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