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     #include "wx/log.h"
  49 #endif
  50
  51 #include "wx/cmdline.h"
  52 #include "wx/filename.h"
  53 #include "wx/module.h"
  54
  55 #include "wx/msw/private.h"
  56
  57 #if wxUSE_THREADS
  58     #include "wx/thread.h"
  59
  60     // define the array of MSG strutures
  61     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  62
  63     #include "wx/arrimpl.cpp"
  64
  65     WX_DEFINE_OBJARRAY(wxMsgArray);
  66 #endif // wxUSE_THREADS
  67
  68 #if wxUSE_WX_RESOURCES
  69     #include "wx/resource.h"
  70 #endif
  71
  72 #if wxUSE_TOOLTIPS
  73     #include "wx/tooltip.h"
  74 #endif // wxUSE_TOOLTIPS
  75
  76 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
  77 // compilers don't support it (missing headers, libs, ...)
  78 #if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__)
  79     #undef wxUSE_OLE
  80
  81     #define  wxUSE_OLE 0
  82 #endif // broken compilers
  83
  84 #if wxUSE_OLE
  85     #include <ole2.h>
  86 #endif
  87
  88 #include <string.h>
  89 #include <ctype.h>
  90
  91 #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__))
  92     #include <commctrl.h>
  93 #endif
  94
  95 #ifndef __WXMICROWIN__
  96 #include "wx/msw/msvcrt.h"
  97 #endif
  98
  99 // ----------------------------------------------------------------------------
 100 // conditional compilation
 101 // ----------------------------------------------------------------------------
 102
 103 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
 104 // defined before) and shows us what common control features are available
 105 // during the compile time (it doesn't mean that they will be available during
 106 // the run-time, use GetComCtl32Version() to test for them!). The possible
 107 // values are:
 108 //
 109 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 110 // 0x0300                      4.70              IE 3.x
 111 // 0x0400                      4.71              IE 4.0
 112 // 0x0401                      4.72              IE 4.01 and Win98
 113 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 114
 115 #ifndef _WIN32_IE
 116     // minimal set of features by default
 117     #define _WIN32_IE 0x0200
 118 #endif
 119
 120 #if _WIN32_IE >= 0x0300 && \
 121     (!defined(__MINGW32__) || wxCHECK_W32API_VERSION( 2, 0 ))
 122     #include <shlwapi.h>
 123 #endif
 124
 125 // ---------------------------------------------------------------------------
 126 // global variables
 127 // ---------------------------------------------------------------------------
 128
 129 extern wxChar *wxBuffer;
 130 extern wxList WXDLLEXPORT wxPendingDelete;
 131 #ifndef __WXMICROWIN__
 132 extern void wxSetKeyboardHook(bool doIt);
 133 #endif
 134
 135 MSG s_currentMsg;
 136 wxApp *wxTheApp = NULL;
 137
 138 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 139 //     with NR suffix - wxWindow::MSWCreate() supposes this
 140 const wxChar *wxCanvasClassName        = wxT("wxWindowClass");
 141 const wxChar *wxCanvasClassNameNR      = wxT("wxWindowClassNR");
 142 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 143 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 144 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 145 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 146
 147 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 148 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 149 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 150
 151 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 152 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 153 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 154
 155 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 156
 157 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 158
 159 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
 160 //       needs compiler support for Win32 SEH. Others (especially Borland)
 161 //       probably have it too, but I'm not sure about how it works
 162 // JACS: get 'Cannot use __try in functions that require unwinding
 163 // in Unicode mode, so disabling.
 164 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
 165     #undef wxUSE_ON_FATAL_EXCEPTION
 166     #define wxUSE_ON_FATAL_EXCEPTION 0
 167 #endif // VC++
 168
 169 #if wxUSE_ON_FATAL_EXCEPTION
 170     static bool gs_handleExceptions = FALSE;
 171 #endif
 172
 173 // ===========================================================================
 174 // implementation
 175 // ===========================================================================
 176
 177 // ---------------------------------------------------------------------------
 178 // wxApp
 179 // ---------------------------------------------------------------------------
 180
 181 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 182
 183 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 184     EVT_IDLE(wxApp::OnIdle)
 185     EVT_END_SESSION(wxApp::OnEndSession)
 186     EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 187 END_EVENT_TABLE()
 188
 189 //// Initialize
 190 bool wxApp::Initialize()
 191 {
 192     // the first thing to do is to check if we're trying to run an Unicode
 193     // program under Win9x w/o MSLU emulation layer - if so, abort right now
 194     // as it has no chance to work
 195 #if wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 196     if ( wxGetOsVersion() != wxWINDOWS_NT )
 197     {
 198         // note that we can use MessageBoxW() as it's implemented even under
 199         // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
 200         // used by wxLocale are not
 201         ::MessageBox
 202         (
 203          NULL,
 204          _T("This program uses Unicode and requires Windows NT/2000/XP.\nProgram aborted."),
 205          _T("wxWindows Fatal Error"),
 206          MB_ICONERROR | MB_OK
 207         );
 208
 209         return FALSE;
 210     }
 211 #endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 212
 213     wxBuffer = new wxChar[1500]; // FIXME
 214
 215     wxClassInfo::InitializeClasses();
 216
 217 #if wxUSE_THREADS
 218     wxPendingEventsLocker = new wxCriticalSection;
 219 #endif
 220
 221     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 222     wxTheColourDatabase->Initialize();
 223
 224     wxInitializeStockLists();
 225     wxInitializeStockObjects();
 226
 227 #if wxUSE_WX_RESOURCES
 228     wxInitializeResourceSystem();
 229 #endif
 230
 231     wxBitmap::InitStandardHandlers();
 232
 233 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 234     InitCommonControls();
 235 #endif // __WIN95__
 236
 237 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 238
 239 #ifdef __WIN16__
 240     // for OLE, enlarge message queue to be as large as possible
 241     int iMsg = 96;
 242     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 243         ;
 244 #endif // Win16
 245
 246 #if wxUSE_OLE
 247     // we need to initialize OLE library
 248     if ( FAILED(::OleInitialize(NULL)) )
 249         wxLogError(_("Cannot initialize OLE"));
 250 #endif
 251
 252 #endif // wxUSE_OLE
 253
 254 #if wxUSE_CTL3D
 255     if (!Ctl3dRegister(wxhInstance))
 256         wxLogError(wxT("Cannot register CTL3D"));
 257
 258     Ctl3dAutoSubclass(wxhInstance);
 259 #endif // wxUSE_CTL3D
 260
 261     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 262 #if 0
 263     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 264     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 265     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 266
 267     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 268     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 269     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 270 #endif // 0
 271
 272     RegisterWindowClasses();
 273
 274 #ifndef __WXMICROWIN__
 275     // Create the brush for disabling bitmap buttons
 276
 277     LOGBRUSH lb;
 278     lb.lbStyle = BS_PATTERN;
 279     lb.lbColor = 0;
 280     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 281     if ( lb.lbHatch )
 282     {
 283         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 284         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 285     }
 286     //else: wxWindows resources are probably not linked in
 287 #endif
 288
 289 #if wxUSE_PENWINDOWS
 290     wxRegisterPenWin();
 291 #endif
 292
 293     wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
 294
 295     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 296     // PLEASE DO NOT ALTER THIS.
 297 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 298     extern char wxDummyChar;
 299     if (wxDummyChar) wxDummyChar++;
 300 #endif
 301
 302 #ifndef __WXMICROWIN__
 303     wxSetKeyboardHook(TRUE);
 304 #endif
 305
 306     wxModule::RegisterModules();
 307     if (!wxModule::InitializeModules())
 308         return FALSE;
 309     return TRUE;
 310 }
 311
 312 // ---------------------------------------------------------------------------
 313 // RegisterWindowClasses
 314 // ---------------------------------------------------------------------------
 315
 316 // TODO we should only register classes really used by the app. For this it
 317 //      would be enough to just delay the class registration until an attempt
 318 //      to create a window of this class is made.
 319 bool wxApp::RegisterWindowClasses()
 320 {
 321     WNDCLASS wndclass;
 322     wxZeroMemory(wndclass);
 323
 324     // for each class we register one with CS_(V|H)REDRAW style and one
 325     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 326     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 327     static const long styleNoRedraw = CS_DBLCLKS;
 328
 329     // the fields which are common to all classes
 330     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 331     wndclass.hInstance     = wxhInstance;
 332     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 333
 334     // Register the frame window class.
 335     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 336     wndclass.lpszClassName = wxCanvasClassName;
 337     wndclass.style         = styleNormal;
 338
 339     if ( !RegisterClass(&wndclass) )
 340     {
 341         wxLogLastError(wxT("RegisterClass(frame)"));
 342     }
 343
 344     // "no redraw" frame
 345     wndclass.lpszClassName = wxCanvasClassNameNR;
 346     wndclass.style         = styleNoRedraw;
 347
 348     if ( !RegisterClass(&wndclass) )
 349     {
 350         wxLogLastError(wxT("RegisterClass(no redraw frame)"));
 351     }
 352
 353     // Register the MDI frame window class.
 354     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 355     wndclass.lpszClassName = wxMDIFrameClassName;
 356     wndclass.style         = styleNormal;
 357
 358     if ( !RegisterClass(&wndclass) )
 359     {
 360         wxLogLastError(wxT("RegisterClass(MDI parent)"));
 361     }
 362
 363     // "no redraw" MDI frame
 364     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 365     wndclass.style         = styleNoRedraw;
 366
 367     if ( !RegisterClass(&wndclass) )
 368     {
 369         wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
 370     }
 371
 372     // Register the MDI child frame window class.
 373     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 374     wndclass.lpszClassName = wxMDIChildFrameClassName;
 375     wndclass.style         = styleNormal;
 376
 377     if ( !RegisterClass(&wndclass) )
 378     {
 379         wxLogLastError(wxT("RegisterClass(MDI child)"));
 380     }
 381
 382     // "no redraw" MDI child frame
 383     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 384     wndclass.style         = styleNoRedraw;
 385
 386     if ( !RegisterClass(&wndclass) )
 387     {
 388         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
 389     }
 390
 391     return TRUE;
 392 }
 393
 394 // ---------------------------------------------------------------------------
 395 // UnregisterWindowClasses
 396 // ---------------------------------------------------------------------------
 397
 398 bool wxApp::UnregisterWindowClasses()
 399 {
 400     bool retval = TRUE;
 401
 402 #ifndef __WXMICROWIN__
 403     // MDI frame window class.
 404     if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) )
 405     {
 406         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 407
 408         retval = FALSE;
 409     }
 410
 411     // "no redraw" MDI frame
 412     if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
 413     {
 414         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 415
 416         retval = FALSE;
 417     }
 418
 419     // MDI child frame window class.
 420     if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
 421     {
 422         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 423
 424         retval = FALSE;
 425     }
 426
 427     // "no redraw" MDI child frame
 428     if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
 429     {
 430         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 431
 432         retval = FALSE;
 433     }
 434
 435     // canvas class name
 436     if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) )
 437     {
 438         wxLogLastError(wxT("UnregisterClass(canvas)"));
 439
 440         retval = FALSE;
 441     }
 442
 443     if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
 444     {
 445         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 446
 447         retval = FALSE;
 448     }
 449 #endif // __WXMICROWIN__
 450
 451     return retval;
 452 }
 453
 454 // ---------------------------------------------------------------------------
 455 // Convert Windows to argc, argv style
 456 // ---------------------------------------------------------------------------
 457
 458 void wxApp::ConvertToStandardCommandArgs(const char* lpCmdLine)
 459 {
 460     // break the command line in words
 461     wxArrayString args =
 462         wxCmdLineParser::ConvertStringToArgs(wxConvertMB2WX(lpCmdLine));
 463
 464     // +1 here for the program name
 465     argc = args.GetCount() + 1;
 466
 467     // and +1 here for the terminating NULL
 468     argv = new wxChar *[argc + 1];
 469
 470     argv[0] = new wxChar[260]; // 260 is MAX_PATH value from windef.h
 471     ::GetModuleFileName(wxhInstance, argv[0], 260);
 472
 473     // also set the app name from argv[0]
 474     wxString name;
 475     wxFileName::SplitPath(argv[0], NULL, &name, NULL);
 476
 477     SetAppName(name);
 478
 479     // copy all the other arguments to wxApp::argv[]
 480     for ( int i = 1; i < argc; i++ )
 481     {
 482         argv[i] = copystring(args[i - 1]);
 483     }
 484
 485     // argv[] must be NULL-terminated
 486     argv[argc] = NULL;
 487 }
 488
 489 //// Cleans up any wxWindows internal structures left lying around
 490
 491 void wxApp::CleanUp()
 492 {
 493     //// COMMON CLEANUP
 494
 495 #if wxUSE_LOG
 496     // flush the logged messages if any and install a 'safer' log target: the
 497     // default one (wxLogGui) can't be used after the resources are freed just
 498     // below and the user suppliedo ne might be even more unsafe (using any
 499     // wxWindows GUI function is unsafe starting from now)
 500     wxLog::DontCreateOnDemand();
 501
 502     // this will flush the old messages if any
 503     delete wxLog::SetActiveTarget(new wxLogStderr);
 504 #endif // wxUSE_LOG
 505
 506     // One last chance for pending objects to be cleaned up
 507     wxTheApp->DeletePendingObjects();
 508
 509     wxModule::CleanUpModules();
 510
 511 #if wxUSE_WX_RESOURCES
 512     wxCleanUpResourceSystem();
 513
 514     //  wxDefaultResourceTable->ClearTable();
 515 #endif
 516
 517     wxDeleteStockObjects();
 518
 519     // Destroy all GDI lists, etc.
 520     wxDeleteStockLists();
 521
 522     delete wxTheColourDatabase;
 523     wxTheColourDatabase = NULL;
 524
 525     wxBitmap::CleanUpHandlers();
 526
 527     delete[] wxBuffer;
 528     wxBuffer = NULL;
 529
 530     //// WINDOWS-SPECIFIC CLEANUP
 531
 532 #ifndef __WXMICROWIN__
 533     wxSetKeyboardHook(FALSE);
 534 #endif
 535
 536 #if wxUSE_PENWINDOWS
 537     wxCleanUpPenWin();
 538 #endif
 539
 540     if (wxSTD_FRAME_ICON)
 541         DestroyIcon(wxSTD_FRAME_ICON);
 542     if (wxSTD_MDICHILDFRAME_ICON)
 543         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 544     if (wxSTD_MDIPARENTFRAME_ICON)
 545         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 546
 547     if (wxDEFAULT_FRAME_ICON)
 548         DestroyIcon(wxDEFAULT_FRAME_ICON);
 549     if (wxDEFAULT_MDICHILDFRAME_ICON)
 550         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 551     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 552         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 553
 554     if ( wxDisableButtonBrush )
 555         ::DeleteObject( wxDisableButtonBrush );
 556
 557 #if wxUSE_OLE
 558     ::OleUninitialize();
 559 #endif
 560
 561 #ifdef WXMAKINGDLL
 562     // for an EXE the classes are unregistered when it terminates but DLL may
 563     // be loaded several times (load/unload/load) into the same process in
 564     // which case the registration will fail after the first time if we don't
 565     // unregister the classes now
 566     UnregisterWindowClasses();
 567 #endif // WXMAKINGDLL
 568
 569 #if wxUSE_CTL3D
 570     Ctl3dUnregister(wxhInstance);
 571 #endif
 572
 573     delete wxWinHandleHash;
 574
 575     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 576     // create a module for that as it's part of the core.
 577     delete wxPendingEvents;
 578
 579 #if wxUSE_THREADS
 580     delete wxPendingEventsLocker;
 581     // If we don't do the following, we get an apparent memory leak
 582 #if wxUSE_VALIDATORS
 583     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 584 #endif // wxUSE_VALIDATORS
 585 #endif // wxUSE_THREADS
 586
 587     wxClassInfo::CleanUpClasses();
 588
 589     delete wxTheApp;
 590     wxTheApp = NULL;
 591
 592 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 593     // At this point we want to check if there are any memory
 594     // blocks that aren't part of the wxDebugContext itself,
 595     // as a special case. Then when dumping we need to ignore
 596     // wxDebugContext, too.
 597     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 598     {
 599         wxLogMessage(wxT("There were memory leaks."));
 600         wxDebugContext::Dump();
 601         wxDebugContext::PrintStatistics();
 602     }
 603     //  wxDebugContext::SetStream(NULL, NULL);
 604 #endif
 605
 606 #if wxUSE_LOG
 607     // do it as the very last thing because everything else can log messages
 608     delete wxLog::SetActiveTarget(NULL);
 609 #endif // wxUSE_LOG
 610 }
 611
 612 //----------------------------------------------------------------------
 613 // Entry point helpers, used by wxPython
 614 //----------------------------------------------------------------------
 615
 616 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 617 {
 618     return wxApp::Initialize();
 619 }
 620
 621 int WXDLLEXPORT wxEntryInitGui()
 622 {
 623     return wxTheApp->OnInitGui();
 624 }
 625
 626 void WXDLLEXPORT wxEntryCleanup()
 627 {
 628     wxApp::CleanUp();
 629 }
 630
 631
 632 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 633
 634 // temporarily disable this warning which would be generated in release builds
 635 // because of __try
 636 #ifdef __VISUALC__
 637     #pragma warning(disable: 4715) // not all control paths return a value
 638 #endif // Visual C++
 639
 640 //----------------------------------------------------------------------
 641 // Main wxWindows entry point
 642 //----------------------------------------------------------------------
 643 int wxEntry(WXHINSTANCE hInstance,
 644             WXHINSTANCE WXUNUSED(hPrevInstance),
 645             char *lpCmdLine,
 646             int nCmdShow,
 647             bool enterLoop)
 648 {
 649     // do check for memory leaks on program exit
 650     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 651     //  deallocated memory which may be used to simulate low-memory condition)
 652 #ifndef __WXMICROWIN__
 653     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 654 #endif
 655
 656 #ifdef __MWERKS__
 657 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 658     // This seems to be necessary since there are 'rogue'
 659     // objects present at this point (perhaps global objects?)
 660     // Setting a checkpoint will ignore them as far as the
 661     // memory checking facility is concerned.
 662     // Of course you may argue that memory allocated in globals should be
 663     // checked, but this is a reasonable compromise.
 664     wxDebugContext::SetCheckpoint();
 665 #endif
 666 #endif
 667
 668     // take everything into a try-except block to be able to call
 669     // OnFatalException() if necessary
 670 #if wxUSE_ON_FATAL_EXCEPTION
 671     __try {
 672 #endif
 673         wxhInstance = (HINSTANCE) hInstance;
 674
 675         if (!wxEntryStart(0,0))
 676             return 0;
 677
 678         // create the application object or ensure that one already exists
 679         if (!wxTheApp)
 680         {
 681             // The app may have declared a global application object, but we recommend
 682             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 683             // function for delayed, dynamic app object construction.
 684             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 685                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 686
 687             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 688         }
 689
 690         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 691
 692         // save the WinMain() parameters
 693         if (lpCmdLine) // MicroWindows passes NULL
 694             wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 695         wxTheApp->m_nCmdShow = nCmdShow;
 696
 697         // We really don't want timestamps by default, because it means
 698         // we can't simply double-click on the error message and get to that
 699         // line in the source. So VC++ at least, let's have a sensible default.
 700 #ifdef __VISUALC__
 701         wxLog::SetTimestamp(NULL);
 702 #endif
 703
 704         // init the app
 705         int retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 706
 707         if ( retValue == 0 )
 708         {
 709             if ( enterLoop )
 710             {
 711                 // run the main loop
 712                 retValue = wxTheApp->OnRun();
 713             }
 714             else
 715             {
 716                 // we want to initialize, but not run or exit immediately.
 717                 return 1;
 718             }
 719         }
 720         //else: app initialization failed, so we skipped OnRun()
 721
 722         wxWindow *topWindow = wxTheApp->GetTopWindow();
 723         if ( topWindow )
 724         {
 725             // Forcibly delete the window.
 726             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 727                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 728             {
 729                 topWindow->Close(TRUE);
 730                 wxTheApp->DeletePendingObjects();
 731             }
 732             else
 733             {
 734                 delete topWindow;
 735                 wxTheApp->SetTopWindow(NULL);
 736             }
 737         }
 738
 739         wxTheApp->OnExit();
 740
 741         wxEntryCleanup();
 742
 743         return retValue;
 744
 745 #if wxUSE_ON_FATAL_EXCEPTION
 746     }
 747     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 748                                    : EXCEPTION_CONTINUE_SEARCH ) {
 749         if ( wxTheApp )
 750         {
 751            // give the user a chance to do something special about this
 752            wxTheApp->OnFatalException();
 753         }
 754
 755         ::ExitProcess(3); // the same exit code as abort()
 756
 757         // NOTREACHED
 758     }
 759 #endif // wxUSE_ON_FATAL_EXCEPTION
 760 }
 761
 762 // restore warning state
 763 #ifdef __VISUALC__
 764     #pragma warning(default: 4715) // not all control paths return a value
 765 #endif // Visual C++
 766
 767 #else /*  _WINDLL  */
 768
 769 //----------------------------------------------------------------------
 770 // Entry point for wxWindows + the App in a DLL
 771 //----------------------------------------------------------------------
 772
 773 int wxEntry(WXHINSTANCE hInstance)
 774 {
 775     wxhInstance = (HINSTANCE) hInstance;
 776     wxEntryStart(0, 0);
 777
 778     // The app may have declared a global application object, but we recommend
 779     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 780     // for delayed, dynamic app object construction.
 781     if (!wxTheApp)
 782     {
 783         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 784                      "No initializer - use IMPLEMENT_APP macro." );
 785
 786         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 787     }
 788
 789     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 790
 791     wxTheApp->argc = 0;
 792     wxTheApp->argv = NULL;
 793
 794     wxEntryInitGui();
 795
 796     wxTheApp->OnInit();
 797
 798     wxWindow *topWindow = wxTheApp->GetTopWindow();
 799     if ( topWindow && topWindow->GetHWND())
 800     {
 801         topWindow->Show(TRUE);
 802     }
 803
 804     return 1;
 805 }
 806 #endif // _WINDLL
 807
 808 //// Static member initialization
 809
 810 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 811
 812 wxApp::wxApp()
 813 {
 814     argc = 0;
 815     argv = NULL;
 816     m_printMode = wxPRINT_WINDOWS;
 817     m_auto3D = TRUE;
 818 }
 819
 820 wxApp::~wxApp()
 821 {
 822     // Delete command-line args
 823     int i;
 824     for (i = 0; i < argc; i++)
 825     {
 826         delete[] argv[i];
 827     }
 828     delete[] argv;
 829 }
 830
 831 bool wxApp::Initialized()
 832 {
 833 #ifndef _WINDLL
 834     if (GetTopWindow())
 835         return TRUE;
 836     else
 837         return FALSE;
 838 #else // Assume initialized if DLL (no way of telling)
 839     return TRUE;
 840 #endif
 841 }
 842
 843 /*
 844  * Get and process a message, returning FALSE if WM_QUIT
 845  * received (and also set the flag telling the app to exit the main loop)
 846  *
 847  */
 848 bool wxApp::DoMessage()
 849 {
 850     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 851     if ( rc == 0 )
 852     {
 853         // got WM_QUIT
 854         m_keepGoing = FALSE;
 855
 856         return FALSE;
 857     }
 858     else if ( rc == -1 )
 859     {
 860         // should never happen, but let's test for it nevertheless
 861         wxLogLastError(wxT("GetMessage"));
 862     }
 863     else
 864     {
 865 #if wxUSE_THREADS
 866         wxASSERT_MSG( wxThread::IsMain(),
 867                       wxT("only the main thread can process Windows messages") );
 868
 869         static bool s_hadGuiLock = TRUE;
 870         static wxMsgArray s_aSavedMessages;
 871
 872         // if a secondary thread owns is doing GUI calls, save all messages for
 873         // later processing - we can't process them right now because it will
 874         // lead to recursive library calls (and we're not reentrant)
 875         if ( !wxGuiOwnedByMainThread() )
 876         {
 877             s_hadGuiLock = FALSE;
 878
 879             // leave out WM_COMMAND messages: too dangerous, sometimes
 880             // the message will be processed twice
 881             if ( !wxIsWaitingForThread() ||
 882                     s_currentMsg.message != WM_COMMAND )
 883             {
 884                 s_aSavedMessages.Add(s_currentMsg);
 885             }
 886
 887             return TRUE;
 888         }
 889         else
 890         {
 891             // have we just regained the GUI lock? if so, post all of the saved
 892             // messages
 893             //
 894             // FIXME of course, it's not _exactly_ the same as processing the
 895             //       messages normally - expect some things to break...
 896             if ( !s_hadGuiLock )
 897             {
 898                 s_hadGuiLock = TRUE;
 899
 900                 size_t count = s_aSavedMessages.GetCount();
 901                 for ( size_t n = 0; n < count; n++ )
 902                 {
 903                     MSG& msg = s_aSavedMessages[n];
 904
 905                     DoMessage((WXMSG *)&msg);
 906                 }
 907
 908                 s_aSavedMessages.Empty();
 909             }
 910         }
 911 #endif // wxUSE_THREADS
 912
 913         // Process the message
 914         DoMessage((WXMSG *)&s_currentMsg);
 915     }
 916
 917     return TRUE;
 918 }
 919
 920 void wxApp::DoMessage(WXMSG *pMsg)
 921 {
 922     if ( !ProcessMessage(pMsg) )
 923     {
 924         ::TranslateMessage((MSG *)pMsg);
 925         ::DispatchMessage((MSG *)pMsg);
 926     }
 927 }
 928
 929 /*
 930  * Keep trying to process messages until WM_QUIT
 931  * received.
 932  *
 933  * If there are messages to be processed, they will all be
 934  * processed and OnIdle will not be called.
 935  * When there are no more messages, OnIdle is called.
 936  * If OnIdle requests more time,
 937  * it will be repeatedly called so long as there are no pending messages.
 938  * A 'feature' of this is that once OnIdle has decided that no more processing
 939  * is required, then it won't get processing time until further messages
 940  * are processed (it'll sit in DoMessage).
 941  */
 942
 943 int wxApp::MainLoop()
 944 {
 945     m_keepGoing = TRUE;
 946
 947     while ( m_keepGoing )
 948     {
 949 #if wxUSE_THREADS
 950         wxMutexGuiLeaveOrEnter();
 951 #endif // wxUSE_THREADS
 952
 953         while ( !Pending() && ProcessIdle() )
 954             ;
 955
 956         // a message came or no more idle processing to do
 957         DoMessage();
 958     }
 959
 960     return s_currentMsg.wParam;
 961 }
 962
 963 // Returns TRUE if more time is needed.
 964 bool wxApp::ProcessIdle()
 965 {
 966     wxIdleEvent event;
 967     event.SetEventObject(this);
 968     ProcessEvent(event);
 969
 970     return event.MoreRequested();
 971 }
 972
 973 void wxApp::ExitMainLoop()
 974 {
 975     // this will set m_keepGoing to FALSE a bit later
 976     ::PostQuitMessage(0);
 977 }
 978
 979 bool wxApp::Pending()
 980 {
 981     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
 982 }
 983
 984 void wxApp::Dispatch()
 985 {
 986     DoMessage();
 987 }
 988
 989 /*
 990  * Give all windows a chance to preprocess
 991  * the message. Some may have accelerator tables, or have
 992  * MDI complications.
 993  */
 994
 995 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 996 {
 997     MSG *msg = (MSG *)wxmsg;
 998     HWND hwnd = msg->hwnd;
 999     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
1000
1001     // this may happen if the event occured in a standard modeless dialog (the
1002     // only example of which I know of is the find/replace dialog) - then call
1003     // IsDialogMessage() to make TAB navigation in it work
1004     if ( !wndThis )
1005     {
1006         // we need to find the dialog containing this control as
1007         // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
1008         // them) if we call it for the control itself
1009         while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
1010         {
1011             hwnd = ::GetParent(hwnd);
1012         }
1013
1014         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
1015     }
1016
1017 #if wxUSE_TOOLTIPS
1018     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1019     // popup the tooltip bubbles
1020     if ( (msg->message == WM_MOUSEMOVE) )
1021     {
1022         wxToolTip *tt = wndThis->GetToolTip();
1023         if ( tt )
1024         {
1025             tt->RelayEvent(wxmsg);
1026         }
1027     }
1028 #endif // wxUSE_TOOLTIPS
1029
1030     // allow the window to prevent certain messages from being
1031     // translated/processed (this is currently used by wxTextCtrl to always
1032     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
1033     if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
1034     {
1035         return FALSE;
1036     }
1037
1038     // try translations first: the accelerators override everything
1039     wxWindow *wnd;
1040
1041     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1042     {
1043         if ( wnd->MSWTranslateMessage(wxmsg))
1044             return TRUE;
1045
1046         // stop at first top level window, i.e. don't try to process the key
1047         // strokes originating in a dialog using the accelerators of the parent
1048         // frame - this doesn't make much sense
1049         if ( wnd->IsTopLevel() )
1050             break;
1051     }
1052
1053     // now try the other hooks (kbd navigation is handled here): we start from
1054     // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
1055     // called above
1056     for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
1057     {
1058         if ( wnd->MSWProcessMessage(wxmsg) )
1059             return TRUE;
1060     }
1061
1062     // no special preprocessing for this message, dispatch it normally
1063     return FALSE;
1064 }
1065
1066 void wxApp::OnIdle(wxIdleEvent& event)
1067 {
1068     static bool s_inOnIdle = FALSE;
1069
1070     // Avoid recursion (via ProcessEvent default case)
1071     if ( s_inOnIdle )
1072         return;
1073
1074     s_inOnIdle = TRUE;
1075
1076     // If there are pending events, we must process them: pending events
1077     // are either events to the threads other than main or events posted
1078     // with wxPostEvent() functions
1079     // GRG: I have moved this here so that all pending events are processed
1080     //   before starting to delete any objects. This behaves better (in
1081     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1082     //   behaviour. Changed Feb/2000 before 2.1.14
1083     ProcessPendingEvents();
1084
1085     // 'Garbage' collection of windows deleted with Close().
1086     DeletePendingObjects();
1087
1088 #if wxUSE_LOG
1089     // flush the logged messages if any
1090     wxLog::FlushActive();
1091 #endif // wxUSE_LOG
1092
1093 #if wxUSE_DC_CACHEING
1094     // automated DC cache management: clear the cached DCs and bitmap
1095     // if it's likely that the app has finished with them, that is, we
1096     // get an idle event and we're not dragging anything.
1097     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
1098         wxDC::ClearCache();
1099 #endif // wxUSE_DC_CACHEING
1100
1101     // Send OnIdle events to all windows
1102     if ( SendIdleEvents() )
1103     {
1104         // SendIdleEvents() returns TRUE if at least one window requested more
1105         // idle events
1106         event.RequestMore(TRUE);
1107     }
1108
1109     s_inOnIdle = FALSE;
1110 }
1111
1112 // Send idle event to all top-level windows
1113 bool wxApp::SendIdleEvents()
1114 {
1115     bool needMore = FALSE;
1116
1117     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1118     while (node)
1119     {
1120         wxWindow* win = node->GetData();
1121         if (SendIdleEvents(win))
1122             needMore = TRUE;
1123         node = node->GetNext();
1124     }
1125
1126     return needMore;
1127 }
1128
1129 // Send idle event to window and all subwindows
1130 bool wxApp::SendIdleEvents(wxWindow* win)
1131 {
1132     bool needMore = FALSE;
1133
1134     wxIdleEvent event;
1135     event.SetEventObject(win);
1136     win->GetEventHandler()->ProcessEvent(event);
1137
1138     if (event.MoreRequested())
1139         needMore = TRUE;
1140
1141     wxNode* node = win->GetChildren().First();
1142     while (node)
1143     {
1144         wxWindow* win = (wxWindow*) node->Data();
1145         if (SendIdleEvents(win))
1146             needMore = TRUE;
1147
1148         node = node->Next();
1149     }
1150     return needMore;
1151 }
1152
1153 void wxApp::DeletePendingObjects()
1154 {
1155     wxNode *node = wxPendingDelete.First();
1156     while (node)
1157     {
1158         wxObject *obj = (wxObject *)node->Data();
1159
1160         delete obj;
1161
1162         if (wxPendingDelete.Member(obj))
1163             delete node;
1164
1165         // Deleting one object may have deleted other pending
1166         // objects, so start from beginning of list again.
1167         node = wxPendingDelete.First();
1168     }
1169 }
1170
1171 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1172 {
1173     if (GetTopWindow())
1174         GetTopWindow()->Close(TRUE);
1175 }
1176
1177 // Default behaviour: close the application with prompts. The
1178 // user can veto the close, and therefore the end session.
1179 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1180 {
1181     if (GetTopWindow())
1182     {
1183         if (!GetTopWindow()->Close(!event.CanVeto()))
1184             event.Veto(TRUE);
1185     }
1186 }
1187
1188 /* static */
1189 int wxApp::GetComCtl32Version()
1190 {
1191 #ifdef __WXMICROWIN__
1192     return 0;
1193 #else
1194     // cache the result
1195     static int s_verComCtl32 = -1;
1196
1197     wxCRIT_SECT_DECLARE(csComCtl32);
1198     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1199
1200     if ( s_verComCtl32 == -1 )
1201     {
1202         // initally assume no comctl32.dll at all
1203         s_verComCtl32 = 0;
1204
1205         // do we have it?
1206         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1207
1208         // if so, then we can check for the version
1209         if ( hModuleComCtl32 )
1210         {
1211             // try to use DllGetVersion() if available in _headers_
1212             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1213                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1214                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1215                 if ( pfnDllGetVersion )
1216                 {
1217                     DLLVERSIONINFO dvi;
1218                     dvi.cbSize = sizeof(dvi);
1219
1220                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1221                     if ( FAILED(hr) )
1222                     {
1223                         wxLogApiError(_T("DllGetVersion"), hr);
1224                     }
1225                     else
1226                     {
1227                         // this is incompatible with _WIN32_IE values, but
1228                         // compatible with the other values returned by
1229                         // GetComCtl32Version()
1230                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1231                                             dvi.dwMinorVersion;
1232                     }
1233                 }
1234             #endif
1235                 // DllGetVersion() unavailable either during compile or
1236                 // run-time, try to guess the version otherwise
1237                 if ( !s_verComCtl32 )
1238                 {
1239                     // InitCommonControlsEx is unique to 4.70 and later
1240                     FARPROC theProc = ::GetProcAddress
1241                                         (
1242                                          hModuleComCtl32,
1243                                          "InitCommonControlsEx"
1244                                         );
1245
1246                     if ( !theProc )
1247                     {
1248                         // not found, must be 4.00
1249                         s_verComCtl32 = 400;
1250                     }
1251                     else
1252                     {
1253                         // many symbols appeared in comctl32 4.71, could use
1254                         // any of them except may be DllInstall
1255                         theProc = ::GetProcAddress
1256                                     (
1257                                      hModuleComCtl32,
1258                                      "InitializeFlatSB"
1259                                     );
1260                         if ( !theProc )
1261                         {
1262                             // not found, must be 4.70
1263                             s_verComCtl32 = 470;
1264                         }
1265                         else
1266                         {
1267                             // found, must be 4.71
1268                             s_verComCtl32 = 471;
1269                         }
1270                     }
1271                 }
1272         }
1273     }
1274
1275     return s_verComCtl32;
1276 #endif
1277 }
1278
1279 void wxExit()
1280 {
1281     wxLogError(_("Fatal error: exiting"));
1282
1283     wxApp::CleanUp();
1284     exit(0);
1285 }
1286
1287 // Yield to incoming messages
1288
1289 bool wxApp::Yield(bool onlyIfNeeded)
1290 {
1291     // MT-FIXME
1292     static bool s_inYield = FALSE;
1293
1294     // disable log flushing from here because a call to wxYield() shouldn't
1295     // normally result in message boxes popping up &c
1296     wxLog::Suspend();
1297
1298     if ( s_inYield )
1299     {
1300         if ( !onlyIfNeeded )
1301         {
1302             wxFAIL_MSG( wxT("wxYield called recursively" ) );
1303         }
1304
1305         return FALSE;
1306     }
1307
1308     s_inYield = TRUE;
1309
1310     // we don't want to process WM_QUIT from here - it should be processed in
1311     // the main event loop in order to stop it
1312     MSG msg;
1313     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1314             msg.message != WM_QUIT )
1315     {
1316 #if wxUSE_THREADS
1317         wxMutexGuiLeaveOrEnter();
1318 #endif // wxUSE_THREADS
1319
1320         if ( !wxTheApp->DoMessage() )
1321             break;
1322     }
1323
1324     // if there are pending events, we must process them.
1325     ProcessPendingEvents();
1326
1327     // let the logs be flashed again
1328     wxLog::Resume();
1329
1330     s_inYield = FALSE;
1331
1332     return TRUE;
1333 }
1334
1335 bool wxHandleFatalExceptions(bool doit)
1336 {
1337 #if wxUSE_ON_FATAL_EXCEPTION
1338     // assume this can only be called from the main thread
1339     gs_handleExceptions = doit;
1340
1341     return TRUE;
1342 #else
1343     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to use this function"));
1344
1345     (void)doit;
1346     return FALSE;
1347 #endif
1348 }
1349
1350 //-----------------------------------------------------------------------------
1351 // wxWakeUpIdle
1352 //-----------------------------------------------------------------------------
1353
1354 void wxWakeUpIdle()
1355 {
1356     // Send the top window a dummy message so idle handler processing will
1357     // start up again.  Doing it this way ensures that the idle handler
1358     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1359     // the same for the main app thread only)
1360     wxWindow *topWindow = wxTheApp->GetTopWindow();
1361     if ( topWindow )
1362     {
1363         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1364         {
1365             // should never happen
1366             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1367         }
1368     }
1369 }
1370
1371 //-----------------------------------------------------------------------------
1372
1373 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1374 // if in a separate file. So include it here to ensure it's linked.
1375 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1376 #include "main.cpp"
1377 #endif