src/msw/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "app.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/pen.h"
  37     #include "wx/brush.h"
  38     #include "wx/cursor.h"
  39     #include "wx/icon.h"
  40     #include "wx/palette.h"
  41     #include "wx/dc.h"
  42     #include "wx/dialog.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45     #include "wx/dynarray.h"
  46     #include "wx/wxchar.h"
  47     #include "wx/icon.h"
  48     #include "wx/log.h"
  49 #endif
  50
  51 #include "wx/cmdline.h"
  52 #include "wx/filename.h"
  53 #include "wx/module.h"
  54
  55 #include "wx/msw/private.h"
  56
  57 #if wxUSE_THREADS
  58     #include "wx/thread.h"
  59
  60     // define the array of MSG strutures
  61     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  62
  63     #include "wx/arrimpl.cpp"
  64
  65     WX_DEFINE_OBJARRAY(wxMsgArray);
  66 #endif // wxUSE_THREADS
  67
  68 #if wxUSE_WX_RESOURCES
  69     #include "wx/resource.h"
  70 #endif
  71
  72 #if wxUSE_TOOLTIPS
  73     #include "wx/tooltip.h"
  74 #endif // wxUSE_TOOLTIPS
  75
  76 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
  77 // compilers don't support it (missing headers, libs, ...)
  78 #if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__)
  79     #undef wxUSE_OLE
  80
  81     #define  wxUSE_OLE 0
  82 #endif // broken compilers
  83
  84 #if wxUSE_OLE
  85     #include <ole2.h>
  86 #endif
  87
  88 #include <string.h>
  89 #include <ctype.h>
  90
  91 #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__))
  92     #include <commctrl.h>
  93 #endif
  94
  95 #ifndef __WXMICROWIN__
  96 #include "wx/msw/msvcrt.h"
  97 #endif
  98
  99 // ----------------------------------------------------------------------------
 100 // conditional compilation
 101 // ----------------------------------------------------------------------------
 102
 103 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
 104 // defined before) and shows us what common control features are available
 105 // during the compile time (it doesn't mean that they will be available during
 106 // the run-time, use GetComCtl32Version() to test for them!). The possible
 107 // values are:
 108 //
 109 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 110 // 0x0300                      4.70              IE 3.x
 111 // 0x0400                      4.71              IE 4.0
 112 // 0x0401                      4.72              IE 4.01 and Win98
 113 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 114
 115 #ifndef _WIN32_IE
 116     // minimal set of features by default
 117     #define _WIN32_IE 0x0200
 118 #endif
 119
 120 #if _WIN32_IE >= 0x0300 && \
 121     (!defined(__MINGW32__) || wxCHECK_W32API_VERSION( 2, 0 ))
 122     #include <shlwapi.h>
 123 #endif
 124
 125 // ---------------------------------------------------------------------------
 126 // global variables
 127 // ---------------------------------------------------------------------------
 128
 129 extern wxChar *wxBuffer;
 130 extern wxList WXDLLEXPORT wxPendingDelete;
 131 #ifndef __WXMICROWIN__
 132 extern void wxSetKeyboardHook(bool doIt);
 133 #endif
 134
 135 MSG s_currentMsg;
 136 wxApp *wxTheApp = NULL;
 137
 138 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 139 //     with NR suffix - wxWindow::MSWCreate() supposes this
 140 const wxChar *wxCanvasClassName        = wxT("wxWindowClass");
 141 const wxChar *wxCanvasClassNameNR      = wxT("wxWindowClassNR");
 142 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 143 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 144 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 145 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 146
 147 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 148 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 149 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 150
 151 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 152 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 153 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 154
 155 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 156
 157 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 158
 159 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
 160 //       needs compiler support for Win32 SEH. Others (especially Borland)
 161 //       probably have it too, but I'm not sure about how it works
 162 // JACS: get 'Cannot use __try in functions that require unwinding
 163 // in Unicode mode, so disabling.
 164 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
 165     #undef wxUSE_ON_FATAL_EXCEPTION
 166     #define wxUSE_ON_FATAL_EXCEPTION 0
 167 #endif // VC++
 168
 169 #if wxUSE_ON_FATAL_EXCEPTION
 170     static bool gs_handleExceptions = FALSE;
 171 #endif
 172
 173 // ===========================================================================
 174 // implementation
 175 // ===========================================================================
 176
 177 // ---------------------------------------------------------------------------
 178 // wxApp
 179 // ---------------------------------------------------------------------------
 180
 181 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 182
 183 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 184     EVT_IDLE(wxApp::OnIdle)
 185     EVT_END_SESSION(wxApp::OnEndSession)
 186     EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 187 END_EVENT_TABLE()
 188
 189 //// Initialize
 190 bool wxApp::Initialize()
 191 {
 192     // the first thing to do is to check if we're trying to run an Unicode
 193     // program under Win9x w/o MSLU emulation layer - if so, abort right now
 194     // as it has no chance to work
 195 #if wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 196     if ( wxGetOsVersion() != wxWINDOWS_NT )
 197     {
 198         // note that we can use MessageBoxW() as it's implemented even under
 199         // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
 200         // used by wxLocale are not
 201         ::MessageBox
 202         (
 203          NULL,
 204          _T("This program uses Unicode and requires Windows NT/2000/XP.\nProgram aborted."),
 205          _T("wxWindows Fatal Error"),
 206          MB_ICONERROR | MB_OK
 207         );
 208
 209         return FALSE;
 210     }
 211 #endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 212
 213     wxBuffer = new wxChar[1500]; // FIXME
 214
 215     wxClassInfo::InitializeClasses();
 216
 217 #if wxUSE_THREADS
 218     wxPendingEventsLocker = new wxCriticalSection;
 219 #endif
 220
 221     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 222     wxTheColourDatabase->Initialize();
 223
 224     wxInitializeStockLists();
 225     wxInitializeStockObjects();
 226
 227 #if wxUSE_WX_RESOURCES
 228     wxInitializeResourceSystem();
 229 #endif
 230
 231     wxBitmap::InitStandardHandlers();
 232
 233 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 234     InitCommonControls();
 235 #endif // __WIN95__
 236
 237 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 238
 239 #ifdef __WIN16__
 240     // for OLE, enlarge message queue to be as large as possible
 241     int iMsg = 96;
 242     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 243         ;
 244 #endif // Win16
 245
 246 #if wxUSE_OLE
 247     // we need to initialize OLE library
 248     if ( FAILED(::OleInitialize(NULL)) )
 249         wxLogError(_("Cannot initialize OLE"));
 250 #endif
 251
 252 #endif // wxUSE_OLE
 253
 254 #if wxUSE_CTL3D
 255     if (!Ctl3dRegister(wxhInstance))
 256         wxLogError(wxT("Cannot register CTL3D"));
 257
 258     Ctl3dAutoSubclass(wxhInstance);
 259 #endif // wxUSE_CTL3D
 260
 261     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 262 #if 0
 263     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 264     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 265     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 266
 267     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 268     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 269     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 270 #endif // 0
 271
 272     RegisterWindowClasses();
 273
 274 #ifndef __WXMICROWIN__
 275     // Create the brush for disabling bitmap buttons
 276
 277     LOGBRUSH lb;
 278     lb.lbStyle = BS_PATTERN;
 279     lb.lbColor = 0;
 280     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 281     if ( lb.lbHatch )
 282     {
 283         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 284         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 285     }
 286     //else: wxWindows resources are probably not linked in
 287 #endif
 288
 289 #if wxUSE_PENWINDOWS
 290     wxRegisterPenWin();
 291 #endif
 292
 293     wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
 294
 295     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 296     // PLEASE DO NOT ALTER THIS.
 297 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 298     extern char wxDummyChar;
 299     if (wxDummyChar) wxDummyChar++;
 300 #endif
 301
 302 #ifndef __WXMICROWIN__
 303     wxSetKeyboardHook(TRUE);
 304 #endif
 305
 306     wxModule::RegisterModules();
 307     if (!wxModule::InitializeModules())
 308         return FALSE;
 309     return TRUE;
 310 }
 311
 312 // ---------------------------------------------------------------------------
 313 // RegisterWindowClasses
 314 // ---------------------------------------------------------------------------
 315
 316 // TODO we should only register classes really used by the app. For this it
 317 //      would be enough to just delay the class registration until an attempt
 318 //      to create a window of this class is made.
 319 bool wxApp::RegisterWindowClasses()
 320 {
 321     WNDCLASS wndclass;
 322     wxZeroMemory(wndclass);
 323
 324     // for each class we register one with CS_(V|H)REDRAW style and one
 325     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 326     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 327     static const long styleNoRedraw = CS_DBLCLKS;
 328
 329     // the fields which are common to all classes
 330     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 331     wndclass.hInstance     = wxhInstance;
 332     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 333
 334     // Register the frame window class.
 335     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 336     wndclass.lpszClassName = wxCanvasClassName;
 337     wndclass.style         = styleNormal;
 338
 339     if ( !RegisterClass(&wndclass) )
 340     {
 341         wxLogLastError(wxT("RegisterClass(frame)"));
 342     }
 343
 344     // "no redraw" frame
 345     wndclass.lpszClassName = wxCanvasClassNameNR;
 346     wndclass.style         = styleNoRedraw;
 347
 348     if ( !RegisterClass(&wndclass) )
 349     {
 350         wxLogLastError(wxT("RegisterClass(no redraw frame)"));
 351     }
 352
 353     // Register the MDI frame window class.
 354     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 355     wndclass.lpszClassName = wxMDIFrameClassName;
 356     wndclass.style         = styleNormal;
 357
 358     if ( !RegisterClass(&wndclass) )
 359     {
 360         wxLogLastError(wxT("RegisterClass(MDI parent)"));
 361     }
 362
 363     // "no redraw" MDI frame
 364     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 365     wndclass.style         = styleNoRedraw;
 366
 367     if ( !RegisterClass(&wndclass) )
 368     {
 369         wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
 370     }
 371
 372     // Register the MDI child frame window class.
 373     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 374     wndclass.lpszClassName = wxMDIChildFrameClassName;
 375     wndclass.style         = styleNormal;
 376
 377     if ( !RegisterClass(&wndclass) )
 378     {
 379         wxLogLastError(wxT("RegisterClass(MDI child)"));
 380     }
 381
 382     // "no redraw" MDI child frame
 383     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 384     wndclass.style         = styleNoRedraw;
 385
 386     if ( !RegisterClass(&wndclass) )
 387     {
 388         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
 389     }
 390
 391     return TRUE;
 392 }
 393
 394 // ---------------------------------------------------------------------------
 395 // UnregisterWindowClasses
 396 // ---------------------------------------------------------------------------
 397
 398 bool wxApp::UnregisterWindowClasses()
 399 {
 400     bool retval = TRUE;
 401
 402 #ifndef __WXMICROWIN__
 403     // MDI frame window class.
 404     if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) )
 405     {
 406         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 407
 408         retval = FALSE;
 409     }
 410
 411     // "no redraw" MDI frame
 412     if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
 413     {
 414         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 415
 416         retval = FALSE;
 417     }
 418
 419     // MDI child frame window class.
 420     if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
 421     {
 422         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 423
 424         retval = FALSE;
 425     }
 426
 427     // "no redraw" MDI child frame
 428     if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
 429     {
 430         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 431
 432         retval = FALSE;
 433     }
 434
 435     // canvas class name
 436     if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) )
 437     {
 438         wxLogLastError(wxT("UnregisterClass(canvas)"));
 439
 440         retval = FALSE;
 441     }
 442
 443     if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
 444     {
 445         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 446
 447         retval = FALSE;
 448     }
 449 #endif // __WXMICROWIN__
 450
 451     return retval;
 452 }
 453
 454 // ---------------------------------------------------------------------------
 455 // Convert Windows to argc, argv style
 456 // ---------------------------------------------------------------------------
 457
 458 void wxApp::ConvertToStandardCommandArgs(const char* lpCmdLine)
 459 {
 460     // break the command line in words
 461     wxArrayString args =
 462         wxCmdLineParser::ConvertStringToArgs(wxConvertMB2WX(lpCmdLine));
 463
 464     // +1 here for the program name
 465     argc = args.GetCount() + 1;
 466
 467     // and +1 here for the terminating NULL
 468     argv = new wxChar *[argc + 1];
 469
 470     argv[0] = new wxChar[260]; // 260 is MAX_PATH value from windef.h
 471     ::GetModuleFileName(wxhInstance, argv[0], 260);
 472
 473     // also set the app name from argv[0]
 474     wxString name;
 475     wxFileName::SplitPath(argv[0], NULL, &name, NULL);
 476
 477     // but don't override the name already set by the user code, if any
 478     if ( GetAppName().empty() )
 479         SetAppName(name);
 480
 481     // copy all the other arguments to wxApp::argv[]
 482     for ( int i = 1; i < argc; i++ )
 483     {
 484         argv[i] = copystring(args[i - 1]);
 485     }
 486
 487     // argv[] must be NULL-terminated
 488     argv[argc] = NULL;
 489 }
 490
 491 //// Cleans up any wxWindows internal structures left lying around
 492
 493 void wxApp::CleanUp()
 494 {
 495     //// COMMON CLEANUP
 496
 497 #if wxUSE_LOG
 498     // flush the logged messages if any and install a 'safer' log target: the
 499     // default one (wxLogGui) can't be used after the resources are freed just
 500     // below and the user suppliedo ne might be even more unsafe (using any
 501     // wxWindows GUI function is unsafe starting from now)
 502     wxLog::DontCreateOnDemand();
 503
 504     // this will flush the old messages if any
 505     delete wxLog::SetActiveTarget(new wxLogStderr);
 506 #endif // wxUSE_LOG
 507
 508     // One last chance for pending objects to be cleaned up
 509     wxTheApp->DeletePendingObjects();
 510
 511     wxModule::CleanUpModules();
 512
 513 #if wxUSE_WX_RESOURCES
 514     wxCleanUpResourceSystem();
 515
 516     //  wxDefaultResourceTable->ClearTable();
 517 #endif
 518
 519     wxDeleteStockObjects();
 520
 521     // Destroy all GDI lists, etc.
 522     wxDeleteStockLists();
 523
 524     delete wxTheColourDatabase;
 525     wxTheColourDatabase = NULL;
 526
 527     wxBitmap::CleanUpHandlers();
 528
 529     delete[] wxBuffer;
 530     wxBuffer = NULL;
 531
 532     //// WINDOWS-SPECIFIC CLEANUP
 533
 534 #ifndef __WXMICROWIN__
 535     wxSetKeyboardHook(FALSE);
 536 #endif
 537
 538 #if wxUSE_PENWINDOWS
 539     wxCleanUpPenWin();
 540 #endif
 541
 542     if (wxSTD_FRAME_ICON)
 543         DestroyIcon(wxSTD_FRAME_ICON);
 544     if (wxSTD_MDICHILDFRAME_ICON)
 545         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 546     if (wxSTD_MDIPARENTFRAME_ICON)
 547         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 548
 549     if (wxDEFAULT_FRAME_ICON)
 550         DestroyIcon(wxDEFAULT_FRAME_ICON);
 551     if (wxDEFAULT_MDICHILDFRAME_ICON)
 552         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 553     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 554         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 555
 556     if ( wxDisableButtonBrush )
 557         ::DeleteObject( wxDisableButtonBrush );
 558
 559 #if wxUSE_OLE
 560     ::OleUninitialize();
 561 #endif
 562
 563 #ifdef WXMAKINGDLL
 564     // for an EXE the classes are unregistered when it terminates but DLL may
 565     // be loaded several times (load/unload/load) into the same process in
 566     // which case the registration will fail after the first time if we don't
 567     // unregister the classes now
 568     UnregisterWindowClasses();
 569 #endif // WXMAKINGDLL
 570
 571 #if wxUSE_CTL3D
 572     Ctl3dUnregister(wxhInstance);
 573 #endif
 574
 575     delete wxWinHandleHash;
 576
 577     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 578     // create a module for that as it's part of the core.
 579     delete wxPendingEvents;
 580
 581 #if wxUSE_THREADS
 582     delete wxPendingEventsLocker;
 583     // If we don't do the following, we get an apparent memory leak
 584 #if wxUSE_VALIDATORS
 585     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 586 #endif // wxUSE_VALIDATORS
 587 #endif // wxUSE_THREADS
 588
 589     wxClassInfo::CleanUpClasses();
 590
 591     delete wxTheApp;
 592     wxTheApp = NULL;
 593
 594 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 595     // At this point we want to check if there are any memory
 596     // blocks that aren't part of the wxDebugContext itself,
 597     // as a special case. Then when dumping we need to ignore
 598     // wxDebugContext, too.
 599     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 600     {
 601         wxLogMessage(wxT("There were memory leaks."));
 602         wxDebugContext::Dump();
 603         wxDebugContext::PrintStatistics();
 604     }
 605     //  wxDebugContext::SetStream(NULL, NULL);
 606 #endif
 607
 608 #if wxUSE_LOG
 609     // do it as the very last thing because everything else can log messages
 610     delete wxLog::SetActiveTarget(NULL);
 611 #endif // wxUSE_LOG
 612 }
 613
 614 //----------------------------------------------------------------------
 615 // Entry point helpers, used by wxPython
 616 //----------------------------------------------------------------------
 617
 618 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 619 {
 620     return wxApp::Initialize();
 621 }
 622
 623 int WXDLLEXPORT wxEntryInitGui()
 624 {
 625     return wxTheApp->OnInitGui();
 626 }
 627
 628 void WXDLLEXPORT wxEntryCleanup()
 629 {
 630     wxApp::CleanUp();
 631 }
 632
 633
 634 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 635
 636 // temporarily disable this warning which would be generated in release builds
 637 // because of __try
 638 #ifdef __VISUALC__
 639     #pragma warning(disable: 4715) // not all control paths return a value
 640 #endif // Visual C++
 641
 642 //----------------------------------------------------------------------
 643 // Main wxWindows entry point
 644 //----------------------------------------------------------------------
 645 int wxEntry(WXHINSTANCE hInstance,
 646             WXHINSTANCE WXUNUSED(hPrevInstance),
 647             char *lpCmdLine,
 648             int nCmdShow,
 649             bool enterLoop)
 650 {
 651     // do check for memory leaks on program exit
 652     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 653     //  deallocated memory which may be used to simulate low-memory condition)
 654 #ifndef __WXMICROWIN__
 655     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 656 #endif
 657
 658 #ifdef __MWERKS__
 659 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 660     // This seems to be necessary since there are 'rogue'
 661     // objects present at this point (perhaps global objects?)
 662     // Setting a checkpoint will ignore them as far as the
 663     // memory checking facility is concerned.
 664     // Of course you may argue that memory allocated in globals should be
 665     // checked, but this is a reasonable compromise.
 666     wxDebugContext::SetCheckpoint();
 667 #endif
 668 #endif
 669
 670     // take everything into a try-except block to be able to call
 671     // OnFatalException() if necessary
 672 #if wxUSE_ON_FATAL_EXCEPTION
 673     __try {
 674 #endif
 675         wxhInstance = (HINSTANCE) hInstance;
 676
 677         if (!wxEntryStart(0,0))
 678             return 0;
 679
 680         // create the application object or ensure that one already exists
 681         if (!wxTheApp)
 682         {
 683             // The app may have declared a global application object, but we recommend
 684             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 685             // function for delayed, dynamic app object construction.
 686             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 687                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 688
 689             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 690         }
 691
 692         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 693
 694         // save the WinMain() parameters
 695         if (lpCmdLine) // MicroWindows passes NULL
 696             wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 697         wxTheApp->m_nCmdShow = nCmdShow;
 698
 699         // We really don't want timestamps by default, because it means
 700         // we can't simply double-click on the error message and get to that
 701         // line in the source. So VC++ at least, let's have a sensible default.
 702 #ifdef __VISUALC__
 703         wxLog::SetTimestamp(NULL);
 704 #endif
 705
 706         // init the app
 707         int retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 708
 709         if ( retValue == 0 )
 710         {
 711             if ( enterLoop )
 712             {
 713                 // run the main loop
 714                 retValue = wxTheApp->OnRun();
 715             }
 716             else
 717             {
 718                 // we want to initialize, but not run or exit immediately.
 719                 return 1;
 720             }
 721         }
 722         //else: app initialization failed, so we skipped OnRun()
 723
 724         wxWindow *topWindow = wxTheApp->GetTopWindow();
 725         if ( topWindow )
 726         {
 727             // Forcibly delete the window.
 728             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 729                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 730             {
 731                 topWindow->Close(TRUE);
 732                 wxTheApp->DeletePendingObjects();
 733             }
 734             else
 735             {
 736                 delete topWindow;
 737                 wxTheApp->SetTopWindow(NULL);
 738             }
 739         }
 740
 741         wxTheApp->OnExit();
 742
 743         wxEntryCleanup();
 744
 745         return retValue;
 746
 747 #if wxUSE_ON_FATAL_EXCEPTION
 748     }
 749     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 750                                    : EXCEPTION_CONTINUE_SEARCH ) {
 751         if ( wxTheApp )
 752         {
 753            // give the user a chance to do something special about this
 754            wxTheApp->OnFatalException();
 755         }
 756
 757         ::ExitProcess(3); // the same exit code as abort()
 758
 759         // NOTREACHED
 760     }
 761 #endif // wxUSE_ON_FATAL_EXCEPTION
 762 }
 763
 764 // restore warning state
 765 #ifdef __VISUALC__
 766     #pragma warning(default: 4715) // not all control paths return a value
 767 #endif // Visual C++
 768
 769 #else /*  _WINDLL  */
 770
 771 //----------------------------------------------------------------------
 772 // Entry point for wxWindows + the App in a DLL
 773 //----------------------------------------------------------------------
 774
 775 int wxEntry(WXHINSTANCE hInstance)
 776 {
 777     wxhInstance = (HINSTANCE) hInstance;
 778     wxEntryStart(0, 0);
 779
 780     // The app may have declared a global application object, but we recommend
 781     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 782     // for delayed, dynamic app object construction.
 783     if (!wxTheApp)
 784     {
 785         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 786                      "No initializer - use IMPLEMENT_APP macro." );
 787
 788         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 789     }
 790
 791     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 792
 793     wxTheApp->argc = 0;
 794     wxTheApp->argv = NULL;
 795
 796     wxEntryInitGui();
 797
 798     wxTheApp->OnInit();
 799
 800     wxWindow *topWindow = wxTheApp->GetTopWindow();
 801     if ( topWindow && topWindow->GetHWND())
 802     {
 803         topWindow->Show(TRUE);
 804     }
 805
 806     return 1;
 807 }
 808 #endif // _WINDLL
 809
 810 //// Static member initialization
 811
 812 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 813
 814 wxApp::wxApp()
 815 {
 816     argc = 0;
 817     argv = NULL;
 818     m_printMode = wxPRINT_WINDOWS;
 819     m_auto3D = TRUE;
 820 }
 821
 822 wxApp::~wxApp()
 823 {
 824     // Delete command-line args
 825     int i;
 826     for (i = 0; i < argc; i++)
 827     {
 828         delete[] argv[i];
 829     }
 830     delete[] argv;
 831 }
 832
 833 bool wxApp::Initialized()
 834 {
 835 #ifndef _WINDLL
 836     if (GetTopWindow())
 837         return TRUE;
 838     else
 839         return FALSE;
 840 #else // Assume initialized if DLL (no way of telling)
 841     return TRUE;
 842 #endif
 843 }
 844
 845 /*
 846  * Get and process a message, returning FALSE if WM_QUIT
 847  * received (and also set the flag telling the app to exit the main loop)
 848  *
 849  */
 850 bool wxApp::DoMessage()
 851 {
 852     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 853     if ( rc == 0 )
 854     {
 855         // got WM_QUIT
 856         m_keepGoing = FALSE;
 857
 858         return FALSE;
 859     }
 860     else if ( rc == -1 )
 861     {
 862         // should never happen, but let's test for it nevertheless
 863         wxLogLastError(wxT("GetMessage"));
 864     }
 865     else
 866     {
 867 #if wxUSE_THREADS
 868         wxASSERT_MSG( wxThread::IsMain(),
 869                       wxT("only the main thread can process Windows messages") );
 870
 871         static bool s_hadGuiLock = TRUE;
 872         static wxMsgArray s_aSavedMessages;
 873
 874         // if a secondary thread owns is doing GUI calls, save all messages for
 875         // later processing - we can't process them right now because it will
 876         // lead to recursive library calls (and we're not reentrant)
 877         if ( !wxGuiOwnedByMainThread() )
 878         {
 879             s_hadGuiLock = FALSE;
 880
 881             // leave out WM_COMMAND messages: too dangerous, sometimes
 882             // the message will be processed twice
 883             if ( !wxIsWaitingForThread() ||
 884                     s_currentMsg.message != WM_COMMAND )
 885             {
 886                 s_aSavedMessages.Add(s_currentMsg);
 887             }
 888
 889             return TRUE;
 890         }
 891         else
 892         {
 893             // have we just regained the GUI lock? if so, post all of the saved
 894             // messages
 895             //
 896             // FIXME of course, it's not _exactly_ the same as processing the
 897             //       messages normally - expect some things to break...
 898             if ( !s_hadGuiLock )
 899             {
 900                 s_hadGuiLock = TRUE;
 901
 902                 size_t count = s_aSavedMessages.GetCount();
 903                 for ( size_t n = 0; n < count; n++ )
 904                 {
 905                     MSG& msg = s_aSavedMessages[n];
 906
 907                     DoMessage((WXMSG *)&msg);
 908                 }
 909
 910                 s_aSavedMessages.Empty();
 911             }
 912         }
 913 #endif // wxUSE_THREADS
 914
 915         // Process the message
 916         DoMessage((WXMSG *)&s_currentMsg);
 917     }
 918
 919     return TRUE;
 920 }
 921
 922 void wxApp::DoMessage(WXMSG *pMsg)
 923 {
 924     if ( !ProcessMessage(pMsg) )
 925     {
 926         ::TranslateMessage((MSG *)pMsg);
 927         ::DispatchMessage((MSG *)pMsg);
 928     }
 929 }
 930
 931 /*
 932  * Keep trying to process messages until WM_QUIT
 933  * received.
 934  *
 935  * If there are messages to be processed, they will all be
 936  * processed and OnIdle will not be called.
 937  * When there are no more messages, OnIdle is called.
 938  * If OnIdle requests more time,
 939  * it will be repeatedly called so long as there are no pending messages.
 940  * A 'feature' of this is that once OnIdle has decided that no more processing
 941  * is required, then it won't get processing time until further messages
 942  * are processed (it'll sit in DoMessage).
 943  */
 944
 945 int wxApp::MainLoop()
 946 {
 947     m_keepGoing = TRUE;
 948
 949     while ( m_keepGoing )
 950     {
 951 #if wxUSE_THREADS
 952         wxMutexGuiLeaveOrEnter();
 953 #endif // wxUSE_THREADS
 954
 955         while ( !Pending() && ProcessIdle() )
 956             ;
 957
 958         // a message came or no more idle processing to do
 959         DoMessage();
 960     }
 961
 962     return s_currentMsg.wParam;
 963 }
 964
 965 // Returns TRUE if more time is needed.
 966 bool wxApp::ProcessIdle()
 967 {
 968     wxIdleEvent event;
 969     event.SetEventObject(this);
 970     ProcessEvent(event);
 971
 972     return event.MoreRequested();
 973 }
 974
 975 void wxApp::ExitMainLoop()
 976 {
 977     // this will set m_keepGoing to FALSE a bit later
 978     ::PostQuitMessage(0);
 979 }
 980
 981 bool wxApp::Pending()
 982 {
 983     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
 984 }
 985
 986 void wxApp::Dispatch()
 987 {
 988     DoMessage();
 989 }
 990
 991 /*
 992  * Give all windows a chance to preprocess
 993  * the message. Some may have accelerator tables, or have
 994  * MDI complications.
 995  */
 996
 997 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 998 {
 999     MSG *msg = (MSG *)wxmsg;
1000     HWND hwnd = msg->hwnd;
1001     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
1002
1003     // this may happen if the event occured in a standard modeless dialog (the
1004     // only example of which I know of is the find/replace dialog) - then call
1005     // IsDialogMessage() to make TAB navigation in it work
1006     if ( !wndThis )
1007     {
1008         // we need to find the dialog containing this control as
1009         // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
1010         // them) if we call it for the control itself
1011         while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
1012         {
1013             hwnd = ::GetParent(hwnd);
1014         }
1015
1016         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
1017     }
1018
1019 #if wxUSE_TOOLTIPS
1020     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1021     // popup the tooltip bubbles
1022     if ( (msg->message == WM_MOUSEMOVE) )
1023     {
1024         wxToolTip *tt = wndThis->GetToolTip();
1025         if ( tt )
1026         {
1027             tt->RelayEvent(wxmsg);
1028         }
1029     }
1030 #endif // wxUSE_TOOLTIPS
1031
1032     // allow the window to prevent certain messages from being
1033     // translated/processed (this is currently used by wxTextCtrl to always
1034     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
1035     if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
1036     {
1037         return FALSE;
1038     }
1039
1040     // try translations first: the accelerators override everything
1041     wxWindow *wnd;
1042
1043     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1044     {
1045         if ( wnd->MSWTranslateMessage(wxmsg))
1046             return TRUE;
1047
1048         // stop at first top level window, i.e. don't try to process the key
1049         // strokes originating in a dialog using the accelerators of the parent
1050         // frame - this doesn't make much sense
1051         if ( wnd->IsTopLevel() )
1052             break;
1053     }
1054
1055     // now try the other hooks (kbd navigation is handled here): we start from
1056     // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
1057     // called above
1058     for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
1059     {
1060         if ( wnd->MSWProcessMessage(wxmsg) )
1061             return TRUE;
1062     }
1063
1064     // no special preprocessing for this message, dispatch it normally
1065     return FALSE;
1066 }
1067
1068 void wxApp::OnIdle(wxIdleEvent& event)
1069 {
1070     static bool s_inOnIdle = FALSE;
1071
1072     // Avoid recursion (via ProcessEvent default case)
1073     if ( s_inOnIdle )
1074         return;
1075
1076     s_inOnIdle = TRUE;
1077
1078     // If there are pending events, we must process them: pending events
1079     // are either events to the threads other than main or events posted
1080     // with wxPostEvent() functions
1081     // GRG: I have moved this here so that all pending events are processed
1082     //   before starting to delete any objects. This behaves better (in
1083     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1084     //   behaviour. Changed Feb/2000 before 2.1.14
1085     ProcessPendingEvents();
1086
1087     // 'Garbage' collection of windows deleted with Close().
1088     DeletePendingObjects();
1089
1090 #if wxUSE_LOG
1091     // flush the logged messages if any
1092     wxLog::FlushActive();
1093 #endif // wxUSE_LOG
1094
1095 #if wxUSE_DC_CACHEING
1096     // automated DC cache management: clear the cached DCs and bitmap
1097     // if it's likely that the app has finished with them, that is, we
1098     // get an idle event and we're not dragging anything.
1099     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
1100         wxDC::ClearCache();
1101 #endif // wxUSE_DC_CACHEING
1102
1103     // Send OnIdle events to all windows
1104     if ( SendIdleEvents() )
1105     {
1106         // SendIdleEvents() returns TRUE if at least one window requested more
1107         // idle events
1108         event.RequestMore(TRUE);
1109     }
1110
1111     s_inOnIdle = FALSE;
1112 }
1113
1114 // Send idle event to all top-level windows
1115 bool wxApp::SendIdleEvents()
1116 {
1117     bool needMore = FALSE;
1118
1119     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1120     while (node)
1121     {
1122         wxWindow* win = node->GetData();
1123         if (SendIdleEvents(win))
1124             needMore = TRUE;
1125         node = node->GetNext();
1126     }
1127
1128     return needMore;
1129 }
1130
1131 // Send idle event to window and all subwindows
1132 bool wxApp::SendIdleEvents(wxWindow* win)
1133 {
1134     bool needMore = FALSE;
1135
1136     wxIdleEvent event;
1137     event.SetEventObject(win);
1138     win->GetEventHandler()->ProcessEvent(event);
1139
1140     if (event.MoreRequested())
1141         needMore = TRUE;
1142
1143     wxNode* node = win->GetChildren().First();
1144     while (node)
1145     {
1146         wxWindow* win = (wxWindow*) node->Data();
1147         if (SendIdleEvents(win))
1148             needMore = TRUE;
1149
1150         node = node->Next();
1151     }
1152     return needMore;
1153 }
1154
1155 void wxApp::DeletePendingObjects()
1156 {
1157     wxNode *node = wxPendingDelete.First();
1158     while (node)
1159     {
1160         wxObject *obj = (wxObject *)node->Data();
1161
1162         delete obj;
1163
1164         if (wxPendingDelete.Member(obj))
1165             delete node;
1166
1167         // Deleting one object may have deleted other pending
1168         // objects, so start from beginning of list again.
1169         node = wxPendingDelete.First();
1170     }
1171 }
1172
1173 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1174 {
1175     if (GetTopWindow())
1176         GetTopWindow()->Close(TRUE);
1177 }
1178
1179 // Default behaviour: close the application with prompts. The
1180 // user can veto the close, and therefore the end session.
1181 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1182 {
1183     if (GetTopWindow())
1184     {
1185         if (!GetTopWindow()->Close(!event.CanVeto()))
1186             event.Veto(TRUE);
1187     }
1188 }
1189
1190 /* static */
1191 int wxApp::GetComCtl32Version()
1192 {
1193 #ifdef __WXMICROWIN__
1194     return 0;
1195 #else
1196     // cache the result
1197     static int s_verComCtl32 = -1;
1198
1199     wxCRIT_SECT_DECLARE(csComCtl32);
1200     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1201
1202     if ( s_verComCtl32 == -1 )
1203     {
1204         // initally assume no comctl32.dll at all
1205         s_verComCtl32 = 0;
1206
1207         // do we have it?
1208         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1209
1210         // if so, then we can check for the version
1211         if ( hModuleComCtl32 )
1212         {
1213             // try to use DllGetVersion() if available in _headers_
1214             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1215                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1216                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1217                 if ( pfnDllGetVersion )
1218                 {
1219                     DLLVERSIONINFO dvi;
1220                     dvi.cbSize = sizeof(dvi);
1221
1222                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1223                     if ( FAILED(hr) )
1224                     {
1225                         wxLogApiError(_T("DllGetVersion"), hr);
1226                     }
1227                     else
1228                     {
1229                         // this is incompatible with _WIN32_IE values, but
1230                         // compatible with the other values returned by
1231                         // GetComCtl32Version()
1232                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1233                                             dvi.dwMinorVersion;
1234                     }
1235                 }
1236             #endif
1237                 // DllGetVersion() unavailable either during compile or
1238                 // run-time, try to guess the version otherwise
1239                 if ( !s_verComCtl32 )
1240                 {
1241                     // InitCommonControlsEx is unique to 4.70 and later
1242                     FARPROC theProc = ::GetProcAddress
1243                                         (
1244                                          hModuleComCtl32,
1245                                          "InitCommonControlsEx"
1246                                         );
1247
1248                     if ( !theProc )
1249                     {
1250                         // not found, must be 4.00
1251                         s_verComCtl32 = 400;
1252                     }
1253                     else
1254                     {
1255                         // many symbols appeared in comctl32 4.71, could use
1256                         // any of them except may be DllInstall
1257                         theProc = ::GetProcAddress
1258                                     (
1259                                      hModuleComCtl32,
1260                                      "InitializeFlatSB"
1261                                     );
1262                         if ( !theProc )
1263                         {
1264                             // not found, must be 4.70
1265                             s_verComCtl32 = 470;
1266                         }
1267                         else
1268                         {
1269                             // found, must be 4.71
1270                             s_verComCtl32 = 471;
1271                         }
1272                     }
1273                 }
1274         }
1275     }
1276
1277     return s_verComCtl32;
1278 #endif
1279 }
1280
1281 void wxExit()
1282 {
1283     wxLogError(_("Fatal error: exiting"));
1284
1285     wxApp::CleanUp();
1286     exit(0);
1287 }
1288
1289 // Yield to incoming messages
1290
1291 bool wxApp::Yield(bool onlyIfNeeded)
1292 {
1293     // MT-FIXME
1294     static bool s_inYield = FALSE;
1295
1296     // disable log flushing from here because a call to wxYield() shouldn't
1297     // normally result in message boxes popping up &c
1298     wxLog::Suspend();
1299
1300     if ( s_inYield )
1301     {
1302         if ( !onlyIfNeeded )
1303         {
1304             wxFAIL_MSG( wxT("wxYield called recursively" ) );
1305         }
1306
1307         return FALSE;
1308     }
1309
1310     s_inYield = TRUE;
1311
1312     // we don't want to process WM_QUIT from here - it should be processed in
1313     // the main event loop in order to stop it
1314     MSG msg;
1315     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1316             msg.message != WM_QUIT )
1317     {
1318 #if wxUSE_THREADS
1319         wxMutexGuiLeaveOrEnter();
1320 #endif // wxUSE_THREADS
1321
1322         if ( !wxTheApp->DoMessage() )
1323             break;
1324     }
1325
1326     // if there are pending events, we must process them.
1327     ProcessPendingEvents();
1328
1329     // let the logs be flashed again
1330     wxLog::Resume();
1331
1332     s_inYield = FALSE;
1333
1334     return TRUE;
1335 }
1336
1337 bool wxHandleFatalExceptions(bool doit)
1338 {
1339 #if wxUSE_ON_FATAL_EXCEPTION
1340     // assume this can only be called from the main thread
1341     gs_handleExceptions = doit;
1342
1343     return TRUE;
1344 #else
1345     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to use this function"));
1346
1347     (void)doit;
1348     return FALSE;
1349 #endif
1350 }
1351
1352 //-----------------------------------------------------------------------------
1353 // wxWakeUpIdle
1354 //-----------------------------------------------------------------------------
1355
1356 void wxWakeUpIdle()
1357 {
1358     // Send the top window a dummy message so idle handler processing will
1359     // start up again.  Doing it this way ensures that the idle handler
1360     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1361     // the same for the main app thread only)
1362     wxWindow *topWindow = wxTheApp->GetTopWindow();
1363     if ( topWindow )
1364     {
1365         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1366         {
1367             // should never happen
1368             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1369         }
1370     }
1371 }
1372
1373 //-----------------------------------------------------------------------------
1374
1375 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1376 // if in a separate file. So include it here to ensure it's linked.
1377 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1378 #include "main.cpp"
1379 #endif