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
   9 // Licence:     wxWindows licence
  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_TOOLTIPS
  69     #include "wx/tooltip.h"
  70 #endif // wxUSE_TOOLTIPS
  71
  72 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
  73 // compilers don't support it (missing headers, libs, ...)
  74 #if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__) || defined(__SALFORDC__)
  75     #undef wxUSE_OLE
  76
  77     #define  wxUSE_OLE 0
  78 #endif // broken compilers
  79
  80 #if wxUSE_OLE
  81     #include <ole2.h>
  82 #endif
  83
  84 #include <string.h>
  85 #include <ctype.h>
  86
  87 #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__))
  88     #include <commctrl.h>
  89 #endif
  90
  91 #ifndef __WXMICROWIN__
  92 #include "wx/msw/msvcrt.h"
  93 #endif
  94
  95 // ----------------------------------------------------------------------------
  96 // conditional compilation
  97 // ----------------------------------------------------------------------------
  98
  99 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
 100 // defined before) and shows us what common control features are available
 101 // during the compile time (it doesn't mean that they will be available during
 102 // the run-time, use GetComCtl32Version() to test for them!). The possible
 103 // values are:
 104 //
 105 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 106 // 0x0300                      4.70              IE 3.x
 107 // 0x0400                      4.71              IE 4.0
 108 // 0x0401                      4.72              IE 4.01 and Win98
 109 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 110
 111 #ifndef _WIN32_IE
 112     // minimal set of features by default
 113     #define _WIN32_IE 0x0200
 114 #endif
 115
 116 #if _WIN32_IE >= 0x0300 && \
 117     (!defined(__MINGW32__) || wxCHECK_W32API_VERSION( 2, 0 )) && \
 118     !defined(__CYGWIN__)
 119     #include <shlwapi.h>
 120 #endif
 121
 122 // ---------------------------------------------------------------------------
 123 // global variables
 124 // ---------------------------------------------------------------------------
 125
 126 extern wxChar *wxBuffer;
 127 extern wxList WXDLLEXPORT wxPendingDelete;
 128 #ifndef __WXMICROWIN__
 129 extern void wxSetKeyboardHook(bool doIt);
 130 #endif
 131
 132 MSG s_currentMsg;
 133 wxApp *wxTheApp = NULL;
 134
 135 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 136 //     with NR suffix - wxWindow::MSWCreate() supposes this
 137 const wxChar *wxCanvasClassName        = wxT("wxWindowClass");
 138 const wxChar *wxCanvasClassNameNR      = wxT("wxWindowClassNR");
 139 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 140 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 141 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 142 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 143
 144 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 145 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 146 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 147
 148 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 149 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 150 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 151
 152 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 153
 154 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 155
 156 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
 157 //       needs compiler support for Win32 SEH. Others (especially Borland)
 158 //       probably have it too, but I'm not sure about how it works
 159 // JACS: get 'Cannot use __try in functions that require unwinding
 160 // in Unicode mode, so disabling.
 161 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
 162     #undef wxUSE_ON_FATAL_EXCEPTION
 163     #define wxUSE_ON_FATAL_EXCEPTION 0
 164 #endif // VC++
 165
 166 #if wxUSE_ON_FATAL_EXCEPTION
 167     static bool gs_handleExceptions = FALSE;
 168 #endif
 169
 170 // ===========================================================================
 171 // implementation
 172 // ===========================================================================
 173
 174 // ---------------------------------------------------------------------------
 175 // wxApp
 176 // ---------------------------------------------------------------------------
 177
 178 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 179
 180 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 181     EVT_IDLE(wxApp::OnIdle)
 182     EVT_END_SESSION(wxApp::OnEndSession)
 183     EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 184 END_EVENT_TABLE()
 185
 186 //// Initialize
 187 bool wxApp::Initialize()
 188 {
 189     // the first thing to do is to check if we're trying to run an Unicode
 190     // program under Win9x w/o MSLU emulation layer - if so, abort right now
 191     // as it has no chance to work
 192 #if wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 193     if ( wxGetOsVersion() != wxWINDOWS_NT )
 194     {
 195         // note that we can use MessageBoxW() as it's implemented even under
 196         // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
 197         // used by wxLocale are not
 198         ::MessageBox
 199         (
 200          NULL,
 201          _T("This program uses Unicode and requires Windows NT/2000/XP.\nProgram aborted."),
 202          _T("wxWindows Fatal Error"),
 203          MB_ICONERROR | MB_OK
 204         );
 205
 206         return FALSE;
 207     }
 208 #endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 209
 210     wxBuffer = new wxChar[1500]; // FIXME
 211
 212     wxClassInfo::InitializeClasses();
 213
 214 #if wxUSE_THREADS
 215     wxPendingEventsLocker = new wxCriticalSection;
 216 #endif
 217
 218     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 219     wxTheColourDatabase->Initialize();
 220
 221     wxInitializeStockLists();
 222     wxInitializeStockObjects();
 223
 224     wxBitmap::InitStandardHandlers();
 225
 226 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 227     InitCommonControls();
 228 #endif // __WIN95__
 229
 230 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 231
 232 #ifdef __WIN16__
 233     // for OLE, enlarge message queue to be as large as possible
 234     int iMsg = 96;
 235     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 236         ;
 237 #endif // Win16
 238
 239 #if wxUSE_OLE
 240     // we need to initialize OLE library
 241     if ( FAILED(::OleInitialize(NULL)) )
 242         wxLogError(_("Cannot initialize OLE"));
 243 #endif
 244
 245 #endif // wxUSE_OLE
 246
 247 #if wxUSE_CTL3D
 248     if (!Ctl3dRegister(wxhInstance))
 249         wxLogError(wxT("Cannot register CTL3D"));
 250
 251     Ctl3dAutoSubclass(wxhInstance);
 252 #endif // wxUSE_CTL3D
 253
 254     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 255 #if 0
 256     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 257     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 258     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 259
 260     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 261     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 262     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 263 #endif // 0
 264
 265     RegisterWindowClasses();
 266
 267 #ifndef __WXMICROWIN__
 268     // Create the brush for disabling bitmap buttons
 269
 270     LOGBRUSH lb;
 271     lb.lbStyle = BS_PATTERN;
 272     lb.lbColor = 0;
 273     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 274     if ( lb.lbHatch )
 275     {
 276         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 277         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 278     }
 279     //else: wxWindows resources are probably not linked in
 280 #endif
 281
 282 #if wxUSE_PENWINDOWS
 283     wxRegisterPenWin();
 284 #endif
 285
 286     wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
 287
 288     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 289     // PLEASE DO NOT ALTER THIS.
 290 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 291     extern char wxDummyChar;
 292     if (wxDummyChar) wxDummyChar++;
 293 #endif
 294
 295 #ifndef __WXMICROWIN__
 296     wxSetKeyboardHook(TRUE);
 297 #endif
 298
 299     wxModule::RegisterModules();
 300     if (!wxModule::InitializeModules())
 301         return FALSE;
 302     return TRUE;
 303 }
 304
 305 // ---------------------------------------------------------------------------
 306 // RegisterWindowClasses
 307 // ---------------------------------------------------------------------------
 308
 309 // TODO we should only register classes really used by the app. For this it
 310 //      would be enough to just delay the class registration until an attempt
 311 //      to create a window of this class is made.
 312 bool wxApp::RegisterWindowClasses()
 313 {
 314     WNDCLASS wndclass;
 315     wxZeroMemory(wndclass);
 316
 317     // for each class we register one with CS_(V|H)REDRAW style and one
 318     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 319     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 320     static const long styleNoRedraw = CS_DBLCLKS;
 321
 322     // the fields which are common to all classes
 323     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 324     wndclass.hInstance     = wxhInstance;
 325     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 326
 327     // Register the frame window class.
 328     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 329     wndclass.lpszClassName = wxCanvasClassName;
 330     wndclass.style         = styleNormal;
 331
 332     if ( !RegisterClass(&wndclass) )
 333     {
 334         wxLogLastError(wxT("RegisterClass(frame)"));
 335     }
 336
 337     // "no redraw" frame
 338     wndclass.lpszClassName = wxCanvasClassNameNR;
 339     wndclass.style         = styleNoRedraw;
 340
 341     if ( !RegisterClass(&wndclass) )
 342     {
 343         wxLogLastError(wxT("RegisterClass(no redraw frame)"));
 344     }
 345
 346     // Register the MDI frame window class.
 347     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 348     wndclass.lpszClassName = wxMDIFrameClassName;
 349     wndclass.style         = styleNormal;
 350
 351     if ( !RegisterClass(&wndclass) )
 352     {
 353         wxLogLastError(wxT("RegisterClass(MDI parent)"));
 354     }
 355
 356     // "no redraw" MDI frame
 357     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 358     wndclass.style         = styleNoRedraw;
 359
 360     if ( !RegisterClass(&wndclass) )
 361     {
 362         wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
 363     }
 364
 365     // Register the MDI child frame window class.
 366     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 367     wndclass.lpszClassName = wxMDIChildFrameClassName;
 368     wndclass.style         = styleNormal;
 369
 370     if ( !RegisterClass(&wndclass) )
 371     {
 372         wxLogLastError(wxT("RegisterClass(MDI child)"));
 373     }
 374
 375     // "no redraw" MDI child frame
 376     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 377     wndclass.style         = styleNoRedraw;
 378
 379     if ( !RegisterClass(&wndclass) )
 380     {
 381         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
 382     }
 383
 384     return TRUE;
 385 }
 386
 387 // ---------------------------------------------------------------------------
 388 // UnregisterWindowClasses
 389 // ---------------------------------------------------------------------------
 390
 391 bool wxApp::UnregisterWindowClasses()
 392 {
 393     bool retval = TRUE;
 394
 395 #ifndef __WXMICROWIN__
 396     // MDI frame window class.
 397     if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) )
 398     {
 399         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 400
 401         retval = FALSE;
 402     }
 403
 404     // "no redraw" MDI frame
 405     if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
 406     {
 407         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 408
 409         retval = FALSE;
 410     }
 411
 412     // MDI child frame window class.
 413     if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
 414     {
 415         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 416
 417         retval = FALSE;
 418     }
 419
 420     // "no redraw" MDI child frame
 421     if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
 422     {
 423         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 424
 425         retval = FALSE;
 426     }
 427
 428     // canvas class name
 429     if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) )
 430     {
 431         wxLogLastError(wxT("UnregisterClass(canvas)"));
 432
 433         retval = FALSE;
 434     }
 435
 436     if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
 437     {
 438         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 439
 440         retval = FALSE;
 441     }
 442 #endif // __WXMICROWIN__
 443
 444     return retval;
 445 }
 446
 447 // ---------------------------------------------------------------------------
 448 // Convert Windows to argc, argv style
 449 // ---------------------------------------------------------------------------
 450
 451 void wxApp::ConvertToStandardCommandArgs(const char* lpCmdLine)
 452 {
 453     // break the command line in words
 454     wxArrayString args =
 455         wxCmdLineParser::ConvertStringToArgs(wxConvertMB2WX(lpCmdLine));
 456
 457     // +1 here for the program name
 458     argc = args.GetCount() + 1;
 459
 460     // and +1 here for the terminating NULL
 461     argv = new wxChar *[argc + 1];
 462
 463     argv[0] = new wxChar[260]; // 260 is MAX_PATH value from windef.h
 464     ::GetModuleFileName(wxhInstance, argv[0], 260);
 465
 466     // also set the app name from argv[0]
 467     wxString name;
 468     wxFileName::SplitPath(argv[0], NULL, &name, NULL);
 469
 470     // but don't override the name already set by the user code, if any
 471     if ( GetAppName().empty() )
 472         SetAppName(name);
 473
 474     // copy all the other arguments to wxApp::argv[]
 475     for ( int i = 1; i < argc; i++ )
 476     {
 477         argv[i] = copystring(args[i - 1]);
 478     }
 479
 480     // argv[] must be NULL-terminated
 481     argv[argc] = NULL;
 482 }
 483
 484 //// Cleans up any wxWindows internal structures left lying around
 485
 486 void wxApp::CleanUp()
 487 {
 488     //// COMMON CLEANUP
 489
 490 #if wxUSE_LOG
 491     // flush the logged messages if any and install a 'safer' log target: the
 492     // default one (wxLogGui) can't be used after the resources are freed just
 493     // below and the user suppliedo ne might be even more unsafe (using any
 494     // wxWindows GUI function is unsafe starting from now)
 495     wxLog::DontCreateOnDemand();
 496
 497     // this will flush the old messages if any
 498     delete wxLog::SetActiveTarget(new wxLogStderr);
 499 #endif // wxUSE_LOG
 500
 501     // One last chance for pending objects to be cleaned up
 502     wxTheApp->DeletePendingObjects();
 503
 504     wxModule::CleanUpModules();
 505
 506     wxDeleteStockObjects();
 507
 508     // Destroy all GDI lists, etc.
 509     wxDeleteStockLists();
 510
 511     delete wxTheColourDatabase;
 512     wxTheColourDatabase = NULL;
 513
 514     wxBitmap::CleanUpHandlers();
 515
 516     delete[] wxBuffer;
 517     wxBuffer = NULL;
 518
 519     //// WINDOWS-SPECIFIC CLEANUP
 520
 521 #ifndef __WXMICROWIN__
 522     wxSetKeyboardHook(FALSE);
 523 #endif
 524
 525 #if wxUSE_PENWINDOWS
 526     wxCleanUpPenWin();
 527 #endif
 528
 529     if (wxSTD_FRAME_ICON)
 530         DestroyIcon(wxSTD_FRAME_ICON);
 531     if (wxSTD_MDICHILDFRAME_ICON)
 532         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 533     if (wxSTD_MDIPARENTFRAME_ICON)
 534         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 535
 536     if (wxDEFAULT_FRAME_ICON)
 537         DestroyIcon(wxDEFAULT_FRAME_ICON);
 538     if (wxDEFAULT_MDICHILDFRAME_ICON)
 539         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 540     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 541         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 542
 543     if ( wxDisableButtonBrush )
 544         ::DeleteObject( wxDisableButtonBrush );
 545
 546 #if wxUSE_OLE
 547     ::OleUninitialize();
 548 #endif
 549
 550 #ifdef WXMAKINGDLL
 551     // for an EXE the classes are unregistered when it terminates but DLL may
 552     // be loaded several times (load/unload/load) into the same process in
 553     // which case the registration will fail after the first time if we don't
 554     // unregister the classes now
 555     UnregisterWindowClasses();
 556 #endif // WXMAKINGDLL
 557
 558 #if wxUSE_CTL3D
 559     Ctl3dUnregister(wxhInstance);
 560 #endif
 561
 562     delete wxWinHandleHash;
 563     wxWinHandleHash = NULL; // Set to null in case anything later tries to ref it.
 564
 565     delete wxPendingEvents;
 566     wxPendingEvents = NULL; // Set to null because wxAppBase::wxEvtHandler is destroyed later.
 567
 568 #if wxUSE_THREADS
 569     delete wxPendingEventsLocker;
 570     wxPendingEventsLocker = NULL; // Set to null because wxAppBase::wxEvtHandler is destroyed later.
 571     // If we don't do the following, we get an apparent memory leak
 572 #if wxUSE_VALIDATORS
 573     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 574 #endif // wxUSE_VALIDATORS
 575 #endif // wxUSE_THREADS
 576
 577     wxClassInfo::CleanUpClasses();
 578
 579     delete wxTheApp;
 580     wxTheApp = NULL;
 581
 582 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 583     // At this point we want to check if there are any memory
 584     // blocks that aren't part of the wxDebugContext itself,
 585     // as a special case. Then when dumping we need to ignore
 586     // wxDebugContext, too.
 587     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 588     {
 589         wxLogMessage(wxT("There were memory leaks."));
 590         wxDebugContext::Dump();
 591         wxDebugContext::PrintStatistics();
 592     }
 593     //  wxDebugContext::SetStream(NULL, NULL);
 594 #endif
 595
 596 #if wxUSE_LOG
 597     // do it as the very last thing because everything else can log messages
 598     delete wxLog::SetActiveTarget(NULL);
 599 #endif // wxUSE_LOG
 600 }
 601
 602 //----------------------------------------------------------------------
 603 // Entry point helpers, used by wxPython
 604 //----------------------------------------------------------------------
 605
 606 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 607 {
 608     return wxApp::Initialize();
 609 }
 610
 611 int WXDLLEXPORT wxEntryInitGui()
 612 {
 613     return wxTheApp->OnInitGui();
 614 }
 615
 616 void WXDLLEXPORT wxEntryCleanup()
 617 {
 618     wxApp::CleanUp();
 619 }
 620
 621
 622 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 623
 624 // temporarily disable this warning which would be generated in release builds
 625 // because of __try
 626 #ifdef __VISUALC__
 627     #pragma warning(disable: 4715) // not all control paths return a value
 628 #endif // Visual C++
 629
 630 //----------------------------------------------------------------------
 631 // Main wxWindows entry point
 632 //----------------------------------------------------------------------
 633 int wxEntry(WXHINSTANCE hInstance,
 634             WXHINSTANCE WXUNUSED(hPrevInstance),
 635             char *lpCmdLine,
 636             int nCmdShow,
 637             bool enterLoop)
 638 {
 639     // do check for memory leaks on program exit
 640     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 641     //  deallocated memory which may be used to simulate low-memory condition)
 642 #ifndef __WXMICROWIN__
 643     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 644 #endif
 645
 646 #ifdef __MWERKS__
 647 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 648     // This seems to be necessary since there are 'rogue'
 649     // objects present at this point (perhaps global objects?)
 650     // Setting a checkpoint will ignore them as far as the
 651     // memory checking facility is concerned.
 652     // Of course you may argue that memory allocated in globals should be
 653     // checked, but this is a reasonable compromise.
 654     wxDebugContext::SetCheckpoint();
 655 #endif
 656 #endif
 657
 658     // take everything into a try-except block to be able to call
 659     // OnFatalException() if necessary
 660 #if wxUSE_ON_FATAL_EXCEPTION
 661     __try {
 662 #endif
 663         wxhInstance = (HINSTANCE) hInstance;
 664
 665         if (!wxEntryStart(0,0))
 666             return 0;
 667
 668         // create the application object or ensure that one already exists
 669         if (!wxTheApp)
 670         {
 671             // The app may have declared a global application object, but we recommend
 672             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 673             // function for delayed, dynamic app object construction.
 674             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 675                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 676
 677             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 678         }
 679
 680         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 681
 682         // save the WinMain() parameters
 683         if (lpCmdLine) // MicroWindows passes NULL
 684             wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 685         wxTheApp->m_nCmdShow = nCmdShow;
 686
 687         // We really don't want timestamps by default, because it means
 688         // we can't simply double-click on the error message and get to that
 689         // line in the source. So VC++ at least, let's have a sensible default.
 690 #ifdef __VISUALC__
 691 #if wxUSE_LOG
 692         wxLog::SetTimestamp(NULL);
 693 #endif // wxUSE_LOG
 694 #endif // __VISUALC__
 695
 696         // init the app
 697         int retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 698
 699         if ( retValue == 0 )
 700         {
 701             if ( enterLoop )
 702             {
 703                 // run the main loop
 704                 wxTheApp->OnRun();
 705             }
 706             else
 707             {
 708                 // we want to initialize, but not run or exit immediately.
 709                 return 1;
 710             }
 711         }
 712         //else: app initialization failed, so we skipped OnRun()
 713
 714         wxWindow *topWindow = wxTheApp->GetTopWindow();
 715         if ( topWindow )
 716         {
 717             // Forcibly delete the window.
 718             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 719                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 720             {
 721                 topWindow->Close(TRUE);
 722                 wxTheApp->DeletePendingObjects();
 723             }
 724             else
 725             {
 726                 delete topWindow;
 727                 wxTheApp->SetTopWindow(NULL);
 728             }
 729         }
 730
 731         retValue = wxTheApp->OnExit();
 732
 733         wxEntryCleanup();
 734
 735         return retValue;
 736
 737 #if wxUSE_ON_FATAL_EXCEPTION
 738     }
 739     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 740                                    : EXCEPTION_CONTINUE_SEARCH ) {
 741         if ( wxTheApp )
 742         {
 743            // give the user a chance to do something special about this
 744            wxTheApp->OnFatalException();
 745         }
 746
 747         ::ExitProcess(3); // the same exit code as abort()
 748
 749         // NOTREACHED
 750     }
 751 #endif // wxUSE_ON_FATAL_EXCEPTION
 752 }
 753
 754 // restore warning state
 755 #ifdef __VISUALC__
 756     #pragma warning(default: 4715) // not all control paths return a value
 757 #endif // Visual C++
 758
 759 #else /*  _WINDLL  */
 760
 761 //----------------------------------------------------------------------
 762 // Entry point for wxWindows + the App in a DLL
 763 //----------------------------------------------------------------------
 764
 765 int wxEntry(WXHINSTANCE hInstance)
 766 {
 767     wxhInstance = (HINSTANCE) hInstance;
 768     wxEntryStart(0, 0);
 769
 770     // The app may have declared a global application object, but we recommend
 771     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 772     // for delayed, dynamic app object construction.
 773     if (!wxTheApp)
 774     {
 775         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 776                      "No initializer - use IMPLEMENT_APP macro." );
 777
 778         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 779     }
 780
 781     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 782
 783     wxTheApp->argc = 0;
 784     wxTheApp->argv = NULL;
 785
 786     wxEntryInitGui();
 787
 788     wxTheApp->OnInit();
 789
 790     wxWindow *topWindow = wxTheApp->GetTopWindow();
 791     if ( topWindow && topWindow->GetHWND())
 792     {
 793         topWindow->Show(TRUE);
 794     }
 795
 796     return 1;
 797 }
 798 #endif // _WINDLL
 799
 800 //// Static member initialization
 801
 802 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 803
 804 wxApp::wxApp()
 805 {
 806     argc = 0;
 807     argv = NULL;
 808     m_printMode = wxPRINT_WINDOWS;
 809     m_auto3D = TRUE;
 810 }
 811
 812 wxApp::~wxApp()
 813 {
 814     // Delete command-line args
 815     int i;
 816     for (i = 0; i < argc; i++)
 817     {
 818         delete[] argv[i];
 819     }
 820     delete[] argv;
 821 }
 822
 823 bool wxApp::Initialized()
 824 {
 825 #ifndef _WINDLL
 826     if (GetTopWindow())
 827         return TRUE;
 828     else
 829         return FALSE;
 830 #else // Assume initialized if DLL (no way of telling)
 831     return TRUE;
 832 #endif
 833 }
 834
 835 /*
 836  * Get and process a message, returning FALSE if WM_QUIT
 837  * received (and also set the flag telling the app to exit the main loop)
 838  *
 839  */
 840 bool wxApp::DoMessage()
 841 {
 842     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 843     if ( rc == 0 )
 844     {
 845         // got WM_QUIT
 846         m_keepGoing = FALSE;
 847
 848         return FALSE;
 849     }
 850     else if ( rc == -1 )
 851     {
 852         // should never happen, but let's test for it nevertheless
 853         wxLogLastError(wxT("GetMessage"));
 854     }
 855     else
 856     {
 857 #if wxUSE_THREADS
 858         wxASSERT_MSG( wxThread::IsMain(),
 859                       wxT("only the main thread can process Windows messages") );
 860
 861         static bool s_hadGuiLock = TRUE;
 862         static wxMsgArray s_aSavedMessages;
 863
 864         // if a secondary thread owns is doing GUI calls, save all messages for
 865         // later processing - we can't process them right now because it will
 866         // lead to recursive library calls (and we're not reentrant)
 867         if ( !wxGuiOwnedByMainThread() )
 868         {
 869             s_hadGuiLock = FALSE;
 870
 871             // leave out WM_COMMAND messages: too dangerous, sometimes
 872             // the message will be processed twice
 873             if ( !wxIsWaitingForThread() ||
 874                     s_currentMsg.message != WM_COMMAND )
 875             {
 876                 s_aSavedMessages.Add(s_currentMsg);
 877             }
 878
 879             return TRUE;
 880         }
 881         else
 882         {
 883             // have we just regained the GUI lock? if so, post all of the saved
 884             // messages
 885             //
 886             // FIXME of course, it's not _exactly_ the same as processing the
 887             //       messages normally - expect some things to break...
 888             if ( !s_hadGuiLock )
 889             {
 890                 s_hadGuiLock = TRUE;
 891
 892                 size_t count = s_aSavedMessages.GetCount();
 893                 for ( size_t n = 0; n < count; n++ )
 894                 {
 895                     MSG& msg = s_aSavedMessages[n];
 896
 897                     DoMessage((WXMSG *)&msg);
 898                 }
 899
 900                 s_aSavedMessages.Empty();
 901             }
 902         }
 903 #endif // wxUSE_THREADS
 904
 905         // Process the message
 906         DoMessage((WXMSG *)&s_currentMsg);
 907     }
 908
 909     return TRUE;
 910 }
 911
 912 void wxApp::DoMessage(WXMSG *pMsg)
 913 {
 914     if ( !ProcessMessage(pMsg) )
 915     {
 916         ::TranslateMessage((MSG *)pMsg);
 917         ::DispatchMessage((MSG *)pMsg);
 918     }
 919 }
 920
 921 /*
 922  * Keep trying to process messages until WM_QUIT
 923  * received.
 924  *
 925  * If there are messages to be processed, they will all be
 926  * processed and OnIdle will not be called.
 927  * When there are no more messages, OnIdle is called.
 928  * If OnIdle requests more time,
 929  * it will be repeatedly called so long as there are no pending messages.
 930  * A 'feature' of this is that once OnIdle has decided that no more processing
 931  * is required, then it won't get processing time until further messages
 932  * are processed (it'll sit in DoMessage).
 933  */
 934
 935 int wxApp::MainLoop()
 936 {
 937     m_keepGoing = TRUE;
 938
 939     while ( m_keepGoing )
 940     {
 941 #if wxUSE_THREADS
 942         wxMutexGuiLeaveOrEnter();
 943 #endif // wxUSE_THREADS
 944
 945         while ( !Pending() && ProcessIdle() )
 946             ;
 947
 948         // a message came or no more idle processing to do
 949         DoMessage();
 950     }
 951
 952     return s_currentMsg.wParam;
 953 }
 954
 955 // Returns TRUE if more time is needed.
 956 bool wxApp::ProcessIdle()
 957 {
 958     wxIdleEvent event;
 959     event.SetEventObject(this);
 960     ProcessEvent(event);
 961
 962     return event.MoreRequested();
 963 }
 964
 965 void wxApp::ExitMainLoop()
 966 {
 967     // this will set m_keepGoing to FALSE a bit later
 968     ::PostQuitMessage(0);
 969 }
 970
 971 bool wxApp::Pending()
 972 {
 973     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
 974 }
 975
 976 void wxApp::Dispatch()
 977 {
 978     DoMessage();
 979 }
 980
 981 /*
 982  * Give all windows a chance to preprocess
 983  * the message. Some may have accelerator tables, or have
 984  * MDI complications.
 985  */
 986
 987 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 988 {
 989     MSG *msg = (MSG *)wxmsg;
 990     HWND hwnd = msg->hwnd;
 991     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
 992
 993     // this may happen if the event occured in a standard modeless dialog (the
 994     // only example of which I know of is the find/replace dialog) - then call
 995     // IsDialogMessage() to make TAB navigation in it work
 996     if ( !wndThis )
 997     {
 998         // we need to find the dialog containing this control as
 999         // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
1000         // them) if we call it for the control itself
1001         while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
1002         {
1003             hwnd = ::GetParent(hwnd);
1004         }
1005
1006         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
1007     }
1008
1009 #if wxUSE_TOOLTIPS
1010     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1011     // popup the tooltip bubbles
1012     if ( (msg->message == WM_MOUSEMOVE) )
1013     {
1014         wxToolTip *tt = wndThis->GetToolTip();
1015         if ( tt )
1016         {
1017             tt->RelayEvent(wxmsg);
1018         }
1019     }
1020 #endif // wxUSE_TOOLTIPS
1021
1022     // allow the window to prevent certain messages from being
1023     // translated/processed (this is currently used by wxTextCtrl to always
1024     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
1025     if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
1026     {
1027         return FALSE;
1028     }
1029
1030     // try translations first: the accelerators override everything
1031     wxWindow *wnd;
1032
1033     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1034     {
1035         if ( wnd->MSWTranslateMessage(wxmsg))
1036             return TRUE;
1037
1038         // stop at first top level window, i.e. don't try to process the key
1039         // strokes originating in a dialog using the accelerators of the parent
1040         // frame - this doesn't make much sense
1041         if ( wnd->IsTopLevel() )
1042             break;
1043     }
1044
1045     // now try the other hooks (kbd navigation is handled here): we start from
1046     // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
1047     // called above
1048     for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
1049     {
1050         if ( wnd->MSWProcessMessage(wxmsg) )
1051             return TRUE;
1052     }
1053
1054     // no special preprocessing for this message, dispatch it normally
1055     return FALSE;
1056 }
1057
1058 // this is a temporary hack and will be replaced by using wxEventLoop in the
1059 // future
1060 //
1061 // it is needed to allow other event loops (currently only one: the modal
1062 // dialog one) to reset the OnIdle() semaphore because otherwise OnIdle()
1063 // wouldn't do anything while a modal dialog shown from OnIdle() call is shown.
1064 bool wxIsInOnIdleFlag = FALSE;
1065
1066 void wxApp::OnIdle(wxIdleEvent& event)
1067 {
1068     // Avoid recursion (via ProcessEvent default case)
1069     if ( wxIsInOnIdleFlag )
1070         return;
1071
1072     wxIsInOnIdleFlag = TRUE;
1073
1074     // If there are pending events, we must process them: pending events
1075     // are either events to the threads other than main or events posted
1076     // with wxPostEvent() functions
1077     // GRG: I have moved this here so that all pending events are processed
1078     //   before starting to delete any objects. This behaves better (in
1079     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1080     //   behaviour. Changed Feb/2000 before 2.1.14
1081     ProcessPendingEvents();
1082
1083     // 'Garbage' collection of windows deleted with Close().
1084     DeletePendingObjects();
1085
1086 #if wxUSE_LOG
1087     // flush the logged messages if any
1088     wxLog::FlushActive();
1089 #endif // wxUSE_LOG
1090
1091 #if wxUSE_DC_CACHEING
1092     // automated DC cache management: clear the cached DCs and bitmap
1093     // if it's likely that the app has finished with them, that is, we
1094     // get an idle event and we're not dragging anything.
1095     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
1096         wxDC::ClearCache();
1097 #endif // wxUSE_DC_CACHEING
1098
1099     // Send OnIdle events to all windows
1100     if ( SendIdleEvents() )
1101     {
1102         // SendIdleEvents() returns TRUE if at least one window requested more
1103         // idle events
1104         event.RequestMore(TRUE);
1105     }
1106
1107     wxIsInOnIdleFlag = FALSE;
1108 }
1109
1110 // Send idle event to all top-level windows
1111 bool wxApp::SendIdleEvents()
1112 {
1113     bool needMore = FALSE;
1114
1115     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1116     while (node)
1117     {
1118         wxWindow* win = node->GetData();
1119         if (SendIdleEvents(win))
1120             needMore = TRUE;
1121         node = node->GetNext();
1122     }
1123
1124     return needMore;
1125 }
1126
1127 // Send idle event to window and all subwindows
1128 bool wxApp::SendIdleEvents(wxWindow* win)
1129 {
1130     wxIdleEvent event;
1131     event.SetEventObject(win);
1132     win->GetEventHandler()->ProcessEvent(event);
1133
1134     bool needMore = event.MoreRequested();
1135
1136     wxWindowList::Node *node = win->GetChildren().GetFirst();
1137     while ( node )
1138     {
1139         wxWindow *win = node->GetData();
1140         if (SendIdleEvents(win))
1141             needMore = TRUE;
1142
1143         node = node->GetNext();
1144     }
1145
1146     return needMore;
1147 }
1148
1149 void wxApp::DeletePendingObjects()
1150 {
1151     wxNode *node = wxPendingDelete.GetFirst();
1152     while (node)
1153     {
1154         wxObject *obj = node->GetData();
1155
1156         delete obj;
1157
1158         if (wxPendingDelete.Member(obj))
1159             delete node;
1160
1161         // Deleting one object may have deleted other pending
1162         // objects, so start from beginning of list again.
1163         node = wxPendingDelete.GetFirst();
1164     }
1165 }
1166
1167 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1168 {
1169     if (GetTopWindow())
1170         GetTopWindow()->Close(TRUE);
1171 }
1172
1173 // Default behaviour: close the application with prompts. The
1174 // user can veto the close, and therefore the end session.
1175 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1176 {
1177     if (GetTopWindow())
1178     {
1179         if (!GetTopWindow()->Close(!event.CanVeto()))
1180             event.Veto(TRUE);
1181     }
1182 }
1183
1184 typedef struct _WXADllVersionInfo
1185 {
1186         DWORD cbSize;
1187         DWORD dwMajorVersion;                   // Major version
1188         DWORD dwMinorVersion;                   // Minor version
1189         DWORD dwBuildNumber;                    // Build number
1190         DWORD dwPlatformID;                     // DLLVER_PLATFORM_*
1191 } WXADLLVERSIONINFO;
1192
1193 typedef HRESULT (CALLBACK* WXADLLGETVERSIONPROC)(WXADLLVERSIONINFO *);
1194
1195 /* static */
1196 int wxApp::GetComCtl32Version()
1197 {
1198 #ifdef __WXMICROWIN__
1199     return 0;
1200 #else
1201     // cache the result
1202     static int s_verComCtl32 = -1;
1203
1204     wxCRIT_SECT_DECLARE(csComCtl32);
1205     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1206
1207     if ( s_verComCtl32 == -1 )
1208     {
1209         // initally assume no comctl32.dll at all
1210         s_verComCtl32 = 0;
1211
1212         // do we have it?
1213         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1214         BOOL bFreeComCtl32 = FALSE ;
1215         if(!hModuleComCtl32)
1216         {
1217             hModuleComCtl32 = ::LoadLibrary(wxT("COMCTL32.DLL")) ;
1218             if(hModuleComCtl32)
1219             {
1220                 bFreeComCtl32 = TRUE ;
1221             }
1222         }
1223
1224         // if so, then we can check for the version
1225         if ( hModuleComCtl32 )
1226         {
1227             // try to use DllGetVersion() if available in _headers_
1228                 WXADLLGETVERSIONPROC pfnDllGetVersion = (WXADLLGETVERSIONPROC)
1229                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1230                 if ( pfnDllGetVersion )
1231                 {
1232                     WXADLLVERSIONINFO dvi;
1233                     dvi.cbSize = sizeof(dvi);
1234
1235                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1236                     if ( FAILED(hr) )
1237                     {
1238                         wxLogApiError(_T("DllGetVersion"), hr);
1239                     }
1240                     else
1241                     {
1242                         // this is incompatible with _WIN32_IE values, but
1243                         // compatible with the other values returned by
1244                         // GetComCtl32Version()
1245                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1246                                             dvi.dwMinorVersion;
1247                     }
1248                 }
1249                 // DllGetVersion() unavailable either during compile or
1250                 // run-time, try to guess the version otherwise
1251                 if ( !s_verComCtl32 )
1252                 {
1253                     // InitCommonControlsEx is unique to 4.70 and later
1254                     FARPROC theProc = ::GetProcAddress
1255                                         (
1256                                          hModuleComCtl32,
1257                                          "InitCommonControlsEx"
1258                                         );
1259
1260                     if ( !theProc )
1261                     {
1262                         // not found, must be 4.00
1263                         s_verComCtl32 = 400;
1264                     }
1265                     else
1266                     {
1267                         // many symbols appeared in comctl32 4.71, could use
1268                         // any of them except may be DllInstall
1269                         theProc = ::GetProcAddress
1270                                     (
1271                                      hModuleComCtl32,
1272                                      "InitializeFlatSB"
1273                                     );
1274                         if ( !theProc )
1275                         {
1276                             // not found, must be 4.70
1277                             s_verComCtl32 = 470;
1278                         }
1279                         else
1280                         {
1281                             // found, must be 4.71
1282                             s_verComCtl32 = 471;
1283                         }
1284                     }
1285                 }
1286         }
1287
1288         if(bFreeComCtl32)
1289         {
1290             ::FreeLibrary(hModuleComCtl32) ;
1291         }
1292     }
1293
1294     return s_verComCtl32;
1295 #endif
1296 }
1297
1298 void wxExit()
1299 {
1300     if ( wxTheApp )
1301     {
1302         wxTheApp->ExitMainLoop();
1303     }
1304     else
1305     {
1306         // what else can we do?
1307         exit(-1);
1308     }
1309 }
1310
1311 // Yield to incoming messages
1312
1313 bool wxApp::Yield(bool onlyIfNeeded)
1314 {
1315     // MT-FIXME
1316     static bool s_inYield = FALSE;
1317
1318 #if wxUSE_LOG
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 #endif // wxUSE_LOG
1323
1324     if ( s_inYield )
1325     {
1326         if ( !onlyIfNeeded )
1327         {
1328             wxFAIL_MSG( wxT("wxYield called recursively" ) );
1329         }
1330
1331         return FALSE;
1332     }
1333
1334     s_inYield = TRUE;
1335
1336     // we don't want to process WM_QUIT from here - it should be processed in
1337     // the main event loop in order to stop it
1338     MSG msg;
1339     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1340             msg.message != WM_QUIT )
1341     {
1342 #if wxUSE_THREADS
1343         wxMutexGuiLeaveOrEnter();
1344 #endif // wxUSE_THREADS
1345
1346         if ( !wxTheApp->DoMessage() )
1347             break;
1348     }
1349
1350     // if there are pending events, we must process them.
1351     ProcessPendingEvents();
1352
1353 #if wxUSE_LOG
1354     // let the logs be flashed again
1355     wxLog::Resume();
1356 #endif // wxUSE_LOG
1357
1358     s_inYield = FALSE;
1359
1360     return TRUE;
1361 }
1362
1363 bool wxHandleFatalExceptions(bool doit)
1364 {
1365 #if wxUSE_ON_FATAL_EXCEPTION
1366     // assume this can only be called from the main thread
1367     gs_handleExceptions = doit;
1368
1369     return TRUE;
1370 #else
1371     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to use this function"));
1372
1373     (void)doit;
1374     return FALSE;
1375 #endif
1376 }
1377
1378 //-----------------------------------------------------------------------------
1379 // wxWakeUpIdle
1380 //-----------------------------------------------------------------------------
1381
1382 void wxWakeUpIdle()
1383 {
1384     // Send the top window a dummy message so idle handler processing will
1385     // start up again.  Doing it this way ensures that the idle handler
1386     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1387     // the same for the main app thread only)
1388     wxWindow *topWindow = wxTheApp->GetTopWindow();
1389     if ( topWindow )
1390     {
1391         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1392         {
1393             // should never happen
1394             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1395         }
1396     }
1397 }
1398
1399 //-----------------------------------------------------------------------------
1400
1401 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1402 // if in a separate file. So include it here to ensure it's linked.
1403 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__WINE__) && !defined(WXMAKINGDLL))
1404 #include "main.cpp"
1405 #endif