ((XEventQueue)queue_id).Dequeue ();
3983                         } else {
3984                                 UpdateMessageQueue ((XEventQueue)queue_id);
3985
3986                                 if (((XEventQueue)queue_id).Count > 0) {
3987                                         xevent = (XEvent) ((XEventQueue)queue_id).Dequeue ();
3988                                 } else if (((XEventQueue)queue_id).Paint.Count > 0) {
3989                                         xevent = ((XEventQueue)queue_id).Paint.Dequeue();
3990                                 } else {
3991                                         msg.hwnd= IntPtr.Zero;
3992                                         msg.message = Msg.WM_ENTERIDLE;
3993                                         return true;
3994                                 }
3995                         }
3996
3997                         hwnd = Hwnd.GetObjectFromWindow(xevent.AnyEvent.window);
3998
3999 #if DriverDebugDestroy
4000                         if (hwnd != null)
4001                                 if (hwnd.zombie)
4002                                         Console.WriteLine ( "GetMessage zombie, got Event: " + xevent.ToString () + " for 0x{0:x}", hwnd.Handle.ToInt32());
4003                                 else
4004                                         Console.WriteLine ( "GetMessage, got Event: " + xevent.ToString () + " for 0x{0:x}", hwnd.Handle.ToInt32());
4005 #endif
4006                         // Handle messages for windows that are already or are about to be destroyed.
4007
4008                         // we need a special block for this because unless we remove the hwnd from the paint
4009                         // queue it will always stay there (since we don't handle the expose), and we'll
4010                         // effectively loop infinitely trying to repaint a non-existant window.
4011                         if (hwnd != null && hwnd.zombie && xevent.type == XEventName.Expose) {
4012                                 hwnd.expose_pending = hwnd.nc_expose_pending = false;
4013                                 hwnd.Queue.Paint.Remove (hwnd);
4014                                 goto ProcessNextMessage;
4015                         }
4016
4017                         // We need to make sure we only allow DestroyNotify events through for zombie
4018                         // hwnds, since much of the event handling code makes requests using the hwnd's
4019                         // client_window, and that'll result in BadWindow errors if there's some lag
4020                         // between the XDestroyWindow call and the DestroyNotify event.
4021                         if (hwnd == null || hwnd.zombie && xevent.AnyEvent.type != XEventName.ClientMessage) {
4022                                 DriverDebug("GetMessage(): Got message {0} for non-existent or already destroyed window {1:X}", xevent.type, xevent.AnyEvent.window.ToInt32());
4023                                 goto ProcessNextMessage;
4024                         }
4025
4026
4027                         // If we get here, that means the window is no more but there are Client Messages
4028                         // to be processed, probably a Posted message (for instance, an WM_ACTIVATE message)
4029                         // We don't want anything else to run but the ClientMessage block, so reset all hwnd
4030                         // properties that might cause other processing to occur.
4031                         if (hwnd.zombie) {
4032                                 hwnd.resizing_or_moving = false;
4033                         }
4034
4035                         if (hwnd.client_window == xevent.AnyEvent.window) {
4036                                 client = true;
4037                                 //Console.WriteLine("Client message {1}, sending to window {0:X}", msg.hwnd.ToInt32(), xevent.type);
4038                         } else {
4039                                 client = false;
4040                                 //Console.WriteLine("Non-Client message, sending to window {0:X}", msg.hwnd.ToInt32());
4041                         }
4042
4043                         msg.hwnd = hwnd.Handle;
4044
4045                         // Windows sends WM_ENTERSIZEMOVE when a form resize/move operation starts and WM_EXITSIZEMOVE
4046                         // when it is done. The problem in X11 is that there is no concept of start-end of a moving/sizing.
4047                         // Configure events ("this window has resized/moved") are sent for each step of the resize. We send a
4048                         // WM_ENTERSIZEMOVE when we get the first Configure event. The problem is the WM_EXITSIZEMOVE.
4049                         //
4050                         //  - There is no way for us to know which is the last Configure event. We can't traverse the events
4051                         //    queue, because the next configure event might not be pending yet.
4052                         //  - We can't get ButtonPress/Release events for the window decorations, because they are not part
4053                         //    of the window(s) we manage.
4054                         //  - We can't rely on the mouse state to change to "up" before the last Configure event. It doesn't.
4055                         //
4056                         // We are almost 100% guaranteed to get another event (e.g Expose or other), but we can't know for sure
4057                         // which, so we have here to check if the mouse buttons state is "up" and send the WM_EXITSIZEMOVE
4058                         //
4059                         if (hwnd.resizing_or_moving) {
4060                                 int root_x, root_y, win_x, win_y, keys_buttons;
4061                                 IntPtr  root, child;
4062                                 XQueryPointer (DisplayHandle, hwnd.Handle, out root, out child, out root_x, out root_y,
4063                                                out win_x, out win_y, out keys_buttons);
4064                                 if ((keys_buttons & (int)MouseKeyMasks.Button1Mask) == 0 &&
4065                                     (keys_buttons & (int)MouseKeyMasks.Button2Mask) == 0 &&
4066                                     (keys_buttons & (int)MouseKeyMasks.Button3Mask) == 0) {
4067                                         hwnd.resizing_or_moving = false;
4068                                         SendMessage (hwnd.Handle, Msg.WM_EXITSIZEMOVE, IntPtr.Zero, IntPtr.Zero);
4069                                 }
4070                         }
4071
4072                         //
4073                         // If you add a new event to this switch make sure to add it in
4074                         // UpdateMessage also unless it is not coming through the X event system.
4075                         //
4076                         switch(xevent.type) {
4077                                 case XEventName.KeyPress: {
4078                                         Keyboard.KeyEvent (FocusWindow, xevent, ref msg);
4079
4080                                         // F1 key special case - WM_HELP sending
4081                                         if (msg.wParam == (IntPtr)VirtualKeys.VK_F1 || msg.wParam == (IntPtr)VirtualKeys.VK_HELP) {
4082                                                 // Send wM_HELP and then return it as a keypress message in
4083                                                 // case it needs to be preproccessed.
4084                                                 HELPINFO helpInfo = new HELPINFO ();
4085                                                 GetCursorPos (IntPtr.Zero, out helpInfo.MousePos.x, out helpInfo.MousePos.y);
4086                                                 IntPtr helpInfoPtr = Marshal.AllocHGlobal (Marshal.SizeOf (helpInfo));
4087                                                 Marshal.StructureToPtr (helpInfo, helpInfoPtr, true);
4088                                                 NativeWindow.WndProc (FocusWindow, Msg.WM_HELP, IntPtr.Zero, helpInfoPtr);
4089                                                 Marshal.FreeHGlobal (helpInfoPtr);
4090                                         }
4091                                         break;
4092                                 }
4093
4094                                 case XEventName.KeyRelease: {
4095                                         Keyboard.KeyEvent (FocusWindow, xevent, ref msg);
4096                                         break;
4097                                 }
4098
4099                                 case XEventName.ButtonPress: {
4100                                         switch(xevent.ButtonEvent.button) {
4101                                                 case 1: {
4102                                                         MouseState |= MouseButtons.Left;
4103                                                         if (client) {
4104                                                                 msg.message = Msg.WM_LBUTTONDOWN;
4105                                                                 msg.wParam = GetMousewParam (0);
4106                                                         } else {
4107                                                                 msg.message = Msg.WM_NCLBUTTONDOWN;
4108                                                                 msg.wParam = (IntPtr) NCHitTest (hwnd, xevent.MotionEvent.x, xevent.MotionEvent.y);
4109                                                                 MenuToScreen (xevent.AnyEvent.window, ref xevent.ButtonEvent.x, ref xevent.ButtonEvent.y);
4110                                                         }
4111                                                         break;
4112                                                 }
4113
4114                                                 case 2: {
4115                                                         MouseState |= MouseButtons.Middle;
4116                                                         if (client) {
4117                                                                 msg.message = Msg.WM_MBUTTONDOWN;
4118                                                                 msg.wParam = GetMousewParam (0);
4119                                                         } else {
4120                                                                 msg.message = Msg.WM_NCMBUTTONDOWN;
4121                                                                 msg.wParam = (IntPtr) NCHitTest (hwnd, xevent.MotionEvent.x, xevent.MotionEvent.y);
4122                                                                 MenuToScreen (xevent.AnyEvent.window, ref xevent.ButtonEvent.x, ref xevent.ButtonEvent.y);
4123                                                         }
4124                                                         break;
4125                                                 }
4126
4127                                                 case 3: {
4128                                                         MouseState |= MouseButtons.Right;
4129                                                         if (client) {
4130                                                                 msg.message = Msg.WM_RBUTTONDOWN;
4131                                                                 msg.wParam = GetMousewParam (0);
4132                                                         } else {
4133                                                                 msg.message = Msg.WM_NCRBUTTONDOWN;
4134                                                                 msg.wParam = (IntPtr) NCHitTest (hwnd, xevent.MotionEvent.x, xevent.MotionEvent.y);
4135                                                                 MenuToScreen (xevent.AnyEvent.window, ref xevent.ButtonEvent.x, ref xevent.ButtonEvent.y);
4136                                                         }
4137                                                         break;
4138                                                 }
4139
4140                                                 case 4: {
4141                                                         msg.hwnd = FocusWindow;
4142                                                         msg.message=Msg.WM_MOUSEWHEEL;
4143                                                         msg.wParam=GetMousewParam(120);
4144                                                         break;
4145                                                 }
4146
4147                                                 case 5: {
4148                                                         msg.hwnd = FocusWindow;
4149                                                         msg.message=Msg.WM_MOUSEWHEEL;
4150                                                         msg.wParam=GetMousewParam(-120);
4151                                                         break;
4152                                                 }
4153
4154                                         }
4155
4156                                         msg.lParam=(IntPtr) (xevent.ButtonEvent.y << 16 | xevent.ButtonEvent.x);
4157                                         mouse_position.X = xevent.ButtonEvent.x;
4158                                         mouse_position.Y = xevent.ButtonEvent.y;
4159
4160                                         if (!hwnd.Enabled) {
4161                                                 IntPtr dummy;
4162
4163                                                 msg.hwnd = hwnd.EnabledHwnd;
4164                                                 XTranslateCoordinates(DisplayHandle, xevent.AnyEvent.window, Hwnd.ObjectFromHandle(msg.hwnd).ClientWindow, xevent.ButtonEvent.x, xevent.ButtonEvent.y, out xevent.ButtonEvent.x, out xevent.ButtonEvent.y, out dummy);
4165                                                 msg.lParam = (IntPtr)(mouse_position.Y << 16 | mouse_position.X);
4166                                         }
4167
4168                                         if (Grab.Hwnd != IntPtr.Zero) {
4169                                                 msg.hwnd = Grab.Hwnd;
4170                                         }
4171
4172                                         if (ClickPending.Pending && ((((long)xevent.ButtonEvent.time - ClickPending.Time) < DoubleClickInterval) && (msg.wParam == ClickPending.wParam) && (msg.lParam == ClickPending.lParam) && (msg.message == ClickPending.Message))) {
4173                                                 // Looks like a genuine double click, clicked twice on the same spot with the same keys
4174                                                 switch(xevent.ButtonEvent.button) {
4175                                                         case 1: {
4176                                                                 msg.message = client ? Msg.WM_LBUTTONDBLCLK : Msg.WM_NCLBUTTONDBLCLK;
4177                                                                 break;
4178                                                         }
4179
4180                                                         case 2: {
4181                                                                 msg.message = client ? Msg.WM_MBUTTONDBLCLK : Msg.WM_NCMBUTTONDBLCLK;
4182                                                                 break;
4183                                                         }
4184
4185                                                         case 3: {
4186                                                                 msg.message = client ? Msg.WM_RBUTTONDBLCLK : Msg.WM_NCRBUTTONDBLCLK;
4187                                                                 break;
4188                                                         }
4189                                                 }
4190                                                 ClickPending.Pending = false;
4191                                         } else {
4192                                                 ClickPending.Pending = true;
4193                                                 ClickPending.Hwnd = msg.hwnd;
4194                                                 ClickPending.Message = msg.message;
4195                                                 ClickPending.wParam = msg.wParam;
4196                                                 ClickPending.lParam = msg.lParam;
4197                                                 ClickPending.Time = (long)xevent.ButtonEvent.time;
4198                                         }
4199
4200                                         if (msg.message == Msg.WM_LBUTTONDOWN || msg.message == Msg.WM_MBUTTONDOWN || msg.message == Msg.WM_RBUTTONDOWN) {
4201                                                 SendParentNotify(msg.hwnd, msg.message, mouse_position.X, mouse_position.Y);
4202                                         }
4203
4204                                         break;
4205                                 }
4206
4207                                 case XEventName.ButtonRelease: {
4208                                         switch(xevent.ButtonEvent.button) {
4209                                                 case 1: {
4210                                                         if (client) {
4211                                                                 msg.message = Msg.WM_LBUTTONUP;
4212                                                         } else {
4213                                                                 msg.message = Msg.WM_NCLBUTTONUP;
4214                                                                 msg.wParam = (IntPtr) NCHitTest (hwnd, xevent.MotionEvent.x, xevent.MotionEvent.y);
4215                                                                 MenuToScreen (xevent.AnyEvent.window, ref xevent.ButtonEvent.x, ref xevent.ButtonEvent.y);
4216                                                         }
4217                                                         MouseState &= ~MouseButtons.Left;
4218                                                         msg.wParam = GetMousewParam (0);
4219                                                         break;
4220                                                 }
4221
4222                                                 case 2: {
4223                                                         if (client) {
4224                                                                 msg.message = Msg.WM_MBUTTONUP;
4225                                                         } else {
4226                                                                 msg.message = Msg.WM_NCMBUTTONUP;
4227                                                                 msg.wParam = (IntPtr) NCHitTest (hwnd, xevent.MotionEvent.x, xevent.MotionEvent.y);
4228                                                                 MenuToScreen (xevent.AnyEvent.window, ref xevent.ButtonEvent.x, ref xevent.ButtonEvent.y);
4229                                                         }
4230                                                         MouseState &= ~MouseButtons.Middle;
4231                                                         msg.wParam = GetMousewParam (0);
4232                                                         break;
4233                                                 }
4234
4235                                                 case 3: {
4236                                                         if (client) {
4237                                                                 msg.message = Msg.WM_RBUTTONUP;
4238                                                         } else {
4239                                                                 msg.message = Msg.WM_NCRBUTTONUP;
4240                                                                 msg.wParam = (IntPtr) NCHitTest (hwnd, xevent.MotionEvent.x, xevent.MotionEvent.y);
4241                                                                 MenuToScreen (xevent.AnyEvent.window, ref xevent.ButtonEvent.x, ref xevent.ButtonEvent.y);
4242                                                         }
4243                                                         MouseState &= ~MouseButtons.Right;
4244                                                         msg.wParam = GetMousewParam (0);
4245                                                         break;
4246                                                 }
4247
4248                                                 case 4: {
4249                                                         goto ProcessNextMessage;
4250                                                 }
4251
4252                                                 case 5: {
4253                                                         goto ProcessNextMessage;
4254                                                 }
4255                                         }
4256
4257                                         if (!hwnd.Enabled) {
4258                                                 IntPtr dummy;
4259
4260                                                 msg.hwnd = hwnd.EnabledHwnd;
4261                                                 XTranslateCoordinates(DisplayHandle, xevent.AnyEvent.window, Hwnd.ObjectFromHandle(msg.hwnd).ClientWindow, xevent.ButtonEvent.x, xevent.ButtonEvent.y, out xevent.ButtonEvent.x, out xevent.ButtonEvent.y, out dummy);
4262                                                 msg.lParam = (IntPtr)(mouse_position.Y << 16 | mouse_position.X);
4263                                         }
4264
4265                                         if (Grab.Hwnd != IntPtr.Zero) {
4266                                                 msg.hwnd = Grab.Hwnd;
4267                                         }
4268
4269                                         msg.lParam=(IntPtr) (xevent.ButtonEvent.y << 16 | xevent.ButtonEvent.x);
4270                                         mouse_position.X = xevent.ButtonEvent.x;
4271                                         mouse_position.Y = xevent.ButtonEvent.y;
4272
4273                                         // Win32 splurts MouseMove events all over the place, regardless of whether the mouse is actually moving or
4274                                         // not, especially after mousedown and mouseup. To support apps relying on mousemove events between and after
4275                                         // mouse clicks to repaint or whatever, we generate a mousemove event here. *sigh*
4276                                         if (msg.message == Msg.WM_LBUTTONUP || msg.message == Msg.WM_MBUTTONUP || msg.message == Msg.WM_RBUTTONUP) {
4277                                                 XEvent motionEvent = new XEvent ();
4278                                                 motionEvent.type = XEventName.MotionNotify;
4279                                                 motionEvent.MotionEvent.display = DisplayHandle;
4280                                                 motionEvent.MotionEvent.window = xevent.ButtonEvent.window;
4281                                                 motionEvent.MotionEvent.x = xevent.ButtonEvent.x;
4282                                                 motionEvent.MotionEvent.y = xevent.ButtonEvent.y;
4283                                                 hwnd.Queue.EnqueueLocked (motionEvent);
4284                                         }
4285                                         break;
4286                                 }
4287
4288                                 case XEventName.MotionNotify: {
4289                                         if (client) {
4290                                                 DriverDebug("GetMessage(): Window {0:X} MotionNotify x={1} y={2}",
4291                                                             client ? hwnd.client_window.ToInt32() : hwnd.whole_window.ToInt32(),
4292                                                             xevent.MotionEvent.x, xevent.MotionEvent.y);
4293
4294                                                 if (Grab.Hwnd != IntPtr.Zero) {
4295                                                         msg.hwnd = Grab.Hwnd;
4296                                                 } else {
4297                                                         if (hwnd.Enabled) {
4298                                                                 NativeWindow.WndProc(msg.hwnd, Msg.WM_SETCURSOR, msg.hwnd, (IntPtr)HitTest.HTCLIENT);
4299                                                         }
4300                                                 }
4301
4302                                                 if (xevent.MotionEvent.is_hint != 0)
4303                                                 {
4304                                                         IntPtr root, child;
4305                                                         int mask;
4306                                                         XQueryPointer (DisplayHandle, xevent.AnyEvent.window,
4307                                                                                         out root, out child,
4308                                                                                         out xevent.MotionEvent.x_root,
4309                                                                                         out xevent.MotionEvent.y_root,
4310                                                                                         out xevent.MotionEvent.x,
4311                                                                                         out xevent.MotionEvent.y, out mask);
4312                                                 }
4313
4314                                                 msg.message = Msg.WM_MOUSEMOVE;
4315                                                 msg.wParam = GetMousewParam(0);
4316                                                 msg.lParam = (IntPtr) (xevent.MotionEvent.y << 16 | xevent.MotionEvent.x & 0xFFFF);
4317
4318                                                 if (!hwnd.Enabled) {
4319                                                         IntPtr dummy;
4320
4321                                                         msg.hwnd = hwnd.EnabledHwnd;
4322                                                         XTranslateCoordinates(DisplayHandle, xevent.AnyEvent.window, Hwnd.ObjectFromHandle(msg.hwnd).ClientWindow, xevent.MotionEvent.x, xevent.MotionEvent.y, out xevent.MotionEvent.x, out xevent.MotionEvent.y, out dummy);
4323                                                         msg.lParam = (IntPtr)(mouse_position.Y << 16 | mouse_position.X);
4324                                                 }
4325
4326                                                 mouse_position.X = xevent.MotionEvent.x;
4327                                                 mouse_position.Y = xevent.MotionEvent.y;
4328
4329                                                 if ((HoverState.Timer.Enabled) &&
4330                                                     (((mouse_position.X + HoverState.Size.Width) < HoverState.X) ||
4331                                                     ((mouse_position.X - HoverState.Size.Width) > HoverState.X) ||
4332                                                     ((mouse_position.Y + HoverState.Size.Height) < HoverState.Y) ||
4333                                                     ((mouse_position.Y - HoverState.Size.Height) > HoverState.Y))) {
4334                                                         HoverState.Timer.Stop();
4335                                                         HoverState.Timer.Start();
4336                                                         HoverState.X = mouse_position.X;
4337                                                         HoverState.Y = mouse_position.Y;
4338                                                 }
4339
4340                                                 break;
4341                                         } else {
4342                                                 HitTest ht;
4343                                                 IntPtr dummy;
4344
4345                                                 DriverDebug("GetMessage(): non-client area {0:X} MotionNotify x={1} y={2}",
4346                                                             client ? hwnd.client_window.ToInt32() : hwnd.whole_window.ToInt32(),
4347                                                             xevent.MotionEvent.x, xevent.MotionEvent.y);
4348                                                 msg.message = Msg.WM_NCMOUSEMOVE;
4349
4350                                                 if (!hwnd.Enabled) {
4351                                                         msg.hwnd = hwnd.EnabledHwnd;
4352                                                         XTranslateCoordinates(DisplayHandle, xevent.AnyEvent.window, Hwnd.ObjectFromHandle(msg.hwnd).ClientWindow, xevent.MotionEvent.x, xevent.MotionEvent.y, out xevent.MotionEvent.x, out xevent.MotionEvent.y, out dummy);
4353                                                         msg.lParam = (IntPtr)(mouse_position.Y << 16 | mouse_position.X);
4354                                                 }
4355
4356                                                 ht = NCHitTest (hwnd, xevent.MotionEvent.x, xevent.MotionEvent.y);
4357                                                 NativeWindow.WndProc(hwnd.client_window, Msg.WM_SETCURSOR, msg.hwnd, (IntPtr)ht);
4358
4359                                                 mouse_position.X = xevent.MotionEvent.x;
4360                                                 mouse_position.Y = xevent.MotionEvent.y;
4361                                         }
4362
4363                                         break;
4364                                 }
4365
4366                                 case XEventName.EnterNotify: {
4367                                         if (!hwnd.Enabled) {
4368                                                 goto ProcessNextMessage;
4369                                         }
4370                                         if (xevent.CrossingEvent.mode == NotifyMode.NotifyGrab || xevent.AnyEvent.window != hwnd.client_window) {
4371                                                 goto ProcessNextMessage;
4372                                         }
4373                                         if (xevent.CrossingEvent.mode == NotifyMode.NotifyUngrab) { // Pseudo motion caused by grabbing
4374                                                 if (LastPointerWindow == xevent.AnyEvent.window)
4375                                                         goto ProcessNextMessage;
4376
4377                                                 if (LastPointerWindow != IntPtr.Zero) {
4378                                                         Point enter_loc = new Point (xevent.ButtonEvent.x, xevent.ButtonEvent.y);
4379
4380                                                         // We need this due to EnterNotify being fired on all the parent controls
4381                                                         // of the Control being grabbed, and obviously in that scenario we are not
4382                                                         // actuallty entering them
4383                                                         Control ctrl = Control.FromHandle (hwnd.client_window);
4384                                                         foreach (Control child_control in ctrl.Controls.GetAllControls ())
4385                                                                 if (child_control.Bounds.Contains (enter_loc))
4386                                                                         goto ProcessNextMessage;
4387
4388                                                         // A MouseLeave/LeaveNotify event is sent to the previous window
4389                                                         // until the mouse is ungrabbed, not when actually leaving its bounds
4390                                                         int x = xevent.CrossingEvent.x_root;
4391                                                         int y = xevent.CrossingEvent.y_root;
4392                                                         ScreenToClient (LastPointerWindow, ref x, ref y);
4393
4394                                                         XEvent leaveEvent = new XEvent ();
4395                                                         leaveEvent.type = XEventName.LeaveNotify;
4396                                                         leaveEvent.CrossingEvent.display = DisplayHandle;
4397                                                         leaveEvent.CrossingEvent.window = LastPointerWindow;
4398                                                         leaveEvent.CrossingEvent.x = x;
4399                                                         leaveEvent.CrossingEvent.y = y;
4400                                                         leaveEvent.CrossingEvent.mode = NotifyMode.NotifyNormal;
4401                                                         Hwnd last_pointer_hwnd = Hwnd.ObjectFromHandle (LastPointerWindow);
4402                                                         last_pointer_hwnd.Queue.EnqueueLocked (leaveEvent);
4403                                                 }
4404                                         }
4405
4406                                         LastPointerWindow = xevent.AnyEvent.window;
4407
4408                                         msg.message = Msg.WM_MOUSE_ENTER;
4409                                         HoverState.X = xevent.CrossingEvent.x;
4410                                         HoverState.Y = xevent.CrossingEvent.y;
4411                                         HoverState.Timer.Enabled = true;
4412                                         HoverState.Window = xevent.CrossingEvent.window;
4413
4414                                         // Win32 sends a WM_MOUSEMOVE after mouse enter
4415                                         XEvent motionEvent = new XEvent ();
4416                                         motionEvent.type = XEventName.MotionNotify;
4417                                         motionEvent.MotionEvent.display = DisplayHandle;
4418                                         motionEvent.MotionEvent.window = xevent.ButtonEvent.window;
4419                                         motionEvent.MotionEvent.x = xevent.ButtonEvent.x;
4420                                         motionEvent.MotionEvent.y = xevent.ButtonEvent.y;
4421                                         hwnd.Queue.EnqueueLocked (motionEvent);
4422                                         break;
4423                                 }
4424
4425                                 case XEventName.LeaveNotify: {
4426                                         if (xevent.CrossingEvent.mode == NotifyMode.NotifyUngrab) {
4427                                                 WindowUngrabbed (hwnd.Handle);
4428                                                 goto ProcessNextMessage;
4429                                         }
4430                                         if (!hwnd.Enabled) {
4431                                                 goto ProcessNextMessage;
4432                                         }
4433                                         if ((xevent.CrossingEvent.mode != NotifyMode.NotifyNormal) || (xevent.CrossingEvent.window != hwnd.client_window)) {
4434                                                 goto ProcessNextMessage;
4435                                         }
4436                                         // If a grab is taking place, ignore it - we handle it in EnterNotify
4437                                         if (Grab.Hwnd != IntPtr.Zero)
4438                                                 goto ProcessNextMessage;
4439
4440                                         // Reset the cursor explicitly on X11.
4441                                         // X11 remembers the last set cursor for the window and in cases where
4442                                         // the control won't get a WM_SETCURSOR X11 will restore the last
4443                                         // known cursor, which we don't want.
4444                                         //
4445                                         SetCursor (hwnd.client_window, IntPtr.Zero);
4446
4447                                         msg.message=Msg.WM_MOUSELEAVE;
4448                                         HoverState.Timer.Enabled = false;
4449                                         HoverState.Window = IntPtr.Zero;
4450                                         break;
4451                                 }
4452
4453                                 #if later
4454                                 case XEventName.CreateNotify: {
4455                                         if (client && (xevent.ConfigureEvent.xevent == xevent.ConfigureEvent.window)) {
4456                                                 msg.message = WM_CREATE;
4457                                                 // Set up CreateStruct
4458                                         } else {
4459                                                 goto ProcessNextMessage;
4460                                         }
4461                                         break;
4462                                 }
4463                                 #endif
4464
4465
4466                                 case XEventName.ReparentNotify: {
4467                                         if (hwnd.parent == null) {      // Toplevel
4468                                                 if ((xevent.ReparentEvent.parent != IntPtr.Zero) && (xevent.ReparentEvent.window == hwnd.whole_window)) {
4469                                                         hwnd.Reparented = true;
4470
4471                                                         // The location given by the event is not reliable between different wm's,
4472                                                         // so use an alternative way of getting it.
4473                                                         Point location = GetTopLevelWindowLocation (hwnd);
4474                                                         hwnd.X = location.X;
4475                                                         hwnd.Y = location.Y;
4476
4477                                                         if (hwnd.opacity != 0xffffffff) {
4478                                                                 IntPtr opacity;
4479
4480                                                                 opacity = (IntPtr)(Int32)hwnd.opacity;
4481                                                                 XChangeProperty(DisplayHandle, XGetParent(hwnd.whole_window), _NET_WM_WINDOW_OPACITY, (IntPtr)Atom.XA_CARDINAL, 32, PropertyMode.Replace, ref opacity, 1);
4482                                                         }
4483                                                         SendMessage(msg.hwnd, Msg.WM_WINDOWPOSCHANGED, msg.wParam, msg.lParam);
4484                                                         goto ProcessNextMessage;
4485                                                 } else {
4486                                                         hwnd.Reparented = false;
4487                                                         goto ProcessNextMessage;
4488                                                 }
4489                                         }
4490                                         goto ProcessNextMessage;
4491                                 }
4492
4493                                 case XEventName.ConfigureNotify: {
4494                                         if (!client && (xevent.ConfigureEvent.xevent == xevent.ConfigureEvent.window)) {        // Ignore events for children (SubstructureNotify) and client areas
4495                                                 DriverDebug("GetMessage(): Window {0:X} ConfigureNotify x={1} y={2} width={3} height={4}",
4496                                                             hwnd.client_window.ToInt32(), xevent.ConfigureEvent.x,
4497                                                             xevent.ConfigureEvent.y, xevent.ConfigureEvent.width, xevent.ConfigureEvent.height);
4498
4499                                                 lock (hwnd.configure_lock) {
4500                                                         Form form = Control.FromHandle (hwnd.client_window) as Form;
4501                                                         if (form != null && !hwnd.resizing_or_moving) {
4502                                                                 if (hwnd.x != form.Bounds.X || hwnd.y != form.Bounds.Y) {
4503                                                                         SendMessage (form.Handle, Msg.WM_SYSCOMMAND, (IntPtr)SystemCommands.SC_MOVE, IntPtr.Zero);
4504                                                                         hwnd.resizing_or_moving = true;
4505                                                                 } else if (hwnd.width != form.Bounds.Width || hwnd.height != form.Bounds.Height) {
4506                                                                         SendMessage (form.Handle, Msg.WM_SYSCOMMAND, (IntPtr)SystemCommands.SC_SIZE, IntPtr.Zero);
4507                                                                         hwnd.resizing_or_moving = true;
4508                                                                 }
4509                                                                 if (hwnd.resizing_or_moving)
4510                                                                         SendMessage (form.Handle, Msg.WM_ENTERSIZEMOVE, IntPtr.Zero, IntPtr.Zero);
4511                                                         }
4512
4513                                                         SendMessage(msg.hwnd, Msg.WM_WINDOWPOSCHANGED, IntPtr.Zero, IntPtr.Zero);
4514                                                         hwnd.configure_pending = false;
4515
4516                                                         // We need to adjust our client window to track the resize of whole_window
4517                                                         if (hwnd.whole_window != hwnd.client_window)
4518                                                                 PerformNCCalc(hwnd);
4519                                                 }
4520                                         }
4521                                         goto ProcessNextMessage;
4522                                 }
4523
4524                                 case XEventName.FocusIn: {
4525                                         // We received focus. We use X11 focus only to know if the app window does or does not have focus
4526                                         // We do not track the actual focussed window via it. Instead, this is done via FocusWindow internally
4527                                         // Receiving focus means we've gotten activated and therefore we need to let the actual FocusWindow know
4528                                         // about it having focus again
4529                                         if (xevent.FocusChangeEvent.detail != NotifyDetail.NotifyNonlinear) {
4530                                                 goto ProcessNextMessage;
4531                                         }
4532
4533
4534                                         if (FocusWindow == IntPtr.Zero) {
4535                                                 Control c = Control.FromHandle (hwnd.client_window);
4536
4537                                                 if (c == null)
4538                                                         goto ProcessNextMessage;
4539                                                 Form form = c.FindForm ();
4540                                                 if (form == null)
4541                                                         goto ProcessNextMessage;
4542
4543                                                 if (ActiveWindow != form.Handle) {
4544                                                         ActiveWindow = form.Handle;
4545                                                         SendMessage (ActiveWindow, Msg.WM_ACTIVATE, (IntPtr) WindowActiveFlags.WA_ACTIVE, IntPtr.Zero);
4546                                                 }
4547                                                 goto ProcessNextMessage;
4548                                         }
4549                                         Keyboard.FocusIn (FocusWindow);
4550                                         SendMessage(FocusWindow, Msg.WM_SETFOCUS, IntPtr.Zero, IntPtr.Zero);
4551                                         goto ProcessNextMessage;
4552                                 }
4553
4554                                 case XEventName.FocusOut: {
4555                                         // Se the comment for our FocusIn handler
4556                                         if (xevent.FocusChangeEvent.detail != NotifyDetail.NotifyNonlinear) {
4557                                                 goto ProcessNextMessage;
4558                                         }
4559
4560                                         while (Keyboard.ResetKeyState(FocusWindow, ref msg)) {
4561                                                 SendMessage(FocusWindow, msg.message, msg.wParam, msg.lParam);
4562                                         }
4563
4564                                         Keyboard.FocusOut(hwnd.client_window);
4565                                         SendMessage(FocusWindow, Msg.WM_KILLFOCUS, IntPtr.Zero, IntPtr.Zero);
4566                                         goto ProcessNextMessage;
4567                                 }
4568
4569                                 // We are already firing WM_SHOWWINDOW messages in the proper places, but I'm leaving this code
4570                                 // in case we break a scenario not taken into account in the tests
4571                                 case XEventName.MapNotify: {
4572                                         /*if (client && (xevent.ConfigureEvent.xevent == xevent.ConfigureEvent.window)) {       // Ignore events for children (SubstructureNotify) and client areas
4573                                                 hwnd.mapped = true;
4574                                                 msg.message = Msg.WM_SHOWWINDOW;
4575                                                 msg.wParam = (IntPtr) 1;
4576                                                 // XXX we're missing the lParam..
4577                                                 break;
4578                                         }*/
4579                                         goto ProcessNextMessage;
4580                                 }
4581
4582                                 case XEventName.UnmapNotify: {
4583                                         /*if (client && (xevent.ConfigureEvent.xevent == xevent.ConfigureEvent.window)) {       // Ignore events for children (SubstructureNotify) and client areas
4584                                                 hwnd.mapped = false;
4585                                                 msg.message = Msg.WM_SHOWWINDOW;
4586                                                 msg.wParam = (IntPtr) 0;
4587                                                 // XXX we're missing the lParam..
4588                                                 break;
4589                                         }*/
4590                                         goto ProcessNextMessage;
4591                                 }
4592
4593                                 case XEventName.Expose: {
4594                                         if (!hwnd.Mapped) {
4595                                                 if (client) {
4596                                                         hwnd.expose_pending = false;
4597                                                 } else {
4598                                                         hwnd.nc_expose_pending = false;
4599                                                 }
4600                                                 goto ProcessNextMessage;
4601                                         }
4602
4603                                         if (client) {
4604                                                 if (!hwnd.expose_pending) {
4605                                                         goto ProcessNextMessage;
4606                                                 }
4607                                         } else {
4608                                                 if (!hwnd.nc_expose_pending) {
4609                                                         goto ProcessNextMessage;
4610                                                 }
4611
4612                                                 switch (hwnd.border_style) {
4613                                                         case FormBorderStyle.Fixed3D: {
4614                                                                 Graphics g;
4615
4616                                                                 g = Graphics.FromHwnd(hwnd.whole_window);
4617                                                                 if (hwnd.border_static)
4618                                                                         ControlPaint.DrawBorder3D(g, new Rectangle(0, 0, hwnd.Width, hwnd.Height), Border3DStyle.SunkenOuter);
4619                                                                 else
4620                                                                         ControlPaint.DrawBorder3D(g, new Rectangle(0, 0, hwnd.Width, hwnd.Height), Border3DStyle.Sunken);
4621                                                                 g.Dispose();
4622                                                                 break;
4623                                                         }
4624
4625                                                         case FormBorderStyle.FixedSingle: {
4626                                                                 Graphics g;
4627
4628                                                                 g = Graphics.FromHwnd(hwnd.whole_window);
4629                                                                 ControlPaint.DrawBorder(g, new Rectangle(0, 0, hwnd.Width, hwnd.Height), Color.Black, ButtonBorderStyle.Solid);
4630                                                                 g.Dispose();
4631                                                                 break;
4632                                                         }
4633                                                 }
4634                                                 DriverDebug("GetMessage(): Window {0:X} Exposed non-client area {1},{2} {3}x{4}",
4635                                                             hwnd.client_window.ToInt32(), xevent.ExposeEvent.x, xevent.ExposeEvent.y,
4636                                                             xevent.ExposeEvent.width, xevent.ExposeEvent.height);
4637
4638                                                 Rectangle rect = new Rectangle (xevent.ExposeEvent.x, xevent.ExposeEvent.y, xevent.ExposeEvent.width, xevent.ExposeEvent.height);
4639                                                 Region region = new Region (rect);
4640                                                 IntPtr hrgn = region.GetHrgn (null); // Graphics object isn't needed
4641                                                 msg.message = Msg.WM_NCPAINT;
4642                                                 msg.wParam = hrgn == IntPtr.Zero ? (IntPtr)1 : hrgn;
4643                                                 msg.refobject = region;
4644                                                 break;
4645                                         }
4646                                         DriverDebug("GetMessage(): Window {0:X} Exposed area {1},{2} {3}x{4}",
4647                                                     hwnd.client_window.ToInt32(), xevent.ExposeEvent.x, xevent.ExposeEvent.y,
4648                                                     xevent.ExposeEvent.width, xevent.ExposeEvent.height);
4649                                         if (Caret.Visible == true) {
4650                                                 Caret.Paused = true;
4651                                                 HideCaret();
4652                                         }
4653
4654                                         if (Caret.Visible == true) {
4655                                                 ShowCaret();
4656                                                 Caret.Paused = false;
4657                                         }
4658                                         msg.message = Msg.WM_PAINT;
4659                                         break;
4660                                 }
4661
4662                                 case XEventName.DestroyNotify: {
4663
4664                                         // This is a bit tricky, we don't receive our own DestroyNotify, we only get those for our children
4665                                         hwnd = Hwnd.ObjectFromHandle(xevent.DestroyWindowEvent.window);
4666
4667                                         // We may get multiple for the same window, act only one the first (when Hwnd still knows about it)
4668                                         if ((hwnd != null) && (hwnd.client_window == xevent.DestroyWindowEvent.window)) {
4669                                                 CleanupCachedWindows (hwnd);
4670
4671                                                 DriverDebug("Received X11 Destroy Notification for {0}", XplatUI.Window(hwnd.client_window));
4672
4673                                                 msg.hwnd = hwnd.client_window;
4674                                                 msg.message=Msg.WM_DESTROY;
4675                                                 hwnd.Dispose();
4676                                         } else {
4677                                                 goto ProcessNextMessage;
4678                                         }
4679
4680                                         break;
4681                                 }
4682
4683                                 case XEventName.ClientMessage: {
4684                                         if (Dnd.HandleClientMessage (ref xevent)) {
4685                                                 goto ProcessNextMessage;
4686                                         }
4687
4688                                         if (xevent.ClientMessageEvent.message_type == AsyncAtom) {
4689                                                 XplatUIDriverSupport.ExecuteClientMessage((GCHandle)xevent.ClientMessageEvent.ptr1);
4690                                                 goto ProcessNextMessage;
4691                                         }
4692
4693                                         if (xevent.ClientMessageEvent.message_type == HoverState.Atom) {
4694                                                 msg.message = Msg.WM_MOUSEHOVER;
4695                                                 msg.wParam = GetMousewParam(0);
4696                                                 msg.lParam = (IntPtr) (xevent.ClientMessageEvent.ptr1);
4697                                                 return true;
4698                                         }
4699
4700                                         if (xevent.ClientMessageEvent.message_type == (IntPtr)PostAtom) {
4701                                                 DebugHelper.Indent ();
4702                                                 DebugHelper.WriteLine (String.Format ("Posted message:" + (Msg) xevent.ClientMessageEvent.ptr2.ToInt32 () + " for 0x{0:x}", xevent.ClientMessageEvent.ptr1.ToInt32 ()));
4703                                                 DebugHelper.Unindent ();
4704                                                 msg.hwnd = xevent.ClientMessageEvent.ptr1;
4705                                                 msg.message = (Msg) xevent.ClientMessageEvent.ptr2.ToInt32 ();
4706                                                 msg.wParam = xevent.ClientMessageEvent.ptr3;
4707                                                 msg.lParam = xevent.ClientMessageEvent.ptr4;
4708                                                 if (msg.message == (Msg)Msg.WM_QUIT)
4709                                                         return false;
4710                                                 else
4711                                                         return true;
4712                                         }
4713
4714                                         if  (xevent.ClientMessageEvent.message_type == _XEMBED) {
4715 #if DriverDebugXEmbed
4716                                                 Console.WriteLine("GOT EMBED MESSAGE {0:X}, detail {1:X}", xevent.ClientMessageEvent.ptr2.ToInt32(), xevent.ClientMessageEvent.ptr3.ToInt32());
4717 #endif
4718
4719                                                 if (xevent.ClientMessageEvent.ptr2.ToInt32() == (int)XEmbedMessage.EmbeddedNotify) {
4720                                                         XSizeHints hints = new XSizeHints();
4721                                                         IntPtr dummy;
4722
4723                                                         XGetWMNormalHints(DisplayHandle, hwnd.whole_window, ref hints, out dummy);
4724
4725                                                         hwnd.width = hints.max_width;
4726                                                         hwnd.height = hints.max_height;
4727                                                         hwnd.ClientRect = Rectangle.Empty;
4728                                                         SendMessage(msg.hwnd, Msg.WM_WINDOWPOSCHANGED, IntPtr.Zero, IntPtr.Zero);
4729                                                 }
4730                                         }
4731
4732                                         if  (xevent.ClientMessageEvent.message_type == WM_PROTOCOLS) {
4733                                                 if (xevent.ClientMessageEvent.ptr1 == WM_DELETE_WINDOW) {
4734                                                         SendMessage (msg.hwnd, Msg.WM_SYSCOMMAND, (IntPtr)SystemCommands.SC_CLOSE, IntPtr.Zero);
4735                                                         msg.message = Msg.WM_CLOSE;
4736                                                         return true;
4737                                                 }
4738
4739                                                 // We should not get this, but I'll leave the code in case we need it in the future
4740                                                 if (xevent.ClientMessageEvent.ptr1 == WM_TAKE_FOCUS) {
4741                                                         goto ProcessNextMessage;
4742                                                 }
4743                                         }
4744                                         goto ProcessNextMessage;
4745                                 }
4746
4747                                 default: {
4748                                         goto ProcessNextMessage;
4749                                 }
4750                         }
4751
4752                         return true;
4753                 }
4754
4755                 HitTest NCHitTest (Hwnd hwnd, int x, int y)
4756                 {
4757                         // The hit test is sent in screen coordinates
4758                         IntPtr dummy;
4759                         int screen_x, screen_y;
4760                         XTranslateCoordinates (DisplayHandle, hwnd.WholeWindow, RootWindow, x, y, out screen_x, out screen_y, out dummy);
4761                         return (HitTest) NativeWindow.WndProc (hwnd.client_window, Msg.WM_NCHITTEST, IntPtr.Zero,
4762                                                                (IntPtr) (screen_y << 16 | screen_x & 0xFFFF));
4763                 }
4764
4765                 // Our very basic implementation of MoveResize - we can extend it later
4766                 // *if* needed
4767                 internal override void BeginMoveResize (IntPtr handle)
4768                 {
4769                         // We *need* to ungrab the pointer in the current display
4770                         XplatUI.UngrabWindow (Grab.Hwnd);
4771
4772                         int x_root, y_root;
4773                         GetCursorPos (IntPtr.Zero, out x_root, out y_root);
4774
4775                         Hwnd hwnd = Hwnd.ObjectFromHandle (handle);
4776                         SendNetWMMessage (hwnd.whole_window, _NET_WM_MOVERESIZE, (IntPtr) x_root, (IntPtr) y_root,
4777                                         (IntPtr) NetWmMoveResize._NET_WM_MOVERESIZE_SIZE_BOTTOMRIGHT,
4778                                         (IntPtr) 1); // left button
4779                 }
4780
4781                 internal override bool GetText(IntPtr handle, out string text)
4782                 {
4783
4784                         lock (XlibLock) {
4785                                 IntPtr actual_atom;
4786                                 int actual_format;
4787                                 IntPtr nitems;
4788                                 IntPtr bytes_after;
4789                                 IntPtr prop = IntPtr.Zero;
4790
4791                                 XGetWindowProperty(DisplayHandle, handle,
4792                                                    _NET_WM_NAME, IntPtr.Zero, new IntPtr (1), false,
4793                                                    UTF8_STRING, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
4794
4795                                 if ((long)nitems > 0 && prop != IntPtr.Zero) {
4796                                         text = Marshal.PtrToStringUni (prop, (int)nitems);
4797                                         XFree (prop);
4798                                         return true;
4799                                 }
4800                                 else {
4801                                         // fallback on the non-_NET property
4802                                         IntPtr  textptr;
4803
4804                                         textptr = IntPtr.Zero;
4805
4806                                         XFetchName(DisplayHandle, Hwnd.ObjectFromHandle(handle).whole_window, ref textptr);
4807                                         if (textptr != IntPtr.Zero) {
4808                                                 text = Marshal.PtrToStringAnsi(textptr);
4809                                                 XFree(textptr);
4810                                                 return true;
4811                                         } else {
4812                                                 text = "";
4813                                                 return false;
4814                                         }
4815                                 }
4816                         }
4817                 }
4818
4819                 internal override void GetWindowPos(IntPtr handle, bool is_toplevel, out int x, out int y, out int width, out int height, out int client_width, out int client_height)
4820                 {
4821                         Hwnd            hwnd;
4822
4823                         hwnd = Hwnd.ObjectFromHandle(handle);
4824
4825                         if (hwnd != null) {
4826                                 x = hwnd.x;
4827                                 y = hwnd.y;
4828                                 width = hwnd.width;
4829                                 height = hwnd.height;
4830
4831                                 PerformNCCalc(hwnd);
4832
4833                                 client_width = hwnd.ClientRect.Width;
4834                                 client_height = hwnd.ClientRect.Height;
4835
4836                                 return;
4837                         }
4838
4839                         // Should we throw an exception or fail silently?
4840                         // throw new ArgumentException("Called with an invalid window handle", "handle");
4841
4842                         x = 0;
4843                         y = 0;
4844                         width = 0;
4845                         height = 0;
4846                         client_width = 0;
4847                         client_height = 0;
4848                 }
4849
4850                 internal override FormWindowState GetWindowState(IntPtr handle)
4851                 {
4852                         Hwnd                    hwnd;
4853
4854                         hwnd = Hwnd.ObjectFromHandle(handle);
4855
4856                         if (hwnd.cached_window_state == (FormWindowState)(-1))
4857                                 hwnd.cached_window_state = UpdateWindowState (handle);
4858
4859                         return hwnd.cached_window_state;
4860                 }
4861
4862                 FormWindowState UpdateWindowState (IntPtr handle) {
4863                         IntPtr                  actual_atom;
4864                         int                     actual_format;
4865                         IntPtr                  nitems;
4866                         IntPtr                  bytes_after;
4867                         IntPtr                  prop = IntPtr.Zero;
4868                         IntPtr                  atom;
4869                         int                     maximized;
4870                         bool                    minimized;
4871                         XWindowAttributes       attributes;
4872                         Hwnd                    hwnd;
4873
4874                         hwnd = Hwnd.ObjectFromHandle(handle);
4875
4876                         maximized = 0;
4877                         minimized = false;
4878                         XGetWindowProperty(DisplayHandle, hwnd.whole_window, _NET_WM_STATE, IntPtr.Zero, new IntPtr (256), false, (IntPtr)Atom.XA_ATOM, out actual_atom, out actual_format, out nitems, out bytes_after, ref prop);
4879                         if (((long)nitems > 0) && (prop != IntPtr.Zero)) {
4880                                 for (int i = 0; i < (long)nitems; i++) {
4881                                         atom = (IntPtr)Marshal.ReadInt32(prop, i * 4);
4882                                         if ((atom == _NET_WM_STATE_MAXIMIZED_HORZ) || (atom == _NET_WM_STATE_MAXIMIZED_VERT)) {
4883                                                 maximized++;
4884                                         } else if (atom == _NET_WM_STATE_HIDDEN) {
4885                                                 minimized = true;
4886                                         }
4887                                 }
4888                                 XFree(prop);
4889                         }
4890
4891                         if (minimized) {
4892                                 return FormWindowState.Minimized;
4893                         } else if (maximized == 2) {
4894                                 return FormWindowState.Maximized;
4895                         }
4896
4897                         attributes = new XWindowAttributes();
4898                         XGetWindowAttributes(DisplayHandle, hwnd.client_window, ref attributes);
4899                         if (attributes.map_state == MapState.IsUnmapped) {
4900                                 return (FormWindowState)(-1);
4901                         }
4902
4903
4904                         return FormWindowState.Normal;
4905                 }
4906
4907                 internal override void GrabInfo(out IntPtr handle, out bool GrabConfined, out Rectangle GrabArea)
4908                 {
4909                         handle = Grab.Hwnd;
4910                         GrabConfined = Grab.Confined;
4911                         GrabArea = Grab.Area;
4912                 }
4913
4914                 internal override void GrabWindow(IntPtr handle, IntPtr confine_to_handle)
4915                 {
4916                         Hwnd    hwnd;
4917                         IntPtr  confine_to_window;
4918
4919                         confine_to_window = IntPtr.Zero;
4920
4921                         if (confine_to_handle != IntPtr.Zero) {
4922                                 XWindowAttributes       attributes = new XWindowAttributes();
4923
4924                                 hwnd = Hwnd.ObjectFromHandle(confine_to_handle);
4925
4926                                 lock (XlibLock) {
4927                                         XGetWindowAttributes(DisplayHandle, hwnd.client_window, ref attributes);
4928                                 }
4929                                 Grab.Area.X = attributes.x;
4930                                 Grab.Area.Y = attributes.y;
4931                                 Grab.Area.Width = attributes.width;
4932                                 Grab.Area.Height = attributes.height;
4933                                 Grab.Confined = true;
4934                                 confine_to_window = hwnd.client_window;
4935                         }
4936
4937                         Grab.Hwnd = handle;
4938
4939                         hwnd = Hwnd.ObjectFromHandle(handle);
4940
4941                         lock (XlibLock) {
4942                                 XGrabPointer(DisplayHandle, hwnd.client_window, false,
4943                                         EventMask.ButtonPressMask | EventMask.ButtonMotionMask |
4944                                         EventMask.ButtonReleaseMask | EventMask.PointerMotionMask |
4945                                         EventMask.PointerMotionHintMask | EventMask.LeaveWindowMask,
4946                                         GrabMode.GrabModeAsync, GrabMode.GrabModeAsync, confine_to_window, IntPtr.Zero, IntPtr.Zero);
4947                         }
4948                 }
4949
4950                 internal override void UngrabWindow(IntPtr hwnd)
4951                 {
4952                         lock (XlibLock) {
4953                                 XUngrabPointer(DisplayHandle, IntPtr.Zero);
4954                                 XFlush(DisplayHandle);
4955                         }
4956                         WindowUngrabbed (hwnd);
4957                 }
4958
4959                 void WindowUngrabbed (IntPtr hwnd) {
4960                         bool was_grabbed = Grab.Hwnd != IntPtr.Zero;
4961
4962                         Grab.Hwnd = IntPtr.Zero;
4963                         Grab.Confined = false;
4964
4965                         if (was_grabbed) {
4966                                 // lparam should be the handle to the window gaining the mouse capture,
4967                                 // but X doesn't seem to give us that information.
4968                                 // Also only generate WM_CAPTURECHANGED if the window actually was grabbed.
4969                                 // X will send a NotifyUngrab, but since it comes late sometimes we're
4970                                 // calling WindowUngrabbed directly from UngrabWindow in order to send
4971                                 // this WM right away.
4972                                 SendMessage (hwnd, Msg.WM_CAPTURECHANGED, IntPtr.Zero, IntPtr.Zero);
4973                         }
4974                 }
4975
4976                 internal override void HandleException(Exception e)
4977                 {
4978                         StackTrace st = new StackTrace(e, true);
4979                         Console.WriteLine("Exception '{0}'", e.Message+st.ToString());
4980                         Console.WriteLine("{0}{1}", e.Message, st.ToString());
4981                 }
4982
4983                 internal override void Invalidate(IntPtr handle, Rectangle rc, bool clear)
4984                 {
4985                         Hwnd    hwnd;
4986
4987                         hwnd = Hwnd.ObjectFromHandle(handle);
4988
4989                         if (clear) {
4990                                 AddExpose (hwnd, true, hwnd.X, hwnd.Y, hwnd.Width, hwnd.Height);
4991                         } else {
4992                                 AddExpose (hwnd, true, rc.X, rc.Y, rc.Width, rc.Height);
4993                         }
4994                 }
4995
4996                 internal override void InvalidateNC (IntPtr handle)
4997                 {
4998                         Hwnd    hwnd;
4999
5000                         hwnd = Hwnd.ObjectFromHandle(handle);
5001
5002                         AddExpose (hwnd, hwnd.WholeWindow == hwnd.ClientWindow, 0, 0, hwnd.Width, hwnd.Height);
5003                 }
5004
5005                 internal override bool IsEnabled(IntPtr handle)
5006                 {
5007                         Hwnd hwnd = Hwnd.ObjectFromHandle (handle);
5008                         return (hwnd != null && hwnd.Enabled);
5009                 }
5010
5011                 internal override bool IsVisible(IntPtr handle)
5012                 {
5013                         Hwnd hwnd = Hwnd.ObjectFromHandle (handle);
5014                         return (hwnd != null && hwnd.visible);
5015                 }
5016
5017                 internal override void KillTimer(Timer timer)
5018                 {
5019                         XEventQueue queue = (XEventQueue) MessageQueues [timer.thread];
5020
5021                         if (queue == null) {
5022                                 // This isn't really an error, MS doesn't start the timer if
5023                                 // it has no assosciated queue. In this case, remove the timer
5024                                 // from the list of unattached timers (if it was enabled).
5025                                 lock (unattached_timer_list) {
5026                                         if (unattached_timer_list.Contains (timer))
5027                                                 unattached_timer_list.Remove (timer);
5028                                 }
5029                                 return;
5030                         }
5031                         queue.timer_list.Remove (timer);
5032                 }
5033
5034                 internal override void MenuToScreen(IntPtr handle, ref int x, ref int y)
5035                 {
5036                         int     dest_x_return;
5037                         int     dest_y_return;
5038                         IntPtr  child;
5039                         Hwnd    hwnd;
5040
5041                         hwnd = Hwnd.ObjectFromHandle(handle);
5042
5043                         lock (XlibLock) {
5044                                 XTranslateCoordinates(DisplayHandle, hwnd.whole_window, RootWindow, x, y, out dest_x_return, out dest_y_return, out child);
5045                         }
5046
5047                         x = dest_x_return;
5048                         y = dest_y_return;
5049                 }
5050
5051                 internal override void OverrideCursor(IntPtr cursor)
5052                 {
5053                         if (Grab.Hwnd != IntPtr.Zero) {
5054                                 XChangeActivePointerGrab (DisplayHandle,
5055                                                 EventMask.ButtonMotionMask |
5056                                                 EventMask.PointerMotionMask |
5057                                                 EventMask.PointerMotionHintMask |
5058                                                 EventMask.ButtonPressMask |
5059                                                 EventMask.ButtonReleaseMask,
5060                                                 cursor, IntPtr.Zero);
5061                                 return;
5062                         }
5063
5064                         OverrideCursorHandle = cursor;
5065                 }
5066
5067                 internal override PaintEventArgs PaintEventStart(ref Message msg, IntPtr handle, bool client)
5068                 {
5069                         PaintEventArgs  paint_event;
5070                         Hwnd            hwnd;
5071                         Hwnd            paint_hwnd;
5072
5073                         //
5074                         // handle  (and paint_hwnd) refers to the window that is should be painted.
5075                         // msg.HWnd (and hwnd) refers to the window that got the paint message.
5076                         //
5077
5078                         hwnd = Hwnd.ObjectFromHandle(msg.HWnd);
5079                         if (msg.HWnd == handle) {
5080                                 paint_hwnd = hwnd;
5081                         } else {
5082                                 paint_hwnd = Hwnd.ObjectFromHandle (handle);
5083                         }
5084
5085                         if (Caret.Visible == true) {
5086                                 Caret.Paused = true;
5087                                 HideCaret();
5088                         }
5089
5090                         Graphics dc;
5091
5092                         if (client) {
5093                                 dc = Graphics.FromHwnd (paint_hwnd.client_window);
5094
5095                                 Region clip_region = new Region ();
5096                                 clip_region.MakeEmpty();
5097
5098                                 foreach (Rectangle r in hwnd.ClipRectangles) {
5099                                         /* Expand the region slightly.
5100                                          * See bug 464464.
5101                                          */
5102                                         Rectangle r2 = Rectangle.FromLTRB (r.Left, r.Top, r.Right, r.Bottom + 1);
5103                                         clip_region.Union (r2);
5104                                 }
5105
5106                                 if (hwnd.UserClip != null) {
5107                                         clip_region.Intersect(hwnd.UserClip);
5108                                 }
5109
5110                                 dc.Clip = clip_region;
5111                                 paint_event = new PaintEventArgs(dc, hwnd.Invalid);
5112                                 hwnd.expose_pending = false;
5113
5114                                 hwnd.ClearInvalidArea();
5115
5116                                 hwnd.drawing_stack.Push (paint_event);
5117                                 hwnd.drawing_stack.Push (dc);
5118
5119                                 return paint_event;
5120                         } else {
5121                                 dc = Graphics.FromHwnd (paint_hwnd.whole_window);
5122
5123                                 if (!hwnd.nc_invalid.IsEmpty) {
5124                                         dc.SetClip (hwnd.nc_invalid);
5125                                         paint_event = new PaintEventArgs(dc, hwnd.nc_invalid);
5126                                 } else {
5127                                         paint_event = new PaintEventArgs(dc, new Rectangle(0, 0, hwnd.width, hwnd.height));
5128                                 }
5129                                 hwnd.nc_expose_pending = false;
5130
5131                                 hwnd.ClearNcInvalidArea ();
5132
5133                                 hwnd.drawing_stack.Push (paint_event);
5134                                 hwnd.drawing_stack.Push (dc);
5135
5136                                 return paint_event;
5137                         }
5138                 }
5139
5140                 internal override void PaintEventEnd(ref Message msg, IntPtr handle, bool client)
5141                 {
5142                         Hwnd    hwnd;
5143
5144                         hwnd = Hwnd.ObjectFromHandle (msg.HWnd);
5145
5146                         Graphics dc = (Graphics)hwnd.drawing_stack.Pop ();
5147                         dc.Flush();
5148                         dc.Dispose();
5149
5150                         PaintEventArgs pe = (PaintEventArgs)hwnd.drawing_stack.Pop();
5151                         pe.SetGraphics (null);
5152                         pe.Dispose ();
5153
5154                         if (Caret.Visible == true) {
5155                                 ShowCaret();
5156                                 Caret.Paused = false;
5157                         }
5158                 }
5159
5160                 [MonoTODO("Implement filtering and PM_NOREMOVE")]
5161                 internal override bool PeekMessage(Object queue_id, ref MSG msg, IntPtr hWnd, int wFilterMin, int wFilterMax, uint flags)
5162                 {
5163                         XEventQueue queue = (XEventQueue) queue_id;
5164                         bool    pending;
5165
5166                         if ((flags & (uint)PeekMessageFlags.PM_REMOVE) == 0) {
5167                                 throw new NotImplementedException("PeekMessage PM_NOREMOVE is not implemented yet");    // FIXME - Implement PM_NOREMOVE flag
5168                         }
5169
5170                         pending = false;
5171                         if (queue.Count > 0) {
5172                                 pending = true;
5173                         } else {
5174                                 // Only call UpdateMessageQueue if real events are pending
5175                                 // otherwise we go to sleep on the socket
5176                                 if (XPending(DisplayHandle) != 0) {
5177                                         UpdateMessageQueue((XEventQueue)queue_id);
5178                                         pending = true;
5179                                 } else if (((XEventQueue)queue_id).Paint.Count > 0) {
5180                                         pending = true;
5181                                 }
5182                         }
5183
5184                         CheckTimers(queue.timer_list, DateTime.UtcNow);
5185
5186                         if (!pending) {
5187                                 return false;
5188                         }
5189                         return GetMessage(queue_id, ref msg, hWnd, wFilterMin, wFilterMax);
5190                 }
5191
5192                 internal override bool PostMessage (IntPtr handle, Msg message, IntPtr wparam, IntPtr lparam)
5193                 {
5194                         XEvent xevent = new XEvent ();
5195                         Hwnd hwnd = Hwnd.ObjectFromHandle(handle);
5196
5197                         xevent.type = XEventName.ClientMessage;
5198                         xevent.ClientMessageEvent.display = DisplayHandle;
5199
5200                         if (hwnd != null) {
5201                                 xevent.ClientMessageEvent.window = hwnd.whole_window;
5202                         } else {
5203                                 xevent.ClientMessageEvent.window = IntPtr.Zero;
5204                         }
5205
5206                         xevent.ClientMessageEvent.message_type = (IntPtr) PostAtom;
5207                         xevent.ClientMessageEvent.format = 32;
5208                         xevent.ClientMessageEvent.ptr1 = handle;
5209                         xevent.ClientMessageEvent.ptr2 = (IntPtr) message;
5210                         xevent.ClientMessageEvent.ptr3 = wparam;
5211                         xevent.ClientMessageEvent.ptr4 = lparam;
5212
5213                         if (hwnd != null)
5214                                 hwnd.Queue.EnqueueLocked (xevent);
5215                         else
5216                                 ThreadQueue(Thread.CurrentThread).EnqueueLocked (xevent);
5217
5218                         return true;
5219                 }
5220
5221                 internal override void PostQuitMessage(int exitCode)
5222                 {
5223                         ApplicationContext ctx = Application.MWFThread.Current.Context;
5224                         Form f = ctx != null ? ctx.MainForm : null;
5225                         if (f != null)
5226                                 PostMessage (Application.MWFThread.Current.Context.MainForm.window.Handle, Msg.WM_QUIT, IntPtr.Zero, IntPtr.Zero);
5227                         else
5228                                 PostMessage (FosterParent, Msg.WM_QUIT, IntPtr.Zero, IntPtr.Zero);
5229                         XFlush(DisplayHandle);
5230                 }
5231
5232                 internal override void RequestAdditionalWM_NCMessages(IntPtr hwnd, bool hover, bool leave)
5233                 {
5234                         // TODO
5235                 }
5236
5237                 internal override void RequestNCRecalc(IntPtr handle)
5238                 {
5239                         Hwnd                            hwnd;
5240
5241                         hwnd = Hwnd.ObjectFromHandle(handle);
5242
5243                         if (hwnd == null) {
5244                                 return;
5245                         }
5246
5247                         PerformNCCalc(hwnd);
5248                         SendMessage(handle, Msg.WM_WINDOWPOSCHANGED, IntPtr.Zero, IntPtr.Zero);
5249                         InvalidateNC(handle);
5250                 }
5251
5252                 internal override void ResetMouseHover(IntPtr handle)
5253                 {
5254                         Hwnd    hwnd;
5255
5256                         hwnd = Hwnd.ObjectFromHandle(handle);
5257                         if (hwnd == null) {
5258                                 return;
5259                         }
5260
5261                         HoverState.Timer.Enabled = true;
5262                         HoverState.X = mouse_position.X;
5263                         HoverState.Y = mouse_position.Y;
5264                         HoverState.Window = handle;
5265                 }
5266
5267
5268                 internal override void ScreenToClient(IntPtr handle, ref int x, ref int y)
5269                 {
5270                         int     dest_x_return;
5271                         int     dest_y_return;
5272                         IntPtr  child;
5273                         Hwnd    hwnd;
5274
5275                         hwnd = Hwnd.ObjectFromHandle(handle);
5276
5277                         lock (XlibLock) {
5278                                 XTranslateCoordinates (DisplayHandle, RootWindow, hwnd.client_window, x, y, out dest_x_return, out dest_y_return, out child);
5279                         }
5280
5281                         x = dest_x_return;
5282                         y = dest_y_return;
5283                 }
5284
5285                 internal override void ScreenToMenu(IntPtr handle, ref int x, ref int y)
5286                 {
5287                         int     dest_x_return;
5288                         int     dest_y_return;
5289                         IntPtr  child;
5290                         Hwnd    hwnd;
5291
5292                         hwnd = Hwnd.ObjectFromHandle(handle);
5293
5294                         lock (XlibLock) {
5295                                 XTranslateCoordinates (DisplayHandle, RootWindow, hwnd.whole_window, x, y, out dest_x_return, out dest_y_return, out child);
5296                         }
5297
5298                         Form form = Control.FromHandle (handle) as Form;
5299                         if (form != null && form.window_manager != null) {
5300                                 dest_y_return -= form.window_manager.TitleBarHeight;
5301                         }
5302
5303                         x = dest_x_return;
5304                         y = dest_y_return;
5305                 }
5306
5307                 bool GraphicsExposePredicate (IntPtr display, ref XEvent xevent, IntPtr arg)
5308                 {
5309                         return (xevent.type == XEventName.GraphicsExpose || xevent.type == XEventName.NoExpose) &&
5310                                 arg == xevent.GraphicsExposeEvent.drawable;
5311                 }
5312
5313                 delegate bool EventPredicate (IntPtr display, ref XEvent xevent, IntPtr arg);
5314
5315                 void ProcessGraphicsExpose (Hwnd hwnd)
5316                 {
5317                         XEvent xevent = new XEvent ();
5318                         IntPtr handle = Hwnd.HandleFromObject (hwnd);
5319                         EventPredicate predicate = GraphicsExposePredicate;
5320
5321                         for (;;) {
5322                                 XIfEvent (Display, ref xevent, predicate, handle);
5323                                 if (xevent.type != XEventName.GraphicsExpose)
5324                                         break;
5325
5326                                 AddExpose (hwnd, xevent.ExposeEvent.window == hwnd.ClientWindow, xevent.GraphicsExposeEvent.x, xevent.GraphicsExposeEvent.y,
5327                                                 xevent.GraphicsExposeEvent.width, xevent.GraphicsExposeEvent.height);
5328
5329                                 if (xevent.GraphicsExposeEvent.count == 0)
5330                                         break;
5331                         }
5332                 }
5333
5334                 internal override void ScrollWindow(IntPtr handle, Rectangle area, int XAmount, int YAmount, bool with_children)
5335                 {
5336                         Hwnd            hwnd;
5337                         IntPtr          gc;
5338                         XGCValues       gc_values;
5339
5340                         hwnd = Hwnd.ObjectFromHandle(handle);
5341
5342                         Rectangle r = Rectangle.Intersect (hwnd.Invalid, area);
5343                         if (!r.IsEmpty) {
5344                                 /* We have an invalid area in the window we're scrolling.
5345                                    Adjust our stored invalid rectangle to to match the scrolled amount */
5346
5347                                 r.X += XAmount;
5348                                 r.Y += YAmount;
5349
5350                                 if (r.X < 0) {
5351                                         r.Width += r.X;
5352                                         r.X =0;
5353                                 }
5354
5355                                 if (r.Y < 0) {
5356                                         r.Height += r.Y;
5357                                         r.Y =0;
5358                                 }
5359
5360                                 if (area.Contains (hwnd.Invalid))
5361                                         hwnd.ClearInvalidArea ();
5362                                 hwnd.AddInvalidArea(r);
5363                         }
5364
5365                         gc_values = new XGCValues();
5366
5367                         if (with_children) {
5368                                 gc_values.subwindow_mode = GCSubwindowMode.IncludeInferiors;
5369                         }
5370
5371                         gc = XCreateGC(DisplayHandle, hwnd.client_window, IntPtr.Zero, ref gc_values);
5372
5373                         Rectangle visible_rect = GetTotalVisibleArea (hwnd.client_window);
5374                         visible_rect.Intersect (area);
5375
5376                         Rectangle dest_rect = visible_rect;
5377                         dest_rect.Y += YAmount;
5378                         dest_rect.X += XAmount;
5379                         dest_rect.Intersect (area);
5380
5381                         Point src = new Point (dest_rect.X - XAmount, dest_rect.Y - YAmount);
5382                         XCopyArea (DisplayHandle, hwnd.client_window, hwnd.client_window, gc, src.X, src.Y,
5383                                         dest_rect.Width, dest_rect.Height, dest_rect.X, dest_rect.Y);
5384
5385                         Rectangle dirty_area = GetDirtyArea (area, dest_rect, XAmount, YAmount);
5386                         AddExpose (hwnd, true, dirty_area.X, dirty_area.Y, dirty_area.Width, dirty_area.Height);
5387
5388                         ProcessGraphicsExpose (hwnd);
5389
5390                         XFreeGC(DisplayHandle, gc);
5391                 }
5392
5393                 internal override void ScrollWindow(IntPtr handle, int XAmount, int YAmount, bool with_children)
5394                 {
5395                         Hwnd            hwnd;
5396                         Rectangle       rect;
5397
5398                         hwnd = Hwnd.GetObjectFromWindow(handle);
5399
5400                         rect = hwnd.ClientRect;
5401                         rect.X = 0;
5402                         rect.Y = 0;
5403                         ScrollWindow(handle, rect, XAmount, YAmount, with_children);
5404                 }
5405
5406                 Rectangle GetDirtyArea (Rectangle total_area, Rectangle valid_area, int XAmount, int YAmount)
5407                 {
5408                         Rectangle dirty_area = total_area;
5409
5410                         if (YAmount > 0)
5411                                 dirty_area.Height -= valid_area.Height;
5412                         else if (YAmount < 0) {
5413                                 dirty_area.Height -= valid_area.Height;
5414                                 dirty_area.Y += valid_area.Height;
5415                         }
5416
5417                         if (XAmount > 0)
5418                                 dirty_area.Width -= valid_area.Width;
5419                         else if (XAmount < 0) {
5420                                 dirty_area.Width -= valid_area.Width;
5421                                 dirty_area.X += valid_area.Width;
5422                         }
5423
5424                         return dirty_area;
5425                 }
5426
5427                 Rectangle GetTotalVisibleArea (IntPtr handle)
5428                 {
5429                         Control c = Control.FromHandle (handle);
5430
5431                         Rectangle visible_area = c.ClientRectangle;
5432                         visible_area.Location = c.PointToScreen (Point.Empty);
5433
5434                         for (Control parent = c.Parent; parent != null; parent = parent.Parent) {
5435                                 if (!parent.IsHandleCreated || !parent.Visible)
5436                                         return visible_area; // Non visible, not need to finish computations
5437
5438                                 Rectangle r = parent.ClientRectangle;
5439                                 r.Location = parent.PointToScreen (Point.Empty);
5440
5441                                 visible_area.Intersect (r);
5442                         }
5443
5444                         visible_area.Location = c.PointToClient (visible_area.Location);
5445                         return visible_area;
5446                 }
5447
5448                 internal override void SendAsyncMethod (AsyncMethodData method)
5449                 {
5450                         Hwnd    hwnd;
5451                         XEvent  xevent = new XEvent ();
5452
5453                         hwnd = Hwnd.ObjectFromHandle(method.Handle);
5454
5455                         xevent.type = XEventName.ClientMessage;
5456                         xevent.ClientMessageEvent.display = DisplayHandle;
5457                         xevent.ClientMessageEvent.window = method.Handle;
5458                         xevent.ClientMessageEvent.message_type = (IntPtr)AsyncAtom;
5459                         xevent.ClientMessageEvent.format = 32;
5460                         xevent.ClientMessageEvent.ptr1 = (IntPtr) GCHandle.Alloc (method);
5461
5462                         hwnd.Queue.EnqueueLocked (xevent);
5463
5464                         WakeupMain ();
5465                 }
5466
5467                 delegate IntPtr WndProcDelegate (IntPtr hwnd, Msg message, IntPtr wParam, IntPtr lParam);
5468
5469                 internal override IntPtr SendMessage (IntPtr hwnd, Msg message, IntPtr wParam, IntPtr lParam)
5470                 {
5471                         Hwnd    h;
5472                         h = Hwnd.ObjectFromHandle(hwnd);
5473
5474                         if (h != null && h.queue != ThreadQueue (Thread.CurrentThread)) {
5475                                 AsyncMethodResult       result;
5476                                 AsyncMethodData         data;
5477
5478                                 result = new AsyncMethodResult ();
5479                                 data = new AsyncMethodData ();
5480
5481                                 data.Handle = hwnd;
5482                                 data.Method = new WndProcDelegate (NativeWindow.WndProc);
5483                                 data.Args = new object[] { hwnd, message, wParam, lParam };
5484                                 data.Result = result;
5485
5486                                 SendAsyncMethod (data);
5487                                 DriverDebug("Sending {0} message across.", message);
5488
5489                                 return IntPtr.Zero;
5490                         }
5491                         string key = hwnd + ":" + message;
5492                         if (messageHold[key] != null)
5493                                 messageHold[key] = ((int)messageHold[key]) - 1;
5494                         return NativeWindow.WndProc(hwnd, message, wParam, lParam);
5495                 }
5496
5497                 internal override int SendInput(IntPtr handle, Queue keys)
5498                 {
5499                         if (handle == IntPtr.Zero)
5500                                 return 0;
5501
5502                         int count = keys.Count;
5503                         Hwnd hwnd = Hwnd.ObjectFromHandle(handle);
5504
5505                         while (keys.Count > 0) {
5506
5507                                 MSG msg = (MSG)keys.Dequeue();
5508
5509                                 XEvent xevent = new XEvent ();
5510
5511                                 xevent.type = (msg.message == Msg.WM_KEYUP ? XEventName.KeyRelease : XEventName.KeyPress);
5512                                 xevent.KeyEvent.display = DisplayHandle;
5513
5514                                 if (hwnd != null) {
5515                                         xevent.KeyEvent.window = hwnd.whole_window;
5516                                 } else {
5517                                         xevent.KeyEvent.window = IntPtr.Zero;
5518                                 }
5519
5520                                 xevent.KeyEvent.keycode = Keyboard.ToKeycode((int)msg.wParam);
5521
5522                                 hwnd.Queue.EnqueueLocked (xevent);
5523                         }
5524                         return count;
5525                 }
5526
5527                 internal override void SetAllowDrop (IntPtr handle, bool value)
5528                 {
5529                         // We allow drop on all windows
5530                 }
5531
5532                 internal override DragDropEffects StartDrag (IntPtr handle, object data,
5533                                 DragDropEffects allowed_effects)
5534                 {
5535                         Hwnd hwnd = Hwnd.ObjectFromHandle (handle);
5536
5537                         if (hwnd == null)
5538                                 throw new ArgumentException ("Attempt to begin drag from invalid window handle (" + handle.ToInt32 () + ").");
5539
5540                         return Dnd.StartDrag (hwnd.client_window, data, allowed_effects);
5541                 }
5542
5543                 internal override void SetBorderStyle(IntPtr handle, FormBorderStyle border_style)
5544                 {
5545                         Form form = Control.FromHandle (handle) as Form;
5546                         if (form != null && form.window_manager == null) {
5547                                 CreateParams cp = form.GetCreateParams ();
5548                                 if (border_style == FormBorderStyle.FixedToolWindow ||
5549                                      border_style == FormBorderStyle.SizableToolWindow ||
5550                                      cp.IsSet (WindowExStyles.WS_EX_TOOLWINDOW)) {
5551                                         form.window_manager = new ToolWindowManager (form);
5552                                 }
5553                         }
5554
5555                         RequestNCRecalc(handle);
5556                 }
5557
5558                 internal override void SetCaretPos(IntPtr handle, int x, int y)
5559                 {
5560                         if (Caret.Hwnd == handle) {
5561                                 Caret.Timer.Stop();
5562                                 HideCaret();
5563
5564                                 Caret.X = x;
5565                                 Caret.Y = y;
5566
5567                                 Keyboard.SetCaretPos (Caret, handle, x, y);
5568
5569                                 if (Caret.Visible == true) {
5570                                         ShowCaret();
5571                                         Caret.Timer.Start();
5572                                 }
5573                         }
5574                 }
5575
5576                 internal override void SetClipRegion(IntPtr handle, Region region)
5577                 {
5578                         Hwnd    hwnd;
5579
5580                         hwnd = Hwnd.ObjectFromHandle(handle);
5581                         if (hwnd == null) {
5582                                 return;
5583                         }
5584
5585                         hwnd.UserClip = region;
5586                 }
5587
5588                 internal override void SetCursor(IntPtr handle, IntPtr cursor)
5589                 {
5590                         Hwnd    hwnd;
5591
5592                         if (OverrideCursorHandle == IntPtr.Zero) {
5593                                 if ((LastCursorWindow == handle) && (LastCursorHandle == cursor)) {
5594                                         return;
5595                                 }
5596
5597                                 LastCursorHandle = cursor;
5598                                 LastCursorWindow = handle;
5599
5600                                 hwnd = Hwnd.ObjectFromHandle(handle);
5601                                 lock (XlibLock) {
5602                                         if (cursor != IntPtr.Zero) {
5603                                                 XDefineCursor(DisplayHandle, hwnd.whole_window, cursor);
5604                                         } else {
5605                                                 XUndefineCursor(DisplayHandle, hwnd.whole_window);
5606                                         }
5607                                         XFlush(DisplayHandle);
5608                                 }
5609                                 return;
5610                         }
5611
5612                         hwnd = Hwnd.ObjectFromHandle(handle);
5613                         lock (XlibLock) {
5614                                 XDefineCursor(DisplayHandle, hwnd.whole_window, OverrideCursorHandle);
5615                         }
5616                 }
5617
5618                 void QueryPointer (IntPtr display, IntPtr w, out IntPtr root, out IntPtr child,
5619                                            out int root_x, out int root_y, out int child_x, out int child_y,
5620                                            out int mask)
5621                 {
5622                         /* this code was written with the help of
5623                         glance at gdk.  I never would have realized we
5624                         needed a loop in order to traverse down in the
5625                         hierarchy.  I would have assumed you'd get the
5626                         most deeply nested child and have to do
5627                         XQueryTree to move back up the hierarchy..
5628                         stupid me, of course. */
5629                         IntPtr c;
5630
5631                         XGrabServer (display);
5632
5633                         XQueryPointer(display, w, out root, out c,
5634                                       out root_x, out root_y, out child_x, out child_y,
5635                                       out mask);
5636
5637                         if (root != w)
5638                                 c = root;
5639
5640                         IntPtr child_last = IntPtr.Zero;
5641                         while (c != IntPtr.Zero) {
5642                                 child_last = c;
5643                                 XQueryPointer(display, c, out root, out c,
5644                                               out root_x, out root_y, out child_x, out child_y,
5645                                               out mask);
5646                         }
5647                         XUngrabServer (display);
5648                         XFlush (display);
5649
5650                         child = child_last;
5651                 }
5652
5653                 internal override void SetCursorPos(IntPtr handle, int x, int y)
5654                 {
5655                         if (handle == IntPtr.Zero) {
5656                                 lock (XlibLock) {
5657                                         IntPtr root, child;
5658                                         int root_x, root_y, child_x, child_y, mask;
5659
5660                                         /* we need to do a
5661                                          * QueryPointer before warping
5662                                          * because if the warp is on
5663                                          * the RootWindow, the x/y are
5664                                          * relative to the current
5665                                          * mouse position
5666                                          */
5667                                         QueryPointer (DisplayHandle, RootWindow,
5668                                                       out root,
5669                                                       out child,
5670                                                       out root_x, out root_y,
5671                                                       out child_x, out child_y,
5672                                                       out mask);
5673
5674                                         XWarpPointer(DisplayHandle, IntPtr.Zero, IntPtr.Zero, 0, 0, 0, 0, x - root_x, y - root_y);
5675
5676                                         XFlush (DisplayHandle);
5677
5678                                         /* then we need to a
5679                                          * QueryPointer after warping
5680                                          * to manually generate a
5681                                          * motion event for the window
5682                                          * we move into.
5683                                          */
5684                                         QueryPointer (DisplayHandle, RootWindow,
5685                                                       out root,
5686                                                       out child,
5687                                                       out root_x, out root_y,
5688                                                       out child_x, out child_y,
5689                                                       out mask);
5690
5691                                         Hwnd child_hwnd = Hwnd.ObjectFromHandle(child);
5692                                         if (child_hwnd == null) {
5693                                                 return;
5694                                         }
5695
5696                                         XEvent xevent = new XEvent ();
5697
5698                                         xevent.type = XEventName.MotionNotify;
5699                                         xevent.MotionEvent.display = DisplayHandle;
5700                                         xevent.MotionEvent.window = child_hwnd.client_window;
5701                                         xevent.MotionEvent.root = RootWindow;
5702                                         xevent.MotionEvent.x = child_x;
5703                                         xevent.MotionEvent.y = child_y;
5704                                         xevent.MotionEvent.x_root = root_x;
5705                                         xevent.MotionEvent.y_root = root_y;
5706                                         xevent.MotionEvent.state = mask;
5707
5708                                         child_hwnd.Queue.EnqueueLocked (xevent);
5709                                 }
5710                         } else {
5711                                 Hwnd    hwnd;
5712
5713                                 hwnd = Hwnd.ObjectFromHandle(handle);
5714                                 lock (XlibLock) {
5715                                         XWarpPointer(DisplayHandle, IntPtr.Zero, hwnd.client_window, 0, 0, 0, 0, x, y);
5716                                 }
5717                         }
5718                 }
5719
5720                 internal override void SetFocus(IntPtr handle)
5721                 {
5722                         Hwnd    hwnd;
5723                         IntPtr  prev_focus_window;
5724
5725                         hwnd = Hwnd.ObjectFromHandle(handle);
5726
5727                         if (hwnd.client_window == FocusWindow) {
5728                                 return;
5729                         }
5730
5731                         // Win32 doesn't do anything if disabled
5732                         if (!hwnd.enabled)
5733                                 return;
5734
5735                         prev_focus_window = FocusWindow;
5736                         FocusWindow = hwnd.client_window;
5737
5738                         if (prev_focus_window != IntPtr.Zero) {
5739                                 SendMessage(prev_focus_window, Msg.WM_KILLFOCUS, FocusWindow, IntPtr.Zero);
5740                         }
5741                         Keyboard.FocusIn (FocusWindow);
5742                         SendMessage(FocusWindow, Msg.WM_SETFOCUS, prev_focus_window, IntPtr.Zero);
5743
5744                         //XSetInputFocus(DisplayHandle, Hwnd.ObjectFromHandle(handle).client_window, RevertTo.None, IntPtr.Zero);
5745                 }
5746
5747                 internal override void SetIcon(IntPtr handle, Icon icon)
5748                 {
5749                         Hwnd    hwnd;
5750
5751                         hwnd = Hwnd.ObjectFromHandle(handle);
5752                         if (hwnd != null) {
5753                                 SetIcon(hwnd, icon);
5754                         }
5755                 }
5756
5757                 internal override void SetMenu(IntPtr handle, Menu menu)
5758                 {
5759                         Hwnd    hwnd;
5760
5761                         hwnd = Hwnd.ObjectFromHandle(handle);
5762                         hwnd.menu = menu;
5763
5764                         RequestNCRecalc(handle);
5765                 }
5766
5767                 internal override void SetModal(IntPtr handle, bool Modal)
5768                 {
5769                         if (Modal) {
5770                                 ModalWindows.Push(handle);
5771                         } else {
5772                                 if (ModalWindows.Contains(handle)) {
5773                                         ModalWindows.Pop();
5774                                 }
5775                                 if (ModalWindows.Count > 0) {
5776                                         Activate((IntPtr)ModalWindows.Peek());
5777                                 }
5778                         }
5779
5780                         Hwnd hwnd = Hwnd.ObjectFromHandle (handle);
5781                         Control ctrl = Control.FromHandle (handle);
5782                         SetWMStyles (hwnd, ctrl.GetCreateParams ());
5783                 }
5784
5785                 internal override IntPtr SetParent(IntPtr handle, IntPtr parent)
5786                 {
5787                         Hwnd    hwnd;
5788
5789                         hwnd = Hwnd.ObjectFromHandle(handle);
5790                         hwnd.parent = Hwnd.ObjectFromHandle(parent);
5791
5792                         lock (XlibLock) {
5793                                 DriverDebug("Parent for window {0} = {1}", XplatUI.Window(hwnd.Handle), XplatUI.Window(hwnd.parent != null ? hwnd.parent.Handle : IntPtr.Zero));
5794                                 XReparentWindow(DisplayHandle, hwnd.whole_window, hwnd.parent == null ? FosterParent : hwnd.parent.client_window, hwnd.x, hwnd.y);
5795                         }
5796
5797                         return IntPtr.Zero;
5798                 }
5799
5800                 internal override void SetTimer (Timer timer)
5801                 {
5802                         XEventQueue queue = (XEventQueue) MessageQueues [timer.thread];
5803
5804                         if (queue == null) {
5805                                 // This isn't really an error, MS doesn't start the timer if
5806                                 // it has no assosciated queue at this stage (it will be
5807                                 // enabled when a window is activated).
5808                                 unattached_timer_list.Add (timer);
5809                                 return;
5810                         }
5811                         queue.timer_list.Add (timer);
5812                         WakeupMain ();
5813                 }
5814
5815                 internal override bool SetTopmost(IntPtr handle, bool enabled)
5816                 {
5817
5818                         Hwnd hwnd = Hwnd.ObjectFromHandle(handle);
5819                         hwnd.topmost = enabled;
5820
5821                         if (enabled) {
5822                                 lock (XlibLock) {
5823                                         if (hwnd.Mapped) {
5824                                                 SendNetWMMessage(hwnd.WholeWindow, _NET_WM_STATE, (IntPtr) NetWmStateRequest._NET_WM_STATE_ADD, _NET_WM_STATE_ABOVE, IntPtr.Zero);
5825                                         } else {
5826                                                 int[] atoms = new int[8];
5827                                                 atoms[0] = _NET_WM_STATE_ABOVE.ToInt32();
5828                                                 XChangeProperty(DisplayHandle, hwnd.whole_window, _NET_WM_STATE, (IntPtr)Atom.XA_ATOM, 32, PropertyMode.Replace, atoms, 1);
5829                                         }
5830                                 }
5831                         } else {
5832                                 lock (XlibLock) {
5833                                         if (hwnd.Mapped)
5834                                                 SendNetWMMessage(hwnd.WholeWindow, _NET_WM_STATE, (IntPtr) NetWmStateRequest._NET_WM_STATE_REMOVE, _NET_WM_STATE_ABOVE, IntPtr.Zero);
5835                                         else
5836                                                 XDeleteProperty(DisplayHandle, hwnd.whole_window, _NET_WM_STATE);
5837                                 }
5838                         }
5839                         return true;
5840                 }
5841
5842                 internal override bool SetOwner(IntPtr handle, IntPtr handle_owner)
5843                 {
5844                         Hwnd hwnd;
5845                         Hwnd hwnd_owner;
5846
5847                         hwnd = Hwnd.ObjectFromHandle(handle);
5848
5849                         if (handle_owner != IntPtr.Zero) {
5850                                 hwnd_owner = Hwnd.ObjectFromHandle(handle_owner);
5851                                 lock (XlibLock) {
5852                                         int[]   atoms;
5853
5854                                         atoms = new int[8];
5855
5856                                         atoms[0] = _NET_WM_WINDOW_TYPE_NORMAL.ToInt32();
5857                                         XChangeProperty(DisplayHandle, hwnd.whole_window, _NET_WM_WINDOW_TYPE, (IntPtr)Atom.XA_ATOM, 32, PropertyMode.Replace, atoms, 1);
5858
5859                                         if (hwnd_owner != null) {
5860                                                 XSetTransientForHint(DisplayHandle, hwnd.whole_window, hwnd_owner.whole_window);
5861                                         } else {
5862                                                 XSetTransientForHint(DisplayHandle, hwnd.whole_window, RootWindow);
5863                                         }
5864                                 }
5865                         } else {
5866                                 lock (XlibLock) {
5867                                         XDeleteProperty(DisplayHandle, hwnd.whole_window, (IntPtr)Atom.XA_WM_TRANSIENT_FOR);
5868                                 }
5869                         }
5870                         return true;
5871                 }
5872
5873                 internal override bool SetVisible (IntPtr handle, bool visible, bool activate)
5874                 {
5875                         Hwnd    hwnd;
5876
5877                         hwnd = Hwnd.ObjectFromHandle(handle);
5878                         hwnd.visible = visible;
5879
5880                         lock (XlibLock) {
5881                                 if (visible) {
5882                                         MapWindow(hwnd, WindowType.Both);
5883
5884                                         if (Control.FromHandle(handle) is Form) {
5885                                                 FormWindowState s;
5886
5887                                                 s = ((Form)Control.FromHandle(handle)).WindowState;
5888
5889                                                 switch(s) {
5890                                                         case FormWindowState.Minimized: SetWindowState(handle, FormWindowState.Minimized); break;
5891                                                         case FormWindowState.Maximized: SetWindowState(handle, FormWindowState.Maximized); break;
5892                                                 }
5893                                         }
5894
5895                                         SendMessage(handle, Msg.WM_WINDOWPOSCHANGED, IntPtr.Zero, IntPtr.Zero);
5896                                 }
5897                                 else {
5898                                         UnmapWindow(hwnd, WindowType.Both);
5899                                 }
5900                         }
5901                         return true;
5902                 }
5903
5904                 internal override void SetWindowMinMax(IntPtr handle, Rectangle maximized, Size min, Size max)
5905                 {
5906                         Control ctrl = Control.FromHandle (handle);
5907                         SetWindowMinMax (handle, maximized, min, max, ctrl != null ? ctrl.GetCreateParams () : null);
5908                 }
5909
5910                 internal void SetWindowMinMax (IntPtr handle, Rectangle maximized, Size min, Size max, CreateParams cp)
5911                 {
5912                         Hwnd            hwnd;
5913                         XSizeHints      hints;
5914                         IntPtr          dummy;
5915
5916                         hwnd = Hwnd.ObjectFromHandle(handle);
5917                         if (hwnd == null) {
5918                                 return;
5919                         }
5920
5921                         min.Width = Math.Max (min.Width, SystemInformation.MinimumWindowSize.Width);
5922                         min.Height = Math.Max (min.Height, SystemInformation.MinimumWindowSize.Height);
5923
5924                         hints = new XSizeHints();
5925
5926                         XGetWMNormalHints(DisplayHandle, hwnd.whole_window, ref hints, out dummy);
5927                         if ((min != Size.Empty) && (min.Width > 0) && (min.Height > 0)) {
5928                                 if (cp != null)
5929                                         min = TranslateWindowSizeToXWindowSize (cp, min);
5930                                 hints.flags = (IntPtr)((int)hints.flags | (int)XSizeHintsFlags.PMinSize);
5931                                 hints.min_width = min.Width;
5932                                 hints.min_height = min.Height;
5933                         }
5934
5935                         if ((max != Size.Empty) && (max.Width > 0) && (max.Height > 0)) {
5936                                 if (cp != null)
5937                                         max = TranslateWindowSizeToXWindowSize (cp, max);
5938                                 hints.flags = (IntPtr)((int)hints.flags | (int)XSizeHintsFlags.PMaxSize);
5939                                 hints.max_width = max.Width;
5940                                 hints.max_height = max.Height;
5941                         }
5942
5943                         if (hints.flags != IntPtr.Zero) {
5944                                 // The Metacity team has decided that they won't care about this when clicking the maximize icon,
5945                                 // they will maximize the window to fill the screen/parent no matter what.
5946                                 // http://bugzilla.ximian.com/show_bug.cgi?id=80021
5947                                 XSetWMNormalHints(DisplayHandle, hwnd.whole_window, ref hints);
5948                         }
5949
5950                         if ((maximized != Rectangle.Empty) && (maximized.Width > 0) && (maximized.Height > 0)) {
5951                                 if (cp != null)
5952                                         maximized.Size = TranslateWindowSizeToXWindowSize (cp);
5953                                 hints.flags = (IntPtr)XSizeHintsFlags.PPosition;
5954                                 hints.x = maximized.X;
5955                                 hints.y = maximized.Y;
5956                                 hints.width = maximized.Width;
5957                                 hints.height = maximized.Height;
5958
5959                                 // Metacity does not seem to follow this constraint for maximized (zoomed) windows
5960                                 XSetZoomHints(DisplayHandle, hwnd.whole_window, ref hints);
5961                         }
5962                 }
5963
5964
5965                 internal override void SetWindowPos(IntPtr handle, int x, int y, int width, int height)
5966                 {
5967                         Hwnd            hwnd;
5968
5969                         hwnd = Hwnd.ObjectFromHandle(handle);
5970
5971                         if (hwnd == null) {
5972                                 return;
5973                         }
5974
5975                         // Win32 automatically changes negative width/height to 0.
5976                         if (width < 0)
5977                                 width = 0;
5978                         if (height < 0)
5979                                 height = 0;
5980
5981                         // X requires a sanity check for width & height; otherwise it dies
5982                         if (hwnd.zero_sized && width > 0 && height > 0) {
5983                                 if (hwnd.visible) {
5984                                         MapWindow(hwnd, WindowType.Whole);
5985                                 }
5986                                 hwnd.zero_sized = false;
5987                         }
5988
5989                         if ((width < 1) || (height < 1)) {
5990                                 hwnd.zero_sized = true;
5991                                 UnmapWindow(hwnd, WindowType.Whole);
5992                         }
5993
5994                         // Save a server roundtrip (and prevent a feedback loop)
5995                         if ((hwnd.x == x) && (hwnd.y == y) &&
5996                                 (hwnd.width == width) && (hwnd.height == height)) {
5997                                 return;
5998                         }
5999
6000                         if (!hwnd.zero_sized) {
6001                                 //Hack?
6002                                 hwnd.x = x;
6003                                 hwnd.y = y;
6004                                 hwnd.width = width;
6005                                 hwnd.height = height;
6006                                 SendMessage(hwnd.client_window, Msg.WM_WINDOWPOSCHANGED, IntPtr.Zero, IntPtr.Zero);
6007
6008                                 if (hwnd.fixed_size) {
6009                                         SetWindowMinMax(handle, Rectangle.Empty, new Size(width, height), new Size(width, height));
6010                                 }
6011
6012                                 lock (XlibLock) {
6013                                         Control ctrl = Control.FromHandle (handle);
6014                                         Size TranslatedSize = TranslateWindowSizeToXWindowSize (ctrl.GetCreateParams (), new Size (width, height));
6015                                         MoveResizeWindow (DisplayHandle, hwnd.whole_window, x, y, TranslatedSize.Width, TranslatedSize.Height);
6016                                         PerformNCCalc(hwnd);
6017                                 }
6018                         }
6019
6020                         // Update our position/size immediately, so
6021                         // that future calls to SetWindowPos aren't
6022                         // kept from calling XMoveResizeWindow (by the
6023                         // "Save a server roundtrip" block above).
6024                         hwnd.x = x;
6025                         hwnd.y = y;
6026                         hwnd.width = width;
6027                         hwnd.height = height;
6028                         hwnd.ClientRect = Rectangle.Empty;
6029                 }
6030
6031                 internal override void SetWindowState(IntPtr handle, FormWindowState state)
6032                 {
6033                         FormWindowState current_state;
6034                         Hwnd            hwnd;
6035
6036                         hwnd = Hwnd.ObjectFromHandle(handle);
6037
6038                         current_state = GetWindowState(handle);
6039
6040                         if (current_state == state) {
6041                                 return;
6042                         }
6043
6044                         switch(state) {
6045                                 case FormWindowState.Normal: {
6046                                         lock (XlibLock) {
6047                                                 if (current_state == FormWindowState.Minimized) {
6048                                                         MapWindow(hwnd, WindowType.Both);
6049                                                 } else if (current_state == FormWindowState.Maximized) {
6050                                                         SendNetWMMessage(hwnd.whole_window, _NET_WM_STATE, (IntPtr)2 /* toggle */, _NET_WM_STATE_MAXIMIZED_HORZ, _NET_WM_STATE_MAXIMIZED_VERT);
6051                                                 }
6052                                         }
6053                                         Activate(handle);
6054                                         return;
6055                                 }
6056
6057                                 case FormWindowState.Minimized: {
6058                                         lock (XlibLock) {
6059                                                 if (current_state == FormWindowState.Maximized) {
6060                                                         SendNetWMMessage(hwnd.whole_window, _NET_WM_STATE, (IntPtr)2 /* toggle */, _NET_WM_STATE_MAXIMIZED_HORZ, _NET_WM_STATE_MAXIMIZED_VERT);
6061                                                 }
6062                                                 XIconifyWindow(DisplayHandle, hwnd.whole_window, ScreenNo);
6063                                         }
6064                                         return;
6065                                 }
6066
6067                                 case FormWindowState.Maximized: {
6068                                         lock (XlibLock) {
6069                                                 if (current_state == FormWindowState.Minimized) {
6070                                                         MapWindow(hwnd, WindowType.Both);
6071                                                 }
6072
6073                                                 SendNetWMMessage(hwnd.whole_window, _NET_WM_STATE, (IntPtr)1 /* Add */, _NET_WM_STATE_MAXIMIZED_HORZ, _NET_WM_STATE_MAXIMIZED_VERT);
6074                                         }
6075                                         Activate(handle);
6076                                         return;
6077                                 }
6078                         }
6079                 }
6080
6081                 internal override void SetWindowStyle(IntPtr handle, CreateParams cp)
6082                 {
6083                         Hwnd    hwnd;
6084
6085                         hwnd = Hwnd.ObjectFromHandle(handle);
6086                         SetHwndStyles(hwnd, cp);
6087                         SetWMStyles(hwnd, cp);
6088                 }
6089
6090                 internal override double GetWindowTransparency(IntPtr handle)
6091                 {
6092                         return 1.0;
6093                 }
6094
6095                 internal override void SetWindowTransparency(IntPtr handle, double transparency, Color key)
6096                 {
6097                         Hwnd    hwnd;
6098                         IntPtr  opacity;
6099
6100                         hwnd = Hwnd.ObjectFromHandle(handle);
6101
6102                         if (hwnd == null) {
6103                                 return;
6104                         }
6105
6106                         hwnd.opacity = (uint)(0xffffffff * transparency);
6107                         opacity = (IntPtr)((int)hwnd.opacity);
6108
6109                         IntPtr w = hwnd.whole_window;
6110                         if (hwnd.reparented)
6111                                 w = XGetParent (hwnd.whole_window);
6112                         XChangeProperty(DisplayHandle, w, _NET_WM_WINDOW_OPACITY, (IntPtr)Atom.XA_CARDINAL, 32, PropertyMode.Replace, ref opacity, 1);
6113                 }
6114
6115                 internal override bool SetZOrder(IntPtr handle, IntPtr after_handle, bool top, bool bottom)
6116                 {
6117                         Hwnd    hwnd = Hwnd.ObjectFromHandle(handle);
6118
6119                         if (!hwnd.mapped) {
6120                                 return false;
6121                         }
6122
6123                         if (top) {
6124                                 lock (XlibLock) {
6125                                         XRaiseWindow(DisplayHandle, hwnd.whole_window);
6126                                 }
6127                                 return true;
6128                         } else if (!bottom) {
6129                                 Hwnd    after_hwnd = null;
6130
6131                                 if (after_handle != IntPtr.Zero) {
6132                                         after_hwnd = Hwnd.ObjectFromHandle(after_handle);
6133                                 }
6134
6135                                 XWindowChanges  values = new XWindowChanges();
6136
6137                                 if (after_hwnd == null) {
6138                                         // Work around metacity 'issues'
6139                                         int[]   atoms;
6140
6141                                         atoms = new int[2];
6142                                         atoms[0] = unixtime();
6143                                         XChangeProperty(DisplayHandle, hwnd.whole_window, _NET_WM_USER_TIME, (IntPtr)Atom.XA_CARDINAL, 32, PropertyMode.Replace, atoms, 1);
6144
6145                                         XRaiseWindow(DisplayHandle, hwnd.whole_window);
6146                                         SendNetWMMessage(hwnd.whole_window, _NET_ACTIVE_WINDOW, (IntPtr)1, IntPtr.Zero, IntPtr.Zero);
6147                                         return true;
6148                                         //throw new ArgumentNullException("after_handle", "Need sibling to adjust z-order");
6149                                 }
6150
6151                                 values.sibling = after_hwnd.whole_window;
6152                                 values.stack_mode = StackMode.Below;
6153
6154                                 lock (XlibLock) {
6155                                         XConfigureWindow(DisplayHandle, hwnd.whole_window, ChangeWindowFlags.CWStackMode | ChangeWindowFlags.CWSibling, ref values);
6156                                 }
6157                         } else {
6158                                 // Bottom
6159                                 lock (XlibLock) {
6160                                         XLowerWindow(DisplayHandle, hwnd.whole_window);
6161                                 }
6162                                 return true;
6163                         }
6164                         return false;
6165                 }
6166
6167                 internal override void ShowCursor(bool show)
6168                 {
6169                         ;       // FIXME - X11 doesn't 'hide' the cursor. we could create an empty cursor
6170                 }
6171
6172                 internal override object StartLoop(Thread thread)
6173                 {
6174                         XEventQueue q = ThreadQueue(thread);
6175                         return q;
6176                 }
6177
6178                 internal override TransparencySupport SupportsTransparency()
6179                 {
6180                         // We need to check if the x compositing manager is running
6181                         return TransparencySupport.Set;
6182                 }
6183
6184                 internal override bool SystrayAdd(IntPtr handle, string tip, Icon icon, out ToolTip tt)
6185                 {
6186                         GetSystrayManagerWindow();
6187
6188                         if (SystrayMgrWindow != IntPtr.Zero) {
6189                                 XSizeHints      size_hints;
6190                                 Hwnd            hwnd;
6191
6192                                 hwnd = Hwnd.ObjectFromHandle(handle);
6193                                 DriverDebug("Adding Systray Whole:{0:X}, Client:{1:X}", hwnd.whole_window.ToInt32(), hwnd.client_window.ToInt32());
6194
6195                                 // Oh boy.
6196                                 if (hwnd.client_window != hwnd.whole_window) {
6197                                         Keyboard.DestroyICForWindow (hwnd.client_window);
6198                                         XDestroyWindow(DisplayHandle, hwnd.client_window);
6199                                         hwnd.client_window = hwnd.whole_window;
6200                                 }
6201
6202                                 /* by virtue of the way the tests are ordered when determining if it's PAINT
6203                                    or NCPAINT, client_window == whole_window will always be PAINT.  So, if we're
6204                                    waiting on an nc_expose, drop it and remove the hwnd from the list (unless
6205                                    there's a pending expose). */
6206                                 if (hwnd.nc_expose_pending) {
6207                                         hwnd.nc_expose_pending = false;
6208                                         if (!hwnd.expose_pending)
6209                                                 hwnd.Queue.Paint.Remove (hwnd);
6210                                 }
6211
6212                                 // We are going to be directly mapped by the system tray, so mark as mapped
6213                                 // so we can later properly unmap it.
6214                                 hwnd.mapped = true;
6215
6216                                 size_hints = new XSizeHints();
6217
6218                                 size_hints.flags = (IntPtr)(XSizeHintsFlags.PMinSize | XSizeHintsFlags.PMaxSize | XSizeHintsFlags.PBaseSize);
6219
6220                                 size_hints.min_width = 24;
6221                                 size_hints.min_height = 24;
6222                                 size_hints.max_width = 24;
6223                                 size_hints.max_height = 24;
6224                                 size_hints.base_width = 24;
6225                                 size_hints.base_height = 24;
6226
6227                                 XSetWMNormalHints(DisplayHandle, hwnd.whole_window, ref size_hints);
6228
6229                                 int[] atoms = new int[2];
6230                                 atoms [0] = 1;                  // Version 1
6231                                 atoms [1] = 1;                  // we want to be mapped
6232
6233                                 // This line cost me 3 days...
6234                                 XChangeProperty(DisplayHandle, hwnd.whole_window, _XEMBED_INFO, _XEMBED_INFO, 32, PropertyMode.Replace, atoms, 2);
6235
6236                                 // Need to pick some reasonable defaults
6237                                 tt = new ToolTip();
6238                                 tt.AutomaticDelay = 350;
6239                                 tt.InitialDelay = 250;
6240                                 tt.ReshowDelay = 250;
6241                                 tt.ShowAlways = true;
6242
6243                                 if ((tip != null) && (tip != string.Empty)) {
6244                                         tt.SetToolTip(Control.FromHandle(handle), tip);
6245                                         tt.Active = true;
6246                                 } else {
6247                                         tt.Active = false;
6248                                 }
6249
6250                                 SendNetClientMessage(SystrayMgrWindow, _NET_SYSTEM_TRAY_OPCODE, IntPtr.Zero, (IntPtr)SystrayRequest.SYSTEM_TRAY_REQUEST_DOCK, hwnd.whole_window);
6251
6252                                 return true;
6253                         }
6254                         tt = null;
6255                         return false;
6256                 }
6257
6258                 internal override bool SystrayChange(IntPtr handle, string tip, Icon icon, ref ToolTip tt)
6259                 {
6260                         Control control;
6261
6262                         control = Control.FromHandle(handle);
6263                         if (control != null && tt != null) {
6264                                 tt.SetToolTip(control, tip);
6265                                 tt.Active = true;
6266                                 SendMessage(handle, Msg.WM_PAINT, IntPtr.Zero, IntPtr.Zero);
6267                                 return true;
6268                         } else {
6269                                 return false;
6270                         }
6271                 }
6272
6273                 internal override void SystrayRemove(IntPtr handle, ref ToolTip tt)
6274                 {
6275
6276                         SetVisible (handle, false, false);
6277
6278                         // The caller can now re-dock it later...
6279                         if (tt != null) {
6280                                 tt.Dispose();
6281                                 tt = null;
6282                         }
6283                         // Close any balloon window *we* fired.
6284                         ThemeEngine.Current.HideBalloonWindow (handle);
6285                 }
6286
6287                 internal override void SystrayBalloon(IntPtr handle, int timeout, string title, string text, ToolTipIcon icon)
6288                 {
6289                         ThemeEngine.Current.ShowBalloonWindow (handle, timeout, title, text, icon);
6290                         SendMessage(handle, Msg.WM_USER, IntPtr.Zero, (IntPtr) Msg.NIN_BALLOONSHOW);
6291                 }
6292
6293                 internal override bool Text(IntPtr handle, string text)
6294 {
6295                         Hwnd    hwnd;
6296
6297                         hwnd = Hwnd.ObjectFromHandle(handle);
6298
6299                         lock (XlibLock) {
6300                                 XChangeProperty(DisplayHandle, hwnd.whole_window, _NET_WM_NAME, UTF8_STRING, 8,
6301                                                 PropertyMode.Replace, text, Encoding.UTF8.GetByteCount (text));
6302
6303                                 // XXX this has problems with UTF8.
6304                                 // we need to either use the actual
6305                                 // text if it's latin-1, or convert it
6306                                 // to compound text if it's in a
6307                                 // different charset.
6308                                 XStoreName(DisplayHandle, Hwnd.ObjectFromHandle(handle).whole_window, text);
6309                         }
6310                         return true;
6311                 }
6312
6313                 internal override bool TranslateMessage(ref MSG msg)
6314                 {
6315                         return Keyboard.TranslateMessage (ref msg);
6316                 }
6317
6318                 internal override void UpdateWindow(IntPtr handle)
6319                 {
6320                         Hwnd    hwnd;
6321
6322                         hwnd = Hwnd.ObjectFromHandle(handle);
6323
6324                         if (!hwnd.visible || !hwnd.expose_pending || !hwnd.Mapped) {
6325                                 return;
6326                         }
6327
6328                         SendMessage(handle, Msg.WM_PAINT, IntPtr.Zero, IntPtr.Zero);
6329                         hwnd.Queue.Paint.Remove(hwnd);
6330                 }
6331
6332                 internal override void CreateOffscreenDrawable (IntPtr handle,
6333                                                                 int width, int height,
6334                                                                 out object offscreen_drawable)
6335                 {
6336                         IntPtr root_out;
6337                         int x_out, y_out, width_out, height_out, border_width_out, depth_out;
6338
6339                         XGetGeometry (DisplayHandle, handle,
6340                                       out root_out,
6341                                       out x_out, out y_out,
6342                                       out width_out, out height_out,
6343                                       out border_width_out, out depth_out);
6344
6345                         IntPtr pixmap = XCreatePixmap (DisplayHandle, handle, width, height, depth_out);
6346
6347                         offscreen_drawable = pixmap;
6348
6349                 }
6350
6351                 internal override void DestroyOffscreenDrawable (object offscreen_drawable)
6352                 {
6353                         XFreePixmap (DisplayHandle, (IntPtr)offscreen_drawable);
6354                 }
6355
6356                 internal override Graphics GetOffscreenGraphics (object offscreen_drawable)
6357                 {
6358                         return Graphics.FromHwnd ((IntPtr) offscreen_drawable);
6359                 }
6360
6361                 internal override void BlitFromOffscreen (IntPtr dest_handle,
6362                                                           Graphics dest_dc,
6363                                                           object offscreen_drawable,
6364                                                           Graphics offscreen_dc,
6365                                                           Rectangle r)
6366                 {
6367                         XGCValues gc_values;
6368                         IntPtr gc;
6369
6370                         gc_values = new XGCValues();
6371
6372                         gc = XCreateGC (DisplayHandle, dest_handle, IntPtr.Zero, ref gc_values);
6373
6374                         XCopyArea (DisplayHandle, (IntPtr)offscreen_drawable, dest_handle,
6375                                    gc, r.X, r.Y, r.Width, r.Height, r.X, r.Y);
6376
6377                         XFreeGC (DisplayHandle, gc);
6378                 }
6379
6380                 #endregion      // Public Static Methods
6381
6382                 #region Events
6383                 internal override event EventHandler Idle;
6384                 #endregion      // Events
6385
6386
6387 #if TRACE
6388
6389 #region Xcursor imports
6390                 [DllImport ("libXcursor", EntryPoint = "XcursorLibraryLoadCursor")]
6391                 internal extern static IntPtr XcursorLibraryLoadCursor (IntPtr display, [MarshalAs (UnmanagedType.LPStr)] string name);
6392
6393                 [DllImport ("libXcursor", EntryPoint = "XcursorLibraryLoadImages")]
6394                 internal extern static IntPtr XcursorLibraryLoadImages ([MarshalAs (UnmanagedType.LPStr)] string file, IntPtr theme, int size);
6395
6396                 [DllImport ("libXcursor", EntryPoint = "XcursorImagesDestroy")]
6397                 internal extern static void XcursorImagesDestroy (IntPtr images);
6398
6399                 [DllImport ("libXcursor", EntryPoint = "XcursorGetDefaultSize")]
6400                 internal extern static int XcursorGetDefaultSize (IntPtr display);
6401
6402                 [DllImport ("libXcursor", EntryPoint = "XcursorImageLoadCursor")]
6403                 internal extern static IntPtr XcursorImageLoadCursor (IntPtr display, IntPtr image);
6404
6405                 [DllImport ("libXcursor", EntryPoint = "XcursorGetTheme")]
6406                 internal extern static IntPtr XcursorGetTheme (IntPtr display);
6407 #endregion
6408 #region X11 Imports
6409                 [DllImport ("libX11", EntryPoint="XOpenDisplay")]
6410                 internal extern static IntPtr XOpenDisplay(IntPtr display);
6411                 [DllImport ("libX11", EntryPoint="XCloseDisplay")]
6412                 internal extern static int XCloseDisplay(IntPtr display);
6413                 [DllImport ("libX11", EntryPoint="XSynchronize")]
6414                 internal extern static IntPtr XSynchronize(IntPtr display, bool onoff);
6415
6416                 [DllImport ("libX11", EntryPoint="XCreateWindow")]
6417                 internal extern static IntPtr _XCreateWindow(IntPtr display, IntPtr parent, int x, int y, int width, int height, int border_width, int depth, int xclass, IntPtr visual, UIntPtr valuemask, ref XSetWindowAttributes attributes);
6418                 internal static IntPtr XCreateWindow(IntPtr display, IntPtr parent, int x, int y, int width, int height, int border_width, int depth, int xclass, IntPtr visual, UIntPtr valuemask, ref XSetWindowAttributes attributes)
6419                 {
6420                         DebugHelper.TraceWriteLine ("XCreateWindow");
6421                         return _XCreateWindow(display, parent, x, y, width, height,
6422                                        border_width, depth, xclass, visual, valuemask, ref attributes);
6423                 }
6424                 [DllImport ("libX11", EntryPoint="XCreateSimpleWindow")]
6425                 internal extern static IntPtr _XCreateSimpleWindow(IntPtr display, IntPtr parent, int x, int y, int width, int height, int border_width, UIntPtr border, UIntPtr background);
6426                 internal static IntPtr XCreateSimpleWindow(IntPtr display, IntPtr parent, int x, int y, int width, int height, int border_width, UIntPtr border, UIntPtr background)
6427                 {
6428                         DebugHelper.TraceWriteLine ("XCreateSimpleWindow");
6429                         return _XCreateSimpleWindow(display, parent, x, y, width, height, border_width, border, background);
6430                 }
6431                 [DllImport ("libX11", EntryPoint="XMapWindow")]
6432                 internal extern static int _XMapWindow(IntPtr display, IntPtr window);
6433                 internal static int XMapWindow(IntPtr display, IntPtr window)
6434                 {
6435                         DebugHelper.TraceWriteLine ("XMapWindow");
6436                         return _XMapWindow(display, window);
6437                 }
6438                 [DllImport ("libX11", EntryPoint="XMapRaised")]
6439                 internal extern static int _XMapRaised(IntPtr display, IntPtr window);
6440                 internal static int XMapRaised(IntPtr display, IntPtr window)
6441                 {
6442                         DebugHelper.TraceWriteLine ("XMapRaised");
6443                         return _XMapRaised(display, window);
6444                 }
6445                 [DllImport ("libX11", EntryPoint="XUnmapWindow")]
6446                 internal extern static int _XUnmapWindow(IntPtr display, IntPtr window);
6447                 internal static int XUnmapWindow(IntPtr display, IntPtr window)
6448                 {
6449                         DebugHelper.TraceWriteLine ("XUnmapWindow");
6450                         return _XUnmapWindow(display, window);
6451                 }
6452                 [DllImport ("libX11", EntryPoint="XMapSubwindows")]
6453                 internal extern static int _XMapSubindows(IntPtr display, IntPtr window);
6454                 internal static int XMapSubindows(IntPtr display, IntPtr window)
6455                 {
6456                         DebugHelper.TraceWriteLine ("XMapSubindows");
6457                         return _XMapSubindows(display, window);
6458                 }
6459                 [DllImport ("libX11", EntryPoint="XUnmapSubwindows")]
6460                 internal extern static int _XUnmapSubwindows(IntPtr display, IntPtr window);
6461                 internal static int XUnmapSubwindows(IntPtr display, IntPtr window)
6462                 {
6463                         DebugHelper.TraceWriteLine ("XUnmapSubwindows");
6464                         return _XUnmapSubwindows(display, window);
6465                 }
6466                 [DllImport ("libX11", EntryPoint="XRootWindow")]
6467                 internal extern static IntPtr _XRootWindow(IntPtr display, int screen_number);
6468                 internal static IntPtr XRootWindow(IntPtr display, int screen_number)
6469                 {
6470                         DebugHelper.TraceWriteLine ("XRootWindow");
6471                         return _XRootWindow(display, screen_number);
6472                 }
6473                 [DllImport ("libX11", EntryPoint="XNextEvent")]
6474                 internal extern static IntPtr _XNextEvent(IntPtr display, ref XEvent xevent);
6475                 internal static IntPtr XNextEvent(IntPtr display, ref XEvent xevent)
6476                 {
6477                         DebugHelper.TraceWriteLine ("XNextEvent");
6478                         return _XNextEvent(display, ref xevent);
6479                 }
6480                 [DllImport ("libX11", EntryPoint="XConnectionNumber")]
6481                 internal extern static int _XConnectionNumber (IntPtr display);
6482                 internal static int XConnectionNumber (IntPtr display)
6483                 {
6484                         DebugHelper.TraceWriteLine ("XConnectionNumber");
6485                         return _XConnectionNumber (display);
6486                 }
6487                 [DllImport ("libX11", EntryPoint="XPending")]
6488                 internal extern static int _XPending (IntPtr display);
6489                 internal static int XPending (IntPtr display)
6490                 {
6491                         DebugHelper.TraceWriteLine ("XPending");
6492                         DebugHelper.DumpCallers (3);
6493                         return _XPending (display);
6494                 }
6495                 [DllImport ("libX11", EntryPoint="XSelectInput")]
6496                 internal extern static IntPtr _XSelectInput(IntPtr display, IntPtr window, IntPtr mask);
6497                 internal static IntPtr XSelectInput(IntPtr display, IntPtr window, IntPtr mask)
6498                 {
6499                         DebugHelper.TraceWriteLine ("XSelectInput");
6500                         return _XSelectInput(display, window, mask);
6501                 }
6502
6503                 [DllImport ("libX11", EntryPoint="XDestroyWindow")]
6504                 internal extern static int _XDestroyWindow(IntPtr display, IntPtr window);
6505                 internal static int XDestroyWindow(IntPtr display, IntPtr window)
6506                 {
6507                         DebugHelper.TraceWriteLine ("XDestroyWindow 0x{0:x}", window.ToInt32());
6508                         return _XDestroyWindow(display, window);
6509                 }
6510
6511                 [DllImport ("libX11", EntryPoint="XReparentWindow")]
6512                 internal extern static int _XReparentWindow(IntPtr display, IntPtr window, IntPtr parent, int x, int y);
6513                 internal static int XReparentWindow(IntPtr display, IntPtr window, IntPtr parent, int x, int y)
6514                 {
6515                         DebugHelper.TraceWriteLine ("XReparentWindow");
6516                         return _XReparentWindow(display, window, parent, x, y);
6517                 }
6518
6519                 [DllImport ("libX11", EntryPoint="XMoveResizeWindow")]
6520                 extern static int _XMoveResizeWindow(IntPtr display, IntPtr window, int x, int y, int width, int height);
6521                 static int XMoveResizeWindow(IntPtr display, IntPtr window, int x, int y, int width, int height) {
6522                         DebugHelper.TraceWriteLine ("XMoveResizeWindow");
6523                         return _XMoveResizeWindow(display, window, x, y, width, height);
6524                 }
6525
6526                 internal static int MoveResizeWindow(IntPtr display, IntPtr window, int x, int y, int width, int height)
6527                 {
6528                         int ret = XMoveResizeWindow (display, window, x, y, width, height);
6529                         Keyboard.MoveCurrentCaretPos ();
6530                         return ret;
6531                 }
6532
6533                 [DllImport ("libX11", EntryPoint="XResizeWindow")]
6534                 internal extern static int _XResizeWindow(IntPtr display, IntPtr window, int width, int height);
6535                 internal static int XResizeWindow(IntPtr display, IntPtr window, int width, int height)
6536                 {
6537                         DebugHelper.TraceWriteLine ("XResizeWindow");
6538                         return _XResizeWindow(display, window, width, height);
6539                 }
6540
6541                 [DllImport ("libX11", EntryPoint="XGetWindowAttributes")]
6542                 internal extern static int _XGetWindowAttributes(IntPtr display, IntPtr window, ref XWindowAttributes attributes);
6543                 internal static int XGetWindowAttributes(IntPtr display, IntPtr window, ref XWindowAttributes attributes)
6544                 {
6545                         DebugHelper.TraceWriteLine ("XGetWindowAttributes");
6546                         return _XGetWindowAttributes(display, window, ref attributes);
6547                 }
6548
6549                 [DllImport ("libX11", EntryPoint="XFlush")]
6550                 internal extern static int _XFlush(IntPtr display);
6551                 internal static int XFlush(IntPtr display)
6552                 {
6553                         DebugHelper.TraceWriteLine ("XFlush");
6554                         return _XFlush(display);
6555                 }
6556
6557                 [DllImport ("libX11", EntryPoint="XSetWMName")]
6558                 internal extern static int _XSetWMName(IntPtr display, IntPtr window, ref XTextProperty text_prop);
6559                 internal static int XSetWMName(IntPtr display, IntPtr window, ref XTextProperty text_prop)
6560                 {
6561                         DebugHelper.TraceWriteLine ("XSetWMName");
6562                         return _XSetWMName(display, window, ref text_prop);
6563                 }
6564
6565                 [DllImport ("libX11", EntryPoint="XStoreName")]
6566                 internal extern static int _XStoreName(IntPtr display, IntPtr window, string window_name);
6567                 internal static int XStoreName(IntPtr display, IntPtr window, string window_name)
6568                 {
6569                         DebugHelper.TraceWriteLine ("XStoreName");
6570                         return _XStoreName(display, window, window_name);
6571                 }
6572
6573                 [DllImport ("libX11", EntryPoint="XFetchName")]
6574                 internal extern static int _XFetchName(IntPtr display, IntPtr window, ref IntPtr window_name);
6575                 internal static int XFetchName(IntPtr display, IntPtr window, ref IntPtr window_name)
6576                 {
6577                         DebugHelper.TraceWriteLine ("XFetchName");
6578                         return _XFetchName(display, window, ref window_name);
6579                 }
6580
6581                 [DllImport ("libX11", EntryPoint="XSendEvent")]
6582                 internal extern static int _XSendEvent(IntPtr display, IntPtr window, bool propagate, IntPtr event_mask, ref XEvent send_event);
6583                 internal static int XSendEvent(IntPtr display, IntPtr window, bool propagate, IntPtr event_mask, ref XEvent send_event)
6584                 {
6585                         DebugHelper.TraceWriteLine ("XSendEvent");
6586                         return _XSendEvent(display, window, propagate, event_mask, ref send_event);
6587                 }
6588
6589                 [DllImport ("libX11", EntryPoint="XQueryTree")]
6590                 internal extern static int _XQueryTree(IntPtr display, IntPtr window, out IntPtr root_return, out IntPtr parent_return, out IntPtr children_return, out int nchildren_return);
6591                 internal static int XQueryTree(IntPtr display, IntPtr window, out IntPtr root_return, out IntPtr parent_return, out IntPtr children_return, out int nchildren_return)
6592                 {
6593                         DebugHelper.TraceWriteLine ("XQueryTree");
6594                         return _XQueryTree(display, window, out root_return, out parent_return, out children_return, out nchildren_return);
6595                 }
6596
6597                 [DllImport ("libX11", EntryPoint="XFree")]
6598                 internal extern static int _XFree(IntPtr data);
6599                 internal static int XFree(IntPtr data)
6600                 {
6601                         DebugHelper.TraceWriteLine ("XFree");
6602                         return _XFree(data);
6603                 }
6604
6605                 [DllImport ("libX11", EntryPoint="XRaiseWindow")]
6606                 internal extern static int _XRaiseWindow(IntPtr display, IntPtr window);
6607                 internal static int XRaiseWindow(IntPtr display, IntPtr window)
6608                 {
6609                         DebugHelper.TraceWriteLine ("XRaiseWindow");
6610                         return _XRaiseWindow(display, window);
6611                 }
6612
6613                 [DllImport ("libX11", EntryPoint="XLowerWindow")]
6614                 internal extern static uint _XLowerWindow(IntPtr display, IntPtr window);
6615                 internal static uint XLowerWindow(IntPtr display, IntPtr window)
6616                 {
6617                         DebugHelper.TraceWriteLine ("XLowerWindow");
6618                         return _XLowerWindow(display, window);
6619                 }
6620
6621                 [DllImport ("libX11", EntryPoint="XConfigureWindow")]
6622                 internal extern static uint _XConfigureWindow(IntPtr display, IntPtr window, ChangeWindowFlags value_mask, ref XWindowChanges values);
6623                 internal static uint XConfigureWindow(IntPtr display, IntPtr window, ChangeWindowFlags value_mask, ref XWindowChanges values)
6624                 {
6625                         DebugHelper.TraceWriteLine ("XConfigureWindow");
6626                         return _XConfigureWindow(display, window, value_mask, ref values);
6627                 }
6628
6629                 [DllImport ("libX11", EntryPoint="XInternAtom")]
6630                 internal extern static IntPtr _XInternAtom(IntPtr display, string atom_name, bool only_if_exists);
6631                 internal static IntPtr XInternAtom(IntPtr display, string atom_name, bool only_if_exists)
6632                 {
6633                         DebugHelper.TraceWriteLine ("XInternAtom");
6634                         return _XInternAtom(display, atom_name, only_if_exists);
6635                 }
6636
6637                 [DllImport ("libX11", EntryPoint="XInternAtoms")]
6638                 internal extern static int _XInternAtoms(IntPtr display, string[] atom_names, int atom_count, bool only_if_exists, IntPtr[] atoms);
6639                 internal static int XInternAtoms(IntPtr display, string[] atom_names, int atom_count, bool only_if_exists, IntPtr[] atoms)
6640                 {
6641                         DebugHelper.TraceWriteLine ("XInternAtoms");
6642                         return _XInternAtoms(display, atom_names, atom_count, only_if_exists, atoms);
6643                 }
6644
6645                 [DllImport ("libX11", EntryPoint="XSetWMProtocols")]
6646                 internal extern static int _XSetWMProtocols(IntPtr display, IntPtr window, IntPtr[] protocols, int count);
6647                 internal static int XSetWMProtocols(IntPtr display, IntPtr window, IntPtr[] protocols, int count)
6648                 {
6649                         DebugHelper.TraceWriteLine ("XSetWMProtocols");
6650                         return _XSetWMProtocols(display, window, protocols, count);
6651                 }
6652
6653                 [DllImport ("libX11", EntryPoint="XGrabPointer")]
6654                 internal extern static int _XGrabPointer(IntPtr display, IntPtr window, bool owner_events, EventMask event_mask, GrabMode pointer_mode, GrabMode keyboard_mode, IntPtr confine_to, IntPtr cursor, IntPtr timestamp);
6655                 internal static int XGrabPointer(IntPtr display, IntPtr window, bool owner_events, EventMask event_mask, GrabMode pointer_mode, GrabMode keyboard_mode, IntPtr confine_to, IntPtr cursor, IntPtr timestamp)
6656                 {
6657                         DebugHelper.TraceWriteLine ("XGrabPointer");
6658                         return _XGrabPointer(display, window, owner_events, event_mask, pointer_mode, keyboard_mode, confine_to, cursor, timestamp);
6659                 }
6660
6661                 [DllImport ("libX11", EntryPoint="XUngrabPointer")]
6662                 internal extern static int _XUngrabPointer(IntPtr display, IntPtr timestamp);
6663                 internal static int XUngrabPointer(IntPtr display, IntPtr timestamp)
6664                 {
6665                         DebugHelper.TraceWriteLine ("XUngrabPointer");
6666                         return _XUngrabPointer(display, timestamp);
6667                 }
6668
6669                 [DllImport ("libX11", EntryPoint="XQueryPointer")]
6670                 internal extern static bool _XQueryPointer(IntPtr display, IntPtr window, out IntPtr root, out IntPtr child, out int root_x, out int root_y, out int win_x, out int win_y, out int keys_buttons);
6671                 internal static bool XQueryPointer(IntPtr display, IntPtr window, out IntPtr root, out IntPtr child, out int root_x, out int root_y, out int win_x, out int win_y, out int keys_buttons)
6672                 {
6673                         DebugHelper.TraceWriteLine ("XQueryPointer");
6674                         return _XQueryPointer(display, window, out root, out child, out root_x, out root_y, out win_x, out win_y, out keys_buttons);
6675                 }
6676
6677                 [DllImport ("libX11", EntryPoint="XTranslateCoordinates")]
6678                 internal extern static bool _XTranslateCoordinates (IntPtr display, IntPtr src_w, IntPtr dest_w, int src_x, int src_y, out int intdest_x_return, out int dest_y_return, out IntPtr child_return);
6679                 internal static bool XTranslateCoordinates (IntPtr display, IntPtr src_w, IntPtr dest_w, int src_x, int src_y, out int intdest_x_return,         out int dest_y_return, out IntPtr child_return)
6680                 {
6681                         DebugHelper.TraceWriteLine ("XTranslateCoordinates");
6682                         return _XTranslateCoordinates (display, src_w, dest_w, src_x, src_y, out intdest_x_return, out dest_y_return, out child_return);
6683                 }
6684
6685                 [DllImport ("libX11", EntryPoint="XGetGeometry")]
6686                 internal extern static bool _XGetGeometry(IntPtr display, IntPtr window, out IntPtr root, out int x, out int y, out int width, out int height, out int border_width, out int depth);
6687                 internal static bool XGetGeometry(IntPtr display, IntPtr window, out IntPtr root, out int x, out int y, out int width, out int height, out int border_width, out int depth)
6688                 {
6689                         DebugHelper.TraceWriteLine ("XGetGeometry");
6690                         return _XGetGeometry(display, window, out root, out x, out y, out width, out height, out border_width, out depth);
6691                 }
6692
6693                 [DllImport ("libX11", EntryPoint="XGetGeometry")]
6694                 internal extern static bool _XGetGeometry(IntPtr display, IntPtr window, IntPtr root, out int x, out int y, out int width, out int height, IntPtr border_width, IntPtr depth);
6695                 internal static bool XGetGeometry(IntPtr display, IntPtr window, IntPtr root, out int x, out int y, out int width, out int height, IntPtr border_width, IntPtr depth)
6696                 {
6697                         DebugHelper.TraceWriteLine ("XGetGeometry");
6698                         return _XGetGeometry(display, window, root, out x, out y, out width, out height, border_width, depth);
6699                 }
6700
6701                 [DllImport ("libX11", EntryPoint="XGetGeometry")]
6702                 internal extern static bool _XGetGeometry(IntPtr display, IntPtr window, IntPtr root, out int x, out int y, IntPtr width, IntPtr height, IntPtr border_width, IntPtr depth);
6703                 internal static bool XGetGeometry(IntPtr display, IntPtr window, IntPtr root, out int x, out int y, IntPtr width, IntPtr height, IntPtr border_width, IntPtr depth)
6704                 {
6705                         DebugHelper.TraceWriteLine ("XGetGeometry");
6706                         return _XGetGeometry(display, window, root, out x, out y, width, height, border_width, depth);
6707                 }
6708
6709                 [DllImport ("libX11", EntryPoint="XGetGeometry")]
6710                 internal extern static bool _XGetGeometry(IntPtr display, IntPtr window, IntPtr root, IntPtr x, IntPtr y, out int width, out int height, IntPtr border_width, IntPtr depth);
6711                 internal static bool XGetGeometry(IntPtr display, IntPtr window, IntPtr root, IntPtr x, IntPtr y, out int width, out int height, IntPtr border_width, IntPtr depth)
6712                 {
6713                         DebugHelper.TraceWriteLine ("XGetGeometry");
6714                         return _XGetGeometry(display, window, root, x, y, out width, out height, border_width, depth);
6715                 }
6716
6717                 [DllImport ("libX11", EntryPoint="XWarpPointer")]
6718                 internal extern static uint _XWarpPointer(IntPtr display, IntPtr src_w, IntPtr dest_w, int src_x, int src_y, uint src_width, uint src_height, int dest_x, int dest_y);
6719                 internal static uint XWarpPointer(IntPtr display, IntPtr src_w, IntPtr dest_w, int src_x, int src_y, uint src_width, uint src_height, int dest_x, int dest_y)
6720                 {
6721                         DebugHelper.TraceWriteLine ("XWarpPointer");
6722                         return _XWarpPointer(display, src_w, dest_w, src_x, src_y, src_width, src_height, dest_x, dest_y);
6723                 }
6724
6725                 [DllImport ("libX11", EntryPoint="XClearWindow")]
6726                 internal extern static int _XClearWindow(IntPtr display, IntPtr window);
6727                 internal static int XClearWindow(IntPtr display, IntPtr window)
6728                 {
6729                         DebugHelper.TraceWriteLine ("XClearWindow");
6730                         return _XClearWindow(display, window);
6731                 }
6732
6733                 [DllImport ("libX11", EntryPoint="XClearArea")]
6734                 internal extern static int _XClearArea(IntPtr display, IntPtr window, int x, int y, int width, int height, bool exposures);
6735                 internal static int XClearArea(IntPtr display, IntPtr window, int x, int y, int width, int height, bool exposures)
6736                 {
6737                         DebugHelper.TraceWriteLine ("XClearArea");
6738                         return _XClearArea(display, window, x, y, width, height, exposures);
6739                 }
6740
6741                 // Colormaps
6742                 [DllImport ("libX11", EntryPoint="XDefaultScreenOfDisplay")]
6743                 internal extern static IntPtr _XDefaultScreenOfDisplay(IntPtr display);
6744                 internal static IntPtr XDefaultScreenOfDisplay(IntPtr display)
6745                 {
6746                         DebugHelper.TraceWriteLine ("XDefaultScreenOfDisplay");
6747                         return _XDefaultScreenOfDisplay(display);
6748                 }
6749
6750                 [DllImport ("libX11", EntryPoint="XScreenNumberOfScreen")]
6751                 internal extern static int _XScreenNumberOfScreen(IntPtr display, IntPtr Screen);
6752                 internal static int XDefaultScreenOfDisplay(IntPtr display, IntPtr Screen)
6753                 {
6754                         DebugHelper.TraceWriteLine ("XDefaultScreenOfDisplay");
6755                         return _XScreenNumberOfScreen(display, Screen);
6756                 }
6757
6758                 [DllImport ("libX11", EntryPoint="XDefaultVisual")]
6759                 internal extern static IntPtr _XDefaultVisual(IntPtr display, int screen_number);
6760                 internal static IntPtr XDefaultScreenOfDisplay(IntPtr display, int screen_number)
6761                 {
6762                         DebugHelper.TraceWriteLine ("XDefaultScreenOfDisplay");
6763                         return _XDefaultVisual(display, screen_number);
6764                 }
6765
6766                 [DllImport ("libX11", EntryPoint="XDefaultDepth")]
6767                 internal extern static uint _XDefaultDepth(IntPtr display, int screen_number);
6768                 internal static uint XDefaultDepth(IntPtr display, int screen_number)
6769                 {
6770                         DebugHelper.TraceWriteLine ("XDefaultDepth");
6771                         return _XDefaultDepth(display, screen_number);
6772                 }
6773
6774                 [DllImport ("libX11", EntryPoint="XDefaultScreen")]
6775                 internal extern static int _XDefaultScreen(IntPtr display);
6776                 internal static int XDefaultScreen(IntPtr display)
6777                 {
6778                         DebugHelper.TraceWriteLine ("XDefaultScreen");
6779                         return _XDefaultScreen(display);
6780                 }
6781
6782                 [DllImport ("libX11", EntryPoint="XDefaultColormap")]
6783                 internal extern static IntPtr _XDefaultColormap(IntPtr display, int screen_number);
6784                 internal static IntPtr XDefaultColormap(IntPtr display, int screen_number)
6785                 {
6786                         DebugHelper.TraceWriteLine ("XDefaultColormap");
6787                         return _XDefaultColormap(display, screen_number);
6788                 }
6789
6790                 [DllImport ("libX11", EntryPoint="XLookupColor")]
6791                 internal extern static int _XLookupColor(IntPtr display, IntPtr Colormap, string Coloranem, ref XColor exact_def_color, ref XColor screen_def_color);
6792                 internal static int XLookupColor(IntPtr display, IntPtr Colormap, string Coloranem, ref XColor exact_def_color, ref XColor screen_def_color)
6793                 {
6794                         DebugHelper.TraceWriteLine ("XLookupColor");
6795                         return _XLookupColor(display, Colormap, Coloranem, ref exact_def_color, ref screen_def_color);
6796                 }
6797
6798                 [DllImport ("libX11", EntryPoint="XAllocColor")]
6799                 internal extern static int _XAllocColor(IntPtr display, IntPtr Colormap, ref XColor colorcell_def);
6800                 internal static int XAllocColor(IntPtr display, IntPtr Colormap, ref XColor colorcell_def)
6801                 {
6802                         DebugHelper.TraceWriteLine ("XAllocColor");
6803                         return _XAllocColor(display, Colormap, ref colorcell_def);
6804                 }
6805
6806                 [DllImport ("libX11", EntryPoint="XSetTransientForHint")]
6807                 internal extern static int _XSetTransientForHint(IntPtr display, IntPtr window, IntPtr prop_window);
6808                 internal static int XSetTransientForHint(IntPtr display, IntPtr window, IntPtr prop_window)
6809                 {
6810                         DebugHelper.TraceWriteLine ("XSetTransientForHint");
6811                         return _XSetTransientForHint(display, window, prop_window);
6812                 }
6813
6814                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
6815                 internal extern static int _XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref MotifWmHints data, int nelements);
6816                 internal static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref MotifWmHints data, int nelements)
6817                 {
6818                         DebugHelper.TraceWriteLine ("XChangeProperty");
6819                         return _XChangeProperty(display, window, property, type, format, mode, ref data, nelements);
6820                 }
6821
6822                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
6823                 internal extern static int _XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref uint value, int nelements);
6824                 internal static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref uint value, int nelements)
6825                 {
6826                         DebugHelper.TraceWriteLine ("XChangeProperty");
6827                         return _XChangeProperty(display, window, property, type, format, mode, ref value, nelements);
6828                 }
6829
6830                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
6831                 internal extern static int _XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref IntPtr value, int nelements);
6832                 internal static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref IntPtr value, int nelements)
6833                 {
6834                         DebugHelper.TraceWriteLine ("XChangeProperty");
6835                         return _XChangeProperty(display, window, property, type, format, mode, ref value, nelements);
6836                 }
6837
6838                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
6839                 internal extern static int _XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, uint[] data, int nelements);
6840                 internal static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, uint[] data, int nelements)
6841                 {
6842                         DebugHelper.TraceWriteLine ("XChangeProperty");
6843                         return _XChangeProperty(display, window, property, type, format, mode, data, nelements);
6844                 }
6845
6846                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
6847                 internal extern static int _XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, int[] data, int nelements);
6848                 internal static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, int[] data, int nelements)
6849                 {
6850                         DebugHelper.TraceWriteLine ("XChangeProperty");
6851                         return _XChangeProperty(display, window, property, type, format, mode, data, nelements);
6852                 }
6853
6854                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
6855                 internal extern static int _XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, IntPtr[] data, int nelements);
6856                 internal static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, IntPtr[] data, int nelements)
6857                 {
6858                         DebugHelper.TraceWriteLine ("XChangeProperty");
6859                         return _XChangeProperty(display, window, property, type, format, mode, data, nelements);
6860                 }
6861
6862                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
6863                 internal extern static int _XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, IntPtr atoms, int nelements);
6864                 internal static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, IntPtr atoms, int nelements)
6865                 {
6866                         DebugHelper.TraceWriteLine ("XChangeProperty");
6867                         return _XChangeProperty(display, window, property, type, format, mode, atoms, nelements);
6868                 }
6869
6870                 [DllImport ("libX11", EntryPoint="XChangeProperty", CharSet=CharSet.Ansi)]
6871                 internal extern static int _XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, string text, int text_length);
6872                 internal static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, string text, int text_length)
6873                 {
6874                         DebugHelper.TraceWriteLine ("XChangeProperty");
6875                         return _XChangeProperty(display, window, property, type, format, mode, text, text_length);
6876                 }
6877
6878                 [DllImport ("libX11", EntryPoint="XDeleteProperty")]
6879                 internal extern static int _XDeleteProperty(IntPtr display, IntPtr window, IntPtr property);
6880                 internal static int XDeleteProperty(IntPtr display, IntPtr window, IntPtr property)
6881                 {
6882                         DebugHelper.TraceWriteLine ("XDeleteProperty");
6883                         return _XDeleteProperty(display, window, property);
6884                 }
6885
6886                 // Drawing
6887                 [DllImport ("libX11", EntryPoint="XCreateGC")]
6888                 internal extern static IntPtr _XCreateGC(IntPtr display, IntPtr window, IntPtr valuemask, ref XGCValues values);
6889                 internal static IntPtr XCreateGC(IntPtr display, IntPtr window, IntPtr valuemask, ref XGCValues values)
6890                 {
6891                         DebugHelper.TraceWriteLine ("XCreateGC");
6892                         return _XCreateGC(display, window, valuemask, ref values);
6893                 }
6894
6895                 [DllImport ("libX11", EntryPoint="XFreeGC")]
6896                 internal extern static int _XFreeGC(IntPtr display, IntPtr gc);
6897                 internal static int XFreeGC(IntPtr display, IntPtr gc)
6898                 {
6899                         DebugHelper.TraceWriteLine ("XFreeGC");
6900                         return _XFreeGC(display, gc);
6901                 }
6902
6903                 [DllImport ("libX11", EntryPoint="XSetFunction")]
6904                 internal extern static int _XSetFunction(IntPtr display, IntPtr gc, GXFunction function);
6905                 internal static int XSetFunction(IntPtr display, IntPtr gc, GXFunction function)
6906                 {
6907                         DebugHelper.TraceWriteLine ("XSetFunction");
6908                         return _XSetFunction(display, gc, function);
6909                 }
6910
6911                 [DllImport ("libX11", EntryPoint="XSetLineAttributes")]
6912                 internal extern static int _XSetLineAttributes(IntPtr display, IntPtr gc, int line_width, GCLineStyle line_style, GCCapStyle cap_style, GCJoinStyle join_style);
6913                 internal static int XSetLineAttributes(IntPtr display, IntPtr gc, int line_width, GCLineStyle line_style, GCCapStyle cap_style, GCJoinStyle join_style)
6914                 {
6915                         DebugHelper.TraceWriteLine ("XSetLineAttributes");
6916                         return _XSetLineAttributes(display, gc, line_width, line_style, cap_style, join_style);
6917                 }
6918
6919                 [DllImport ("libX11", EntryPoint="XDrawLine")]
6920                 internal extern static int _XDrawLine(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int x2, int y2);
6921                 internal static int XDrawLine(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int x2, int y2)
6922                 {
6923                         DebugHelper.TraceWriteLine ("XDrawLine");
6924                         return _XDrawLine(display, drawable, gc, x1, y1, x2, y2);
6925                 }
6926
6927                 [DllImport ("libX11", EntryPoint="XDrawRectangle")]
6928                 internal extern static int _XDrawRectangle(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int width, int height);
6929                 internal static int XDrawRectangle(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int width, int height)
6930                 {
6931                         DebugHelper.TraceWriteLine ("XDrawRectangle");
6932                         return _XDrawRectangle(display, drawable, gc, x1, y1, width, height);
6933                 }
6934
6935                 [DllImport ("libX11", EntryPoint="XFillRectangle")]
6936                 internal extern static int _XFillRectangle(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int width, int height);
6937                 internal static int XFillRectangle(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int width, int height)
6938                 {
6939                         DebugHelper.TraceWriteLine ("XFillRectangle");
6940                         return _XFillRectangle(display, drawable, gc, x1, y1, width, height);
6941                 }
6942
6943                 [DllImport ("libX11", EntryPoint="XSetWindowBackground")]
6944                 internal extern static int _XSetWindowBackground(IntPtr display, IntPtr window, IntPtr background);
6945                 internal static int XSetWindowBackground(IntPtr display, IntPtr window, IntPtr background)
6946                 {
6947                         DebugHelper.TraceWriteLine ("XSetWindowBackground");
6948                         return _XSetWindowBackground(display, window, background);
6949                 }
6950
6951                 [DllImport ("libX11", EntryPoint="XCopyArea")]
6952                 internal extern static int _XCopyArea(IntPtr display, IntPtr src, IntPtr dest, IntPtr gc, int src_x, int src_y, int width, int height, int dest_x, int dest_y);
6953                 internal static int XCopyArea(IntPtr display, IntPtr src, IntPtr dest, IntPtr gc, int src_x, int src_y, int width, int height, int dest_x, int dest_y)
6954                 {
6955                         DebugHelper.TraceWriteLine ("XCopyArea");
6956                         return _XCopyArea(display, src, dest, gc, src_x, src_y, width, height, dest_x, dest_y);
6957                 }
6958
6959                 [DllImport ("libX11", EntryPoint="XGetWindowProperty")]
6960                 internal extern static int _XGetWindowProperty(IntPtr display, IntPtr window, IntPtr atom, IntPtr long_offset, IntPtr long_length, bool delete, IntPtr req_type, out IntPtr actual_type, out int actual_format, out IntPtr nitems, out IntPtr bytes_after, ref IntPtr prop);
6961                 internal static int XGetWindowProperty(IntPtr display, IntPtr window, IntPtr atom, IntPtr long_offset, IntPtr long_length, bool delete, IntPtr req_type, out IntPtr actual_type, out int actual_format, out IntPtr nitems, out IntPtr bytes_after, ref IntPtr prop)
6962                 {
6963                         DebugHelper.TraceWriteLine ("XGetWindowProperty");
6964                         return _XGetWindowProperty(display, window, atom, long_offset, long_length, delete, req_type, out actual_type, out actual_format, out nitems, out bytes_after, ref prop);
6965                 }
6966
6967                 [DllImport ("libX11", EntryPoint="XSetInputFocus")]
6968                 internal extern static int _XSetInputFocus(IntPtr display, IntPtr window, RevertTo revert_to, IntPtr time);
6969                 internal static int XSetInputFocus(IntPtr display, IntPtr window, RevertTo revert_to, IntPtr time)
6970                 {
6971                         DebugHelper.TraceWriteLine ("XSetInputFocus");
6972                         return _XSetInputFocus(display, window, revert_to, time);
6973                 }
6974
6975                 [DllImport ("libX11", EntryPoint="XIconifyWindow")]
6976                 internal extern static int _XIconifyWindow(IntPtr display, IntPtr window, int screen_number);
6977                 internal static int XIconifyWindow(IntPtr display, IntPtr window, int screen_number)
6978                 {
6979                         DebugHelper.TraceWriteLine ("XIconifyWindow");
6980                         return _XIconifyWindow(display, window, screen_number);
6981                 }
6982
6983                 [DllImport ("libX11", EntryPoint="XDefineCursor")]
6984                 internal extern static int _XDefineCursor(IntPtr display, IntPtr window, IntPtr cursor);
6985                 internal static int XDefineCursor(IntPtr display, IntPtr window, IntPtr cursor)
6986                 {
6987                         DebugHelper.TraceWriteLine ("XDefineCursor");
6988                         return _XDefineCursor(display, window, cursor);
6989                 }
6990
6991                 [DllImport ("libX11", EntryPoint="XUndefineCursor")]
6992                 internal extern static int _XUndefineCursor(IntPtr display, IntPtr window);
6993                 internal static int XUndefineCursor(IntPtr display, IntPtr window)
6994                 {
6995                         DebugHelper.TraceWriteLine ("XUndefineCursor");
6996                         return _XUndefineCursor(display, window);
6997                 }
6998
6999                 [DllImport ("libX11", EntryPoint="XFreeCursor")]
7000                 internal extern static int _XFreeCursor(IntPtr display, IntPtr cursor);
7001                 internal static int XFreeCursor(IntPtr display, IntPtr cursor)
7002                 {
7003                         DebugHelper.TraceWriteLine ("XFreeCursor");
7004                         return _XFreeCursor(display, cursor);
7005                 }
7006
7007                 [DllImport ("libX11", EntryPoint="XCreateFontCursor")]
7008                 internal extern static IntPtr _XCreateFontCursor(IntPtr display, CursorFontShape shape);
7009                 internal static IntPtr XCreateFontCursor(IntPtr display, CursorFontShape shape)
7010                 {
7011                         DebugHelper.TraceWriteLine ("XCreateFontCursor");
7012                         return _XCreateFontCursor(display, shape);
7013                 }
7014
7015                 [DllImport ("libX11", EntryPoint="XCreatePixmapCursor")]
7016                 internal extern static IntPtr _XCreatePixmapCursor(IntPtr display, IntPtr source, IntPtr mask, ref XColor foreground_color, ref XColor background_color, int x_hot, int y_hot);
7017                 internal static IntPtr XCreatePixmapCursor(IntPtr display, IntPtr source, IntPtr mask, ref XColor foreground_color, ref XColor background_color, int x_hot, int y_hot)
7018                 {
7019                         DebugHelper.TraceWriteLine ("XCreatePixmapCursor");
7020                         return _XCreatePixmapCursor(display, source, mask, ref foreground_color, ref background_color, x_hot, y_hot);
7021                 }
7022
7023                 [DllImport ("libX11", EntryPoint="XCreatePixmapFromBitmapData")]
7024                 internal extern static IntPtr _XCreatePixmapFromBitmapData(IntPtr display, IntPtr drawable, byte[] data, int width, int height, IntPtr fg, IntPtr bg, int depth);
7025                 internal static IntPtr XCreatePixmapFromBitmapData(IntPtr display, IntPtr drawable, byte[] data, int width, int height, IntPtr fg, IntPtr bg, int depth)
7026                 {
7027                         DebugHelper.TraceWriteLine ("XCreatePixmapFromBitmapData");
7028                         return _XCreatePixmapFromBitmapData(display, drawable, data, width, height, fg, bg, depth);
7029                 }
7030
7031                 [DllImport ("libX11", EntryPoint="XCreatePixmap")]
7032                 internal extern static IntPtr _XCreatePixmap(IntPtr display, IntPtr d, int width, int height, int depth);
7033                 internal static IntPtr XCreatePixmap(IntPtr display, IntPtr d, int width, int height, int depth)
7034                 {
7035                         DebugHelper.TraceWriteLine ("XCreatePixmap");
7036                         return _XCreatePixmap(display, d, width, height, depth);
7037                 }
7038
7039                 [DllImport ("libX11", EntryPoint="XFreePixmap")]
7040                 internal extern static IntPtr _XFreePixmap(IntPtr display, IntPtr pixmap);
7041                 internal static IntPtr XFreePixmap(IntPtr display, IntPtr pixmap)
7042                 {
7043                         DebugHelper.TraceWriteLine ("XFreePixmap");
7044                         return _XFreePixmap(display, pixmap);
7045                 }
7046
7047                 [DllImport ("libX11", EntryPoint="XQueryBestCursor")]
7048                 internal extern static int _XQueryBestCursor(IntPtr display, IntPtr drawable, int width, int height, out int best_width, out int best_height);
7049                 internal static int XQueryBestCursor(IntPtr display, IntPtr drawable, int width, int height, out int best_width, out int best_height)
7050                 {
7051                         DebugHelper.TraceWriteLine ("XQueryBestCursor");
7052                         return _XQueryBestCursor(display, drawable, width, height, out best_width, out best_height);
7053                 }
7054
7055                 [DllImport ("libX11", EntryPoint="XQueryExtension")]
7056                 internal extern static int _XQueryExtension(IntPtr display, string extension_name, ref int major, ref int first_event, ref int first_error);
7057                 internal static int XQueryExtension(IntPtr display, string extension_name, ref int major, ref int first_event, ref int first_error)
7058                 {
7059                         DebugHelper.TraceWriteLine ("XQueryExtension");
7060                         return _XQueryExtension(display, extension_name, ref major, ref first_event, ref first_error);
7061                 }
7062
7063                 [DllImport ("libX11", EntryPoint="XWhitePixel")]
7064                 internal extern static IntPtr _XWhitePixel(IntPtr display, int screen_no);
7065                 internal static IntPtr XWhitePixel(IntPtr display, int screen_no)
7066                 {
7067                         DebugHelper.TraceWriteLine ("XWhitePixel");
7068                         return _XWhitePixel(display, screen_no);
7069                 }
7070
7071                 [DllImport ("libX11", EntryPoint="XBlackPixel")]
7072                 internal extern static IntPtr _XBlackPixel(IntPtr display, int screen_no);
7073                 internal static IntPtr XBlackPixel(IntPtr display, int screen_no)
7074                 {
7075                         DebugHelper.TraceWriteLine ("XBlackPixel");
7076                         return _XBlackPixel(display, screen_no);
7077                 }
7078
7079                 [DllImport ("libX11", EntryPoint="XGrabServer")]
7080                 internal extern static void _XGrabServer(IntPtr display);
7081                 internal static void XGrabServer(IntPtr display)
7082                 {
7083                         DebugHelper.TraceWriteLine ("XGrabServer");
7084                         _XGrabServer(display);
7085                 }
7086
7087                 [DllImport ("libX11", EntryPoint="XUngrabServer")]
7088                 internal extern static void _XUngrabServer(IntPtr display);
7089                 internal static void XUngrabServer(IntPtr display)
7090                 {
7091                         DebugHelper.TraceWriteLine ("XUngrabServer");
7092                         _XUngrabServer(display);
7093                 }
7094
7095                 [DllImport ("libX11", EntryPoint="XGetWMNormalHints")]
7096                 internal extern static void _XGetWMNormalHints(IntPtr display, IntPtr window, ref XSizeHints hints, out IntPtr supplied_return);
7097                 internal static void XGetWMNormalHints(IntPtr display, IntPtr window, ref XSizeHints hints, out IntPtr supplied_return)
7098                 {
7099                         DebugHelper.TraceWriteLine ("XGetWMNormalHints");
7100                         _XGetWMNormalHints(display, window, ref hints, out supplied_return);
7101                 }
7102
7103                 [DllImport ("libX11", EntryPoint="XSetWMNormalHints")]
7104                 internal extern static void _XSetWMNormalHints(IntPtr display, IntPtr window, ref XSizeHints hints);
7105                 internal static void XSetWMNormalHints(IntPtr display, IntPtr window, ref XSizeHints hints)
7106                 {
7107                         DebugHelper.TraceWriteLine ("XSetWMNormalHints");
7108                         _XSetWMNormalHints(display, window, ref hints);
7109                 }
7110
7111                 [DllImport ("libX11", EntryPoint="XSetZoomHints")]
7112                 internal extern static void _XSetZoomHints(IntPtr display, IntPtr window, ref XSizeHints hints);
7113                 internal static void XSetZoomHints(IntPtr display, IntPtr window, ref XSizeHints hints)
7114                 {
7115                         DebugHelper.TraceWriteLine ("XSetZoomHints");
7116                         _XSetZoomHints(display, window, ref hints);
7117                 }
7118
7119                 [DllImport ("libX11", EntryPoint="XSetWMHints")]
7120                 internal extern static void _XSetWMHints(IntPtr display, IntPtr window, ref XWMHints wmhints);
7121                 internal static void XSetWMHints(IntPtr display, IntPtr window, ref XWMHints wmhints)
7122                 {
7123                         DebugHelper.TraceWriteLine ("XSetWMHints");
7124                         _XSetWMHints(display, window, ref wmhints);
7125                 }
7126
7127                 [DllImport ("libX11", EntryPoint="XGetIconSizes")]
7128                 internal extern static int _XGetIconSizes(IntPtr display, IntPtr window, out IntPtr size_list, out int count);
7129                 internal static int XGetIconSizes(IntPtr display, IntPtr window, out IntPtr size_list, out int count)
7130                 {
7131                         DebugHelper.TraceWriteLine ("XGetIconSizes");
7132                         return _XGetIconSizes(display, window, out size_list, out count);
7133                 }
7134
7135                 [DllImport ("libX11", EntryPoint="XSetErrorHandler")]
7136                 internal extern static IntPtr _XSetErrorHandler(XErrorHandler error_handler);
7137                 internal static IntPtr XSetErrorHandler(XErrorHandler error_handler)
7138                 {
7139                         DebugHelper.TraceWriteLine ("XSetErrorHandler");
7140                         return _XSetErrorHandler(error_handler);
7141                 }
7142
7143                 [DllImport ("libX11", EntryPoint="XGetErrorText")]
7144                 internal extern static IntPtr _XGetErrorText(IntPtr display, byte code, StringBuilder buffer, int length);
7145                 internal static IntPtr XGetErrorText(IntPtr display, byte code, StringBuilder buffer, int length)
7146                 {
7147                         DebugHelper.TraceWriteLine ("XGetErrorText");
7148                         return _XGetErrorText(display, code, buffer, length);
7149                 }
7150
7151                 [DllImport ("libX11", EntryPoint="XInitThreads")]
7152                 internal extern static int _XInitThreads();
7153                 internal static int XInitThreads()
7154                 {
7155                         DebugHelper.TraceWriteLine ("XInitThreads");
7156                         return _XInitThreads();
7157                 }
7158
7159                 [DllImport ("libX11", EntryPoint="XConvertSelection")]
7160                 internal extern static int _XConvertSelection(IntPtr display, IntPtr selection, IntPtr target, IntPtr property, IntPtr requestor, IntPtr time);
7161                 internal static int XConvertSelection(IntPtr display, IntPtr selection, IntPtr target, IntPtr property, IntPtr requestor, IntPtr time)
7162                 {
7163                         DebugHelper.TraceWriteLine ("XConvertSelection");
7164                         return _XConvertSelection(display, selection, target, property, requestor, time);
7165                 }
7166
7167                 [DllImport ("libX11", EntryPoint="XGetSelectionOwner")]
7168                 internal extern static IntPtr _XGetSelectionOwner(IntPtr display, IntPtr selection);
7169                 internal static IntPtr XGetSelectionOwner(IntPtr display, IntPtr selection)
7170                 {
7171                         DebugHelper.TraceWriteLine ("XGetSelectionOwner");
7172                         return _XGetSelectionOwner(display, selection);
7173                 }
7174
7175                 [DllImport ("libX11", EntryPoint="XSetSelectionOwner")]
7176                 internal extern static int _XSetSelectionOwner(IntPtr display, IntPtr selection, IntPtr owner, IntPtr time);
7177                 internal static int XSetSelectionOwner(IntPtr display, IntPtr selection, IntPtr owner, IntPtr time)
7178                 {
7179                         DebugHelper.TraceWriteLine ("XSetSelectionOwner");
7180                         return _XSetSelectionOwner(display, selection, owner, time);
7181                 }
7182
7183                 [DllImport ("libX11", EntryPoint="XSetPlaneMask")]
7184                 internal extern static int _XSetPlaneMask(IntPtr display, IntPtr gc, IntPtr mask);
7185                 internal static int XSetPlaneMask(IntPtr display, IntPtr gc, IntPtr mask)
7186                 {
7187                         DebugHelper.TraceWriteLine ("XSetPlaneMask");
7188                         return _XSetPlaneMask(display, gc, mask);
7189                 }
7190
7191                 [DllImport ("libX11", EntryPoint="XSetForeground")]
7192                 internal extern static int _XSetForeground(IntPtr display, IntPtr gc, UIntPtr foreground);
7193                 internal static int XSetForeground(IntPtr display, IntPtr gc, UIntPtr foreground)
7194                 {
7195                         DebugHelper.TraceWriteLine ("XSetForeground");
7196                         return _XSetForeground(display, gc, foreground);
7197                 }
7198
7199                 [DllImport ("libX11", EntryPoint="XSetBackground")]
7200                 internal extern static int _XSetBackground(IntPtr display, IntPtr gc, UIntPtr background);
7201                 internal static int XSetBackground(IntPtr display, IntPtr gc, UIntPtr background)
7202                 {
7203                         DebugHelper.TraceWriteLine ("XSetBackground");
7204                         return _XSetBackground(display, gc, background);
7205                 }
7206
7207                 [DllImport ("libX11", EntryPoint="XBell")]
7208                 internal extern static int _XBell(IntPtr display, int percent);
7209                 internal static int XBell(IntPtr display, int percent)
7210                 {
7211                         DebugHelper.TraceWriteLine ("XBell");
7212                         return _XBell(display, percent);
7213                 }
7214
7215                 [DllImport ("libX11", EntryPoint="XChangeActivePointerGrab")]
7216                 internal extern static int _XChangeActivePointerGrab (IntPtr display, EventMask event_mask, IntPtr cursor, IntPtr time);
7217                 internal static int XChangeActivePointerGrab (IntPtr display, EventMask event_mask, IntPtr cursor, IntPtr time)
7218                 {
7219                         DebugHelper.TraceWriteLine ("XChangeActivePointerGrab");
7220                         return _XChangeActivePointerGrab (display, event_mask, cursor, time);
7221                 }
7222
7223                 [DllImport ("libX11", EntryPoint="XFilterEvent")]
7224                 internal extern static bool _XFilterEvent(ref XEvent xevent, IntPtr window);
7225                 internal static bool XFilterEvent(ref XEvent xevent, IntPtr window)
7226                 {
7227                         DebugHelper.TraceWriteLine ("XFilterEvent");
7228                         return _XFilterEvent(ref xevent, window);
7229                 }
7230
7231                 [DllImport ("libX11", EntryPoint="XkbSetDetectableAutoRepeat")]
7232                 internal extern static void _XkbSetDetectableAutoRepeat (IntPtr display, bool detectable, IntPtr supported);
7233                 internal static void XkbSetDetectableAutoRepeat (IntPtr display, bool detectable, IntPtr supported)
7234                 {
7235                         DebugHelper.TraceWriteLine ("XkbSetDetectableAutoRepeat");
7236                         _XkbSetDetectableAutoRepeat (display, detectable, supported);
7237                 }
7238
7239                 [DllImport ("libX11", EntryPoint="XPeekEvent")]
7240                 internal extern static void _XPeekEvent (IntPtr display, ref XEvent xevent);
7241                 internal static void XPeekEvent (IntPtr display, ref XEvent xevent)
7242                 {
7243                         DebugHelper.TraceWriteLine ("XPeekEvent");
7244                         _XPeekEvent (display, ref xevent);
7245                 }
7246
7247                 [DllImport ("libX11", EntryPoint="XIfEvent")]
7248                 internal extern static void _XIfEvent (IntPtr display, ref XEvent xevent, Delegate event_predicate, IntPtr arg);
7249                 internal static void XIfEvent (IntPtr display, ref XEvent xevent, Delegate event_predicate, IntPtr arg)
7250                 {
7251                         DebugHelper.TraceWriteLine ("XIfEvent");
7252                         _XIfEvent (display, ref xevent, event_predicate, arg);
7253                 }
7254 #endregion
7255
7256 #region Xinerama imports
7257                 [DllImport ("libXinerama", EntryPoint="XineramaQueryScreens")]
7258                 extern static IntPtr _XineramaQueryScreens (IntPtr display, out int number);
7259                 internal static IntPtr XineramaQueryScreens (IntPtr display, out int number)
7260                 {
7261                         DebugHelper.TraceWriteLine ("XineramaQueryScreens");
7262                         return _XineramaQueryScreens (display, out number);
7263                 }
7264
7265                 [DllImport ("libXinerama", EntryPoint="XineramaIsActive")]
7266                 extern static bool _XineramaIsActive (IntPtr display);
7267                 static bool XineramaNotInstalled;
7268
7269                 internal static bool XineramaIsActive (IntPtr display)
7270                 {
7271                         DebugHelper.TraceWriteLine ("XineramaIsActive");
7272
7273                         if (XineramaNotInstalled)
7274                                 return false;
7275                         try {
7276                                 return _XineramaIsActive (display);
7277                         } catch (DllNotFoundException) {
7278                                 // Xinerama isn't installed
7279                                 XineramaNotInstalled = true;
7280                                 return false;
7281                         }
7282                 }
7283 #endregion
7284
7285 #else //no TRACE defined
7286
7287 #region Xcursor imports
7288                 [DllImport ("libXcursor", EntryPoint = "XcursorLibraryLoadCursor")]
7289                 internal extern static IntPtr XcursorLibraryLoadCursor (IntPtr display, [MarshalAs (UnmanagedType.LPStr)] string name);
7290
7291                 [DllImport ("libXcursor", EntryPoint = "XcursorLibraryLoadImages")]
7292                 internal extern static IntPtr XcursorLibraryLoadImages ([MarshalAs (UnmanagedType.LPStr)] string file, IntPtr theme, int size);
7293
7294                 [DllImport ("libXcursor", EntryPoint = "XcursorImagesDestroy")]
7295                 internal extern static void XcursorImagesDestroy (IntPtr images);
7296
7297                 [DllImport ("libXcursor", EntryPoint = "XcursorGetDefaultSize")]
7298                 internal extern static int XcursorGetDefaultSize (IntPtr display);
7299
7300                 [DllImport ("libXcursor", EntryPoint = "XcursorImageLoadCursor")]
7301                 internal extern static IntPtr XcursorImageLoadCursor (IntPtr display, IntPtr image);
7302
7303                 [DllImport ("libXcursor", EntryPoint = "XcursorGetTheme")]
7304                 internal extern static IntPtr XcursorGetTheme (IntPtr display);
7305 #endregion
7306                 #region X11 Imports
7307                 [DllImport ("libX11", EntryPoint="XOpenDisplay")]
7308                 internal extern static IntPtr XOpenDisplay(IntPtr display);
7309                 [DllImport ("libX11", EntryPoint="XCloseDisplay")]
7310                 internal extern static int XCloseDisplay(IntPtr display);
7311                 [DllImport ("libX11", EntryPoint="XSynchronize")]
7312                 internal extern static IntPtr XSynchronize(IntPtr display, bool onoff);
7313
7314                 [DllImport ("libX11", EntryPoint="XCreateWindow")]
7315                 internal extern static IntPtr XCreateWindow(IntPtr display, IntPtr parent, int x, int y, int width, int height, int border_width, int depth, int xclass, IntPtr visual, UIntPtr valuemask, ref XSetWindowAttributes attributes);
7316
7317                 [DllImport ("libX11", EntryPoint="XCreateSimpleWindow")]
7318                 internal extern static IntPtr XCreateSimpleWindow(IntPtr display, IntPtr parent, int x, int y, int width, int height, int border_width, UIntPtr border, UIntPtr background);
7319
7320                 [DllImport ("libX11", EntryPoint="XMapWindow")]
7321                 internal extern static int XMapWindow(IntPtr display, IntPtr window);
7322
7323                 [DllImport ("libX11", EntryPoint="XMapRaised")]
7324                 internal extern static int XMapRaised(IntPtr display, IntPtr window);
7325
7326                 [DllImport ("libX11", EntryPoint="XUnmapWindow")]
7327                 internal extern static int XUnmapWindow(IntPtr display, IntPtr window);
7328
7329                 [DllImport ("libX11", EntryPoint="XMapSubwindows")]
7330                 internal extern static int XMapSubindows(IntPtr display, IntPtr window);
7331
7332                 [DllImport ("libX11", EntryPoint="XUnmapSubwindows")]
7333                 internal extern static int XUnmapSubwindows(IntPtr display, IntPtr window);
7334
7335                 [DllImport ("libX11", EntryPoint="XRootWindow")]
7336                 internal extern static IntPtr XRootWindow(IntPtr display, int screen_number);
7337
7338                 [DllImport ("libX11", EntryPoint="XNextEvent")]
7339                 internal extern static IntPtr XNextEvent(IntPtr display, ref XEvent xevent);
7340
7341                 [DllImport ("libX11", EntryPoint="XConnectionNumber")]
7342                 internal extern static int XConnectionNumber (IntPtr display);
7343
7344                 [DllImport ("libX11", EntryPoint="XPending")]
7345                 internal extern static int XPending (IntPtr display);
7346
7347                 [DllImport ("libX11", EntryPoint="XSelectInput")]
7348                 internal extern static IntPtr XSelectInput(IntPtr display, IntPtr window, IntPtr mask);
7349
7350                 [DllImport ("libX11", EntryPoint="XDestroyWindow")]
7351                 internal extern static int XDestroyWindow(IntPtr display, IntPtr window);
7352
7353                 [DllImport ("libX11", EntryPoint="XReparentWindow")]
7354                 internal extern static int XReparentWindow(IntPtr display, IntPtr window, IntPtr parent, int x, int y);
7355
7356                 [DllImport ("libX11", EntryPoint="XMoveResizeWindow")]
7357                 extern static int XMoveResizeWindow(IntPtr display, IntPtr window, int x, int y, int width, int height);
7358                 internal static int MoveResizeWindow(IntPtr display, IntPtr window, int x, int y, int width, int height)
7359                 {
7360                         int ret = XMoveResizeWindow (display, window, x, y, width, height);
7361                         Keyboard.MoveCurrentCaretPos ();
7362                         return ret;
7363                 }
7364
7365                 [DllImport ("libX11", EntryPoint="XResizeWindow")]
7366                 internal extern static int XResizeWindow(IntPtr display, IntPtr window, int width, int height);
7367
7368                 [DllImport ("libX11", EntryPoint="XGetWindowAttributes")]
7369                 internal extern static int XGetWindowAttributes(IntPtr display, IntPtr window, ref XWindowAttributes attributes);
7370
7371                 [DllImport ("libX11", EntryPoint="XFlush")]
7372                 internal extern static int XFlush(IntPtr display);
7373
7374                 [DllImport ("libX11", EntryPoint="XSetWMName")]
7375                 internal extern static int XSetWMName(IntPtr display, IntPtr window, ref XTextProperty text_prop);
7376
7377                 [DllImport ("libX11", EntryPoint="XStoreName")]
7378                 internal extern static int XStoreName(IntPtr display, IntPtr window, string window_name);
7379
7380                 [DllImport ("libX11", EntryPoint="XFetchName")]
7381                 internal extern static int XFetchName(IntPtr display, IntPtr window, ref IntPtr window_name);
7382
7383                 [DllImport ("libX11", EntryPoint="XSendEvent")]
7384                 internal extern static int XSendEvent(IntPtr display, IntPtr window, bool propagate, IntPtr event_mask, ref XEvent send_event);
7385
7386                 [DllImport ("libX11", EntryPoint="XQueryTree")]
7387                 internal extern static int XQueryTree(IntPtr display, IntPtr window, out IntPtr root_return, out IntPtr parent_return, out IntPtr children_return, out int nchildren_return);
7388
7389                 [DllImport ("libX11", EntryPoint="XFree")]
7390                 internal extern static int XFree(IntPtr data);
7391
7392                 [DllImport ("libX11", EntryPoint="XRaiseWindow")]
7393                 internal extern static int XRaiseWindow(IntPtr display, IntPtr window);
7394
7395                 [DllImport ("libX11", EntryPoint="XLowerWindow")]
7396                 internal extern static uint XLowerWindow(IntPtr display, IntPtr window);
7397
7398                 [DllImport ("libX11", EntryPoint="XConfigureWindow")]
7399                 internal extern static uint XConfigureWindow(IntPtr display, IntPtr window, ChangeWindowFlags value_mask, ref XWindowChanges values);
7400
7401                 [DllImport ("libX11", EntryPoint="XInternAtom")]
7402                 internal extern static IntPtr XInternAtom(IntPtr display, string atom_name, bool only_if_exists);
7403
7404                 [DllImport ("libX11", EntryPoint="XInternAtoms")]
7405                 internal extern static int XInternAtoms(IntPtr display, string[] atom_names, int atom_count, bool only_if_exists, IntPtr[] atoms);
7406
7407                 [DllImport ("libX11", EntryPoint="XSetWMProtocols")]
7408                 internal extern static int XSetWMProtocols(IntPtr display, IntPtr window, IntPtr[] protocols, int count);
7409
7410                 [DllImport ("libX11", EntryPoint="XGrabPointer")]
7411                 internal extern static int XGrabPointer(IntPtr display, IntPtr window, bool owner_events, EventMask event_mask, GrabMode pointer_mode, GrabMode keyboard_mode, IntPtr confine_to, IntPtr cursor, IntPtr timestamp);
7412
7413                 [DllImport ("libX11", EntryPoint="XUngrabPointer")]
7414                 internal extern static int XUngrabPointer(IntPtr display, IntPtr timestamp);
7415
7416                 [DllImport ("libX11", EntryPoint="XQueryPointer")]
7417                 internal extern static bool XQueryPointer(IntPtr display, IntPtr window, out IntPtr root, out IntPtr child, out int root_x, out int root_y, out int win_x, out int win_y, out int keys_buttons);
7418
7419                 [DllImport ("libX11", EntryPoint="XTranslateCoordinates")]
7420                 internal extern static bool XTranslateCoordinates (IntPtr display, IntPtr src_w, IntPtr dest_w, int src_x, int src_y, out int intdest_x_return, out int dest_y_return, out IntPtr child_return);
7421
7422                 [DllImport ("libX11", EntryPoint="XGetGeometry")]
7423                 internal extern static bool XGetGeometry(IntPtr display, IntPtr window, out IntPtr root, out int x, out int y, out int width, out int height, out int border_width, out int depth);
7424
7425                 [DllImport ("libX11", EntryPoint="XGetGeometry")]
7426                 internal extern static bool XGetGeometry(IntPtr display, IntPtr window, IntPtr root, out int x, out int y, out int width, out int height, IntPtr border_width, IntPtr depth);
7427
7428                 [DllImport ("libX11", EntryPoint="XGetGeometry")]
7429                 internal extern static bool XGetGeometry(IntPtr display, IntPtr window, IntPtr root, out int x, out int y, IntPtr width, IntPtr height, IntPtr border_width, IntPtr depth);
7430
7431                 [DllImport ("libX11", EntryPoint="XGetGeometry")]
7432                 internal extern static bool XGetGeometry(IntPtr display, IntPtr window, IntPtr root, IntPtr x, IntPtr y, out int width, out int height, IntPtr border_width, IntPtr depth);
7433
7434                 [DllImport ("libX11", EntryPoint="XWarpPointer")]
7435                 internal extern static uint XWarpPointer(IntPtr display, IntPtr src_w, IntPtr dest_w, int src_x, int src_y, uint src_width, uint src_height, int dest_x, int dest_y);
7436
7437                 [DllImport ("libX11", EntryPoint="XClearWindow")]
7438                 internal extern static int XClearWindow(IntPtr display, IntPtr window);
7439
7440                 [DllImport ("libX11", EntryPoint="XClearArea")]
7441                 internal extern static int XClearArea(IntPtr display, IntPtr window, int x, int y, int width, int height, bool exposures);
7442
7443                 // Colormaps
7444                 [DllImport ("libX11", EntryPoint="XDefaultScreenOfDisplay")]
7445                 internal extern static IntPtr XDefaultScreenOfDisplay(IntPtr display);
7446
7447                 [DllImport ("libX11", EntryPoint="XScreenNumberOfScreen")]
7448                 internal extern static int XScreenNumberOfScreen(IntPtr display, IntPtr Screen);
7449
7450                 [DllImport ("libX11", EntryPoint="XDefaultVisual")]
7451                 internal extern static IntPtr XDefaultVisual(IntPtr display, int screen_number);
7452
7453                 [DllImport ("libX11", EntryPoint="XDefaultDepth")]
7454                 internal extern static uint XDefaultDepth(IntPtr display, int screen_number);
7455
7456                 [DllImport ("libX11", EntryPoint="XDefaultScreen")]
7457                 internal extern static int XDefaultScreen(IntPtr display);
7458
7459                 [DllImport ("libX11", EntryPoint="XDefaultColormap")]
7460                 internal extern static IntPtr XDefaultColormap(IntPtr display, int screen_number);
7461
7462                 [DllImport ("libX11", EntryPoint="XLookupColor")]
7463                 internal extern static int XLookupColor(IntPtr display, IntPtr Colormap, string Coloranem, ref XColor exact_def_color, ref XColor screen_def_color);
7464
7465                 [DllImport ("libX11", EntryPoint="XAllocColor")]
7466                 internal extern static int XAllocColor(IntPtr display, IntPtr Colormap, ref XColor colorcell_def);
7467
7468                 [DllImport ("libX11", EntryPoint="XSetTransientForHint")]
7469                 internal extern static int XSetTransientForHint(IntPtr display, IntPtr window, IntPtr prop_window);
7470
7471                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
7472                 internal extern static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref MotifWmHints data, int nelements);
7473
7474                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
7475                 internal extern static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref uint value, int nelements);
7476
7477                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
7478                 internal extern static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, ref IntPtr value, int nelements);
7479
7480                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
7481                 internal extern static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, uint[] data, int nelements);
7482
7483                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
7484                 internal extern static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, int[] data, int nelements);
7485
7486                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
7487                 internal extern static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, IntPtr[] data, int nelements);
7488
7489                 [DllImport ("libX11", EntryPoint="XChangeProperty")]
7490                 internal extern static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, IntPtr atoms, int nelements);
7491
7492                 [DllImport ("libX11", EntryPoint="XChangeProperty", CharSet=CharSet.Ansi)]
7493                 internal extern static int XChangeProperty(IntPtr display, IntPtr window, IntPtr property, IntPtr type, int format, PropertyMode mode, string text, int text_length);
7494
7495                 [DllImport ("libX11", EntryPoint="XDeleteProperty")]
7496                 internal extern static int XDeleteProperty(IntPtr display, IntPtr window, IntPtr property);
7497
7498                 // Drawing
7499                 [DllImport ("libX11", EntryPoint="XCreateGC")]
7500                 internal extern static IntPtr XCreateGC(IntPtr display, IntPtr window, IntPtr valuemask, ref XGCValues values);
7501
7502                 [DllImport ("libX11", EntryPoint="XFreeGC")]
7503                 internal extern static int XFreeGC(IntPtr display, IntPtr gc);
7504
7505                 [DllImport ("libX11", EntryPoint="XSetFunction")]
7506                 internal extern static int XSetFunction(IntPtr display, IntPtr gc, GXFunction function);
7507
7508                 [DllImport ("libX11", EntryPoint="XSetLineAttributes")]
7509                 internal extern static int XSetLineAttributes(IntPtr display, IntPtr gc, int line_width, GCLineStyle line_style, GCCapStyle cap_style, GCJoinStyle join_style);
7510
7511                 [DllImport ("libX11", EntryPoint="XDrawLine")]
7512                 internal extern static int XDrawLine(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int x2, int y2);
7513
7514                 [DllImport ("libX11", EntryPoint="XDrawRectangle")]
7515                 internal extern static int XDrawRectangle(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int width, int height);
7516
7517                 [DllImport ("libX11", EntryPoint="XFillRectangle")]
7518                 internal extern static int XFillRectangle(IntPtr display, IntPtr drawable, IntPtr gc, int x1, int y1, int width, int height);
7519
7520                 [DllImport ("libX11", EntryPoint="XSetWindowBackground")]
7521                 internal extern static int XSetWindowBackground(IntPtr display, IntPtr window, IntPtr background);
7522
7523                 [DllImport ("libX11", EntryPoint="XCopyArea")]
7524                 internal extern static int XCopyArea(IntPtr display, IntPtr src, IntPtr dest, IntPtr gc, int src_x, int src_y, int width, int height, int dest_x, int dest_y);
7525
7526                 [DllImport ("libX11", EntryPoint="XGetWindowProperty")]
7527                 internal extern static int XGetWindowProperty(IntPtr display, IntPtr window, IntPtr atom, IntPtr long_offset, IntPtr long_length, bool delete, IntPtr req_type, out IntPtr actual_type, out int actual_format, out IntPtr nitems, out IntPtr bytes_after, ref IntPtr prop);
7528
7529                 [DllImport ("libX11", EntryPoint="XSetInputFocus")]
7530                 internal extern static int XSetInputFocus(IntPtr display, IntPtr window, RevertTo revert_to, IntPtr time);
7531
7532                 [DllImport ("libX11", EntryPoint="XIconifyWindow")]
7533                 internal extern static int XIconifyWindow(IntPtr display, IntPtr window, int screen_number);
7534
7535                 [DllImport ("libX11", EntryPoint="XDefineCursor")]
7536                 internal extern static int XDefineCursor(IntPtr display, IntPtr window, IntPtr cursor);
7537
7538                 [DllImport ("libX11", EntryPoint="XUndefineCursor")]
7539                 internal extern static int XUndefineCursor(IntPtr display, IntPtr window);
7540
7541                 [DllImport ("libX11", EntryPoint="XFreeCursor")]
7542                 internal extern static int XFreeCursor(IntPtr display, IntPtr cursor);
7543
7544                 [DllImport ("libX11", EntryPoint="XCreateFontCursor")]
7545                 internal extern static IntPtr XCreateFontCursor(IntPtr display, CursorFontShape shape);
7546
7547                 [DllImport ("libX11", EntryPoint="XCreatePixmapCursor")]
7548                 internal extern static IntPtr XCreatePixmapCursor(IntPtr display, IntPtr source, IntPtr mask, ref XColor foreground_color, ref XColor background_color, int x_hot, int y_hot);
7549
7550                 [DllImport ("libX11", EntryPoint="XCreatePixmapFromBitmapData")]
7551                 internal extern static IntPtr XCreatePixmapFromBitmapData(IntPtr display, IntPtr drawable, byte[] data, int width, int height, IntPtr fg, IntPtr bg, int depth);
7552
7553                 [DllImport ("libX11", EntryPoint="XCreatePixmap")]
7554                 internal extern static IntPtr XCreatePixmap(IntPtr display, IntPtr d, int width, int height, int depth);
7555
7556                 [DllImport ("libX11", EntryPoint="XFreePixmap")]
7557                 internal extern static IntPtr XFreePixmap(IntPtr display, IntPtr pixmap);
7558
7559                 [DllImport ("libX11", EntryPoint="XQueryBestCursor")]
7560                 internal extern static int XQueryBestCursor(IntPtr display, IntPtr drawable, int width, int height, out int best_width, out int best_height);
7561
7562                 [DllImport ("libX11", EntryPoint="XQueryExtension")]
7563                 internal extern static int XQueryExtension(IntPtr display, string extension_name, ref int major, ref int first_event, ref int first_error);
7564
7565                 [DllImport ("libX11", EntryPoint="XWhitePixel")]
7566                 internal extern static IntPtr XWhitePixel(IntPtr display, int screen_no);
7567
7568                 [DllImport ("libX11", EntryPoint="XBlackPixel")]
7569                 internal extern static IntPtr XBlackPixel(IntPtr display, int screen_no);
7570
7571                 [DllImport ("libX11", EntryPoint="XGrabServer")]
7572                 internal extern static void XGrabServer(IntPtr display);
7573
7574                 [DllImport ("libX11", EntryPoint="XUngrabServer")]
7575                 internal extern static void XUngrabServer(IntPtr display);
7576
7577                 [DllImport ("libX11", EntryPoint="XGetWMNormalHints")]
7578                 internal extern static void XGetWMNormalHints(IntPtr display, IntPtr window, ref XSizeHints hints, out IntPtr supplied_return);
7579
7580                 [DllImport ("libX11", EntryPoint="XSetWMNormalHints")]
7581                 internal extern static void XSetWMNormalHints(IntPtr display, IntPtr window, ref XSizeHints hints);
7582
7583                 [DllImport ("libX11", EntryPoint="XSetZoomHints")]
7584                 internal extern static void XSetZoomHints(IntPtr display, IntPtr window, ref XSizeHints hints);
7585
7586                 [DllImport ("libX11", EntryPoint="XSetWMHints")]
7587                 internal extern static void XSetWMHints(IntPtr display, IntPtr window, ref XWMHints wmhints);
7588
7589                 [DllImport ("libX11", EntryPoint="XGetIconSizes")]
7590                 internal extern static int XGetIconSizes(IntPtr display, IntPtr window, out IntPtr size_list, out int count);
7591
7592                 [DllImport ("libX11", EntryPoint="XSetErrorHandler")]
7593                 internal extern static IntPtr XSetErrorHandler(XErrorHandler error_handler);
7594
7595                 [DllImport ("libX11", EntryPoint="XGetErrorText")]
7596                 internal extern static IntPtr XGetErrorText(IntPtr display, byte code, StringBuilder buffer, int length);
7597
7598                 [DllImport ("libX11", EntryPoint="XInitThreads")]
7599                 internal extern static int XInitThreads();
7600
7601                 [DllImport ("libX11", EntryPoint="XConvertSelection")]
7602                 internal extern static int XConvertSelection(IntPtr display, IntPtr selection, IntPtr target, IntPtr property, IntPtr requestor, IntPtr time);
7603
7604                 [DllImport ("libX11", EntryPoint="XGetSelectionOwner")]
7605                 internal extern static IntPtr XGetSelectionOwner(IntPtr display, IntPtr selection);
7606
7607                 [DllImport ("libX11", EntryPoint="XSetSelectionOwner")]
7608                 internal extern static int XSetSelectionOwner(IntPtr display, IntPtr selection, IntPtr owner, IntPtr time);
7609
7610                 [DllImport ("libX11", EntryPoint="XSetPlaneMask")]
7611                 internal extern static int XSetPlaneMask(IntPtr display, IntPtr gc, IntPtr mask);
7612
7613                 [DllImport ("libX11", EntryPoint="XSetForeground")]
7614                 internal extern static int XSetForeground(IntPtr display, IntPtr gc, UIntPtr foreground);
7615
7616                 [DllImport ("libX11", EntryPoint="XSetBackground")]
7617                 internal extern static int XSetBackground(IntPtr display, IntPtr gc, UIntPtr background);
7618
7619                 [DllImport ("libX11", EntryPoint="XBell")]
7620                 internal extern static int XBell(IntPtr display, int percent);
7621
7622                 [DllImport ("libX11", EntryPoint="XChangeActivePointerGrab")]
7623                 internal extern static int XChangeActivePointerGrab (IntPtr display, EventMask event_mask, IntPtr cursor, IntPtr time);
7624
7625                 [DllImport ("libX11", EntryPoint="XFilterEvent")]
7626                 internal extern static bool XFilterEvent(ref XEvent xevent, IntPtr window);
7627
7628                 [DllImport ("libX11", EntryPoint="XkbSetDetectableAutoRepeat")]
7629                 internal extern static void XkbSetDetectableAutoRepeat (IntPtr display, bool detectable, IntPtr supported);
7630
7631                 [DllImport ("libX11", EntryPoint="XPeekEvent")]
7632                 internal extern static void XPeekEvent (IntPtr display, ref XEvent xevent);
7633
7634                 [DllImport ("libX11", EntryPoint="XIfEvent")]
7635                 internal extern static void XIfEvent (IntPtr display, ref XEvent xevent, Delegate event_predicate, IntPtr arg);
7636
7637                 [DllImport ("libX11", EntryPoint="XGetInputFocus")]
7638                 internal extern static void XGetInputFocus (IntPtr display, out IntPtr focus, out IntPtr revert_to);
7639                 #endregion
7640 #region Gtk/Gdk imports
7641                 [DllImport("libgdk-x11-2.0")]
7642                 internal extern static IntPtr gdk_atom_intern (string atomName, bool onlyIfExists);
7643
7644                 [DllImport("libgtk-x11-2.0")]
7645                 internal extern static IntPtr gtk_clipboard_get (IntPtr atom);
7646
7647                 [DllImport("libgtk-x11-2.0")]
7648                 internal extern static void gtk_clipboard_store (IntPtr clipboard);
7649
7650                 [DllImport("libgtk-x11-2.0")]
7651                 internal extern static void gtk_clipboard_set_text (IntPtr clipboard, string text, int len);
7652 #endregion
7653
7654
7655 #region Xinerama imports
7656                 [DllImport ("libXinerama")]
7657                 internal extern static IntPtr XineramaQueryScreens (IntPtr display, out int number);
7658
7659                 [DllImport ("libXinerama", EntryPoint = "XineramaIsActive")]
7660                 extern static bool _XineramaIsActive (IntPtr display);
7661                 static bool XineramaNotInstalled;
7662
7663                 internal static bool XineramaIsActive (IntPtr display)
7664                 {
7665                         if (XineramaNotInstalled)
7666                                 return false;
7667                         try {
7668                                 return _XineramaIsActive (display);
7669                         } catch (DllNotFoundException) {
7670                                 // Xinerama isn't installed
7671                                 XineramaNotInstalled = true;
7672                                 return false;
7673                         }
7674                 }
7675 #endregion
7676
7677 #endif
7678         }
7679 }