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