mcs/class/Managed.Windows.Forms/System.Windows.Forms/Application.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 //      Daniel Nauck    (dna(at)mono-project(dot)de)
  25 //
  26
  27 // COMPLETE
  28
  29 #undef DebugRunLoop
  30
  31 using Microsoft.Win32;
  32 using System;
  33 using System.Drawing;
  34 using System.ComponentModel;
  35 using System.Collections;
  36 using System.Diagnostics;
  37 using System.Globalization;
  38 using System.IO;
  39 using System.Reflection;
  40 using System.Runtime.InteropServices;
  41 using System.Threading;
  42 #if NET_2_0
  43 using System.Text;
  44 using System.Windows.Forms.VisualStyles;
  45 #endif
  46
  47 namespace System.Windows.Forms {
  48         public sealed class Application {
  49                 internal class MWFThread {
  50                         #region Fields
  51                         private ApplicationContext      context;
  52                         private bool                    messageloop_started;
  53                         private bool                    handling_exception;
  54                         private int                     thread_id;
  55
  56                         private static Hashtable        threads = new Hashtable();
  57                         #endregion      // Fields
  58
  59                         #region Constructors
  60                         private MWFThread() {
  61                         }
  62                         #endregion      // Constructors
  63
  64                         #region Properties
  65                         public ApplicationContext Context {
  66                                 get { return context; }
  67                                 set { context = value; }
  68                         }
  69
  70                         public bool MessageLoop {
  71                                 get { return messageloop_started; }
  72                                 set { messageloop_started = value; }
  73                         }
  74
  75                         public bool HandlingException {
  76                                 get { return handling_exception; }
  77                                 set { handling_exception = value; }
  78
  79                         }
  80
  81                         public static int LoopCount {
  82                                 get {
  83                                         lock (threads) {
  84                                                 int loops = 0;
  85
  86                                                 foreach (MWFThread thread in threads.Values) {
  87                                                         if (thread.messageloop_started)
  88                                                                 loops++;
  89                                                 }
  90
  91                                                 return loops;
  92                                         }
  93                                 }
  94                         }
  95
  96                         public static MWFThread Current {
  97                                 get {
  98                                         MWFThread       thread;
  99
 100                                         thread = null;
 101                                         lock (threads) {
 102                                                 thread = (MWFThread)threads[Thread.CurrentThread.GetHashCode()];
 103                                                 if (thread == null) {
 104                                                         thread = new MWFThread();
 105                                                         thread.thread_id = Thread.CurrentThread.GetHashCode();
 106                                                         threads[thread.thread_id] = thread;
 107                                                 }
 108                                         }
 109
 110                                         return thread;
 111                                 }
 112                         }
 113                         #endregion      // Properties
 114
 115                         #region Methods
 116                         public void Exit() {
 117                                 if (context != null) {
 118                                         context.ExitThread();
 119                                 }
 120                                 context = null;
 121
 122                                 if (Application.ThreadExit != null) {
 123                                         Application.ThreadExit(null, EventArgs.Empty);
 124                                 }
 125
 126                                 if (LoopCount == 0) {
 127                                         if (Application.ApplicationExit != null) {
 128                                                 Application.ApplicationExit(null, EventArgs.Empty);
 129                                         }
 130                                 }
 131
 132                                 ((MWFThread)threads[thread_id]).MessageLoop = false;
 133                         }
 134                         #endregion      // Methods
 135                 }
 136
 137                 private static bool                     browser_embedded        = false;
 138                 private static InputLanguage            input_language          = InputLanguage.CurrentInputLanguage;
 139                 private static string                   safe_caption_format     = "{1} - {0} - {2}";
 140                 private static ArrayList                message_filters         = new ArrayList();
 141                 private static FormCollection           forms                   = new FormCollection ();
 142
 143 #if NET_2_0
 144                 private static bool use_wait_cursor = false;
 145                 private static ToolStrip keyboard_capture;
 146                 private static VisualStyleState visual_style_state = VisualStyleState.ClientAndNonClientAreasEnabled;
 147 #endif
 148
 149                 private Application () {
 150                 }
 151
 152                 #region Private Methods
 153                 internal static void CloseForms(Thread thread) {
 154                         #if DebugRunLoop
 155                                 Console.WriteLine("   CloseForms({0}) called", thread);
 156                         #endif
 157
 158                         ArrayList forms_to_close = new ArrayList ();
 159
 160                         lock (forms) {
 161                                 foreach (Form f in forms) {
 162                                         if (thread == null || thread == f.creator_thread)
 163                                                 forms_to_close.Add (f);
 164                                 }
 165
 166                                 foreach (Form f in forms_to_close) {
 167                                         #if DebugRunLoop
 168                                                 Console.WriteLine("      Closing form {0}", f);
 169                                         #endif
 170                                         f.Dispose ();
 171                                 }
 172                         }
 173                 }
 174                 #endregion      // Private methods
 175
 176                 #region Public Static Properties
 177                 public static bool AllowQuit {
 178                         get {
 179                                 return !browser_embedded;
 180                         }
 181                 }
 182
 183                 public static string CommonAppDataPath {
 184                         get {
 185                                 return Environment.GetFolderPath(Environment.SpecialFolder.CommonApplicationData);
 186                         }
 187                 }
 188
 189                 public static RegistryKey CommonAppDataRegistry {
 190                         get {
 191                                 RegistryKey     key;
 192
 193                                 key = Registry.LocalMachine.OpenSubKey("Software\\" + Application.CompanyName + "\\" + Application.ProductName + "\\" + Application.ProductVersion, true);
 194
 195                                 return key;
 196                         }
 197                 }
 198
 199                 public static string CompanyName {
 200                         get {
 201                                 Assembly assembly = Assembly.GetEntryAssembly ();
 202                                 if (assembly == null)
 203                                         assembly = Assembly.GetCallingAssembly ();
 204                                 if (assembly == null)
 205                                         return string.Empty;
 206
 207                                 AssemblyCompanyAttribute[] attrs = (AssemblyCompanyAttribute[]) assembly.GetCustomAttributes(typeof(AssemblyCompanyAttribute), true);
 208
 209                                 if ((attrs != null) && attrs.Length>0) {
 210                                         return attrs[0].Company;
 211                                 }
 212
 213                                 return assembly.GetName().Name;
 214                         }
 215                 }
 216
 217                 public static CultureInfo CurrentCulture {
 218                         get {
 219                                 return Thread.CurrentThread.CurrentUICulture;
 220                         }
 221
 222                         set {
 223
 224                                 Thread.CurrentThread.CurrentUICulture=value;
 225                         }
 226                 }
 227
 228                 public static InputLanguage CurrentInputLanguage {
 229                         get {
 230                                 return input_language;
 231                         }
 232
 233                         set {
 234                                 input_language=value;
 235                         }
 236                 }
 237
 238                 public static string ExecutablePath {
 239                         get {
 240                                 return Assembly.GetEntryAssembly().Location;
 241                         }
 242                 }
 243
 244                 public static string LocalUserAppDataPath {
 245                         get {
 246                                 return Path.Combine(Path.Combine(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData), CompanyName), ProductName), ProductVersion);
 247                         }
 248                 }
 249
 250                 public static bool MessageLoop {
 251                         get {
 252                                 return MWFThread.Current.MessageLoop;
 253                         }
 254                 }
 255
 256                 public static string ProductName {
 257                         get {
 258                                 Assembly assembly = Assembly.GetEntryAssembly ();
 259                                 if (assembly == null)
 260                                         assembly = Assembly.GetCallingAssembly ();
 261                                 if (assembly == null)
 262                                         return string.Empty;
 263
 264                                 AssemblyProductAttribute[] attrs = (AssemblyProductAttribute[]) assembly.GetCustomAttributes(typeof(AssemblyProductAttribute), true);
 265
 266                                 if ((attrs != null) && attrs.Length>0) {
 267                                         return attrs[0].Product;
 268                                 }
 269
 270                                 return assembly.GetName ().Name;
 271                         }
 272                 }
 273
 274                 public static string ProductVersion {
 275                         get {
 276                                 String version;
 277
 278                                 Assembly assembly = Assembly.GetEntryAssembly ();
 279                                 if (assembly == null)
 280                                         assembly = Assembly.GetCallingAssembly ();
 281                                 if (assembly == null)
 282                                         return string.Empty;
 283
 284                                 version = assembly.GetName ().Version.ToString ();
 285
 286                                 return version;
 287                         }
 288                 }
 289
 290                 public static string SafeTopLevelCaptionFormat {
 291                         get {
 292                                 return safe_caption_format;
 293                         }
 294
 295                         set {
 296                                 safe_caption_format=value;
 297                         }
 298                 }
 299
 300                 public static string StartupPath {
 301                         get {
 302                                 return Path.GetDirectoryName(Application.ExecutablePath);
 303                         }
 304                 }
 305
 306                 public static string UserAppDataPath {
 307                         get {
 308                                 return Path.Combine(Path.Combine(Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), CompanyName), ProductName), ProductVersion);
 309                         }
 310                 }
 311
 312                 public static RegistryKey UserAppDataRegistry {
 313                         get {
 314                                 RegistryKey     key;
 315
 316                                 key = Registry.CurrentUser.OpenSubKey("Software\\" + Application.CompanyName + "\\" + Application.ProductName + "\\" + Application.ProductVersion, true);
 317
 318                                 return key;
 319                         }
 320                 }
 321
 322 #if NET_2_0
 323
 324                 public static bool UseWaitCursor {
 325                         get {
 326                                 return use_wait_cursor;
 327                         }
 328                         set {
 329                                 use_wait_cursor = value;
 330                                 if (use_wait_cursor) {
 331                                         foreach (Form form in OpenForms) {
 332                                                 form.Cursor = Cursors.WaitCursor;
 333                                         }
 334                                 }
 335                         }
 336                 }
 337
 338                 public static bool RenderWithVisualStyles {
 339                       get {
 340                                 if (VisualStyleInformation.IsSupportedByOS)
 341                                 {
 342                                         if (!VisualStyleInformation.IsEnabledByUser)
 343                                                 return false;
 344
 345                                         if (!XplatUI.ThemesEnabled)
 346                                                 return false;
 347
 348                                         if (Application.VisualStyleState == VisualStyleState.ClientAndNonClientAreasEnabled)
 349                                                 return true;
 350
 351                                         if (Application.VisualStyleState == VisualStyleState.ClientAreaEnabled)
 352                                                 return true;
 353                                 }
 354
 355                                 return false;
 356                       }
 357                 }
 358
 359                 public static VisualStyleState VisualStyleState {
 360                         get { return Application.visual_style_state; }
 361                         set { Application.visual_style_state = value; }
 362                 }
 363 #endif
 364
 365                 #endregion
 366
 367                 #region Public Static Methods
 368                 public static void AddMessageFilter(IMessageFilter value) {
 369                         lock (message_filters) {
 370                                 message_filters.Add(value);
 371                         }
 372                 }
 373
 374                 public static void DoEvents() {
 375                         XplatUI.DoEvents();
 376                 }
 377
 378                 public static void EnableVisualStyles() {
 379                         XplatUI.EnableThemes();
 380                 }
 381
 382 #if NET_2_0
 383                 //
 384                 // If true, it uses GDI+, performance reasons were quoted
 385                 //
 386                 static internal bool use_compatible_text_rendering = true;
 387
 388                 public static void SetCompatibleTextRenderingDefault (bool defaultValue)
 389                 {
 390                         use_compatible_text_rendering = defaultValue;
 391                 }
 392
 393                 public static FormCollection OpenForms {
 394                         get {
 395                                 return forms;
 396                         }
 397                 }
 398
 399                 [MonoNotSupported ("Empty stub.")]
 400                 public static void SetUnhandledExceptionMode (UnhandledExceptionMode mode)
 401                 {
 402                         //FIXME: a stub to fill
 403                 }
 404
 405                 public static void RaiseIdle (EventArgs e)
 406                 {
 407                         XplatUI.RaiseIdle (e);
 408                 }
 409
 410                 public static void Restart ()
 411                 {
 412                         //FIXME: ClickOnce stuff using the Update or UpdateAsync methods.
 413                         //FIXME: SecurityPermission: Restart () requires IsUnrestricted permission.
 414
 415                         if (Assembly.GetEntryAssembly () == null)
 416                                 throw new NotSupportedException ("The method 'Restart' is not supported by this application type.");
 417
 418                         string mono_path = null;
 419
 420                         //Get mono path
 421                         PropertyInfo gac = typeof (Environment).GetProperty ("GacPath", BindingFlags.Static | BindingFlags.NonPublic);
 422                         MethodInfo get_gac = null;
 423                         if (gac != null)
 424                                 get_gac = gac.GetGetMethod (true);
 425
 426                         if (get_gac != null) {
 427                                 string gac_path = Path.GetDirectoryName ((string)get_gac.Invoke (null, null));
 428                                 string mono_prefix = Path.GetDirectoryName (Path.GetDirectoryName (gac_path));
 429
 430                                 if (XplatUI.RunningOnUnix) {
 431                                         mono_path = Path.Combine (mono_prefix, "bin/mono");
 432                                         if (!File.Exists (mono_path))
 433                                                 mono_path = "mono";
 434                                 } else {
 435                                         mono_path = Path.Combine (mono_prefix, "bin\\mono.bat");
 436
 437                                         if (!File.Exists (mono_path))
 438                                                 mono_path = Path.Combine (mono_prefix, "bin\\mono.exe");
 439
 440                                         if (!File.Exists (mono_path))
 441                                                 mono_path = Path.Combine (mono_prefix, "mono\\mono\\mini\\mono.exe");
 442
 443                                         if (!File.Exists (mono_path))
 444                                                 throw new FileNotFoundException (string.Format ("Windows mono path not found: '{0}'", mono_path));
 445                                 }
 446                         }
 447
 448                         //Get command line arguments
 449                         StringBuilder argsBuilder = new StringBuilder ();
 450                         string[] args = Environment.GetCommandLineArgs ();
 451                         for (int i = 0; i < args.Length; i++)
 452                         {
 453                                 argsBuilder.Append (string.Format ("\"{0}\" ", args[i]));
 454                         }
 455                         string arguments = argsBuilder.ToString ();
 456                         ProcessStartInfo procInfo = Process.GetCurrentProcess ().StartInfo;
 457
 458                         if (mono_path == null) { //it is .NET on Windows
 459                                 procInfo.FileName = args[0];
 460                                 procInfo.Arguments = arguments.Remove (0, args[0].Length + 3); //1 space and 2 quotes
 461                         }
 462                         else {
 463                                 procInfo.Arguments = arguments;
 464                                 procInfo.FileName = mono_path;
 465                         }
 466
 467                         procInfo.WorkingDirectory = Environment.CurrentDirectory;
 468
 469                         Application.Exit ();
 470                         Process.Start (procInfo);
 471                 }
 472 #endif
 473
 474                 public static void Exit() {
 475                         XplatUI.PostQuitMessage(0);
 476                         CloseForms(null);
 477                 }
 478
 479                 public static void ExitThread() {
 480                         CloseForms(Thread.CurrentThread);
 481                         // this might not be right - need to investigate (somehow) if a WM_QUIT message is generated here
 482                         XplatUI.PostQuitMessage(0);
 483                 }
 484
 485                 public static ApartmentState OleRequired() {
 486                         //throw new NotImplementedException("OLE Not supported by this System.Windows.Forms implementation");
 487                         return ApartmentState.Unknown;
 488                 }
 489
 490                 public static void OnThreadException(Exception t) {
 491                         if (MWFThread.Current.HandlingException) {
 492                                 /* we're already handling an exception and we got
 493                                    another one?  print it out and exit, this means
 494                                    we've got a runtime/SWF bug. */
 495                                 Console.WriteLine (t);
 496                                 // Don't use Application.Exit here, since it may cause a stack overflow
 497                                 // in certain cases. It's however hard to reproduce since it seems to
 498                                 // be depending on when the GC kicks in.
 499                                 Environment.Exit(1);
 500                         }
 501
 502                         try {
 503                                 MWFThread.Current.HandlingException = true;
 504
 505                                 if (Application.ThreadException != null) {
 506                                         Application.ThreadException(null, new ThreadExceptionEventArgs(t));
 507                                         return;
 508                                 }
 509
 510                                 if (SystemInformation.UserInteractive) {
 511                                         Form form = new ThreadExceptionDialog (t);
 512                                         form.ShowDialog ();
 513                                 } else {
 514                                         Console.WriteLine (t.ToString ());
 515                                         Application.Exit ();
 516                                 }
 517                         } finally {
 518                                 MWFThread.Current.HandlingException = false;
 519                         }
 520                 }
 521
 522                 public static void RemoveMessageFilter(IMessageFilter filter) {
 523                         lock (message_filters) {
 524                                 message_filters.Remove(filter);
 525                         }
 526                 }
 527
 528                 public static void Run() {
 529                         RunLoop(false, new ApplicationContext());
 530                 }
 531
 532                 public static void Run(Form mainForm) {
 533                         RunLoop(false, new ApplicationContext(mainForm));
 534                 }
 535
 536                 public static void Run(ApplicationContext context) {
 537                         RunLoop(false, context);
 538                 }
 539
 540                 private static void DisableFormsForModalLoop (Queue toplevels, ApplicationContext context)
 541                 {
 542                         Form f;
 543
 544                         lock (forms) {
 545                                 IEnumerator control = forms.GetEnumerator ();
 546
 547                                 while (control.MoveNext ()) {
 548                                         f = (Form)control.Current;
 549
 550                                         // Don't disable the main form.
 551                                         if (f == context.MainForm) {
 552                                                 continue;
 553                                         }
 554
 555                                         // Don't disable any children of the main form.
 556                                         // These do not have to be MDI children.
 557                                         Control current = f;
 558                                         bool is_child_of_main = false; ;
 559
 560                                         do {
 561                                                 if (current.Parent == context.MainForm) {
 562                                                         is_child_of_main = true;
 563                                                         break;
 564                                                 }
 565                                                 current = current.Parent;
 566                                         } while (current != null);
 567
 568                                         if (is_child_of_main)
 569                                                 continue;
 570
 571                                         // Disable the rest
 572                                         if (f.IsHandleCreated && XplatUI.IsEnabled (f.Handle)) {
 573 #if DebugRunLoop
 574                                                                 Console.WriteLine("      Disabling form {0}", f);
 575 #endif
 576                                                 XplatUI.EnableWindow (f.Handle, false);
 577                                                 toplevels.Enqueue (f);
 578                                         }
 579                                 }
 580                         }
 581
 582                 }
 583
 584
 585                 private static void EnableFormsForModalLoop (Queue toplevels, ApplicationContext context)
 586                 {
 587                         while (toplevels.Count > 0) {
 588 #if DebugRunLoop
 589                                                 Console.WriteLine("      Re-Enabling form form {0}", toplevels.Peek());
 590 #endif
 591                                 Form c = (Form)toplevels.Dequeue ();
 592                                 if (c.IsHandleCreated) {
 593                                         XplatUI.EnableWindow (c.window.Handle, true);
 594                                         context.MainForm = c;
 595                                 }
 596                         }
 597 #if DebugRunLoop
 598                                         Console.WriteLine("   Done with the re-enable");
 599 #endif
 600                 }
 601
 602                 internal static void RunLoop(bool Modal, ApplicationContext context) {
 603                         Queue           toplevels;
 604                         MSG             msg;
 605                         Object          queue_id;
 606                         MWFThread       thread;
 607                         ApplicationContext previous_thread_context;
 608
 609                         thread = MWFThread.Current;
 610
 611                         /*
 612                          * There is a NotWorking test for this, but since we are using this method both for Form.ShowDialog as for ApplicationContexts we'll
 613                          * fail on nested ShowDialogs, so disable the check for the moment.
 614                          */
 615                         //if (thread.MessageLoop) {
 616                         //        throw new InvalidOperationException ("Starting a second message loop on a single thread is not a valid operation. Use Form.ShowDialog instead.");
 617                         //}
 618
 619                         msg = new MSG();
 620
 621                         if (context == null) {
 622                                 context = new ApplicationContext();
 623                         }
 624
 625                         previous_thread_context = thread.Context;
 626                         thread.Context = context;
 627
 628                         if (context.MainForm != null) {
 629                                 context.MainForm.is_modal = Modal;
 630                                 context.MainForm.context = context;
 631                                 context.MainForm.closing = false;
 632                                 context.MainForm.Visible = true;        // Cannot use Show() or scaling gets confused by menus
 633                                 // XXX the above line can be used to close the form. another problem with our handling of Show/Activate.
 634                                 if (context.MainForm != null)
 635                                         context.MainForm.Activate();
 636                         }
 637
 638                         #if DebugRunLoop
 639                                 Console.WriteLine("Entering RunLoop(Modal={0}, Form={1})", Modal, context.MainForm != null ? context.MainForm.ToString() : "NULL");
 640                         #endif
 641
 642                         if (Modal) {
 643                                 toplevels = new Queue ();
 644                                 DisableFormsForModalLoop (toplevels, context);
 645
 646                                 // FIXME - need activate?
 647                                 /* make sure the MainForm is enabled */
 648                                 if (context.MainForm != null) {
 649                                         XplatUI.EnableWindow (context.MainForm.Handle, true);
 650                                         XplatUI.SetModal(context.MainForm.Handle, true);
 651                                 }
 652                         } else {
 653                                 toplevels = null;
 654                         }
 655
 656                         queue_id = XplatUI.StartLoop(Thread.CurrentThread);
 657                         thread.MessageLoop = true;
 658
 659                         bool quit = false;
 660
 661                         while (!quit && XplatUI.GetMessage(queue_id, ref msg, IntPtr.Zero, 0, 0)) {
 662                                 lock (message_filters) {
 663                                         if (message_filters.Count > 0) {
 664                                                 Message m;
 665                                                 bool    drop;
 666
 667                                                 drop = false;
 668                                                 m = Message.Create(msg.hwnd, (int)msg.message, msg.wParam, msg.lParam);
 669                                                 for (int i = 0; i < message_filters.Count; i++) {
 670                                                         if (((IMessageFilter)message_filters[i]).PreFilterMessage(ref m)) {
 671                                                                 // we're dropping the message
 672                                                                 drop = true;
 673                                                                 break;
 674                                                         }
 675                                                 }
 676                                                 if (drop) {
 677                                                         continue;
 678                                                 }
 679                                         }
 680                                 }
 681
 682                                 switch((Msg)msg.message) {
 683                                 case Msg.WM_KEYDOWN:
 684                                 case Msg.WM_SYSKEYDOWN:
 685                                 case Msg.WM_CHAR:
 686                                 case Msg.WM_SYSCHAR:
 687                                 case Msg.WM_KEYUP:
 688                                 case Msg.WM_SYSKEYUP:
 689                                         Message m;
 690                                         m = Message.Create(msg.hwnd, (int)msg.message, msg.wParam, msg.lParam);
 691
 692                                         Control c;
 693                                         c = Control.FromHandle(msg.hwnd);
 694
 695 #if NET_2_0
 696                                         // If we have a control with keyboard capture (usually a *Strip)
 697                                         // give it the message, and then drop the message
 698                                         if (keyboard_capture != null) {
 699                                                 // WM_SYSKEYUP does not make it into ProcessCmdKey, so do it here
 700                                                 if ((Msg)m.Msg == Msg.WM_SYSKEYUP)
 701                                                         if (m.WParam.ToInt32() == (int)Keys.Menu) {
 702                                                                 keyboard_capture.GetTopLevelToolStrip ().Dismiss (ToolStripDropDownCloseReason.Keyboard);
 703                                                                 continue;
 704                                                         }
 705
 706                                                 m.HWnd = keyboard_capture.Handle;
 707
 708                                                 if (keyboard_capture.PreProcessControlMessageInternal (ref m) != PreProcessControlState.MessageProcessed && (m.Msg == (int)Msg.WM_KEYDOWN && !keyboard_capture.ProcessControlMnemonic ((char)m.WParam))) {
 709                                                         if (c == null || c.Parent == null || !(c.Parent is ToolStrip))
 710                                                                 continue;
 711                                                         else
 712                                                                 m.HWnd = msg.hwnd;
 713                                                 } else
 714                                                         continue;
 715                                         }
 716 #endif
 717
 718                                         if ((c != null) && c.PreProcessControlMessageInternal (ref m) != PreProcessControlState.MessageProcessed) {
 719                                                 goto default;
 720                                         }
 721                                         break;
 722 #if NET_2_0
 723                                 case Msg.WM_LBUTTONDOWN:
 724                                 case Msg.WM_MBUTTONDOWN:
 725                                 case Msg.WM_RBUTTONDOWN:
 726                                         if (keyboard_capture != null) {
 727                                                 Control c2 = Control.FromHandle (msg.hwnd);
 728
 729                                                 // If we clicked a ToolStrip, we have to make sure it isn't
 730                                                 // the one we are on, or any of its parents or children
 731                                                 // If we clicked off the dropped down menu, release everything
 732                                                 if (c2 is ToolStrip) {
 733                                                         if ((c2 as ToolStrip).GetTopLevelToolStrip () != keyboard_capture.GetTopLevelToolStrip ())
 734                                                                 ToolStripManager.FireAppClicked ();
 735                                                 } else
 736                                                         ToolStripManager.FireAppClicked ();
 737                                         }
 738
 739                                         goto default;
 740 #endif
 741                                 case Msg.WM_QUIT:
 742                                         quit = true; // make sure we exit
 743                                         break;
 744                                 default:
 745                                         XplatUI.TranslateMessage(ref msg);
 746                                         XplatUI.DispatchMessage(ref msg);
 747                                         break;
 748                                 }
 749
 750                                 // Handle exit, Form might have received WM_CLOSE and set 'closing' in response
 751                                 if ((context.MainForm != null) && (context.MainForm.closing || (Modal && !context.MainForm.Visible))) {
 752                                         if (!Modal) {
 753                                                 XplatUI.PostQuitMessage(0);
 754                                         } else {
 755                                                 break;
 756                                         }
 757                                 }
 758                         }
 759                         #if DebugRunLoop
 760                                 Console.WriteLine("   RunLoop loop left");
 761                         #endif
 762
 763                         thread.MessageLoop = false;
 764                         XplatUI.EndLoop(Thread.CurrentThread);
 765
 766                         if (Modal) {
 767                                 Form old = context.MainForm;
 768
 769                                 context.MainForm = null;
 770
 771                                 EnableFormsForModalLoop (toplevels, context);
 772
 773                                 if (context.MainForm != null && context.MainForm.IsHandleCreated) {
 774                                         XplatUI.SetModal(context.MainForm.Handle, false);
 775                                 }
 776                                 #if DebugRunLoop
 777                                         Console.WriteLine("   Done with the SetModal");
 778                                 #endif
 779                                 old.RaiseCloseEvents (true);
 780                                 old.is_modal = false;
 781                         }
 782
 783                         #if DebugRunLoop
 784                                 Console.WriteLine("Leaving RunLoop(Modal={0}, Form={1})", Modal, context.MainForm != null ? context.MainForm.ToString() : "NULL");
 785                         #endif
 786                         if (context.MainForm != null) {
 787                                 context.MainForm.context = null;
 788                                 context.MainForm = null;
 789                         }
 790
 791                         thread.Context = previous_thread_context;
 792
 793                         if (!Modal) {
 794                                 thread.Exit();
 795                         }
 796                 }
 797
 798                 #endregion      // Public Static Methods
 799
 800                 #region Events
 801                 public static event EventHandler        ApplicationExit;
 802
 803                 public static event EventHandler        Idle {
 804                         add {
 805                                 XplatUI.Idle += value;
 806                         }
 807                         remove {
 808                                 XplatUI.Idle -= value;
 809                         }
 810                 }
 811
 812                 public static event EventHandler        ThreadExit;
 813                 public static event ThreadExceptionEventHandler ThreadException;
 814
 815 #if NET_2_0
 816                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 817                 public static event EventHandler EnterThreadModal;
 818
 819                 [EditorBrowsable (EditorBrowsableState.Advanced)]
 820                 public static event EventHandler LeaveThreadModal;
 821 #endif
 822                 #endregion      // Events
 823
 824                 #region Public Delegates
 825 #if NET_2_0
 826                 public delegate bool MessageLoopCallback ();
 827 #endif
 828                 #endregion
 829
 830                 #region Internal Properties
 831 #if NET_2_0
 832                 internal static ToolStrip KeyboardCapture {
 833                         get { return keyboard_capture; }
 834                         set { keyboard_capture = value; }
 835                 }
 836 #endif
 837                 #endregion
 838
 839                 #region Internal Methods
 840                 internal static void AddForm (Form f)
 841                 {
 842                         lock (forms)
 843                                 forms.Add (f);
 844                 }
 845
 846                 internal static void RemoveForm (Form f)
 847                 {
 848                         lock (forms)
 849                                 forms.Remove (f);
 850                 }
 851                 #endregion
 852         }
 853 }