src/msw/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "app.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/pen.h"
  37     #include "wx/brush.h"
  38     #include "wx/cursor.h"
  39     #include "wx/icon.h"
  40     #include "wx/palette.h"
  41     #include "wx/dc.h"
  42     #include "wx/dialog.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45     #include "wx/dynarray.h"
  46     #include "wx/wxchar.h"
  47     #include "wx/icon.h"
  48     #include "wx/log.h"
  49 #endif
  50
  51 #include "wx/cmdline.h"
  52 #include "wx/filename.h"
  53 #include "wx/module.h"
  54
  55 #include "wx/msw/private.h"
  56
  57 #if wxUSE_THREADS
  58     #include "wx/thread.h"
  59
  60     // define the array of MSG strutures
  61     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  62
  63     #include "wx/arrimpl.cpp"
  64
  65     WX_DEFINE_OBJARRAY(wxMsgArray);
  66 #endif // wxUSE_THREADS
  67
  68 #if wxUSE_WX_RESOURCES
  69     #include "wx/resource.h"
  70 #endif
  71
  72 #if wxUSE_TOOLTIPS
  73     #include "wx/tooltip.h"
  74 #endif // wxUSE_TOOLTIPS
  75
  76 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
  77 // compilers don't support it (missing headers, libs, ...)
  78 #if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__)
  79     #undef wxUSE_OLE
  80
  81     #define  wxUSE_OLE 0
  82 #endif // broken compilers
  83
  84 #if wxUSE_OLE
  85     #include <ole2.h>
  86 #endif
  87
  88 #include <string.h>
  89 #include <ctype.h>
  90
  91 #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__))
  92     #include <commctrl.h>
  93 #endif
  94
  95 #ifndef __WXMICROWIN__
  96 #include "wx/msw/msvcrt.h"
  97 #endif
  98
  99 // ----------------------------------------------------------------------------
 100 // conditional compilation
 101 // ----------------------------------------------------------------------------
 102
 103 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
 104 // defined before) and shows us what common control features are available
 105 // during the compile time (it doesn't mean that they will be available during
 106 // the run-time, use GetComCtl32Version() to test for them!). The possible
 107 // values are:
 108 //
 109 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 110 // 0x0300                      4.70              IE 3.x
 111 // 0x0400                      4.71              IE 4.0
 112 // 0x0401                      4.72              IE 4.01 and Win98
 113 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 114
 115 #ifndef _WIN32_IE
 116     // minimal set of features by default
 117     #define _WIN32_IE 0x0200
 118 #endif
 119
 120 #if _WIN32_IE >= 0x0300 && !defined(__MINGW32__)
 121     #include <shlwapi.h>
 122 #endif
 123
 124 // ---------------------------------------------------------------------------
 125 // global variables
 126 // ---------------------------------------------------------------------------
 127
 128 extern wxChar *wxBuffer;
 129 extern wxList WXDLLEXPORT wxPendingDelete;
 130 #ifndef __WXMICROWIN__
 131 extern void wxSetKeyboardHook(bool doIt);
 132 #endif
 133
 134 MSG s_currentMsg;
 135 wxApp *wxTheApp = NULL;
 136
 137 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 138 //     with NR suffix - wxWindow::MSWCreate() supposes this
 139 const wxChar *wxFrameClassName         = wxT("wxFrameClass");
 140 const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
 141 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 142 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 143 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 144 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 145 const wxChar *wxPanelClassName         = wxT("wxPanelClass");
 146 const wxChar *wxPanelClassNameNR       = wxT("wxPanelClassNR");
 147 const wxChar *wxCanvasClassName        = wxT("wxCanvasClass");
 148 const wxChar *wxCanvasClassNameNR      = wxT("wxCanvasClassNR");
 149
 150 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 151 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 152 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 153
 154 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 155 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 156 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 157
 158 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 159
 160 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 161
 162 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
 163 //       needs compiler support for Win32 SEH. Others (especially Borland)
 164 //       probably have it too, but I'm not sure about how it works
 165 // JACS: get 'Cannot use __try in functions that require unwinding
 166 // in Unicode mode, so disabling.
 167 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
 168     #undef wxUSE_ON_FATAL_EXCEPTION
 169     #define wxUSE_ON_FATAL_EXCEPTION 0
 170 #endif // VC++
 171
 172 #if wxUSE_ON_FATAL_EXCEPTION
 173     static bool gs_handleExceptions = FALSE;
 174 #endif
 175
 176 // ===========================================================================
 177 // implementation
 178 // ===========================================================================
 179
 180 // ---------------------------------------------------------------------------
 181 // wxApp
 182 // ---------------------------------------------------------------------------
 183
 184 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 185
 186 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 187     EVT_IDLE(wxApp::OnIdle)
 188     EVT_END_SESSION(wxApp::OnEndSession)
 189     EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 190 END_EVENT_TABLE()
 191
 192 //// Initialize
 193 bool wxApp::Initialize()
 194 {
 195     // the first thing to do is to check if we're trying to run an Unicode
 196     // program under Win9x w/o MSLU emulation layer - if so, abort right now
 197     // as it has no chance to work
 198 #if wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 199     if ( wxGetOsVersion() != wxWINDOWS_NT )
 200     {
 201         // note that we can use MessageBoxW() as it's implemented even under
 202         // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
 203         // used by wxLocale are not
 204         ::MessageBox
 205         (
 206          NULL,
 207          _T("This program uses Unicode and requires Windows NT/2000/XP.\nProgram aborted."),
 208          _T("wxWindows Fatal Error"),
 209          MB_ICONERROR | MB_OK
 210         );
 211
 212         return FALSE;
 213     }
 214 #endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 215
 216     // Some people may wish to use this, but
 217     // probably it shouldn't be here by default.
 218 #ifdef __WXDEBUG__
 219     //    wxRedirectIOToConsole();
 220 #endif
 221
 222     wxBuffer = new wxChar[1500]; // FIXME
 223
 224     wxClassInfo::InitializeClasses();
 225
 226 #if wxUSE_THREADS
 227     wxPendingEventsLocker = new wxCriticalSection;
 228 #endif
 229
 230     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 231     wxTheColourDatabase->Initialize();
 232
 233     wxInitializeStockLists();
 234     wxInitializeStockObjects();
 235
 236 #if wxUSE_WX_RESOURCES
 237     wxInitializeResourceSystem();
 238 #endif
 239
 240     wxBitmap::InitStandardHandlers();
 241
 242 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 243     InitCommonControls();
 244 #endif // __WIN95__
 245
 246 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 247
 248 #ifdef __WIN16__
 249     // for OLE, enlarge message queue to be as large as possible
 250     int iMsg = 96;
 251     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 252         ;
 253 #endif // Win16
 254
 255     // we need to initialize OLE library
 256     if ( FAILED(::OleInitialize(NULL)) )
 257         wxLogError(_("Cannot initialize OLE"));
 258
 259 #endif // wxUSE_OLE
 260
 261 #if wxUSE_CTL3D
 262     if (!Ctl3dRegister(wxhInstance))
 263         wxLogError(wxT("Cannot register CTL3D"));
 264
 265     Ctl3dAutoSubclass(wxhInstance);
 266 #endif // wxUSE_CTL3D
 267
 268     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 269 #if 0
 270     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 271     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 272     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 273
 274     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 275     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 276     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 277 #endif // 0
 278
 279     RegisterWindowClasses();
 280
 281 #ifndef __WXMICROWIN__
 282     // Create the brush for disabling bitmap buttons
 283
 284     LOGBRUSH lb;
 285     lb.lbStyle = BS_PATTERN;
 286     lb.lbColor = 0;
 287     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 288     if ( lb.lbHatch )
 289     {
 290         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 291         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 292     }
 293     //else: wxWindows resources are probably not linked in
 294 #endif
 295
 296 #if wxUSE_PENWINDOWS
 297     wxRegisterPenWin();
 298 #endif
 299
 300     wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
 301
 302     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 303     // PLEASE DO NOT ALTER THIS.
 304 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 305     extern char wxDummyChar;
 306     if (wxDummyChar) wxDummyChar++;
 307 #endif
 308
 309 #ifndef __WXMICROWIN__
 310     wxSetKeyboardHook(TRUE);
 311 #endif
 312
 313     wxModule::RegisterModules();
 314     if (!wxModule::InitializeModules())
 315         return FALSE;
 316     return TRUE;
 317 }
 318
 319 // ---------------------------------------------------------------------------
 320 // RegisterWindowClasses
 321 // ---------------------------------------------------------------------------
 322
 323 // TODO we should only register classes really used by the app. For this it
 324 //      would be enough to just delay the class registration until an attempt
 325 //      to create a window of this class is made.
 326 bool wxApp::RegisterWindowClasses()
 327 {
 328     WNDCLASS wndclass;
 329
 330     // for each class we register one with CS_(V|H)REDRAW style and one
 331     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 332     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 333     static const long styleNoRedraw = CS_DBLCLKS;
 334
 335     // the fields which are common to all classes
 336     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 337     wndclass.cbClsExtra    = 0;
 338     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 339     wndclass.hInstance     = wxhInstance;
 340     wndclass.hIcon         = (HICON) NULL;
 341     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 342     wndclass.lpszMenuName  = NULL;
 343
 344     // Register the frame window class.
 345     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 346     wndclass.lpszClassName = wxFrameClassName;
 347     wndclass.style         = styleNormal;
 348
 349     if ( !RegisterClass(&wndclass) )
 350     {
 351         wxLogLastError(wxT("RegisterClass(frame)"));
 352
 353         return FALSE;
 354     }
 355
 356     // "no redraw" frame
 357     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 358     wndclass.style         = styleNoRedraw;
 359
 360     if ( !RegisterClass(&wndclass) )
 361     {
 362         wxLogLastError(wxT("RegisterClass(no redraw frame)"));
 363
 364         return FALSE;
 365     }
 366
 367     // Register the MDI frame window class.
 368     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 369     wndclass.lpszClassName = wxMDIFrameClassName;
 370     wndclass.style         = styleNormal;
 371
 372     if ( !RegisterClass(&wndclass) )
 373     {
 374         wxLogLastError(wxT("RegisterClass(MDI parent)"));
 375
 376         return FALSE;
 377     }
 378
 379     // "no redraw" MDI frame
 380     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 381     wndclass.style         = styleNoRedraw;
 382
 383     if ( !RegisterClass(&wndclass) )
 384     {
 385         wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
 386
 387         return FALSE;
 388     }
 389
 390     // Register the MDI child frame window class.
 391     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 392     wndclass.lpszClassName = wxMDIChildFrameClassName;
 393     wndclass.style         = styleNormal;
 394
 395     if ( !RegisterClass(&wndclass) )
 396     {
 397         wxLogLastError(wxT("RegisterClass(MDI child)"));
 398
 399         return FALSE;
 400     }
 401
 402     // "no redraw" MDI child frame
 403     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 404     wndclass.style         = styleNoRedraw;
 405
 406     if ( !RegisterClass(&wndclass) )
 407     {
 408         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
 409
 410         return FALSE;
 411     }
 412
 413     // Register the panel window class.
 414     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 415     wndclass.lpszClassName = wxPanelClassName;
 416     wndclass.style         = styleNormal;
 417
 418     if ( !RegisterClass(&wndclass) )
 419     {
 420         wxLogLastError(wxT("RegisterClass(panel)"));
 421
 422         return FALSE;
 423     }
 424
 425     // Register the no redraw panel window class.
 426     wndclass.lpszClassName = wxPanelClassNameNR;
 427     wndclass.style         = styleNoRedraw;
 428
 429     if ( !RegisterClass(&wndclass) )
 430     {
 431         wxLogLastError(wxT("RegisterClass(no redraw panel)"));
 432
 433         return FALSE;
 434     }
 435
 436     // Register the canvas and textsubwindow class name
 437     wndclass.hbrBackground = (HBRUSH)NULL;
 438     wndclass.lpszClassName = wxCanvasClassName;
 439
 440     if ( !RegisterClass(&wndclass) )
 441     {
 442         wxLogLastError(wxT("RegisterClass(canvas)"));
 443
 444         return FALSE;
 445     }
 446
 447     wndclass.lpszClassName = wxCanvasClassNameNR;
 448     wndclass.style         = styleNoRedraw;
 449     if ( !RegisterClass(&wndclass) )
 450     {
 451         wxLogLastError(wxT("RegisterClass(no redraw canvas)"));
 452
 453         return FALSE;
 454     }
 455
 456     return TRUE;
 457 }
 458
 459 // ---------------------------------------------------------------------------
 460 // UnregisterWindowClasses
 461 // ---------------------------------------------------------------------------
 462
 463 bool wxApp::UnregisterWindowClasses()
 464 {
 465     bool retval = TRUE;
 466
 467 #ifndef __WXMICROWIN__
 468     // frame window class.
 469     if ( !UnregisterClass(wxFrameClassName, wxhInstance) )
 470     {
 471         wxLogLastError(wxT("UnregisterClass(frame)"));
 472
 473         retval = FALSE;
 474     }
 475
 476     // "no redraw" frame
 477     if ( !UnregisterClass(wxFrameClassNameNoRedraw, wxhInstance) )
 478     {
 479         wxLogLastError(wxT("UnregisterClass(no redraw frame)"));
 480
 481         return FALSE;
 482     }
 483
 484     // MDI frame window class.
 485     if ( !UnregisterClass(wxMDIFrameClassName, wxhInstance) )
 486     {
 487         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 488
 489         retval = FALSE;
 490     }
 491
 492     // "no redraw" MDI frame
 493     if ( !UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
 494     {
 495         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 496
 497         retval = FALSE;
 498     }
 499
 500     // MDI child frame window class.
 501     if ( !UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
 502     {
 503         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 504
 505         retval = FALSE;
 506     }
 507
 508     // "no redraw" MDI child frame
 509     if ( !UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
 510     {
 511         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 512
 513         retval = FALSE;
 514     }
 515
 516     // panel window class.
 517     if ( !UnregisterClass(wxPanelClassName, wxhInstance) )
 518     {
 519         wxLogLastError(wxT("UnregisterClass(panel)"));
 520
 521         retval = FALSE;
 522     }
 523
 524     // no redraw panel window class.
 525     if ( !UnregisterClass(wxPanelClassNameNR, wxhInstance) )
 526     {
 527         wxLogLastError(wxT("UnregisterClass(no redraw panel)"));
 528
 529         retval = FALSE;
 530     }
 531
 532     // canvas and textsubwindow class name
 533     if ( !UnregisterClass(wxCanvasClassName, wxhInstance) )
 534     {
 535         wxLogLastError(wxT("UnregisterClass(canvas)"));
 536
 537         retval = FALSE;
 538     }
 539
 540     if ( !UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
 541     {
 542         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 543
 544         retval = FALSE;
 545     }
 546 #endif
 547     // __WXMICROWIN__
 548     return retval;
 549 }
 550
 551 // ---------------------------------------------------------------------------
 552 // Convert Windows to argc, argv style
 553 // ---------------------------------------------------------------------------
 554
 555 void wxApp::ConvertToStandardCommandArgs(const char* lpCmdLine)
 556 {
 557     // break the command line in words
 558     wxArrayString args =
 559         wxCmdLineParser::ConvertStringToArgs(wxConvertMB2WX(lpCmdLine));
 560
 561     // +1 here for the program name
 562     argc = args.GetCount() + 1;
 563
 564     // and +1 here for the terminating NULL
 565     argv = new wxChar *[argc + 1];
 566
 567     argv[0] = new wxChar[260]; // 260 is MAX_PATH value from windef.h
 568     ::GetModuleFileName(wxhInstance, argv[0], 260);
 569
 570     // also set the app name from argv[0]
 571     wxString name;
 572     wxFileName::SplitPath(argv[0], NULL, &name, NULL);
 573
 574     SetAppName(name);
 575
 576     // copy all the other arguments to wxApp::argv[]
 577     for ( int i = 1; i < argc; i++ )
 578     {
 579         argv[i] = copystring(args[i - 1]);
 580     }
 581
 582     // argv[] must be NULL-terminated
 583     argv[argc] = NULL;
 584 }
 585
 586 //// Cleans up any wxWindows internal structures left lying around
 587
 588 void wxApp::CleanUp()
 589 {
 590     //// COMMON CLEANUP
 591
 592 #if wxUSE_LOG
 593     // flush the logged messages if any and install a 'safer' log target: the
 594     // default one (wxLogGui) can't be used after the resources are freed just
 595     // below and the user suppliedo ne might be even more unsafe (using any
 596     // wxWindows GUI function is unsafe starting from now)
 597     wxLog::DontCreateOnDemand();
 598
 599     // this will flush the old messages if any
 600     delete wxLog::SetActiveTarget(new wxLogStderr);
 601 #endif // wxUSE_LOG
 602
 603     // One last chance for pending objects to be cleaned up
 604     wxTheApp->DeletePendingObjects();
 605
 606     wxModule::CleanUpModules();
 607
 608 #if wxUSE_WX_RESOURCES
 609     wxCleanUpResourceSystem();
 610
 611     //  wxDefaultResourceTable->ClearTable();
 612 #endif
 613
 614     wxDeleteStockObjects();
 615
 616     // Destroy all GDI lists, etc.
 617     wxDeleteStockLists();
 618
 619     delete wxTheColourDatabase;
 620     wxTheColourDatabase = NULL;
 621
 622     wxBitmap::CleanUpHandlers();
 623
 624     delete[] wxBuffer;
 625     wxBuffer = NULL;
 626
 627     //// WINDOWS-SPECIFIC CLEANUP
 628
 629 #ifndef __WXMICROWIN__
 630     wxSetKeyboardHook(FALSE);
 631 #endif
 632
 633 #if wxUSE_PENWINDOWS
 634     wxCleanUpPenWin();
 635 #endif
 636
 637     if (wxSTD_FRAME_ICON)
 638         DestroyIcon(wxSTD_FRAME_ICON);
 639     if (wxSTD_MDICHILDFRAME_ICON)
 640         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 641     if (wxSTD_MDIPARENTFRAME_ICON)
 642         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 643
 644     if (wxDEFAULT_FRAME_ICON)
 645         DestroyIcon(wxDEFAULT_FRAME_ICON);
 646     if (wxDEFAULT_MDICHILDFRAME_ICON)
 647         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 648     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 649         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 650
 651     if ( wxDisableButtonBrush )
 652         ::DeleteObject( wxDisableButtonBrush );
 653
 654 #if wxUSE_OLE
 655     ::OleUninitialize();
 656 #endif
 657
 658 #ifdef WXMAKINGDLL
 659     // for an EXE the classes are unregistered when it terminates but DLL may
 660     // be loaded several times (load/unload/load) into the same process in
 661     // which case the registration will fail after the first time if we don't
 662     // unregister the classes now
 663     UnregisterWindowClasses();
 664 #endif // WXMAKINGDLL
 665
 666 #if wxUSE_CTL3D
 667     Ctl3dUnregister(wxhInstance);
 668 #endif
 669
 670     delete wxWinHandleHash;
 671
 672     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 673     // create a module for that as it's part of the core.
 674     delete wxPendingEvents;
 675
 676 #if wxUSE_THREADS
 677     delete wxPendingEventsLocker;
 678     // If we don't do the following, we get an apparent memory leak
 679 #if wxUSE_VALIDATORS
 680     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 681 #endif // wxUSE_VALIDATORS
 682 #endif // wxUSE_THREADS
 683
 684     wxClassInfo::CleanUpClasses();
 685
 686     delete wxTheApp;
 687     wxTheApp = NULL;
 688
 689 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 690     // At this point we want to check if there are any memory
 691     // blocks that aren't part of the wxDebugContext itself,
 692     // as a special case. Then when dumping we need to ignore
 693     // wxDebugContext, too.
 694     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 695     {
 696         wxLogMessage(wxT("There were memory leaks."));
 697         wxDebugContext::Dump();
 698         wxDebugContext::PrintStatistics();
 699     }
 700     //  wxDebugContext::SetStream(NULL, NULL);
 701 #endif
 702
 703 #if wxUSE_LOG
 704     // do it as the very last thing because everything else can log messages
 705     delete wxLog::SetActiveTarget(NULL);
 706 #endif // wxUSE_LOG
 707 }
 708
 709 //----------------------------------------------------------------------
 710 // Entry point helpers, used by wxPython
 711 //----------------------------------------------------------------------
 712
 713 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 714 {
 715     return wxApp::Initialize();
 716 }
 717
 718 int WXDLLEXPORT wxEntryInitGui()
 719 {
 720     return wxTheApp->OnInitGui();
 721 }
 722
 723 void WXDLLEXPORT wxEntryCleanup()
 724 {
 725     wxApp::CleanUp();
 726 }
 727
 728
 729 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 730
 731 // temporarily disable this warning which would be generated in release builds
 732 // because of __try
 733 #ifdef __VISUALC__
 734     #pragma warning(disable: 4715) // not all control paths return a value
 735 #endif // Visual C++
 736
 737 //----------------------------------------------------------------------
 738 // Main wxWindows entry point
 739 //----------------------------------------------------------------------
 740 int wxEntry(WXHINSTANCE hInstance,
 741             WXHINSTANCE WXUNUSED(hPrevInstance),
 742             char *lpCmdLine,
 743             int nCmdShow,
 744             bool enterLoop)
 745 {
 746     // do check for memory leaks on program exit
 747     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 748     //  deallocated memory which may be used to simulate low-memory condition)
 749 #ifndef __WXMICROWIN__
 750     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 751 #endif
 752
 753 #ifdef __MWERKS__
 754 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 755     // This seems to be necessary since there are 'rogue'
 756     // objects present at this point (perhaps global objects?)
 757     // Setting a checkpoint will ignore them as far as the
 758     // memory checking facility is concerned.
 759     // Of course you may argue that memory allocated in globals should be
 760     // checked, but this is a reasonable compromise.
 761     wxDebugContext::SetCheckpoint();
 762 #endif
 763 #endif
 764
 765     // take everything into a try-except block to be able to call
 766     // OnFatalException() if necessary
 767 #if wxUSE_ON_FATAL_EXCEPTION
 768     __try {
 769 #endif
 770         wxhInstance = (HINSTANCE) hInstance;
 771
 772         if (!wxEntryStart(0,0))
 773             return 0;
 774
 775         // create the application object or ensure that one already exists
 776         if (!wxTheApp)
 777         {
 778             // The app may have declared a global application object, but we recommend
 779             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 780             // function for delayed, dynamic app object construction.
 781             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 782                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 783
 784             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 785         }
 786
 787         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 788
 789         // save the WinMain() parameters
 790         if (lpCmdLine) // MicroWindows passes NULL
 791             wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 792         wxTheApp->m_nCmdShow = nCmdShow;
 793
 794         // We really don't want timestamps by default, because it means
 795         // we can't simply double-click on the error message and get to that
 796         // line in the source. So VC++ at least, let's have a sensible default.
 797 #ifdef __VISUALC__
 798         wxLog::SetTimestamp(NULL);
 799 #endif
 800
 801         int retValue = 0;
 802
 803         // it is common to create a modal dialog in OnInit() (to ask/notify the
 804         // user about something) but it wouldn't work if we don't change the
 805         // "exit on delete last frame" flag here as when this dialog is
 806         // deleted, the app would terminate (it was the last top level window
 807         // as the main frame wasn't created yet!), so disable this behaviour
 808         // temproarily
 809         bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
 810         wxTheApp->SetExitOnFrameDelete(FALSE);
 811
 812         // init the app
 813         retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 814
 815         // restore the old flag value
 816         wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
 817
 818         if ( retValue == 0 )
 819         {
 820             if ( enterLoop )
 821             {
 822                 // run the main loop
 823                 retValue = wxTheApp->OnRun();
 824             }
 825             else
 826             {
 827                 // we want to initialize, but not run or exit immediately.
 828                 return 1;
 829             }
 830         }
 831         //else: app initialization failed, so we skipped OnRun()
 832
 833         wxWindow *topWindow = wxTheApp->GetTopWindow();
 834         if ( topWindow )
 835         {
 836             // Forcibly delete the window.
 837             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 838                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 839             {
 840                 topWindow->Close(TRUE);
 841                 wxTheApp->DeletePendingObjects();
 842             }
 843             else
 844             {
 845                 delete topWindow;
 846                 wxTheApp->SetTopWindow(NULL);
 847             }
 848         }
 849
 850         wxTheApp->OnExit();
 851
 852         wxEntryCleanup();
 853
 854         return retValue;
 855
 856 #if wxUSE_ON_FATAL_EXCEPTION
 857     }
 858     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 859                                    : EXCEPTION_CONTINUE_SEARCH ) {
 860         if ( wxTheApp )
 861         {
 862            // give the user a chance to do something special about this
 863            wxTheApp->OnFatalException();
 864         }
 865
 866         ::ExitProcess(3); // the same exit code as abort()
 867
 868         // NOTREACHED
 869     }
 870 #endif // wxUSE_ON_FATAL_EXCEPTION
 871 }
 872
 873 // restore warning state
 874 #ifdef __VISUALC__
 875     #pragma warning(default: 4715) // not all control paths return a value
 876 #endif // Visual C++
 877
 878 #else /*  _WINDLL  */
 879
 880 //----------------------------------------------------------------------
 881 // Entry point for wxWindows + the App in a DLL
 882 //----------------------------------------------------------------------
 883
 884 int wxEntry(WXHINSTANCE hInstance)
 885 {
 886     wxhInstance = (HINSTANCE) hInstance;
 887     wxEntryStart(0, 0);
 888
 889     // The app may have declared a global application object, but we recommend
 890     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 891     // for delayed, dynamic app object construction.
 892     if (!wxTheApp)
 893     {
 894         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 895                      "No initializer - use IMPLEMENT_APP macro." );
 896
 897         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 898     }
 899
 900     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 901
 902     wxTheApp->argc = 0;
 903     wxTheApp->argv = NULL;
 904
 905     wxEntryInitGui();
 906
 907     wxTheApp->OnInit();
 908
 909     wxWindow *topWindow = wxTheApp->GetTopWindow();
 910     if ( topWindow && topWindow->GetHWND())
 911     {
 912         topWindow->Show(TRUE);
 913     }
 914
 915     return 1;
 916 }
 917 #endif // _WINDLL
 918
 919 //// Static member initialization
 920
 921 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 922
 923 wxApp::wxApp()
 924 {
 925     argc = 0;
 926     argv = NULL;
 927     m_printMode = wxPRINT_WINDOWS;
 928     m_auto3D = TRUE;
 929 }
 930
 931 wxApp::~wxApp()
 932 {
 933     // Delete command-line args
 934     int i;
 935     for (i = 0; i < argc; i++)
 936     {
 937         delete[] argv[i];
 938     }
 939     delete[] argv;
 940 }
 941
 942 bool wxApp::Initialized()
 943 {
 944 #ifndef _WINDLL
 945     if (GetTopWindow())
 946         return TRUE;
 947     else
 948         return FALSE;
 949 #else // Assume initialized if DLL (no way of telling)
 950     return TRUE;
 951 #endif
 952 }
 953
 954 /*
 955  * Get and process a message, returning FALSE if WM_QUIT
 956  * received (and also set the flag telling the app to exit the main loop)
 957  *
 958  */
 959 bool wxApp::DoMessage()
 960 {
 961     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 962     if ( rc == 0 )
 963     {
 964         // got WM_QUIT
 965         m_keepGoing = FALSE;
 966
 967         return FALSE;
 968     }
 969     else if ( rc == -1 )
 970     {
 971         // should never happen, but let's test for it nevertheless
 972         wxLogLastError(wxT("GetMessage"));
 973     }
 974     else
 975     {
 976 #if wxUSE_THREADS
 977         wxASSERT_MSG( wxThread::IsMain(),
 978                       wxT("only the main thread can process Windows messages") );
 979
 980         static bool s_hadGuiLock = TRUE;
 981         static wxMsgArray s_aSavedMessages;
 982
 983         // if a secondary thread owns is doing GUI calls, save all messages for
 984         // later processing - we can't process them right now because it will
 985         // lead to recursive library calls (and we're not reentrant)
 986         if ( !wxGuiOwnedByMainThread() )
 987         {
 988             s_hadGuiLock = FALSE;
 989
 990             // leave out WM_COMMAND messages: too dangerous, sometimes
 991             // the message will be processed twice
 992             if ( !wxIsWaitingForThread() ||
 993                     s_currentMsg.message != WM_COMMAND )
 994             {
 995                 s_aSavedMessages.Add(s_currentMsg);
 996             }
 997
 998             return TRUE;
 999         }
1000         else
1001         {
1002             // have we just regained the GUI lock? if so, post all of the saved
1003             // messages
1004             //
1005             // FIXME of course, it's not _exactly_ the same as processing the
1006             //       messages normally - expect some things to break...
1007             if ( !s_hadGuiLock )
1008             {
1009                 s_hadGuiLock = TRUE;
1010
1011                 size_t count = s_aSavedMessages.Count();
1012                 for ( size_t n = 0; n < count; n++ )
1013                 {
1014                     MSG& msg = s_aSavedMessages[n];
1015
1016                     if ( !ProcessMessage((WXMSG *)&msg) )
1017                     {
1018                         ::TranslateMessage(&msg);
1019                         ::DispatchMessage(&msg);
1020                     }
1021                 }
1022
1023                 s_aSavedMessages.Empty();
1024             }
1025         }
1026 #endif // wxUSE_THREADS
1027
1028         // Process the message
1029         DoMessage((WXMSG *)&s_currentMsg);
1030     }
1031
1032     return TRUE;
1033 }
1034
1035 void wxApp::DoMessage(WXMSG *pMsg)
1036 {
1037     if ( !ProcessMessage(pMsg) )
1038     {
1039         ::TranslateMessage((MSG *)pMsg);
1040         ::DispatchMessage((MSG *)pMsg);
1041     }
1042 }
1043
1044 /*
1045  * Keep trying to process messages until WM_QUIT
1046  * received.
1047  *
1048  * If there are messages to be processed, they will all be
1049  * processed and OnIdle will not be called.
1050  * When there are no more messages, OnIdle is called.
1051  * If OnIdle requests more time,
1052  * it will be repeatedly called so long as there are no pending messages.
1053  * A 'feature' of this is that once OnIdle has decided that no more processing
1054  * is required, then it won't get processing time until further messages
1055  * are processed (it'll sit in DoMessage).
1056  */
1057
1058 int wxApp::MainLoop()
1059 {
1060     m_keepGoing = TRUE;
1061
1062     while ( m_keepGoing )
1063     {
1064 #if wxUSE_THREADS
1065         wxMutexGuiLeaveOrEnter();
1066 #endif // wxUSE_THREADS
1067
1068         while ( !Pending() && ProcessIdle() )
1069             ;
1070
1071         // a message came or no more idle processing to do
1072         DoMessage();
1073     }
1074
1075     return s_currentMsg.wParam;
1076 }
1077
1078 // Returns TRUE if more time is needed.
1079 bool wxApp::ProcessIdle()
1080 {
1081     wxIdleEvent event;
1082     event.SetEventObject(this);
1083     ProcessEvent(event);
1084
1085     return event.MoreRequested();
1086 }
1087
1088 void wxApp::ExitMainLoop()
1089 {
1090     // VZ: why not ::PostQuitMessage()?
1091     m_keepGoing = FALSE;
1092 }
1093
1094 bool wxApp::Pending()
1095 {
1096     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
1097 }
1098
1099 void wxApp::Dispatch()
1100 {
1101     DoMessage();
1102 }
1103
1104 /*
1105  * Give all windows a chance to preprocess
1106  * the message. Some may have accelerator tables, or have
1107  * MDI complications.
1108  */
1109
1110 bool wxApp::ProcessMessage(WXMSG *wxmsg)
1111 {
1112     MSG *msg = (MSG *)wxmsg;
1113     HWND hwnd = msg->hwnd;
1114     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
1115
1116     // this may happen if the event occured in a standard modeless dialog (the
1117     // only example of which I know of is the find/replace dialog) - then call
1118     // IsDialogMessage() to make TAB navigation in it work
1119     if ( !wndThis )
1120     {
1121         // we need to find the dialog containing this control as
1122         // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
1123         // them) if we call it for the control itself
1124         while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
1125         {
1126             hwnd = ::GetParent(hwnd);
1127         }
1128
1129         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
1130     }
1131
1132 #if wxUSE_TOOLTIPS
1133     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1134     // popup the tooltip bubbles
1135     if ( (msg->message == WM_MOUSEMOVE) )
1136     {
1137         wxToolTip *tt = wndThis->GetToolTip();
1138         if ( tt )
1139         {
1140             tt->RelayEvent(wxmsg);
1141         }
1142     }
1143 #endif // wxUSE_TOOLTIPS
1144
1145     // allow the window to prevent certain messages from being
1146     // translated/processed (this is currently used by wxTextCtrl to always
1147     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
1148     if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
1149     {
1150         return FALSE;
1151     }
1152
1153     // try translations first: the accelerators override everything
1154     wxWindow *wnd;
1155
1156     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1157     {
1158         if ( wnd->MSWTranslateMessage(wxmsg))
1159             return TRUE;
1160
1161         // stop at first top level window, i.e. don't try to process the key
1162         // strokes originating in a dialog using the accelerators of the parent
1163         // frame - this doesn't make much sense
1164         if ( wnd->IsTopLevel() )
1165             break;
1166     }
1167
1168     // now try the other hooks (kbd navigation is handled here): we start from
1169     // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
1170     // called above
1171     for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
1172     {
1173         if ( wnd->MSWProcessMessage(wxmsg) )
1174             return TRUE;
1175     }
1176
1177     // no special preprocessing for this message, dispatch it normally
1178     return FALSE;
1179 }
1180
1181 void wxApp::OnIdle(wxIdleEvent& event)
1182 {
1183     static bool s_inOnIdle = FALSE;
1184
1185     // Avoid recursion (via ProcessEvent default case)
1186     if ( s_inOnIdle )
1187         return;
1188
1189     s_inOnIdle = TRUE;
1190
1191     // If there are pending events, we must process them: pending events
1192     // are either events to the threads other than main or events posted
1193     // with wxPostEvent() functions
1194     // GRG: I have moved this here so that all pending events are processed
1195     //   before starting to delete any objects. This behaves better (in
1196     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1197     //   behaviour. Changed Feb/2000 before 2.1.14
1198     ProcessPendingEvents();
1199
1200     // 'Garbage' collection of windows deleted with Close().
1201     DeletePendingObjects();
1202
1203 #if wxUSE_LOG
1204     // flush the logged messages if any
1205     wxLog::FlushActive();
1206 #endif // wxUSE_LOG
1207
1208 #if wxUSE_DC_CACHEING
1209     // automated DC cache management: clear the cached DCs and bitmap
1210     // if it's likely that the app has finished with them, that is, we
1211     // get an idle event and we're not dragging anything.
1212     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
1213         wxDC::ClearCache();
1214 #endif // wxUSE_DC_CACHEING
1215
1216     // Send OnIdle events to all windows
1217     if ( SendIdleEvents() )
1218     {
1219         // SendIdleEvents() returns TRUE if at least one window requested more
1220         // idle events
1221         event.RequestMore(TRUE);
1222     }
1223
1224     s_inOnIdle = FALSE;
1225 }
1226
1227 // Send idle event to all top-level windows
1228 bool wxApp::SendIdleEvents()
1229 {
1230     bool needMore = FALSE;
1231
1232     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1233     while (node)
1234     {
1235         wxWindow* win = node->GetData();
1236         if (SendIdleEvents(win))
1237             needMore = TRUE;
1238         node = node->GetNext();
1239     }
1240
1241     return needMore;
1242 }
1243
1244 // Send idle event to window and all subwindows
1245 bool wxApp::SendIdleEvents(wxWindow* win)
1246 {
1247     bool needMore = FALSE;
1248
1249     wxIdleEvent event;
1250     event.SetEventObject(win);
1251     win->GetEventHandler()->ProcessEvent(event);
1252
1253     if (event.MoreRequested())
1254         needMore = TRUE;
1255
1256     wxNode* node = win->GetChildren().First();
1257     while (node)
1258     {
1259         wxWindow* win = (wxWindow*) node->Data();
1260         if (SendIdleEvents(win))
1261             needMore = TRUE;
1262
1263         node = node->Next();
1264     }
1265     return needMore;
1266 }
1267
1268 void wxApp::DeletePendingObjects()
1269 {
1270     wxNode *node = wxPendingDelete.First();
1271     while (node)
1272     {
1273         wxObject *obj = (wxObject *)node->Data();
1274
1275         delete obj;
1276
1277         if (wxPendingDelete.Member(obj))
1278             delete node;
1279
1280         // Deleting one object may have deleted other pending
1281         // objects, so start from beginning of list again.
1282         node = wxPendingDelete.First();
1283     }
1284 }
1285
1286 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1287 {
1288     if (GetTopWindow())
1289         GetTopWindow()->Close(TRUE);
1290 }
1291
1292 // Default behaviour: close the application with prompts. The
1293 // user can veto the close, and therefore the end session.
1294 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1295 {
1296     if (GetTopWindow())
1297     {
1298         if (!GetTopWindow()->Close(!event.CanVeto()))
1299             event.Veto(TRUE);
1300     }
1301 }
1302
1303 /* static */
1304 int wxApp::GetComCtl32Version()
1305 {
1306 #ifdef __WXMICROWIN__
1307     return 0;
1308 #else
1309     // cache the result
1310     static int s_verComCtl32 = -1;
1311
1312     wxCRIT_SECT_DECLARE(csComCtl32);
1313     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1314
1315     if ( s_verComCtl32 == -1 )
1316     {
1317         // initally assume no comctl32.dll at all
1318         s_verComCtl32 = 0;
1319
1320         // do we have it?
1321         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1322
1323         // if so, then we can check for the version
1324         if ( hModuleComCtl32 )
1325         {
1326             // try to use DllGetVersion() if available in _headers_
1327             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1328                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1329                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1330                 if ( pfnDllGetVersion )
1331                 {
1332                     DLLVERSIONINFO dvi;
1333                     dvi.cbSize = sizeof(dvi);
1334
1335                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1336                     if ( FAILED(hr) )
1337                     {
1338                         wxLogApiError(_T("DllGetVersion"), hr);
1339                     }
1340                     else
1341                     {
1342                         // this is incompatible with _WIN32_IE values, but
1343                         // compatible with the other values returned by
1344                         // GetComCtl32Version()
1345                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1346                                             dvi.dwMinorVersion;
1347                     }
1348                 }
1349             #endif
1350                 // DllGetVersion() unavailable either during compile or
1351                 // run-time, try to guess the version otherwise
1352                 if ( !s_verComCtl32 )
1353                 {
1354                     // InitCommonControlsEx is unique to 4.70 and later
1355                     FARPROC theProc = ::GetProcAddress
1356                                         (
1357                                          hModuleComCtl32,
1358                                          "InitCommonControlsEx"
1359                                         );
1360
1361                     if ( !theProc )
1362                     {
1363                         // not found, must be 4.00
1364                         s_verComCtl32 = 400;
1365                     }
1366                     else
1367                     {
1368                         // many symbols appeared in comctl32 4.71, could use
1369                         // any of them except may be DllInstall
1370                         theProc = ::GetProcAddress
1371                                     (
1372                                      hModuleComCtl32,
1373                                      "InitializeFlatSB"
1374                                     );
1375                         if ( !theProc )
1376                         {
1377                             // not found, must be 4.70
1378                             s_verComCtl32 = 470;
1379                         }
1380                         else
1381                         {
1382                             // found, must be 4.71
1383                             s_verComCtl32 = 471;
1384                         }
1385                     }
1386                 }
1387         }
1388     }
1389
1390     return s_verComCtl32;
1391 #endif
1392 }
1393
1394 void wxExit()
1395 {
1396     wxLogError(_("Fatal error: exiting"));
1397
1398     wxApp::CleanUp();
1399     exit(0);
1400 }
1401
1402 // Yield to incoming messages
1403
1404 bool wxApp::Yield(bool onlyIfNeeded)
1405 {
1406     // MT-FIXME
1407     static bool s_inYield = FALSE;
1408
1409     // disable log flushing from here because a call to wxYield() shouldn't
1410     // normally result in message boxes popping up &c
1411     wxLog::Suspend();
1412
1413     if ( s_inYield )
1414     {
1415         if ( !onlyIfNeeded )
1416         {
1417             wxFAIL_MSG( wxT("wxYield called recursively" ) );
1418         }
1419
1420         return FALSE;
1421     }
1422
1423     s_inYield = TRUE;
1424
1425     // we don't want to process WM_QUIT from here - it should be processed in
1426     // the main event loop in order to stop it
1427     MSG msg;
1428     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1429             msg.message != WM_QUIT )
1430     {
1431 #if wxUSE_THREADS
1432         wxMutexGuiLeaveOrEnter();
1433 #endif // wxUSE_THREADS
1434
1435         if ( !wxTheApp->DoMessage() )
1436             break;
1437     }
1438
1439     // if there are pending events, we must process them.
1440     ProcessPendingEvents();
1441
1442     // let the logs be flashed again
1443     wxLog::Resume();
1444
1445     s_inYield = FALSE;
1446
1447     return TRUE;
1448 }
1449
1450 bool wxHandleFatalExceptions(bool doit)
1451 {
1452 #if wxUSE_ON_FATAL_EXCEPTION
1453     // assume this can only be called from the main thread
1454     gs_handleExceptions = doit;
1455
1456     return TRUE;
1457 #else
1458     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to use this function"));
1459
1460     (void)doit;
1461     return FALSE;
1462 #endif
1463 }
1464
1465 //-----------------------------------------------------------------------------
1466 // wxWakeUpIdle
1467 //-----------------------------------------------------------------------------
1468
1469 void wxWakeUpIdle()
1470 {
1471     // Send the top window a dummy message so idle handler processing will
1472     // start up again.  Doing it this way ensures that the idle handler
1473     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1474     // the same for the main app thread only)
1475     wxWindow *topWindow = wxTheApp->GetTopWindow();
1476     if ( topWindow )
1477     {
1478         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1479         {
1480             // should never happen
1481             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1482         }
1483     }
1484 }
1485
1486 //-----------------------------------------------------------------------------
1487
1488 wxIcon
1489 wxApp::GetStdIcon(int which) const
1490 {
1491     switch(which)
1492     {
1493         case wxICON_INFORMATION:
1494             return wxIcon("wxICON_INFO");
1495
1496         case wxICON_QUESTION:
1497             return wxIcon("wxICON_QUESTION");
1498
1499         case wxICON_EXCLAMATION:
1500             return wxIcon("wxICON_WARNING");
1501
1502         default:
1503             wxFAIL_MSG(wxT("requested non existent standard icon"));
1504             // still fall through
1505
1506         case wxICON_HAND:
1507             return wxIcon("wxICON_ERROR");
1508     }
1509 }
1510
1511 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1512 // if in a separate file. So include it here to ensure it's linked.
1513 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1514 #include "main.cpp"
1515 #endif