src/msw/app.cpp

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