src/msw/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "app.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/pen.h"
  37     #include "wx/brush.h"
  38     #include "wx/cursor.h"
  39     #include "wx/icon.h"
  40     #include "wx/palette.h"
  41     #include "wx/dc.h"
  42     #include "wx/dialog.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45     #include "wx/dynarray.h"
  46     #include "wx/wxchar.h"
  47     #include "wx/icon.h"
  48 #endif
  49
  50 #include "wx/log.h"
  51 #include "wx/module.h"
  52
  53 #include "wx/msw/private.h"
  54
  55 #if wxUSE_THREADS
  56     #include "wx/thread.h"
  57
  58     // define the array of MSG strutures
  59     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  60
  61     #include "wx/arrimpl.cpp"
  62
  63     WX_DEFINE_OBJARRAY(wxMsgArray);
  64 #endif // wxUSE_THREADS
  65
  66 #if wxUSE_WX_RESOURCES
  67     #include "wx/resource.h"
  68 #endif
  69
  70 #if wxUSE_TOOLTIPS
  71     #include "wx/tooltip.h"
  72 #endif // wxUSE_TOOLTIPS
  73
  74 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
  75 // compilers don't support it (missing headers, libs, ...)
  76 #if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__)
  77     #undef wxUSE_OLE
  78
  79     #define  wxUSE_OLE 0
  80 #endif // broken compilers
  81
  82 #if wxUSE_OLE
  83     #include <ole2.h>
  84 #endif
  85
  86 #include <string.h>
  87 #include <ctype.h>
  88
  89 #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__))
  90     #include <commctrl.h>
  91 #endif
  92
  93 #ifndef __WXMICROWIN__
  94 #include "wx/msw/msvcrt.h"
  95 #endif
  96
  97 // ----------------------------------------------------------------------------
  98 // conditional compilation
  99 // ----------------------------------------------------------------------------
 100
 101 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
 102 // defined before) and shows us what common control features are available
 103 // during the compile time (it doesn't mean that they will be available during
 104 // the run-time, use GetComCtl32Version() to test for them!). The possible
 105 // values are:
 106 //
 107 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 108 // 0x0300                      4.70              IE 3.x
 109 // 0x0400                      4.71              IE 4.0
 110 // 0x0401                      4.72              IE 4.01 and Win98
 111 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 112
 113 #ifndef _WIN32_IE
 114     // minimal set of features by default
 115     #define _WIN32_IE 0x0200
 116 #endif
 117
 118 #if _WIN32_IE >= 0x0300 \
 119     && !( defined(__MINGW32__) && !wxCHECK_W32API_VERSION( 1, 0 ) )
 120     #include <shlwapi.h>
 121 #endif
 122
 123 // ---------------------------------------------------------------------------
 124 // global variables
 125 // ---------------------------------------------------------------------------
 126
 127 extern wxChar *wxBuffer;
 128 extern wxList *wxWinHandleList;
 129 extern wxList WXDLLEXPORT wxPendingDelete;
 130 #ifndef __WXMICROWIN__
 131 extern void wxSetKeyboardHook(bool doIt);
 132 #endif
 133
 134 MSG s_currentMsg;
 135 wxApp *wxTheApp = NULL;
 136
 137 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 138 //     with NR suffix - wxWindow::MSWCreate() supposes this
 139 const wxChar *wxFrameClassName         = wxT("wxFrameClass");
 140 const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
 141 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 142 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 143 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 144 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 145 const wxChar *wxPanelClassName         = wxT("wxPanelClass");
 146 const wxChar *wxPanelClassNameNR       = wxT("wxPanelClassNR");
 147 const wxChar *wxCanvasClassName        = wxT("wxCanvasClass");
 148 const wxChar *wxCanvasClassNameNR      = wxT("wxCanvasClassNR");
 149
 150 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 151 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 152 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 153
 154 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 155 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 156 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 157
 158 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 159
 160 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 161
 162 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
 163 //       needs compiler support for Win32 SEH. Others (especially Borland)
 164 //       probably have it too, but I'm not sure about how it works
 165 // JACS: get 'Cannot use __try in functions that require unwinding
 166 // in Unicode mode, so disabling.
 167 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
 168     #undef wxUSE_ON_FATAL_EXCEPTION
 169     #define wxUSE_ON_FATAL_EXCEPTION 0
 170 #endif // VC++
 171
 172 #if wxUSE_ON_FATAL_EXCEPTION
 173     static bool gs_handleExceptions = FALSE;
 174 #endif
 175
 176 // ===========================================================================
 177 // implementation
 178 // ===========================================================================
 179
 180 // ---------------------------------------------------------------------------
 181 // wxApp
 182 // ---------------------------------------------------------------------------
 183
 184 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 185
 186 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 187     EVT_IDLE(wxApp::OnIdle)
 188     EVT_END_SESSION(wxApp::OnEndSession)
 189     EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 190 END_EVENT_TABLE()
 191
 192 //// Initialize
 193 bool wxApp::Initialize()
 194 {
 195     // the first thing to do is to check if we're trying to run an Unicode
 196     // program under Win9x - if so, abort right now as it has no chance to
 197     // work
 198 #if wxUSE_UNICODE
 199     if ( wxGetOsVersion() != wxWINDOWS_NT )
 200     {
 201         // note that we can use MessageBoxW() as it's implemented even under
 202         // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
 203         // used by wxLocale are not
 204         ::MessageBox
 205         (
 206          NULL,
 207          _T("This program uses Unicode and requires Windows NT/2000.\nProgram aborted."),
 208          _T("wxWindows Fatal Error"),
 209          MB_ICONERROR | MB_OK
 210         );
 211
 212         return FALSE;
 213     }
 214 #endif // wxUSE_UNICODE
 215
 216     // Some people may wish to use this, but
 217     // probably it shouldn't be here by default.
 218 #ifdef __WXDEBUG__
 219     //    wxRedirectIOToConsole();
 220 #endif
 221
 222     wxBuffer = new wxChar[1500]; // FIXME
 223
 224     wxClassInfo::InitializeClasses();
 225
 226 #if wxUSE_THREADS
 227     wxPendingEventsLocker = new wxCriticalSection;
 228 #endif
 229
 230     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 231     wxTheColourDatabase->Initialize();
 232
 233     wxInitializeStockLists();
 234     wxInitializeStockObjects();
 235
 236 #if wxUSE_WX_RESOURCES
 237     wxInitializeResourceSystem();
 238 #endif
 239
 240     wxBitmap::InitStandardHandlers();
 241
 242 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 243     InitCommonControls();
 244 #endif // __WIN95__
 245
 246 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 247
 248 #ifdef __WIN16__
 249     // for OLE, enlarge message queue to be as large as possible
 250     int iMsg = 96;
 251     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 252         ;
 253 #endif // Win16
 254
 255     // we need to initialize OLE library
 256     if ( FAILED(::OleInitialize(NULL)) )
 257         wxLogError(_("Cannot initialize OLE"));
 258
 259 #endif // wxUSE_OLE
 260
 261 #if wxUSE_CTL3D
 262     if (!Ctl3dRegister(wxhInstance))
 263         wxLogError(wxT("Cannot register CTL3D"));
 264
 265     Ctl3dAutoSubclass(wxhInstance);
 266 #endif // wxUSE_CTL3D
 267
 268     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 269 #if 0
 270     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 271     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 272     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 273
 274     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 275     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 276     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 277 #endif // 0
 278
 279     RegisterWindowClasses();
 280
 281 #ifndef __WXMICROWIN__
 282     // Create the brush for disabling bitmap buttons
 283
 284     LOGBRUSH lb;
 285     lb.lbStyle = BS_PATTERN;
 286     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 287     if ( lb.lbHatch )
 288     {
 289         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 290         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 291     }
 292     //else: wxWindows resources are probably not linked in
 293 #endif
 294
 295 #if wxUSE_PENWINDOWS
 296     wxRegisterPenWin();
 297 #endif
 298
 299     wxWinHandleList = new wxList(wxKEY_INTEGER);
 300
 301     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 302     // PLEASE DO NOT ALTER THIS.
 303 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 304     extern char wxDummyChar;
 305     if (wxDummyChar) wxDummyChar++;
 306 #endif
 307
 308 #ifndef __WXMICROWIN__
 309     wxSetKeyboardHook(TRUE);
 310 #endif
 311
 312     wxModule::RegisterModules();
 313     if (!wxModule::InitializeModules())
 314         return FALSE;
 315     return TRUE;
 316 }
 317
 318 // ---------------------------------------------------------------------------
 319 // RegisterWindowClasses
 320 // ---------------------------------------------------------------------------
 321
 322 // TODO we should only register classes really used by the app. For this it
 323 //      would be enough to just delay the class registration until an attempt
 324 //      to create a window of this class is made.
 325 bool wxApp::RegisterWindowClasses()
 326 {
 327     WNDCLASS wndclass;
 328
 329     // for each class we register one with CS_(V|H)REDRAW style and one
 330     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 331     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 332     static const long styleNoRedraw = CS_DBLCLKS;
 333
 334     // the fields which are common to all classes
 335     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 336     wndclass.cbClsExtra    = 0;
 337     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 338     wndclass.hInstance     = wxhInstance;
 339     wndclass.hIcon         = (HICON) NULL;
 340     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 341     wndclass.lpszMenuName  = NULL;
 342
 343     // Register the frame window class.
 344     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 345     wndclass.lpszClassName = wxFrameClassName;
 346     wndclass.style         = styleNormal;
 347
 348     if ( !RegisterClass(&wndclass) )
 349     {
 350         wxLogLastError(wxT("RegisterClass(frame)"));
 351
 352         return FALSE;
 353     }
 354
 355     // "no redraw" frame
 356     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 357     wndclass.style         = styleNoRedraw;
 358
 359     if ( !RegisterClass(&wndclass) )
 360     {
 361         wxLogLastError(wxT("RegisterClass(no redraw frame)"));
 362
 363         return FALSE;
 364     }
 365
 366     // Register the MDI frame window class.
 367     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 368     wndclass.lpszClassName = wxMDIFrameClassName;
 369     wndclass.style         = styleNormal;
 370
 371     if ( !RegisterClass(&wndclass) )
 372     {
 373         wxLogLastError(wxT("RegisterClass(MDI parent)"));
 374
 375         return FALSE;
 376     }
 377
 378     // "no redraw" MDI frame
 379     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 380     wndclass.style         = styleNoRedraw;
 381
 382     if ( !RegisterClass(&wndclass) )
 383     {
 384         wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
 385
 386         return FALSE;
 387     }
 388
 389     // Register the MDI child frame window class.
 390     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 391     wndclass.lpszClassName = wxMDIChildFrameClassName;
 392     wndclass.style         = styleNormal;
 393
 394     if ( !RegisterClass(&wndclass) )
 395     {
 396         wxLogLastError(wxT("RegisterClass(MDI child)"));
 397
 398         return FALSE;
 399     }
 400
 401     // "no redraw" MDI child frame
 402     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 403     wndclass.style         = styleNoRedraw;
 404
 405     if ( !RegisterClass(&wndclass) )
 406     {
 407         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
 408
 409         return FALSE;
 410     }
 411
 412     // Register the panel window class.
 413     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 414     wndclass.lpszClassName = wxPanelClassName;
 415     wndclass.style         = styleNormal;
 416
 417     if ( !RegisterClass(&wndclass) )
 418     {
 419         wxLogLastError(wxT("RegisterClass(panel)"));
 420
 421         return FALSE;
 422     }
 423
 424     // Register the no redraw panel window class.
 425     wndclass.lpszClassName = wxPanelClassNameNR;
 426     wndclass.style         = styleNoRedraw;
 427
 428     if ( !RegisterClass(&wndclass) )
 429     {
 430         wxLogLastError(wxT("RegisterClass(no redraw panel)"));
 431
 432         return FALSE;
 433     }
 434
 435     // Register the canvas and textsubwindow class name
 436     wndclass.hbrBackground = (HBRUSH)NULL;
 437     wndclass.lpszClassName = wxCanvasClassName;
 438
 439     if ( !RegisterClass(&wndclass) )
 440     {
 441         wxLogLastError(wxT("RegisterClass(canvas)"));
 442
 443         return FALSE;
 444     }
 445
 446     wndclass.lpszClassName = wxCanvasClassNameNR;
 447     wndclass.style         = styleNoRedraw;
 448     if ( !RegisterClass(&wndclass) )
 449     {
 450         wxLogLastError(wxT("RegisterClass(no redraw canvas)"));
 451
 452         return FALSE;
 453     }
 454
 455     return TRUE;
 456 }
 457
 458 // ---------------------------------------------------------------------------
 459 // Convert Windows to argc, argv style
 460 // ---------------------------------------------------------------------------
 461
 462 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 463 {
 464     wxStringList args;
 465
 466     wxString cmdLine(lpCmdLine);
 467     int count = 0;
 468
 469     // Get application name
 470     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 471     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 472
 473     args.Add(name);
 474     count++;
 475
 476     wxStrcpy(name, wxFileNameFromPath(name));
 477     wxStripExtension(name);
 478     wxTheApp->SetAppName(name);
 479
 480     // Break up string
 481     // Treat strings enclosed in double-quotes as single arguments
 482     int i = 0;
 483     int len = cmdLine.Length();
 484     while (i < len)
 485     {
 486         // Skip whitespace
 487         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 488             i ++;
 489
 490         if (i < len)
 491         {
 492             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 493             {
 494                 i ++;
 495                 int first = i;
 496                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 497                     i ++;
 498
 499                 wxString arg(cmdLine.Mid(first, (i - first)));
 500
 501                 args.Add(arg);
 502                 count ++;
 503
 504                 if (i < len)
 505                     i ++; // Skip past 2nd quote
 506             }
 507             else // Unquoted argument
 508             {
 509                 int first = i;
 510                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 511                     i ++;
 512
 513                 wxString arg(cmdLine.Mid(first, (i - first)));
 514
 515                 args.Add(arg);
 516                 count ++;
 517             }
 518         }
 519     }
 520
 521     wxTheApp->argv = new wxChar*[count + 1];
 522     for (i = 0; i < count; i++)
 523     {
 524         wxString arg(args[i]);
 525         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 526     }
 527     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 528     wxTheApp->argc = count;
 529 }
 530
 531 //// Cleans up any wxWindows internal structures left lying around
 532
 533 void wxApp::CleanUp()
 534 {
 535     //// COMMON CLEANUP
 536
 537 #if wxUSE_LOG
 538     // flush the logged messages if any and install a 'safer' log target: the
 539     // default one (wxLogGui) can't be used after the resources are freed just
 540     // below and the user suppliedo ne might be even more unsafe (using any
 541     // wxWindows GUI function is unsafe starting from now)
 542     wxLog::DontCreateOnDemand();
 543
 544     // this will flush the old messages if any
 545     delete wxLog::SetActiveTarget(new wxLogStderr);
 546 #endif // wxUSE_LOG
 547
 548     // One last chance for pending objects to be cleaned up
 549     wxTheApp->DeletePendingObjects();
 550
 551     wxModule::CleanUpModules();
 552
 553 #if wxUSE_WX_RESOURCES
 554     wxCleanUpResourceSystem();
 555
 556     //  wxDefaultResourceTable->ClearTable();
 557 #endif
 558
 559     wxDeleteStockObjects();
 560
 561     // Destroy all GDI lists, etc.
 562     wxDeleteStockLists();
 563
 564     delete wxTheColourDatabase;
 565     wxTheColourDatabase = NULL;
 566
 567     wxBitmap::CleanUpHandlers();
 568
 569     delete[] wxBuffer;
 570     wxBuffer = NULL;
 571
 572     //// WINDOWS-SPECIFIC CLEANUP
 573
 574 #ifndef __WXMICROWIN__
 575     wxSetKeyboardHook(FALSE);
 576 #endif
 577
 578 #if wxUSE_PENWINDOWS
 579     wxCleanUpPenWin();
 580 #endif
 581
 582     if (wxSTD_FRAME_ICON)
 583         DestroyIcon(wxSTD_FRAME_ICON);
 584     if (wxSTD_MDICHILDFRAME_ICON)
 585         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 586     if (wxSTD_MDIPARENTFRAME_ICON)
 587         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 588
 589     if (wxDEFAULT_FRAME_ICON)
 590         DestroyIcon(wxDEFAULT_FRAME_ICON);
 591     if (wxDEFAULT_MDICHILDFRAME_ICON)
 592         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 593     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 594         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 595
 596     if ( wxDisableButtonBrush )
 597         ::DeleteObject( wxDisableButtonBrush );
 598
 599 #if wxUSE_OLE
 600     ::OleUninitialize();
 601 #endif
 602
 603 #if wxUSE_CTL3D
 604     Ctl3dUnregister(wxhInstance);
 605 #endif
 606
 607     if (wxWinHandleList)
 608         delete wxWinHandleList;
 609
 610     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 611     // create a module for that as it's part of the core.
 612     delete wxPendingEvents;
 613
 614 #if wxUSE_THREADS
 615     delete wxPendingEventsLocker;
 616     // If we don't do the following, we get an apparent memory leak
 617 #if wxUSE_VALIDATORS
 618     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 619 #endif // wxUSE_VALIDATORS
 620 #endif // wxUSE_THREADS
 621
 622     wxClassInfo::CleanUpClasses();
 623
 624     delete wxTheApp;
 625     wxTheApp = NULL;
 626
 627 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 628     // At this point we want to check if there are any memory
 629     // blocks that aren't part of the wxDebugContext itself,
 630     // as a special case. Then when dumping we need to ignore
 631     // wxDebugContext, too.
 632     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 633     {
 634         wxLogMessage(wxT("There were memory leaks."));
 635         wxDebugContext::Dump();
 636         wxDebugContext::PrintStatistics();
 637     }
 638     //  wxDebugContext::SetStream(NULL, NULL);
 639 #endif
 640
 641 #if wxUSE_LOG
 642     // do it as the very last thing because everything else can log messages
 643     delete wxLog::SetActiveTarget(NULL);
 644 #endif // wxUSE_LOG
 645 }
 646
 647 //----------------------------------------------------------------------
 648 // Entry point helpers, used by wxPython
 649 //----------------------------------------------------------------------
 650
 651 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 652 {
 653     return wxApp::Initialize();
 654 }
 655
 656 int WXDLLEXPORT wxEntryInitGui()
 657 {
 658     return wxTheApp->OnInitGui();
 659 }
 660
 661 void WXDLLEXPORT wxEntryCleanup()
 662 {
 663     wxApp::CleanUp();
 664 }
 665
 666
 667 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 668
 669 // temporarily disable this warning which would be generated in release builds
 670 // because of __try
 671 #ifdef __VISUALC__
 672     #pragma warning(disable: 4715) // not all control paths return a value
 673 #endif // Visual C++
 674
 675 //----------------------------------------------------------------------
 676 // Main wxWindows entry point
 677 //----------------------------------------------------------------------
 678 int wxEntry(WXHINSTANCE hInstance,
 679             WXHINSTANCE WXUNUSED(hPrevInstance),
 680             char *lpCmdLine,
 681             int nCmdShow,
 682             bool enterLoop)
 683 {
 684     // do check for memory leaks on program exit
 685     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 686     //  deallocated memory which may be used to simulate low-memory condition)
 687 #ifndef __WXMICROWIN__
 688     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 689 #endif
 690
 691 #ifdef __MWERKS__
 692 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 693     // This seems to be necessary since there are 'rogue'
 694     // objects present at this point (perhaps global objects?)
 695     // Setting a checkpoint will ignore them as far as the
 696     // memory checking facility is concerned.
 697     // Of course you may argue that memory allocated in globals should be
 698     // checked, but this is a reasonable compromise.
 699     wxDebugContext::SetCheckpoint();
 700 #endif
 701 #endif
 702
 703     // take everything into a try-except block to be able to call
 704     // OnFatalException() if necessary
 705 #if wxUSE_ON_FATAL_EXCEPTION
 706     __try {
 707 #endif
 708         wxhInstance = (HINSTANCE) hInstance;
 709
 710         if (!wxEntryStart(0,0))
 711             return 0;
 712
 713         // create the application object or ensure that one already exists
 714         if (!wxTheApp)
 715         {
 716             // The app may have declared a global application object, but we recommend
 717             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 718             // function for delayed, dynamic app object construction.
 719             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 720                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 721
 722             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 723         }
 724
 725         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 726
 727         // save the WinMain() parameters
 728         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 729         wxTheApp->m_nCmdShow = nCmdShow;
 730
 731         // We really don't want timestamps by default, because it means
 732         // we can't simply double-click on the error message and get to that
 733         // line in the source. So VC++ at least, let's have a sensible default.
 734 #ifdef __VISUALC__
 735         wxLog::SetTimestamp(NULL);
 736 #endif
 737
 738         int retValue = 0;
 739
 740         // it is common to create a modal dialog in OnInit() (to ask/notify the
 741         // user about something) but it wouldn't work if we don't change the
 742         // "exit on delete last frame" flag here as when this dialog is
 743         // deleted, the app would terminate (it was the last top level window
 744         // as the main frame wasn't created yet!), so disable this behaviour
 745         // temproarily
 746         bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
 747         wxTheApp->SetExitOnFrameDelete(FALSE);
 748
 749         // init the app
 750         retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 751
 752         // restore the old flag value
 753         wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
 754
 755         if ( retValue == 0 )
 756         {
 757             if ( enterLoop )
 758             {
 759                 // run the main loop
 760                 retValue = wxTheApp->OnRun();
 761             }
 762             else
 763             {
 764                 // we want to initialize, but not run or exit immediately.
 765                 return 1;
 766             }
 767         }
 768         //else: app initialization failed, so we skipped OnRun()
 769
 770         wxWindow *topWindow = wxTheApp->GetTopWindow();
 771         if ( topWindow )
 772         {
 773             // Forcibly delete the window.
 774             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 775                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 776             {
 777                 topWindow->Close(TRUE);
 778                 wxTheApp->DeletePendingObjects();
 779             }
 780             else
 781             {
 782                 delete topWindow;
 783                 wxTheApp->SetTopWindow(NULL);
 784             }
 785         }
 786
 787         wxTheApp->OnExit();
 788
 789         wxEntryCleanup();
 790
 791         return retValue;
 792
 793 #if wxUSE_ON_FATAL_EXCEPTION
 794     }
 795     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 796                                    : EXCEPTION_CONTINUE_SEARCH ) {
 797         if ( wxTheApp )
 798         {
 799            // give the user a chance to do something special about this
 800            wxTheApp->OnFatalException();
 801         }
 802
 803         ::ExitProcess(3); // the same exit code as abort()
 804
 805         // NOTREACHED
 806     }
 807 #endif // wxUSE_ON_FATAL_EXCEPTION
 808 }
 809
 810 // restore warning state
 811 #ifdef __VISUALC__
 812     #pragma warning(default: 4715) // not all control paths return a value
 813 #endif // Visual C++
 814
 815 #else /*  _WINDLL  */
 816
 817 //----------------------------------------------------------------------
 818 // Entry point for wxWindows + the App in a DLL
 819 //----------------------------------------------------------------------
 820
 821 int wxEntry(WXHINSTANCE hInstance)
 822 {
 823     wxhInstance = (HINSTANCE) hInstance;
 824     wxEntryStart(0, 0);
 825
 826     // The app may have declared a global application object, but we recommend
 827     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 828     // for delayed, dynamic app object construction.
 829     if (!wxTheApp)
 830     {
 831         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 832                      "No initializer - use IMPLEMENT_APP macro." );
 833
 834         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 835     }
 836
 837     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 838
 839     wxTheApp->argc = 0;
 840     wxTheApp->argv = NULL;
 841
 842     wxEntryInitGui();
 843
 844     wxTheApp->OnInit();
 845
 846     wxWindow *topWindow = wxTheApp->GetTopWindow();
 847     if ( topWindow && topWindow->GetHWND())
 848     {
 849         topWindow->Show(TRUE);
 850     }
 851
 852     return 1;
 853 }
 854 #endif // _WINDLL
 855
 856 //// Static member initialization
 857
 858 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 859
 860 wxApp::wxApp()
 861 {
 862     argc = 0;
 863     argv = NULL;
 864     m_printMode = wxPRINT_WINDOWS;
 865     m_auto3D = TRUE;
 866 }
 867
 868 wxApp::~wxApp()
 869 {
 870     // Delete command-line args
 871     int i;
 872     for (i = 0; i < argc; i++)
 873     {
 874         delete[] argv[i];
 875     }
 876     delete[] argv;
 877 }
 878
 879 bool wxApp::Initialized()
 880 {
 881 #ifndef _WINDLL
 882     if (GetTopWindow())
 883         return TRUE;
 884     else
 885         return FALSE;
 886 #else // Assume initialized if DLL (no way of telling)
 887     return TRUE;
 888 #endif
 889 }
 890
 891 /*
 892  * Get and process a message, returning FALSE if WM_QUIT
 893  * received (and also set the flag telling the app to exit the main loop)
 894  *
 895  */
 896 bool wxApp::DoMessage()
 897 {
 898     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 899     if ( rc == 0 )
 900     {
 901         // got WM_QUIT
 902         m_keepGoing = FALSE;
 903
 904         return FALSE;
 905     }
 906     else if ( rc == -1 )
 907     {
 908         // should never happen, but let's test for it nevertheless
 909         wxLogLastError(wxT("GetMessage"));
 910     }
 911     else
 912     {
 913 #if wxUSE_THREADS
 914         wxASSERT_MSG( wxThread::IsMain(),
 915                       wxT("only the main thread can process Windows messages") );
 916
 917         static bool s_hadGuiLock = TRUE;
 918         static wxMsgArray s_aSavedMessages;
 919
 920         // if a secondary thread owns is doing GUI calls, save all messages for
 921         // later processing - we can't process them right now because it will
 922         // lead to recursive library calls (and we're not reentrant)
 923         if ( !wxGuiOwnedByMainThread() )
 924         {
 925             s_hadGuiLock = FALSE;
 926
 927             // leave out WM_COMMAND messages: too dangerous, sometimes
 928             // the message will be processed twice
 929             if ( !wxIsWaitingForThread() ||
 930                     s_currentMsg.message != WM_COMMAND )
 931             {
 932                 s_aSavedMessages.Add(s_currentMsg);
 933             }
 934
 935             return TRUE;
 936         }
 937         else
 938         {
 939             // have we just regained the GUI lock? if so, post all of the saved
 940             // messages
 941             //
 942             // FIXME of course, it's not _exactly_ the same as processing the
 943             //       messages normally - expect some things to break...
 944             if ( !s_hadGuiLock )
 945             {
 946                 s_hadGuiLock = TRUE;
 947
 948                 size_t count = s_aSavedMessages.Count();
 949                 for ( size_t n = 0; n < count; n++ )
 950                 {
 951                     MSG& msg = s_aSavedMessages[n];
 952
 953                     if ( !ProcessMessage((WXMSG *)&msg) )
 954                     {
 955                         ::TranslateMessage(&msg);
 956                         ::DispatchMessage(&msg);
 957                     }
 958                 }
 959
 960                 s_aSavedMessages.Empty();
 961             }
 962         }
 963 #endif // wxUSE_THREADS
 964
 965         // Process the message
 966         DoMessage((WXMSG *)&s_currentMsg);
 967     }
 968
 969     return TRUE;
 970 }
 971
 972 void wxApp::DoMessage(WXMSG *pMsg)
 973 {
 974     if ( !ProcessMessage(pMsg) )
 975     {
 976         ::TranslateMessage((MSG *)pMsg);
 977         ::DispatchMessage((MSG *)pMsg);
 978     }
 979 }
 980
 981 /*
 982  * Keep trying to process messages until WM_QUIT
 983  * received.
 984  *
 985  * If there are messages to be processed, they will all be
 986  * processed and OnIdle will not be called.
 987  * When there are no more messages, OnIdle is called.
 988  * If OnIdle requests more time,
 989  * it will be repeatedly called so long as there are no pending messages.
 990  * A 'feature' of this is that once OnIdle has decided that no more processing
 991  * is required, then it won't get processing time until further messages
 992  * are processed (it'll sit in DoMessage).
 993  */
 994
 995 int wxApp::MainLoop()
 996 {
 997     m_keepGoing = TRUE;
 998
 999     while ( m_keepGoing )
1000     {
1001 #if wxUSE_THREADS
1002         wxMutexGuiLeaveOrEnter();
1003 #endif // wxUSE_THREADS
1004
1005         while ( !Pending() && ProcessIdle() )
1006             ;
1007
1008         // a message came or no more idle processing to do
1009         DoMessage();
1010     }
1011
1012     return s_currentMsg.wParam;
1013 }
1014
1015 // Returns TRUE if more time is needed.
1016 bool wxApp::ProcessIdle()
1017 {
1018     wxIdleEvent event;
1019     event.SetEventObject(this);
1020     ProcessEvent(event);
1021
1022     return event.MoreRequested();
1023 }
1024
1025 void wxApp::ExitMainLoop()
1026 {
1027     // VZ: why not ::PostQuitMessage()?
1028     m_keepGoing = FALSE;
1029 }
1030
1031 bool wxApp::Pending()
1032 {
1033     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
1034 }
1035
1036 void wxApp::Dispatch()
1037 {
1038     DoMessage();
1039 }
1040
1041 /*
1042  * Give all windows a chance to preprocess
1043  * the message. Some may have accelerator tables, or have
1044  * MDI complications.
1045  */
1046
1047 bool wxApp::ProcessMessage(WXMSG *wxmsg)
1048 {
1049     MSG *msg = (MSG *)wxmsg;
1050     HWND hWnd = msg->hwnd;
1051     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hWnd);
1052
1053 #if wxUSE_TOOLTIPS
1054     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1055     // popup the tooltip bubbles
1056     if ( wndThis && (msg->message == WM_MOUSEMOVE) )
1057     {
1058         wxToolTip *tt = wndThis->GetToolTip();
1059         if ( tt )
1060         {
1061             tt->RelayEvent(wxmsg);
1062         }
1063     }
1064 #endif // wxUSE_TOOLTIPS
1065
1066     // Try translations first; find the youngest window with
1067     // a translation table.
1068     wxWindow *wnd;
1069
1070     bool pastTopLevelWindow = FALSE;
1071     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1072     {
1073         if ( !pastTopLevelWindow && wnd->MSWTranslateMessage(wxmsg))
1074             return TRUE;
1075         if ( wnd->MSWProcessMessage(wxmsg) )
1076             return TRUE;
1077
1078         // stop at first top level window, i.e. don't try to process the key
1079         // strokes originating in a dialog using the accelerators of the parent
1080         // frame - this doesn't make much sense
1081         if ( wnd->IsTopLevel() )
1082             pastTopLevelWindow = TRUE;
1083     }
1084
1085     return FALSE;
1086 }
1087
1088 void wxApp::OnIdle(wxIdleEvent& event)
1089 {
1090     static bool s_inOnIdle = FALSE;
1091
1092     // Avoid recursion (via ProcessEvent default case)
1093     if ( s_inOnIdle )
1094         return;
1095
1096     s_inOnIdle = TRUE;
1097
1098     // If there are pending events, we must process them: pending events
1099     // are either events to the threads other than main or events posted
1100     // with wxPostEvent() functions
1101     // GRG: I have moved this here so that all pending events are processed
1102     //   before starting to delete any objects. This behaves better (in
1103     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1104     //   behaviour. Changed Feb/2000 before 2.1.14
1105     ProcessPendingEvents();
1106
1107     // 'Garbage' collection of windows deleted with Close().
1108     DeletePendingObjects();
1109
1110 #if wxUSE_LOG
1111     // flush the logged messages if any
1112     wxLog::FlushActive();
1113 #endif // wxUSE_LOG
1114
1115     // Send OnIdle events to all windows
1116     if ( SendIdleEvents() )
1117     {
1118         // SendIdleEvents() returns TRUE if at least one window requested more
1119         // idle events
1120         event.RequestMore(TRUE);
1121     }
1122
1123     s_inOnIdle = FALSE;
1124 }
1125
1126 // Send idle event to all top-level windows
1127 bool wxApp::SendIdleEvents()
1128 {
1129     bool needMore = FALSE;
1130
1131     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1132     while (node)
1133     {
1134         wxWindow* win = node->GetData();
1135         if (SendIdleEvents(win))
1136             needMore = TRUE;
1137         node = node->GetNext();
1138     }
1139
1140     return needMore;
1141 }
1142
1143 // Send idle event to window and all subwindows
1144 bool wxApp::SendIdleEvents(wxWindow* win)
1145 {
1146     bool needMore = FALSE;
1147
1148     wxIdleEvent event;
1149     event.SetEventObject(win);
1150     win->GetEventHandler()->ProcessEvent(event);
1151
1152     if (event.MoreRequested())
1153         needMore = TRUE;
1154
1155     wxNode* node = win->GetChildren().First();
1156     while (node)
1157     {
1158         wxWindow* win = (wxWindow*) node->Data();
1159         if (SendIdleEvents(win))
1160             needMore = TRUE;
1161
1162         node = node->Next();
1163     }
1164     return needMore;
1165 }
1166
1167 void wxApp::DeletePendingObjects()
1168 {
1169     wxNode *node = wxPendingDelete.First();
1170     while (node)
1171     {
1172         wxObject *obj = (wxObject *)node->Data();
1173
1174         delete obj;
1175
1176         if (wxPendingDelete.Member(obj))
1177             delete node;
1178
1179         // Deleting one object may have deleted other pending
1180         // objects, so start from beginning of list again.
1181         node = wxPendingDelete.First();
1182     }
1183 }
1184
1185 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1186 {
1187     if (GetTopWindow())
1188         GetTopWindow()->Close(TRUE);
1189 }
1190
1191 // Default behaviour: close the application with prompts. The
1192 // user can veto the close, and therefore the end session.
1193 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1194 {
1195     if (GetTopWindow())
1196     {
1197         if (!GetTopWindow()->Close(!event.CanVeto()))
1198             event.Veto(TRUE);
1199     }
1200 }
1201
1202 /* static */
1203 int wxApp::GetComCtl32Version()
1204 {
1205 #ifdef __WXMICROWIN__
1206     return 0;
1207 #else
1208     // cache the result
1209     static int s_verComCtl32 = -1;
1210
1211     wxCRIT_SECT_DECLARE(csComCtl32);
1212     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1213
1214     if ( s_verComCtl32 == -1 )
1215     {
1216         // initally assume no comctl32.dll at all
1217         s_verComCtl32 = 0;
1218
1219         // do we have it?
1220         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1221
1222         // if so, then we can check for the version
1223         if ( hModuleComCtl32 )
1224         {
1225             // try to use DllGetVersion() if available in _headers_
1226             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1227                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1228                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1229                 if ( pfnDllGetVersion )
1230                 {
1231                     DLLVERSIONINFO dvi;
1232                     dvi.cbSize = sizeof(dvi);
1233
1234                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1235                     if ( FAILED(hr) )
1236                     {
1237                         wxLogApiError(_T("DllGetVersion"), hr);
1238                     }
1239                     else
1240                     {
1241                         // this is incompatible with _WIN32_IE values, but
1242                         // compatible with the other values returned by
1243                         // GetComCtl32Version()
1244                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1245                                             dvi.dwMinorVersion;
1246                     }
1247                 }
1248             #endif
1249                 // DllGetVersion() unavailable either during compile or
1250                 // run-time, try to guess the version otherwise
1251                 if ( !s_verComCtl32 )
1252                 {
1253                     // InitCommonControlsEx is unique to 4.70 and later
1254                     FARPROC theProc = ::GetProcAddress
1255                                         (
1256                                          hModuleComCtl32,
1257                                          "InitCommonControlsEx"
1258                                         );
1259
1260                     if ( !theProc )
1261                     {
1262                         // not found, must be 4.00
1263                         s_verComCtl32 = 400;
1264                     }
1265                     else
1266                     {
1267                         // many symbols appeared in comctl32 4.71, could use
1268                         // any of them except may be DllInstall
1269                         theProc = ::GetProcAddress
1270                                     (
1271                                      hModuleComCtl32,
1272                                      "InitializeFlatSB"
1273                                     );
1274                         if ( !theProc )
1275                         {
1276                             // not found, must be 4.70
1277                             s_verComCtl32 = 470;
1278                         }
1279                         else
1280                         {
1281                             // found, must be 4.71
1282                             s_verComCtl32 = 471;
1283                         }
1284                     }
1285                 }
1286         }
1287     }
1288
1289     return s_verComCtl32;
1290 #endif
1291 }
1292
1293 void wxExit()
1294 {
1295     wxLogError(_("Fatal error: exiting"));
1296
1297     wxApp::CleanUp();
1298     exit(0);
1299 }
1300
1301 // Yield to incoming messages
1302
1303 static bool gs_inYield = FALSE;
1304
1305 bool wxYield()
1306 {
1307     // disable log flushing from here because a call to wxYield() shouldn't
1308     // normally result in message boxes popping up &c
1309     wxLog::Suspend();
1310
1311 #ifdef __WXDEBUG__
1312     if (gs_inYield)
1313         wxFAIL_MSG( wxT("wxYield called recursively" ) );
1314 #endif
1315
1316     gs_inYield = TRUE;
1317
1318     // we don't want to process WM_QUIT from here - it should be processed in
1319     // the main event loop in order to stop it
1320     MSG msg;
1321     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1322             msg.message != WM_QUIT )
1323     {
1324 #if wxUSE_THREADS
1325         wxMutexGuiLeaveOrEnter();
1326 #endif // wxUSE_THREADS
1327
1328         if ( !wxTheApp->DoMessage() )
1329             break;
1330     }
1331
1332     // If they are pending events, we must process them.
1333     if (wxTheApp)
1334         wxTheApp->ProcessPendingEvents();
1335
1336     // let the logs be flashed again
1337     wxLog::Resume();
1338
1339     gs_inYield = FALSE;
1340
1341     return TRUE;
1342 }
1343
1344 // Yield to incoming messages; but fail silently if recursion is detected.
1345 bool wxYieldIfNeeded()
1346 {
1347     if (gs_inYield)
1348         return FALSE;
1349
1350     return wxYield();
1351 }
1352
1353 bool wxHandleFatalExceptions(bool doit)
1354 {
1355 #if wxUSE_ON_FATAL_EXCEPTION
1356     // assume this can only be called from the main thread
1357     gs_handleExceptions = doit;
1358
1359     return TRUE;
1360 #else
1361     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to sue this function"));
1362
1363         (void)doit;
1364     return FALSE;
1365 #endif
1366 }
1367
1368 //-----------------------------------------------------------------------------
1369 // wxWakeUpIdle
1370 //-----------------------------------------------------------------------------
1371
1372 void wxWakeUpIdle()
1373 {
1374     // Send the top window a dummy message so idle handler processing will
1375     // start up again.  Doing it this way ensures that the idle handler
1376     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1377     // the same for the main app thread only)
1378     wxWindow *topWindow = wxTheApp->GetTopWindow();
1379     if ( topWindow )
1380     {
1381         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1382         {
1383             // should never happen
1384             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1385         }
1386     }
1387 }
1388
1389 //-----------------------------------------------------------------------------
1390
1391 wxIcon
1392 wxApp::GetStdIcon(int which) const
1393 {
1394     switch(which)
1395     {
1396         case wxICON_INFORMATION:
1397             return wxIcon("wxICON_INFO");
1398
1399         case wxICON_QUESTION:
1400             return wxIcon("wxICON_QUESTION");
1401
1402         case wxICON_EXCLAMATION:
1403             return wxIcon("wxICON_WARNING");
1404
1405         default:
1406             wxFAIL_MSG(wxT("requested non existent standard icon"));
1407             // still fall through
1408
1409         case wxICON_HAND:
1410             return wxIcon("wxICON_ERROR");
1411     }
1412 }
1413
1414 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1415 // if in a separate file. So include it here to ensure it's linked.
1416 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1417 #include "main.cpp"
1418 #endif