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