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 && !defined(__MINGW32__)
 121     #include <shlwapi.h>
 122 #endif
 123
 124 // ---------------------------------------------------------------------------
 125 // global variables
 126 // ---------------------------------------------------------------------------
 127
 128 extern wxChar *wxBuffer;
 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 *wxCanvasClassName        = wxT("wxWindowClass");
 140 const wxChar *wxCanvasClassNameNR      = wxT("wxWindowClassNR");
 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
 146 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 147 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 148 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 149
 150 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 151 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 152 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 153
 154 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 155
 156 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 157
 158 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
 159 //       needs compiler support for Win32 SEH. Others (especially Borland)
 160 //       probably have it too, but I'm not sure about how it works
 161 // JACS: get 'Cannot use __try in functions that require unwinding
 162 // in Unicode mode, so disabling.
 163 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
 164     #undef wxUSE_ON_FATAL_EXCEPTION
 165     #define wxUSE_ON_FATAL_EXCEPTION 0
 166 #endif // VC++
 167
 168 #if wxUSE_ON_FATAL_EXCEPTION
 169     static bool gs_handleExceptions = FALSE;
 170 #endif
 171
 172 // ===========================================================================
 173 // implementation
 174 // ===========================================================================
 175
 176 // ---------------------------------------------------------------------------
 177 // wxApp
 178 // ---------------------------------------------------------------------------
 179
 180 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 181
 182 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 183     EVT_IDLE(wxApp::OnIdle)
 184     EVT_END_SESSION(wxApp::OnEndSession)
 185     EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 186 END_EVENT_TABLE()
 187
 188 //// Initialize
 189 bool wxApp::Initialize()
 190 {
 191     // the first thing to do is to check if we're trying to run an Unicode
 192     // program under Win9x w/o MSLU emulation layer - if so, abort right now
 193     // as it has no chance to work
 194 #if wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 195     if ( wxGetOsVersion() != wxWINDOWS_NT )
 196     {
 197         // note that we can use MessageBoxW() as it's implemented even under
 198         // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
 199         // used by wxLocale are not
 200         ::MessageBox
 201         (
 202          NULL,
 203          _T("This program uses Unicode and requires Windows NT/2000/XP.\nProgram aborted."),
 204          _T("wxWindows Fatal Error"),
 205          MB_ICONERROR | MB_OK
 206         );
 207
 208         return FALSE;
 209     }
 210 #endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 211
 212     wxBuffer = new wxChar[1500]; // FIXME
 213
 214     wxClassInfo::InitializeClasses();
 215
 216 #if wxUSE_THREADS
 217     wxPendingEventsLocker = new wxCriticalSection;
 218 #endif
 219
 220     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 221     wxTheColourDatabase->Initialize();
 222
 223     wxInitializeStockLists();
 224     wxInitializeStockObjects();
 225
 226 #if wxUSE_WX_RESOURCES
 227     wxInitializeResourceSystem();
 228 #endif
 229
 230     wxBitmap::InitStandardHandlers();
 231
 232 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 233     InitCommonControls();
 234 #endif // __WIN95__
 235
 236 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 237
 238 #ifdef __WIN16__
 239     // for OLE, enlarge message queue to be as large as possible
 240     int iMsg = 96;
 241     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 242         ;
 243 #endif // Win16
 244
 245 #if wxUSE_OLE
 246     // we need to initialize OLE library
 247     if ( FAILED(::OleInitialize(NULL)) )
 248         wxLogError(_("Cannot initialize OLE"));
 249 #endif
 250
 251 #endif // wxUSE_OLE
 252
 253 #if wxUSE_CTL3D
 254     if (!Ctl3dRegister(wxhInstance))
 255         wxLogError(wxT("Cannot register CTL3D"));
 256
 257     Ctl3dAutoSubclass(wxhInstance);
 258 #endif // wxUSE_CTL3D
 259
 260     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 261 #if 0
 262     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 263     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 264     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 265
 266     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 267     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 268     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 269 #endif // 0
 270
 271     RegisterWindowClasses();
 272
 273 #ifndef __WXMICROWIN__
 274     // Create the brush for disabling bitmap buttons
 275
 276     LOGBRUSH lb;
 277     lb.lbStyle = BS_PATTERN;
 278     lb.lbColor = 0;
 279     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 280     if ( lb.lbHatch )
 281     {
 282         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 283         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 284     }
 285     //else: wxWindows resources are probably not linked in
 286 #endif
 287
 288 #if wxUSE_PENWINDOWS
 289     wxRegisterPenWin();
 290 #endif
 291
 292     wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
 293
 294     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 295     // PLEASE DO NOT ALTER THIS.
 296 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 297     extern char wxDummyChar;
 298     if (wxDummyChar) wxDummyChar++;
 299 #endif
 300
 301 #ifndef __WXMICROWIN__
 302     wxSetKeyboardHook(TRUE);
 303 #endif
 304
 305     wxModule::RegisterModules();
 306     if (!wxModule::InitializeModules())
 307         return FALSE;
 308     return TRUE;
 309 }
 310
 311 // ---------------------------------------------------------------------------
 312 // RegisterWindowClasses
 313 // ---------------------------------------------------------------------------
 314
 315 // TODO we should only register classes really used by the app. For this it
 316 //      would be enough to just delay the class registration until an attempt
 317 //      to create a window of this class is made.
 318 bool wxApp::RegisterWindowClasses()
 319 {
 320     WNDCLASS wndclass;
 321     wxZeroMemory(wndclass);
 322
 323     // for each class we register one with CS_(V|H)REDRAW style and one
 324     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 325     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 326     static const long styleNoRedraw = CS_DBLCLKS;
 327
 328     // the fields which are common to all classes
 329     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 330     wndclass.hInstance     = wxhInstance;
 331     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 332
 333     // Register the frame window class.
 334     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 335     wndclass.lpszClassName = wxCanvasClassName;
 336     wndclass.style         = styleNormal;
 337
 338     if ( !RegisterClass(&wndclass) )
 339     {
 340         wxLogLastError(wxT("RegisterClass(frame)"));
 341
 342         return FALSE;
 343     }
 344
 345     // "no redraw" frame
 346     wndclass.lpszClassName = wxCanvasClassNameNR;
 347     wndclass.style         = styleNoRedraw;
 348
 349     if ( !RegisterClass(&wndclass) )
 350     {
 351         wxLogLastError(wxT("RegisterClass(no redraw frame)"));
 352
 353         return FALSE;
 354     }
 355
 356     // Register the MDI frame window class.
 357     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 358     wndclass.lpszClassName = wxMDIFrameClassName;
 359     wndclass.style         = styleNormal;
 360
 361     if ( !RegisterClass(&wndclass) )
 362     {
 363         wxLogLastError(wxT("RegisterClass(MDI parent)"));
 364
 365         return FALSE;
 366     }
 367
 368     // "no redraw" MDI frame
 369     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 370     wndclass.style         = styleNoRedraw;
 371
 372     if ( !RegisterClass(&wndclass) )
 373     {
 374         wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
 375
 376         return FALSE;
 377     }
 378
 379     // Register the MDI child frame window class.
 380     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 381     wndclass.lpszClassName = wxMDIChildFrameClassName;
 382     wndclass.style         = styleNormal;
 383
 384     if ( !RegisterClass(&wndclass) )
 385     {
 386         wxLogLastError(wxT("RegisterClass(MDI child)"));
 387
 388         return FALSE;
 389     }
 390
 391     // "no redraw" MDI child frame
 392     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 393     wndclass.style         = styleNoRedraw;
 394
 395     if ( !RegisterClass(&wndclass) )
 396     {
 397         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
 398
 399         return FALSE;
 400     }
 401
 402     return TRUE;
 403 }
 404
 405 // ---------------------------------------------------------------------------
 406 // UnregisterWindowClasses
 407 // ---------------------------------------------------------------------------
 408
 409 bool wxApp::UnregisterWindowClasses()
 410 {
 411     bool retval = TRUE;
 412
 413 #ifndef __WXMICROWIN__
 414     // MDI frame window class.
 415     if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) )
 416     {
 417         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 418
 419         retval = FALSE;
 420     }
 421
 422     // "no redraw" MDI frame
 423     if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
 424     {
 425         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 426
 427         retval = FALSE;
 428     }
 429
 430     // MDI child frame window class.
 431     if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
 432     {
 433         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 434
 435         retval = FALSE;
 436     }
 437
 438     // "no redraw" MDI child frame
 439     if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
 440     {
 441         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 442
 443         retval = FALSE;
 444     }
 445
 446     // canvas class name
 447     if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) )
 448     {
 449         wxLogLastError(wxT("UnregisterClass(canvas)"));
 450
 451         retval = FALSE;
 452     }
 453
 454     if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
 455     {
 456         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 457
 458         retval = FALSE;
 459     }
 460 #endif // __WXMICROWIN__
 461
 462     return retval;
 463 }
 464
 465 // ---------------------------------------------------------------------------
 466 // Convert Windows to argc, argv style
 467 // ---------------------------------------------------------------------------
 468
 469 void wxApp::ConvertToStandardCommandArgs(const char* lpCmdLine)
 470 {
 471     // break the command line in words
 472     wxArrayString args =
 473         wxCmdLineParser::ConvertStringToArgs(wxConvertMB2WX(lpCmdLine));
 474
 475     // +1 here for the program name
 476     argc = args.GetCount() + 1;
 477
 478     // and +1 here for the terminating NULL
 479     argv = new wxChar *[argc + 1];
 480
 481     argv[0] = new wxChar[260]; // 260 is MAX_PATH value from windef.h
 482     ::GetModuleFileName(wxhInstance, argv[0], 260);
 483
 484     // also set the app name from argv[0]
 485     wxString name;
 486     wxFileName::SplitPath(argv[0], NULL, &name, NULL);
 487
 488     SetAppName(name);
 489
 490     // copy all the other arguments to wxApp::argv[]
 491     for ( int i = 1; i < argc; i++ )
 492     {
 493         argv[i] = copystring(args[i - 1]);
 494     }
 495
 496     // argv[] must be NULL-terminated
 497     argv[argc] = NULL;
 498 }
 499
 500 //// Cleans up any wxWindows internal structures left lying around
 501
 502 void wxApp::CleanUp()
 503 {
 504     //// COMMON CLEANUP
 505
 506 #if wxUSE_LOG
 507     // flush the logged messages if any and install a 'safer' log target: the
 508     // default one (wxLogGui) can't be used after the resources are freed just
 509     // below and the user suppliedo ne might be even more unsafe (using any
 510     // wxWindows GUI function is unsafe starting from now)
 511     wxLog::DontCreateOnDemand();
 512
 513     // this will flush the old messages if any
 514     delete wxLog::SetActiveTarget(new wxLogStderr);
 515 #endif // wxUSE_LOG
 516
 517     // One last chance for pending objects to be cleaned up
 518     wxTheApp->DeletePendingObjects();
 519
 520     wxModule::CleanUpModules();
 521
 522 #if wxUSE_WX_RESOURCES
 523     wxCleanUpResourceSystem();
 524
 525     //  wxDefaultResourceTable->ClearTable();
 526 #endif
 527
 528     wxDeleteStockObjects();
 529
 530     // Destroy all GDI lists, etc.
 531     wxDeleteStockLists();
 532
 533     delete wxTheColourDatabase;
 534     wxTheColourDatabase = NULL;
 535
 536     wxBitmap::CleanUpHandlers();
 537
 538     delete[] wxBuffer;
 539     wxBuffer = NULL;
 540
 541     //// WINDOWS-SPECIFIC CLEANUP
 542
 543 #ifndef __WXMICROWIN__
 544     wxSetKeyboardHook(FALSE);
 545 #endif
 546
 547 #if wxUSE_PENWINDOWS
 548     wxCleanUpPenWin();
 549 #endif
 550
 551     if (wxSTD_FRAME_ICON)
 552         DestroyIcon(wxSTD_FRAME_ICON);
 553     if (wxSTD_MDICHILDFRAME_ICON)
 554         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 555     if (wxSTD_MDIPARENTFRAME_ICON)
 556         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 557
 558     if (wxDEFAULT_FRAME_ICON)
 559         DestroyIcon(wxDEFAULT_FRAME_ICON);
 560     if (wxDEFAULT_MDICHILDFRAME_ICON)
 561         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 562     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 563         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 564
 565     if ( wxDisableButtonBrush )
 566         ::DeleteObject( wxDisableButtonBrush );
 567
 568 #if wxUSE_OLE
 569     ::OleUninitialize();
 570 #endif
 571
 572 #ifdef WXMAKINGDLL
 573     // for an EXE the classes are unregistered when it terminates but DLL may
 574     // be loaded several times (load/unload/load) into the same process in
 575     // which case the registration will fail after the first time if we don't
 576     // unregister the classes now
 577     UnregisterWindowClasses();
 578 #endif // WXMAKINGDLL
 579
 580 #if wxUSE_CTL3D
 581     Ctl3dUnregister(wxhInstance);
 582 #endif
 583
 584     delete wxWinHandleHash;
 585
 586     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 587     // create a module for that as it's part of the core.
 588     delete wxPendingEvents;
 589
 590 #if wxUSE_THREADS
 591     delete wxPendingEventsLocker;
 592     // If we don't do the following, we get an apparent memory leak
 593 #if wxUSE_VALIDATORS
 594     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 595 #endif // wxUSE_VALIDATORS
 596 #endif // wxUSE_THREADS
 597
 598     wxClassInfo::CleanUpClasses();
 599
 600     delete wxTheApp;
 601     wxTheApp = NULL;
 602
 603 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 604     // At this point we want to check if there are any memory
 605     // blocks that aren't part of the wxDebugContext itself,
 606     // as a special case. Then when dumping we need to ignore
 607     // wxDebugContext, too.
 608     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 609     {
 610         wxLogMessage(wxT("There were memory leaks."));
 611         wxDebugContext::Dump();
 612         wxDebugContext::PrintStatistics();
 613     }
 614     //  wxDebugContext::SetStream(NULL, NULL);
 615 #endif
 616
 617 #if wxUSE_LOG
 618     // do it as the very last thing because everything else can log messages
 619     delete wxLog::SetActiveTarget(NULL);
 620 #endif // wxUSE_LOG
 621 }
 622
 623 //----------------------------------------------------------------------
 624 // Entry point helpers, used by wxPython
 625 //----------------------------------------------------------------------
 626
 627 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 628 {
 629     return wxApp::Initialize();
 630 }
 631
 632 int WXDLLEXPORT wxEntryInitGui()
 633 {
 634     return wxTheApp->OnInitGui();
 635 }
 636
 637 void WXDLLEXPORT wxEntryCleanup()
 638 {
 639     wxApp::CleanUp();
 640 }
 641
 642
 643 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 644
 645 // temporarily disable this warning which would be generated in release builds
 646 // because of __try
 647 #ifdef __VISUALC__
 648     #pragma warning(disable: 4715) // not all control paths return a value
 649 #endif // Visual C++
 650
 651 //----------------------------------------------------------------------
 652 // Main wxWindows entry point
 653 //----------------------------------------------------------------------
 654 int wxEntry(WXHINSTANCE hInstance,
 655             WXHINSTANCE WXUNUSED(hPrevInstance),
 656             char *lpCmdLine,
 657             int nCmdShow,
 658             bool enterLoop)
 659 {
 660     // do check for memory leaks on program exit
 661     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 662     //  deallocated memory which may be used to simulate low-memory condition)
 663 #ifndef __WXMICROWIN__
 664     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 665 #endif
 666
 667 #ifdef __MWERKS__
 668 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 669     // This seems to be necessary since there are 'rogue'
 670     // objects present at this point (perhaps global objects?)
 671     // Setting a checkpoint will ignore them as far as the
 672     // memory checking facility is concerned.
 673     // Of course you may argue that memory allocated in globals should be
 674     // checked, but this is a reasonable compromise.
 675     wxDebugContext::SetCheckpoint();
 676 #endif
 677 #endif
 678
 679     // take everything into a try-except block to be able to call
 680     // OnFatalException() if necessary
 681 #if wxUSE_ON_FATAL_EXCEPTION
 682     __try {
 683 #endif
 684         wxhInstance = (HINSTANCE) hInstance;
 685
 686         if (!wxEntryStart(0,0))
 687             return 0;
 688
 689         // create the application object or ensure that one already exists
 690         if (!wxTheApp)
 691         {
 692             // The app may have declared a global application object, but we recommend
 693             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 694             // function for delayed, dynamic app object construction.
 695             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 696                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 697
 698             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 699         }
 700
 701         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 702
 703         // save the WinMain() parameters
 704         if (lpCmdLine) // MicroWindows passes NULL
 705             wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 706         wxTheApp->m_nCmdShow = nCmdShow;
 707
 708         // We really don't want timestamps by default, because it means
 709         // we can't simply double-click on the error message and get to that
 710         // line in the source. So VC++ at least, let's have a sensible default.
 711 #ifdef __VISUALC__
 712         wxLog::SetTimestamp(NULL);
 713 #endif
 714
 715         int retValue = 0;
 716
 717         // it is common to create a modal dialog in OnInit() (to ask/notify the
 718         // user about something) but it wouldn't work if we don't change the
 719         // "exit on delete last frame" flag here as when this dialog is
 720         // deleted, the app would terminate (it was the last top level window
 721         // as the main frame wasn't created yet!), so disable this behaviour
 722         // temproarily
 723         bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
 724         wxTheApp->SetExitOnFrameDelete(FALSE);
 725
 726         // init the app
 727         retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 728
 729         // restore the old flag value
 730         wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
 731
 732         if ( retValue == 0 )
 733         {
 734             if ( enterLoop )
 735             {
 736                 // run the main loop
 737                 retValue = wxTheApp->OnRun();
 738             }
 739             else
 740             {
 741                 // we want to initialize, but not run or exit immediately.
 742                 return 1;
 743             }
 744         }
 745         //else: app initialization failed, so we skipped OnRun()
 746
 747         wxWindow *topWindow = wxTheApp->GetTopWindow();
 748         if ( topWindow )
 749         {
 750             // Forcibly delete the window.
 751             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 752                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 753             {
 754                 topWindow->Close(TRUE);
 755                 wxTheApp->DeletePendingObjects();
 756             }
 757             else
 758             {
 759                 delete topWindow;
 760                 wxTheApp->SetTopWindow(NULL);
 761             }
 762         }
 763
 764         wxTheApp->OnExit();
 765
 766         wxEntryCleanup();
 767
 768         return retValue;
 769
 770 #if wxUSE_ON_FATAL_EXCEPTION
 771     }
 772     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 773                                    : EXCEPTION_CONTINUE_SEARCH ) {
 774         if ( wxTheApp )
 775         {
 776            // give the user a chance to do something special about this
 777            wxTheApp->OnFatalException();
 778         }
 779
 780         ::ExitProcess(3); // the same exit code as abort()
 781
 782         // NOTREACHED
 783     }
 784 #endif // wxUSE_ON_FATAL_EXCEPTION
 785 }
 786
 787 // restore warning state
 788 #ifdef __VISUALC__
 789     #pragma warning(default: 4715) // not all control paths return a value
 790 #endif // Visual C++
 791
 792 #else /*  _WINDLL  */
 793
 794 //----------------------------------------------------------------------
 795 // Entry point for wxWindows + the App in a DLL
 796 //----------------------------------------------------------------------
 797
 798 int wxEntry(WXHINSTANCE hInstance)
 799 {
 800     wxhInstance = (HINSTANCE) hInstance;
 801     wxEntryStart(0, 0);
 802
 803     // The app may have declared a global application object, but we recommend
 804     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 805     // for delayed, dynamic app object construction.
 806     if (!wxTheApp)
 807     {
 808         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 809                      "No initializer - use IMPLEMENT_APP macro." );
 810
 811         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 812     }
 813
 814     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 815
 816     wxTheApp->argc = 0;
 817     wxTheApp->argv = NULL;
 818
 819     wxEntryInitGui();
 820
 821     wxTheApp->OnInit();
 822
 823     wxWindow *topWindow = wxTheApp->GetTopWindow();
 824     if ( topWindow && topWindow->GetHWND())
 825     {
 826         topWindow->Show(TRUE);
 827     }
 828
 829     return 1;
 830 }
 831 #endif // _WINDLL
 832
 833 //// Static member initialization
 834
 835 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 836
 837 wxApp::wxApp()
 838 {
 839     argc = 0;
 840     argv = NULL;
 841     m_printMode = wxPRINT_WINDOWS;
 842     m_auto3D = TRUE;
 843 }
 844
 845 wxApp::~wxApp()
 846 {
 847     // Delete command-line args
 848     int i;
 849     for (i = 0; i < argc; i++)
 850     {
 851         delete[] argv[i];
 852     }
 853     delete[] argv;
 854 }
 855
 856 bool wxApp::Initialized()
 857 {
 858 #ifndef _WINDLL
 859     if (GetTopWindow())
 860         return TRUE;
 861     else
 862         return FALSE;
 863 #else // Assume initialized if DLL (no way of telling)
 864     return TRUE;
 865 #endif
 866 }
 867
 868 /*
 869  * Get and process a message, returning FALSE if WM_QUIT
 870  * received (and also set the flag telling the app to exit the main loop)
 871  *
 872  */
 873 bool wxApp::DoMessage()
 874 {
 875     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 876     if ( rc == 0 )
 877     {
 878         // got WM_QUIT
 879         m_keepGoing = FALSE;
 880
 881         return FALSE;
 882     }
 883     else if ( rc == -1 )
 884     {
 885         // should never happen, but let's test for it nevertheless
 886         wxLogLastError(wxT("GetMessage"));
 887     }
 888     else
 889     {
 890 #if wxUSE_THREADS
 891         wxASSERT_MSG( wxThread::IsMain(),
 892                       wxT("only the main thread can process Windows messages") );
 893
 894         static bool s_hadGuiLock = TRUE;
 895         static wxMsgArray s_aSavedMessages;
 896
 897         // if a secondary thread owns is doing GUI calls, save all messages for
 898         // later processing - we can't process them right now because it will
 899         // lead to recursive library calls (and we're not reentrant)
 900         if ( !wxGuiOwnedByMainThread() )
 901         {
 902             s_hadGuiLock = FALSE;
 903
 904             // leave out WM_COMMAND messages: too dangerous, sometimes
 905             // the message will be processed twice
 906             if ( !wxIsWaitingForThread() ||
 907                     s_currentMsg.message != WM_COMMAND )
 908             {
 909                 s_aSavedMessages.Add(s_currentMsg);
 910             }
 911
 912             return TRUE;
 913         }
 914         else
 915         {
 916             // have we just regained the GUI lock? if so, post all of the saved
 917             // messages
 918             //
 919             // FIXME of course, it's not _exactly_ the same as processing the
 920             //       messages normally - expect some things to break...
 921             if ( !s_hadGuiLock )
 922             {
 923                 s_hadGuiLock = TRUE;
 924
 925                 size_t count = s_aSavedMessages.GetCount();
 926                 for ( size_t n = 0; n < count; n++ )
 927                 {
 928                     MSG& msg = s_aSavedMessages[n];
 929
 930                     DoMessage((WXMSG *)&msg);
 931                 }
 932
 933                 s_aSavedMessages.Empty();
 934             }
 935         }
 936 #endif // wxUSE_THREADS
 937
 938         // Process the message
 939         DoMessage((WXMSG *)&s_currentMsg);
 940     }
 941
 942     return TRUE;
 943 }
 944
 945 void wxApp::DoMessage(WXMSG *pMsg)
 946 {
 947     if ( !ProcessMessage(pMsg) )
 948     {
 949         ::TranslateMessage((MSG *)pMsg);
 950         ::DispatchMessage((MSG *)pMsg);
 951     }
 952 }
 953
 954 /*
 955  * Keep trying to process messages until WM_QUIT
 956  * received.
 957  *
 958  * If there are messages to be processed, they will all be
 959  * processed and OnIdle will not be called.
 960  * When there are no more messages, OnIdle is called.
 961  * If OnIdle requests more time,
 962  * it will be repeatedly called so long as there are no pending messages.
 963  * A 'feature' of this is that once OnIdle has decided that no more processing
 964  * is required, then it won't get processing time until further messages
 965  * are processed (it'll sit in DoMessage).
 966  */
 967
 968 int wxApp::MainLoop()
 969 {
 970     m_keepGoing = TRUE;
 971
 972     while ( m_keepGoing )
 973     {
 974 #if wxUSE_THREADS
 975         wxMutexGuiLeaveOrEnter();
 976 #endif // wxUSE_THREADS
 977
 978         while ( !Pending() && ProcessIdle() )
 979             ;
 980
 981         // a message came or no more idle processing to do
 982         DoMessage();
 983     }
 984
 985     return s_currentMsg.wParam;
 986 }
 987
 988 // Returns TRUE if more time is needed.
 989 bool wxApp::ProcessIdle()
 990 {
 991     wxIdleEvent event;
 992     event.SetEventObject(this);
 993     ProcessEvent(event);
 994
 995     return event.MoreRequested();
 996 }
 997
 998 void wxApp::ExitMainLoop()
 999 {
1000     // VZ: why not ::PostQuitMessage()?
1001     m_keepGoing = FALSE;
1002 }
1003
1004 bool wxApp::Pending()
1005 {
1006     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
1007 }
1008
1009 void wxApp::Dispatch()
1010 {
1011     DoMessage();
1012 }
1013
1014 /*
1015  * Give all windows a chance to preprocess
1016  * the message. Some may have accelerator tables, or have
1017  * MDI complications.
1018  */
1019
1020 bool wxApp::ProcessMessage(WXMSG *wxmsg)
1021 {
1022     MSG *msg = (MSG *)wxmsg;
1023     HWND hwnd = msg->hwnd;
1024     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
1025
1026     // this may happen if the event occured in a standard modeless dialog (the
1027     // only example of which I know of is the find/replace dialog) - then call
1028     // IsDialogMessage() to make TAB navigation in it work
1029     if ( !wndThis )
1030     {
1031         // we need to find the dialog containing this control as
1032         // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
1033         // them) if we call it for the control itself
1034         while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
1035         {
1036             hwnd = ::GetParent(hwnd);
1037         }
1038
1039         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
1040     }
1041
1042 #if wxUSE_TOOLTIPS
1043     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1044     // popup the tooltip bubbles
1045     if ( (msg->message == WM_MOUSEMOVE) )
1046     {
1047         wxToolTip *tt = wndThis->GetToolTip();
1048         if ( tt )
1049         {
1050             tt->RelayEvent(wxmsg);
1051         }
1052     }
1053 #endif // wxUSE_TOOLTIPS
1054
1055     // allow the window to prevent certain messages from being
1056     // translated/processed (this is currently used by wxTextCtrl to always
1057     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
1058     if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
1059     {
1060         return FALSE;
1061     }
1062
1063     // try translations first: the accelerators override everything
1064     wxWindow *wnd;
1065
1066     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1067     {
1068         if ( wnd->MSWTranslateMessage(wxmsg))
1069             return TRUE;
1070
1071         // stop at first top level window, i.e. don't try to process the key
1072         // strokes originating in a dialog using the accelerators of the parent
1073         // frame - this doesn't make much sense
1074         if ( wnd->IsTopLevel() )
1075             break;
1076     }
1077
1078     // now try the other hooks (kbd navigation is handled here): we start from
1079     // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
1080     // called above
1081     for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
1082     {
1083         if ( wnd->MSWProcessMessage(wxmsg) )
1084             return TRUE;
1085     }
1086
1087     // no special preprocessing for this message, dispatch it normally
1088     return FALSE;
1089 }
1090
1091 void wxApp::OnIdle(wxIdleEvent& event)
1092 {
1093     static bool s_inOnIdle = FALSE;
1094
1095     // Avoid recursion (via ProcessEvent default case)
1096     if ( s_inOnIdle )
1097         return;
1098
1099     s_inOnIdle = TRUE;
1100
1101     // If there are pending events, we must process them: pending events
1102     // are either events to the threads other than main or events posted
1103     // with wxPostEvent() functions
1104     // GRG: I have moved this here so that all pending events are processed
1105     //   before starting to delete any objects. This behaves better (in
1106     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1107     //   behaviour. Changed Feb/2000 before 2.1.14
1108     ProcessPendingEvents();
1109
1110     // 'Garbage' collection of windows deleted with Close().
1111     DeletePendingObjects();
1112
1113 #if wxUSE_LOG
1114     // flush the logged messages if any
1115     wxLog::FlushActive();
1116 #endif // wxUSE_LOG
1117
1118 #if wxUSE_DC_CACHEING
1119     // automated DC cache management: clear the cached DCs and bitmap
1120     // if it's likely that the app has finished with them, that is, we
1121     // get an idle event and we're not dragging anything.
1122     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
1123         wxDC::ClearCache();
1124 #endif // wxUSE_DC_CACHEING
1125
1126     // Send OnIdle events to all windows
1127     if ( SendIdleEvents() )
1128     {
1129         // SendIdleEvents() returns TRUE if at least one window requested more
1130         // idle events
1131         event.RequestMore(TRUE);
1132     }
1133
1134     s_inOnIdle = FALSE;
1135 }
1136
1137 // Send idle event to all top-level windows
1138 bool wxApp::SendIdleEvents()
1139 {
1140     bool needMore = FALSE;
1141
1142     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1143     while (node)
1144     {
1145         wxWindow* win = node->GetData();
1146         if (SendIdleEvents(win))
1147             needMore = TRUE;
1148         node = node->GetNext();
1149     }
1150
1151     return needMore;
1152 }
1153
1154 // Send idle event to window and all subwindows
1155 bool wxApp::SendIdleEvents(wxWindow* win)
1156 {
1157     bool needMore = FALSE;
1158
1159     wxIdleEvent event;
1160     event.SetEventObject(win);
1161     win->GetEventHandler()->ProcessEvent(event);
1162
1163     if (event.MoreRequested())
1164         needMore = TRUE;
1165
1166     wxNode* node = win->GetChildren().First();
1167     while (node)
1168     {
1169         wxWindow* win = (wxWindow*) node->Data();
1170         if (SendIdleEvents(win))
1171             needMore = TRUE;
1172
1173         node = node->Next();
1174     }
1175     return needMore;
1176 }
1177
1178 void wxApp::DeletePendingObjects()
1179 {
1180     wxNode *node = wxPendingDelete.First();
1181     while (node)
1182     {
1183         wxObject *obj = (wxObject *)node->Data();
1184
1185         delete obj;
1186
1187         if (wxPendingDelete.Member(obj))
1188             delete node;
1189
1190         // Deleting one object may have deleted other pending
1191         // objects, so start from beginning of list again.
1192         node = wxPendingDelete.First();
1193     }
1194 }
1195
1196 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1197 {
1198     if (GetTopWindow())
1199         GetTopWindow()->Close(TRUE);
1200 }
1201
1202 // Default behaviour: close the application with prompts. The
1203 // user can veto the close, and therefore the end session.
1204 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1205 {
1206     if (GetTopWindow())
1207     {
1208         if (!GetTopWindow()->Close(!event.CanVeto()))
1209             event.Veto(TRUE);
1210     }
1211 }
1212
1213 /* static */
1214 int wxApp::GetComCtl32Version()
1215 {
1216 #ifdef __WXMICROWIN__
1217     return 0;
1218 #else
1219     // cache the result
1220     static int s_verComCtl32 = -1;
1221
1222     wxCRIT_SECT_DECLARE(csComCtl32);
1223     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1224
1225     if ( s_verComCtl32 == -1 )
1226     {
1227         // initally assume no comctl32.dll at all
1228         s_verComCtl32 = 0;
1229
1230         // do we have it?
1231         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1232
1233         // if so, then we can check for the version
1234         if ( hModuleComCtl32 )
1235         {
1236             // try to use DllGetVersion() if available in _headers_
1237             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1238                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1239                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1240                 if ( pfnDllGetVersion )
1241                 {
1242                     DLLVERSIONINFO dvi;
1243                     dvi.cbSize = sizeof(dvi);
1244
1245                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1246                     if ( FAILED(hr) )
1247                     {
1248                         wxLogApiError(_T("DllGetVersion"), hr);
1249                     }
1250                     else
1251                     {
1252                         // this is incompatible with _WIN32_IE values, but
1253                         // compatible with the other values returned by
1254                         // GetComCtl32Version()
1255                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1256                                             dvi.dwMinorVersion;
1257                     }
1258                 }
1259             #endif
1260                 // DllGetVersion() unavailable either during compile or
1261                 // run-time, try to guess the version otherwise
1262                 if ( !s_verComCtl32 )
1263                 {
1264                     // InitCommonControlsEx is unique to 4.70 and later
1265                     FARPROC theProc = ::GetProcAddress
1266                                         (
1267                                          hModuleComCtl32,
1268                                          "InitCommonControlsEx"
1269                                         );
1270
1271                     if ( !theProc )
1272                     {
1273                         // not found, must be 4.00
1274                         s_verComCtl32 = 400;
1275                     }
1276                     else
1277                     {
1278                         // many symbols appeared in comctl32 4.71, could use
1279                         // any of them except may be DllInstall
1280                         theProc = ::GetProcAddress
1281                                     (
1282                                      hModuleComCtl32,
1283                                      "InitializeFlatSB"
1284                                     );
1285                         if ( !theProc )
1286                         {
1287                             // not found, must be 4.70
1288                             s_verComCtl32 = 470;
1289                         }
1290                         else
1291                         {
1292                             // found, must be 4.71
1293                             s_verComCtl32 = 471;
1294                         }
1295                     }
1296                 }
1297         }
1298     }
1299
1300     return s_verComCtl32;
1301 #endif
1302 }
1303
1304 void wxExit()
1305 {
1306     wxLogError(_("Fatal error: exiting"));
1307
1308     wxApp::CleanUp();
1309     exit(0);
1310 }
1311
1312 // Yield to incoming messages
1313
1314 bool wxApp::Yield(bool onlyIfNeeded)
1315 {
1316     // MT-FIXME
1317     static bool s_inYield = FALSE;
1318
1319     // disable log flushing from here because a call to wxYield() shouldn't
1320     // normally result in message boxes popping up &c
1321     wxLog::Suspend();
1322
1323     if ( s_inYield )
1324     {
1325         if ( !onlyIfNeeded )
1326         {
1327             wxFAIL_MSG( wxT("wxYield called recursively" ) );
1328         }
1329
1330         return FALSE;
1331     }
1332
1333     s_inYield = TRUE;
1334
1335     // we don't want to process WM_QUIT from here - it should be processed in
1336     // the main event loop in order to stop it
1337     MSG msg;
1338     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1339             msg.message != WM_QUIT )
1340     {
1341 #if wxUSE_THREADS
1342         wxMutexGuiLeaveOrEnter();
1343 #endif // wxUSE_THREADS
1344
1345         if ( !wxTheApp->DoMessage() )
1346             break;
1347     }
1348
1349     // if there are pending events, we must process them.
1350     ProcessPendingEvents();
1351
1352     // let the logs be flashed again
1353     wxLog::Resume();
1354
1355     s_inYield = FALSE;
1356
1357     return TRUE;
1358 }
1359
1360 bool wxHandleFatalExceptions(bool doit)
1361 {
1362 #if wxUSE_ON_FATAL_EXCEPTION
1363     // assume this can only be called from the main thread
1364     gs_handleExceptions = doit;
1365
1366     return TRUE;
1367 #else
1368     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to use this function"));
1369
1370     (void)doit;
1371     return FALSE;
1372 #endif
1373 }
1374
1375 //-----------------------------------------------------------------------------
1376 // wxWakeUpIdle
1377 //-----------------------------------------------------------------------------
1378
1379 void wxWakeUpIdle()
1380 {
1381     // Send the top window a dummy message so idle handler processing will
1382     // start up again.  Doing it this way ensures that the idle handler
1383     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1384     // the same for the main app thread only)
1385     wxWindow *topWindow = wxTheApp->GetTopWindow();
1386     if ( topWindow )
1387     {
1388         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1389         {
1390             // should never happen
1391             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1392         }
1393     }
1394 }
1395
1396 //-----------------------------------------------------------------------------
1397
1398 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1399 // if in a separate file. So include it here to ensure it's linked.
1400 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1401 #include "main.cpp"
1402 #endif