src/msw/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "app.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/pen.h"
  37     #include "wx/brush.h"
  38     #include "wx/cursor.h"
  39     #include "wx/icon.h"
  40     #include "wx/palette.h"
  41     #include "wx/dc.h"
  42     #include "wx/dialog.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45     #include "wx/dynarray.h"
  46     #include "wx/wxchar.h"
  47     #include "wx/icon.h"
  48     #include "wx/log.h"
  49 #endif
  50
  51 #include "wx/cmdline.h"
  52 #include "wx/filename.h"
  53 #include "wx/module.h"
  54
  55 #include "wx/msw/private.h"
  56
  57 #if wxUSE_THREADS
  58     #include "wx/thread.h"
  59
  60     // define the array of MSG strutures
  61     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  62
  63     #include "wx/arrimpl.cpp"
  64
  65     WX_DEFINE_OBJARRAY(wxMsgArray);
  66 #endif // wxUSE_THREADS
  67
  68 #if wxUSE_WX_RESOURCES
  69     #include "wx/resource.h"
  70 #endif
  71
  72 #if wxUSE_TOOLTIPS
  73     #include "wx/tooltip.h"
  74 #endif // wxUSE_TOOLTIPS
  75
  76 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
  77 // compilers don't support it (missing headers, libs, ...)
  78 #if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__)
  79     #undef wxUSE_OLE
  80
  81     #define  wxUSE_OLE 0
  82 #endif // broken compilers
  83
  84 #if wxUSE_OLE
  85     #include <ole2.h>
  86 #endif
  87
  88 #include <string.h>
  89 #include <ctype.h>
  90
  91 #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__))
  92     #include <commctrl.h>
  93 #endif
  94
  95 #ifndef __WXMICROWIN__
  96 #include "wx/msw/msvcrt.h"
  97 #endif
  98
  99 // ----------------------------------------------------------------------------
 100 // conditional compilation
 101 // ----------------------------------------------------------------------------
 102
 103 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
 104 // defined before) and shows us what common control features are available
 105 // during the compile time (it doesn't mean that they will be available during
 106 // the run-time, use GetComCtl32Version() to test for them!). The possible
 107 // values are:
 108 //
 109 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 110 // 0x0300                      4.70              IE 3.x
 111 // 0x0400                      4.71              IE 4.0
 112 // 0x0401                      4.72              IE 4.01 and Win98
 113 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 114
 115 #ifndef _WIN32_IE
 116     // minimal set of features by default
 117     #define _WIN32_IE 0x0200
 118 #endif
 119
 120 #if _WIN32_IE >= 0x0300 && !defined(__MINGW32__)
 121     #include <shlwapi.h>
 122 #endif
 123
 124 // ---------------------------------------------------------------------------
 125 // global variables
 126 // ---------------------------------------------------------------------------
 127
 128 extern wxChar *wxBuffer;
 129 extern wxList WXDLLEXPORT wxPendingDelete;
 130 #ifndef __WXMICROWIN__
 131 extern void wxSetKeyboardHook(bool doIt);
 132 #endif
 133
 134 MSG s_currentMsg;
 135 wxApp *wxTheApp = NULL;
 136
 137 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 138 //     with NR suffix - wxWindow::MSWCreate() supposes this
 139 const wxChar *wxFrameClassName         = wxT("wxFrameClass");
 140 const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
 141 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 142 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 143 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 144 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 145 const wxChar *wxPanelClassName         = wxT("wxPanelClass");
 146 const wxChar *wxPanelClassNameNR       = wxT("wxPanelClassNR");
 147 const wxChar *wxCanvasClassName        = wxT("wxCanvasClass");
 148 const wxChar *wxCanvasClassNameNR      = wxT("wxCanvasClassNR");
 149
 150 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 151 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 152 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 153
 154 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 155 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 156 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 157
 158 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 159
 160 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 161
 162 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
 163 //       needs compiler support for Win32 SEH. Others (especially Borland)
 164 //       probably have it too, but I'm not sure about how it works
 165 // JACS: get 'Cannot use __try in functions that require unwinding
 166 // in Unicode mode, so disabling.
 167 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
 168     #undef wxUSE_ON_FATAL_EXCEPTION
 169     #define wxUSE_ON_FATAL_EXCEPTION 0
 170 #endif // VC++
 171
 172 #if wxUSE_ON_FATAL_EXCEPTION
 173     static bool gs_handleExceptions = FALSE;
 174 #endif
 175
 176 // ===========================================================================
 177 // implementation
 178 // ===========================================================================
 179
 180 // ---------------------------------------------------------------------------
 181 // wxApp
 182 // ---------------------------------------------------------------------------
 183
 184 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 185
 186 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 187     EVT_IDLE(wxApp::OnIdle)
 188     EVT_END_SESSION(wxApp::OnEndSession)
 189     EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 190 END_EVENT_TABLE()
 191
 192 //// Initialize
 193 bool wxApp::Initialize()
 194 {
 195     // the first thing to do is to check if we're trying to run an Unicode
 196     // program under Win9x w/o MSLU emulation layer - if so, abort right now
 197     // as it has no chance to work
 198 #if wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 199     if ( wxGetOsVersion() != wxWINDOWS_NT )
 200     {
 201         // note that we can use MessageBoxW() as it's implemented even under
 202         // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
 203         // used by wxLocale are not
 204         ::MessageBox
 205         (
 206          NULL,
 207          _T("This program uses Unicode and requires Windows NT/2000/XP.\nProgram aborted."),
 208          _T("wxWindows Fatal Error"),
 209          MB_ICONERROR | MB_OK
 210         );
 211
 212         return FALSE;
 213     }
 214 #endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU
 215
 216     // Some people may wish to use this, but
 217     // probably it shouldn't be here by default.
 218 #ifdef __WXDEBUG__
 219     //    wxRedirectIOToConsole();
 220 #endif
 221
 222     wxBuffer = new wxChar[1500]; // FIXME
 223
 224     wxClassInfo::InitializeClasses();
 225
 226 #if wxUSE_THREADS
 227     wxPendingEventsLocker = new wxCriticalSection;
 228 #endif
 229
 230     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 231     wxTheColourDatabase->Initialize();
 232
 233     wxInitializeStockLists();
 234     wxInitializeStockObjects();
 235
 236 #if wxUSE_WX_RESOURCES
 237     wxInitializeResourceSystem();
 238 #endif
 239
 240     wxBitmap::InitStandardHandlers();
 241
 242 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 243     InitCommonControls();
 244 #endif // __WIN95__
 245
 246 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 247
 248 #ifdef __WIN16__
 249     // for OLE, enlarge message queue to be as large as possible
 250     int iMsg = 96;
 251     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 252         ;
 253 #endif // Win16
 254
 255 #if wxUSE_OLE
 256     // we need to initialize OLE library
 257     if ( FAILED(::OleInitialize(NULL)) )
 258         wxLogError(_("Cannot initialize OLE"));
 259 #endif
 260
 261 #endif // wxUSE_OLE
 262
 263 #if wxUSE_CTL3D
 264     if (!Ctl3dRegister(wxhInstance))
 265         wxLogError(wxT("Cannot register CTL3D"));
 266
 267     Ctl3dAutoSubclass(wxhInstance);
 268 #endif // wxUSE_CTL3D
 269
 270     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 271 #if 0
 272     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 273     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 274     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 275
 276     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 277     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 278     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 279 #endif // 0
 280
 281     RegisterWindowClasses();
 282
 283 #ifndef __WXMICROWIN__
 284     // Create the brush for disabling bitmap buttons
 285
 286     LOGBRUSH lb;
 287     lb.lbStyle = BS_PATTERN;
 288     lb.lbColor = 0;
 289     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 290     if ( lb.lbHatch )
 291     {
 292         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 293         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 294     }
 295     //else: wxWindows resources are probably not linked in
 296 #endif
 297
 298 #if wxUSE_PENWINDOWS
 299     wxRegisterPenWin();
 300 #endif
 301
 302     wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100);
 303
 304     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 305     // PLEASE DO NOT ALTER THIS.
 306 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 307     extern char wxDummyChar;
 308     if (wxDummyChar) wxDummyChar++;
 309 #endif
 310
 311 #ifndef __WXMICROWIN__
 312     wxSetKeyboardHook(TRUE);
 313 #endif
 314
 315     wxModule::RegisterModules();
 316     if (!wxModule::InitializeModules())
 317         return FALSE;
 318     return TRUE;
 319 }
 320
 321 // ---------------------------------------------------------------------------
 322 // RegisterWindowClasses
 323 // ---------------------------------------------------------------------------
 324
 325 // TODO we should only register classes really used by the app. For this it
 326 //      would be enough to just delay the class registration until an attempt
 327 //      to create a window of this class is made.
 328 bool wxApp::RegisterWindowClasses()
 329 {
 330     WNDCLASS wndclass;
 331
 332     // for each class we register one with CS_(V|H)REDRAW style and one
 333     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 334     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 335     static const long styleNoRedraw = CS_DBLCLKS;
 336
 337     // the fields which are common to all classes
 338     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 339     wndclass.cbClsExtra    = 0;
 340     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 341     wndclass.hInstance     = wxhInstance;
 342     wndclass.hIcon         = (HICON) NULL;
 343     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 344     wndclass.lpszMenuName  = NULL;
 345
 346     // Register the frame window class.
 347     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 348     wndclass.lpszClassName = wxFrameClassName;
 349     wndclass.style         = styleNormal;
 350
 351     if ( !RegisterClass(&wndclass) )
 352     {
 353         wxLogLastError(wxT("RegisterClass(frame)"));
 354
 355         return FALSE;
 356     }
 357
 358     // "no redraw" frame
 359     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 360     wndclass.style         = styleNoRedraw;
 361
 362     if ( !RegisterClass(&wndclass) )
 363     {
 364         wxLogLastError(wxT("RegisterClass(no redraw frame)"));
 365
 366         return FALSE;
 367     }
 368
 369     // Register the MDI frame window class.
 370     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 371     wndclass.lpszClassName = wxMDIFrameClassName;
 372     wndclass.style         = styleNormal;
 373
 374     if ( !RegisterClass(&wndclass) )
 375     {
 376         wxLogLastError(wxT("RegisterClass(MDI parent)"));
 377
 378         return FALSE;
 379     }
 380
 381     // "no redraw" MDI frame
 382     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 383     wndclass.style         = styleNoRedraw;
 384
 385     if ( !RegisterClass(&wndclass) )
 386     {
 387         wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
 388
 389         return FALSE;
 390     }
 391
 392     // Register the MDI child frame window class.
 393     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 394     wndclass.lpszClassName = wxMDIChildFrameClassName;
 395     wndclass.style         = styleNormal;
 396
 397     if ( !RegisterClass(&wndclass) )
 398     {
 399         wxLogLastError(wxT("RegisterClass(MDI child)"));
 400
 401         return FALSE;
 402     }
 403
 404     // "no redraw" MDI child frame
 405     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 406     wndclass.style         = styleNoRedraw;
 407
 408     if ( !RegisterClass(&wndclass) )
 409     {
 410         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
 411
 412         return FALSE;
 413     }
 414
 415     // Register the panel window class.
 416     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 417     wndclass.lpszClassName = wxPanelClassName;
 418     wndclass.style         = styleNormal;
 419
 420     if ( !RegisterClass(&wndclass) )
 421     {
 422         wxLogLastError(wxT("RegisterClass(panel)"));
 423
 424         return FALSE;
 425     }
 426
 427     // Register the no redraw panel window class.
 428     wndclass.lpszClassName = wxPanelClassNameNR;
 429     wndclass.style         = styleNoRedraw;
 430
 431     if ( !RegisterClass(&wndclass) )
 432     {
 433         wxLogLastError(wxT("RegisterClass(no redraw panel)"));
 434
 435         return FALSE;
 436     }
 437
 438     // Register the canvas and textsubwindow class name
 439     wndclass.hbrBackground = (HBRUSH)NULL;
 440     wndclass.lpszClassName = wxCanvasClassName;
 441
 442     if ( !RegisterClass(&wndclass) )
 443     {
 444         wxLogLastError(wxT("RegisterClass(canvas)"));
 445
 446         return FALSE;
 447     }
 448
 449     wndclass.lpszClassName = wxCanvasClassNameNR;
 450     wndclass.style         = styleNoRedraw;
 451     if ( !RegisterClass(&wndclass) )
 452     {
 453         wxLogLastError(wxT("RegisterClass(no redraw canvas)"));
 454
 455         return FALSE;
 456     }
 457
 458     return TRUE;
 459 }
 460
 461 // ---------------------------------------------------------------------------
 462 // UnregisterWindowClasses
 463 // ---------------------------------------------------------------------------
 464
 465 bool wxApp::UnregisterWindowClasses()
 466 {
 467     bool retval = TRUE;
 468
 469 #ifndef __WXMICROWIN__
 470     // frame window class.
 471     if ( !UnregisterClass(wxFrameClassName, wxhInstance) )
 472     {
 473         wxLogLastError(wxT("UnregisterClass(frame)"));
 474
 475         retval = FALSE;
 476     }
 477
 478     // "no redraw" frame
 479     if ( !UnregisterClass(wxFrameClassNameNoRedraw, wxhInstance) )
 480     {
 481         wxLogLastError(wxT("UnregisterClass(no redraw frame)"));
 482
 483         return FALSE;
 484     }
 485
 486     // MDI frame window class.
 487     if ( !UnregisterClass(wxMDIFrameClassName, wxhInstance) )
 488     {
 489         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 490
 491         retval = FALSE;
 492     }
 493
 494     // "no redraw" MDI frame
 495     if ( !UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
 496     {
 497         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 498
 499         retval = FALSE;
 500     }
 501
 502     // MDI child frame window class.
 503     if ( !UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
 504     {
 505         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 506
 507         retval = FALSE;
 508     }
 509
 510     // "no redraw" MDI child frame
 511     if ( !UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
 512     {
 513         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 514
 515         retval = FALSE;
 516     }
 517
 518     // panel window class.
 519     if ( !UnregisterClass(wxPanelClassName, wxhInstance) )
 520     {
 521         wxLogLastError(wxT("UnregisterClass(panel)"));
 522
 523         retval = FALSE;
 524     }
 525
 526     // no redraw panel window class.
 527     if ( !UnregisterClass(wxPanelClassNameNR, wxhInstance) )
 528     {
 529         wxLogLastError(wxT("UnregisterClass(no redraw panel)"));
 530
 531         retval = FALSE;
 532     }
 533
 534     // canvas and textsubwindow class name
 535     if ( !UnregisterClass(wxCanvasClassName, wxhInstance) )
 536     {
 537         wxLogLastError(wxT("UnregisterClass(canvas)"));
 538
 539         retval = FALSE;
 540     }
 541
 542     if ( !UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
 543     {
 544         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 545
 546         retval = FALSE;
 547     }
 548 #endif
 549     // __WXMICROWIN__
 550     return retval;
 551 }
 552
 553 // ---------------------------------------------------------------------------
 554 // Convert Windows to argc, argv style
 555 // ---------------------------------------------------------------------------
 556
 557 void wxApp::ConvertToStandardCommandArgs(const char* lpCmdLine)
 558 {
 559     // break the command line in words
 560     wxArrayString args =
 561         wxCmdLineParser::ConvertStringToArgs(wxConvertMB2WX(lpCmdLine));
 562
 563     // +1 here for the program name
 564     argc = args.GetCount() + 1;
 565
 566     // and +1 here for the terminating NULL
 567     argv = new wxChar *[argc + 1];
 568
 569     argv[0] = new wxChar[260]; // 260 is MAX_PATH value from windef.h
 570     ::GetModuleFileName(wxhInstance, argv[0], 260);
 571
 572     // also set the app name from argv[0]
 573     wxString name;
 574     wxFileName::SplitPath(argv[0], NULL, &name, NULL);
 575
 576     SetAppName(name);
 577
 578     // copy all the other arguments to wxApp::argv[]
 579     for ( int i = 1; i < argc; i++ )
 580     {
 581         argv[i] = copystring(args[i - 1]);
 582     }
 583
 584     // argv[] must be NULL-terminated
 585     argv[argc] = NULL;
 586 }
 587
 588 //// Cleans up any wxWindows internal structures left lying around
 589
 590 void wxApp::CleanUp()
 591 {
 592     //// COMMON CLEANUP
 593
 594 #if wxUSE_LOG
 595     // flush the logged messages if any and install a 'safer' log target: the
 596     // default one (wxLogGui) can't be used after the resources are freed just
 597     // below and the user suppliedo ne might be even more unsafe (using any
 598     // wxWindows GUI function is unsafe starting from now)
 599     wxLog::DontCreateOnDemand();
 600
 601     // this will flush the old messages if any
 602     delete wxLog::SetActiveTarget(new wxLogStderr);
 603 #endif // wxUSE_LOG
 604
 605     // One last chance for pending objects to be cleaned up
 606     wxTheApp->DeletePendingObjects();
 607
 608     wxModule::CleanUpModules();
 609
 610 #if wxUSE_WX_RESOURCES
 611     wxCleanUpResourceSystem();
 612
 613     //  wxDefaultResourceTable->ClearTable();
 614 #endif
 615
 616     wxDeleteStockObjects();
 617
 618     // Destroy all GDI lists, etc.
 619     wxDeleteStockLists();
 620
 621     delete wxTheColourDatabase;
 622     wxTheColourDatabase = NULL;
 623
 624     wxBitmap::CleanUpHandlers();
 625
 626     delete[] wxBuffer;
 627     wxBuffer = NULL;
 628
 629     //// WINDOWS-SPECIFIC CLEANUP
 630
 631 #ifndef __WXMICROWIN__
 632     wxSetKeyboardHook(FALSE);
 633 #endif
 634
 635 #if wxUSE_PENWINDOWS
 636     wxCleanUpPenWin();
 637 #endif
 638
 639     if (wxSTD_FRAME_ICON)
 640         DestroyIcon(wxSTD_FRAME_ICON);
 641     if (wxSTD_MDICHILDFRAME_ICON)
 642         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 643     if (wxSTD_MDIPARENTFRAME_ICON)
 644         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 645
 646     if (wxDEFAULT_FRAME_ICON)
 647         DestroyIcon(wxDEFAULT_FRAME_ICON);
 648     if (wxDEFAULT_MDICHILDFRAME_ICON)
 649         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 650     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 651         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 652
 653     if ( wxDisableButtonBrush )
 654         ::DeleteObject( wxDisableButtonBrush );
 655
 656 #if wxUSE_OLE
 657     ::OleUninitialize();
 658 #endif
 659
 660 #ifdef WXMAKINGDLL
 661     // for an EXE the classes are unregistered when it terminates but DLL may
 662     // be loaded several times (load/unload/load) into the same process in
 663     // which case the registration will fail after the first time if we don't
 664     // unregister the classes now
 665     UnregisterWindowClasses();
 666 #endif // WXMAKINGDLL
 667
 668 #if wxUSE_CTL3D
 669     Ctl3dUnregister(wxhInstance);
 670 #endif
 671
 672     delete wxWinHandleHash;
 673
 674     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 675     // create a module for that as it's part of the core.
 676     delete wxPendingEvents;
 677
 678 #if wxUSE_THREADS
 679     delete wxPendingEventsLocker;
 680     // If we don't do the following, we get an apparent memory leak
 681 #if wxUSE_VALIDATORS
 682     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 683 #endif // wxUSE_VALIDATORS
 684 #endif // wxUSE_THREADS
 685
 686     wxClassInfo::CleanUpClasses();
 687
 688     delete wxTheApp;
 689     wxTheApp = NULL;
 690
 691 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 692     // At this point we want to check if there are any memory
 693     // blocks that aren't part of the wxDebugContext itself,
 694     // as a special case. Then when dumping we need to ignore
 695     // wxDebugContext, too.
 696     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 697     {
 698         wxLogMessage(wxT("There were memory leaks."));
 699         wxDebugContext::Dump();
 700         wxDebugContext::PrintStatistics();
 701     }
 702     //  wxDebugContext::SetStream(NULL, NULL);
 703 #endif
 704
 705 #if wxUSE_LOG
 706     // do it as the very last thing because everything else can log messages
 707     delete wxLog::SetActiveTarget(NULL);
 708 #endif // wxUSE_LOG
 709 }
 710
 711 //----------------------------------------------------------------------
 712 // Entry point helpers, used by wxPython
 713 //----------------------------------------------------------------------
 714
 715 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 716 {
 717     return wxApp::Initialize();
 718 }
 719
 720 int WXDLLEXPORT wxEntryInitGui()
 721 {
 722     return wxTheApp->OnInitGui();
 723 }
 724
 725 void WXDLLEXPORT wxEntryCleanup()
 726 {
 727     wxApp::CleanUp();
 728 }
 729
 730
 731 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 732
 733 // temporarily disable this warning which would be generated in release builds
 734 // because of __try
 735 #ifdef __VISUALC__
 736     #pragma warning(disable: 4715) // not all control paths return a value
 737 #endif // Visual C++
 738
 739 //----------------------------------------------------------------------
 740 // Main wxWindows entry point
 741 //----------------------------------------------------------------------
 742 int wxEntry(WXHINSTANCE hInstance,
 743             WXHINSTANCE WXUNUSED(hPrevInstance),
 744             char *lpCmdLine,
 745             int nCmdShow,
 746             bool enterLoop)
 747 {
 748     // do check for memory leaks on program exit
 749     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 750     //  deallocated memory which may be used to simulate low-memory condition)
 751 #ifndef __WXMICROWIN__
 752     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 753 #endif
 754
 755 #ifdef __MWERKS__
 756 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 757     // This seems to be necessary since there are 'rogue'
 758     // objects present at this point (perhaps global objects?)
 759     // Setting a checkpoint will ignore them as far as the
 760     // memory checking facility is concerned.
 761     // Of course you may argue that memory allocated in globals should be
 762     // checked, but this is a reasonable compromise.
 763     wxDebugContext::SetCheckpoint();
 764 #endif
 765 #endif
 766
 767     // take everything into a try-except block to be able to call
 768     // OnFatalException() if necessary
 769 #if wxUSE_ON_FATAL_EXCEPTION
 770     __try {
 771 #endif
 772         wxhInstance = (HINSTANCE) hInstance;
 773
 774         if (!wxEntryStart(0,0))
 775             return 0;
 776
 777         // create the application object or ensure that one already exists
 778         if (!wxTheApp)
 779         {
 780             // The app may have declared a global application object, but we recommend
 781             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 782             // function for delayed, dynamic app object construction.
 783             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 784                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 785
 786             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 787         }
 788
 789         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 790
 791         // save the WinMain() parameters
 792         if (lpCmdLine) // MicroWindows passes NULL
 793             wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 794         wxTheApp->m_nCmdShow = nCmdShow;
 795
 796         // We really don't want timestamps by default, because it means
 797         // we can't simply double-click on the error message and get to that
 798         // line in the source. So VC++ at least, let's have a sensible default.
 799 #ifdef __VISUALC__
 800         wxLog::SetTimestamp(NULL);
 801 #endif
 802
 803         int retValue = 0;
 804
 805         // it is common to create a modal dialog in OnInit() (to ask/notify the
 806         // user about something) but it wouldn't work if we don't change the
 807         // "exit on delete last frame" flag here as when this dialog is
 808         // deleted, the app would terminate (it was the last top level window
 809         // as the main frame wasn't created yet!), so disable this behaviour
 810         // temproarily
 811         bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
 812         wxTheApp->SetExitOnFrameDelete(FALSE);
 813
 814         // init the app
 815         retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 816
 817         // restore the old flag value
 818         wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
 819
 820         if ( retValue == 0 )
 821         {
 822             if ( enterLoop )
 823             {
 824                 // run the main loop
 825                 retValue = wxTheApp->OnRun();
 826             }
 827             else
 828             {
 829                 // we want to initialize, but not run or exit immediately.
 830                 return 1;
 831             }
 832         }
 833         //else: app initialization failed, so we skipped OnRun()
 834
 835         wxWindow *topWindow = wxTheApp->GetTopWindow();
 836         if ( topWindow )
 837         {
 838             // Forcibly delete the window.
 839             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 840                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 841             {
 842                 topWindow->Close(TRUE);
 843                 wxTheApp->DeletePendingObjects();
 844             }
 845             else
 846             {
 847                 delete topWindow;
 848                 wxTheApp->SetTopWindow(NULL);
 849             }
 850         }
 851
 852         wxTheApp->OnExit();
 853
 854         wxEntryCleanup();
 855
 856         return retValue;
 857
 858 #if wxUSE_ON_FATAL_EXCEPTION
 859     }
 860     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 861                                    : EXCEPTION_CONTINUE_SEARCH ) {
 862         if ( wxTheApp )
 863         {
 864            // give the user a chance to do something special about this
 865            wxTheApp->OnFatalException();
 866         }
 867
 868         ::ExitProcess(3); // the same exit code as abort()
 869
 870         // NOTREACHED
 871     }
 872 #endif // wxUSE_ON_FATAL_EXCEPTION
 873 }
 874
 875 // restore warning state
 876 #ifdef __VISUALC__
 877     #pragma warning(default: 4715) // not all control paths return a value
 878 #endif // Visual C++
 879
 880 #else /*  _WINDLL  */
 881
 882 //----------------------------------------------------------------------
 883 // Entry point for wxWindows + the App in a DLL
 884 //----------------------------------------------------------------------
 885
 886 int wxEntry(WXHINSTANCE hInstance)
 887 {
 888     wxhInstance = (HINSTANCE) hInstance;
 889     wxEntryStart(0, 0);
 890
 891     // The app may have declared a global application object, but we recommend
 892     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 893     // for delayed, dynamic app object construction.
 894     if (!wxTheApp)
 895     {
 896         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 897                      "No initializer - use IMPLEMENT_APP macro." );
 898
 899         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 900     }
 901
 902     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 903
 904     wxTheApp->argc = 0;
 905     wxTheApp->argv = NULL;
 906
 907     wxEntryInitGui();
 908
 909     wxTheApp->OnInit();
 910
 911     wxWindow *topWindow = wxTheApp->GetTopWindow();
 912     if ( topWindow && topWindow->GetHWND())
 913     {
 914         topWindow->Show(TRUE);
 915     }
 916
 917     return 1;
 918 }
 919 #endif // _WINDLL
 920
 921 //// Static member initialization
 922
 923 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 924
 925 wxApp::wxApp()
 926 {
 927     argc = 0;
 928     argv = NULL;
 929     m_printMode = wxPRINT_WINDOWS;
 930     m_auto3D = TRUE;
 931 }
 932
 933 wxApp::~wxApp()
 934 {
 935     // Delete command-line args
 936     int i;
 937     for (i = 0; i < argc; i++)
 938     {
 939         delete[] argv[i];
 940     }
 941     delete[] argv;
 942 }
 943
 944 bool wxApp::Initialized()
 945 {
 946 #ifndef _WINDLL
 947     if (GetTopWindow())
 948         return TRUE;
 949     else
 950         return FALSE;
 951 #else // Assume initialized if DLL (no way of telling)
 952     return TRUE;
 953 #endif
 954 }
 955
 956 /*
 957  * Get and process a message, returning FALSE if WM_QUIT
 958  * received (and also set the flag telling the app to exit the main loop)
 959  *
 960  */
 961 bool wxApp::DoMessage()
 962 {
 963     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 964     if ( rc == 0 )
 965     {
 966         // got WM_QUIT
 967         m_keepGoing = FALSE;
 968
 969         return FALSE;
 970     }
 971     else if ( rc == -1 )
 972     {
 973         // should never happen, but let's test for it nevertheless
 974         wxLogLastError(wxT("GetMessage"));
 975     }
 976     else
 977     {
 978 #if wxUSE_THREADS
 979         wxASSERT_MSG( wxThread::IsMain(),
 980                       wxT("only the main thread can process Windows messages") );
 981
 982         static bool s_hadGuiLock = TRUE;
 983         static wxMsgArray s_aSavedMessages;
 984
 985         // if a secondary thread owns is doing GUI calls, save all messages for
 986         // later processing - we can't process them right now because it will
 987         // lead to recursive library calls (and we're not reentrant)
 988         if ( !wxGuiOwnedByMainThread() )
 989         {
 990             s_hadGuiLock = FALSE;
 991
 992             // leave out WM_COMMAND messages: too dangerous, sometimes
 993             // the message will be processed twice
 994             if ( !wxIsWaitingForThread() ||
 995                     s_currentMsg.message != WM_COMMAND )
 996             {
 997                 s_aSavedMessages.Add(s_currentMsg);
 998             }
 999
1000             return TRUE;
1001         }
1002         else
1003         {
1004             // have we just regained the GUI lock? if so, post all of the saved
1005             // messages
1006             //
1007             // FIXME of course, it's not _exactly_ the same as processing the
1008             //       messages normally - expect some things to break...
1009             if ( !s_hadGuiLock )
1010             {
1011                 s_hadGuiLock = TRUE;
1012
1013                 size_t count = s_aSavedMessages.Count();
1014                 for ( size_t n = 0; n < count; n++ )
1015                 {
1016                     MSG& msg = s_aSavedMessages[n];
1017
1018                     if ( !ProcessMessage((WXMSG *)&msg) )
1019                     {
1020                         ::TranslateMessage(&msg);
1021                         ::DispatchMessage(&msg);
1022                     }
1023                 }
1024
1025                 s_aSavedMessages.Empty();
1026             }
1027         }
1028 #endif // wxUSE_THREADS
1029
1030         // Process the message
1031         DoMessage((WXMSG *)&s_currentMsg);
1032     }
1033
1034     return TRUE;
1035 }
1036
1037 void wxApp::DoMessage(WXMSG *pMsg)
1038 {
1039     if ( !ProcessMessage(pMsg) )
1040     {
1041         ::TranslateMessage((MSG *)pMsg);
1042         ::DispatchMessage((MSG *)pMsg);
1043     }
1044 }
1045
1046 /*
1047  * Keep trying to process messages until WM_QUIT
1048  * received.
1049  *
1050  * If there are messages to be processed, they will all be
1051  * processed and OnIdle will not be called.
1052  * When there are no more messages, OnIdle is called.
1053  * If OnIdle requests more time,
1054  * it will be repeatedly called so long as there are no pending messages.
1055  * A 'feature' of this is that once OnIdle has decided that no more processing
1056  * is required, then it won't get processing time until further messages
1057  * are processed (it'll sit in DoMessage).
1058  */
1059
1060 int wxApp::MainLoop()
1061 {
1062     m_keepGoing = TRUE;
1063
1064     while ( m_keepGoing )
1065     {
1066 #if wxUSE_THREADS
1067         wxMutexGuiLeaveOrEnter();
1068 #endif // wxUSE_THREADS
1069
1070         while ( !Pending() && ProcessIdle() )
1071             ;
1072
1073         // a message came or no more idle processing to do
1074         DoMessage();
1075     }
1076
1077     return s_currentMsg.wParam;
1078 }
1079
1080 // Returns TRUE if more time is needed.
1081 bool wxApp::ProcessIdle()
1082 {
1083     wxIdleEvent event;
1084     event.SetEventObject(this);
1085     ProcessEvent(event);
1086
1087     return event.MoreRequested();
1088 }
1089
1090 void wxApp::ExitMainLoop()
1091 {
1092     // VZ: why not ::PostQuitMessage()?
1093     m_keepGoing = FALSE;
1094 }
1095
1096 bool wxApp::Pending()
1097 {
1098     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
1099 }
1100
1101 void wxApp::Dispatch()
1102 {
1103     DoMessage();
1104 }
1105
1106 /*
1107  * Give all windows a chance to preprocess
1108  * the message. Some may have accelerator tables, or have
1109  * MDI complications.
1110  */
1111
1112 bool wxApp::ProcessMessage(WXMSG *wxmsg)
1113 {
1114     MSG *msg = (MSG *)wxmsg;
1115     HWND hwnd = msg->hwnd;
1116     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
1117
1118     // this may happen if the event occured in a standard modeless dialog (the
1119     // only example of which I know of is the find/replace dialog) - then call
1120     // IsDialogMessage() to make TAB navigation in it work
1121     if ( !wndThis )
1122     {
1123         // we need to find the dialog containing this control as
1124         // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
1125         // them) if we call it for the control itself
1126         while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
1127         {
1128             hwnd = ::GetParent(hwnd);
1129         }
1130
1131         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
1132     }
1133
1134 #if wxUSE_TOOLTIPS
1135     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1136     // popup the tooltip bubbles
1137     if ( (msg->message == WM_MOUSEMOVE) )
1138     {
1139         wxToolTip *tt = wndThis->GetToolTip();
1140         if ( tt )
1141         {
1142             tt->RelayEvent(wxmsg);
1143         }
1144     }
1145 #endif // wxUSE_TOOLTIPS
1146
1147     // allow the window to prevent certain messages from being
1148     // translated/processed (this is currently used by wxTextCtrl to always
1149     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
1150     if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
1151     {
1152         return FALSE;
1153     }
1154
1155     // try translations first: the accelerators override everything
1156     wxWindow *wnd;
1157
1158     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1159     {
1160         if ( wnd->MSWTranslateMessage(wxmsg))
1161             return TRUE;
1162
1163         // stop at first top level window, i.e. don't try to process the key
1164         // strokes originating in a dialog using the accelerators of the parent
1165         // frame - this doesn't make much sense
1166         if ( wnd->IsTopLevel() )
1167             break;
1168     }
1169
1170     // now try the other hooks (kbd navigation is handled here): we start from
1171     // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
1172     // called above
1173     for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
1174     {
1175         if ( wnd->MSWProcessMessage(wxmsg) )
1176             return TRUE;
1177     }
1178
1179     // no special preprocessing for this message, dispatch it normally
1180     return FALSE;
1181 }
1182
1183 void wxApp::OnIdle(wxIdleEvent& event)
1184 {
1185     static bool s_inOnIdle = FALSE;
1186
1187     // Avoid recursion (via ProcessEvent default case)
1188     if ( s_inOnIdle )
1189         return;
1190
1191     s_inOnIdle = TRUE;
1192
1193     // If there are pending events, we must process them: pending events
1194     // are either events to the threads other than main or events posted
1195     // with wxPostEvent() functions
1196     // GRG: I have moved this here so that all pending events are processed
1197     //   before starting to delete any objects. This behaves better (in
1198     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1199     //   behaviour. Changed Feb/2000 before 2.1.14
1200     ProcessPendingEvents();
1201
1202     // 'Garbage' collection of windows deleted with Close().
1203     DeletePendingObjects();
1204
1205 #if wxUSE_LOG
1206     // flush the logged messages if any
1207     wxLog::FlushActive();
1208 #endif // wxUSE_LOG
1209
1210 #if wxUSE_DC_CACHEING
1211     // automated DC cache management: clear the cached DCs and bitmap
1212     // if it's likely that the app has finished with them, that is, we
1213     // get an idle event and we're not dragging anything.
1214     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
1215         wxDC::ClearCache();
1216 #endif // wxUSE_DC_CACHEING
1217
1218     // Send OnIdle events to all windows
1219     if ( SendIdleEvents() )
1220     {
1221         // SendIdleEvents() returns TRUE if at least one window requested more
1222         // idle events
1223         event.RequestMore(TRUE);
1224     }
1225
1226     s_inOnIdle = FALSE;
1227 }
1228
1229 // Send idle event to all top-level windows
1230 bool wxApp::SendIdleEvents()
1231 {
1232     bool needMore = FALSE;
1233
1234     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1235     while (node)
1236     {
1237         wxWindow* win = node->GetData();
1238         if (SendIdleEvents(win))
1239             needMore = TRUE;
1240         node = node->GetNext();
1241     }
1242
1243     return needMore;
1244 }
1245
1246 // Send idle event to window and all subwindows
1247 bool wxApp::SendIdleEvents(wxWindow* win)
1248 {
1249     bool needMore = FALSE;
1250
1251     wxIdleEvent event;
1252     event.SetEventObject(win);
1253     win->GetEventHandler()->ProcessEvent(event);
1254
1255     if (event.MoreRequested())
1256         needMore = TRUE;
1257
1258     wxNode* node = win->GetChildren().First();
1259     while (node)
1260     {
1261         wxWindow* win = (wxWindow*) node->Data();
1262         if (SendIdleEvents(win))
1263             needMore = TRUE;
1264
1265         node = node->Next();
1266     }
1267     return needMore;
1268 }
1269
1270 void wxApp::DeletePendingObjects()
1271 {
1272     wxNode *node = wxPendingDelete.First();
1273     while (node)
1274     {
1275         wxObject *obj = (wxObject *)node->Data();
1276
1277         delete obj;
1278
1279         if (wxPendingDelete.Member(obj))
1280             delete node;
1281
1282         // Deleting one object may have deleted other pending
1283         // objects, so start from beginning of list again.
1284         node = wxPendingDelete.First();
1285     }
1286 }
1287
1288 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1289 {
1290     if (GetTopWindow())
1291         GetTopWindow()->Close(TRUE);
1292 }
1293
1294 // Default behaviour: close the application with prompts. The
1295 // user can veto the close, and therefore the end session.
1296 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1297 {
1298     if (GetTopWindow())
1299     {
1300         if (!GetTopWindow()->Close(!event.CanVeto()))
1301             event.Veto(TRUE);
1302     }
1303 }
1304
1305 /* static */
1306 int wxApp::GetComCtl32Version()
1307 {
1308 #ifdef __WXMICROWIN__
1309     return 0;
1310 #else
1311     // cache the result
1312     static int s_verComCtl32 = -1;
1313
1314     wxCRIT_SECT_DECLARE(csComCtl32);
1315     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1316
1317     if ( s_verComCtl32 == -1 )
1318     {
1319         // initally assume no comctl32.dll at all
1320         s_verComCtl32 = 0;
1321
1322         // do we have it?
1323         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1324
1325         // if so, then we can check for the version
1326         if ( hModuleComCtl32 )
1327         {
1328             // try to use DllGetVersion() if available in _headers_
1329             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1330                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1331                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1332                 if ( pfnDllGetVersion )
1333                 {
1334                     DLLVERSIONINFO dvi;
1335                     dvi.cbSize = sizeof(dvi);
1336
1337                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1338                     if ( FAILED(hr) )
1339                     {
1340                         wxLogApiError(_T("DllGetVersion"), hr);
1341                     }
1342                     else
1343                     {
1344                         // this is incompatible with _WIN32_IE values, but
1345                         // compatible with the other values returned by
1346                         // GetComCtl32Version()
1347                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1348                                             dvi.dwMinorVersion;
1349                     }
1350                 }
1351             #endif
1352                 // DllGetVersion() unavailable either during compile or
1353                 // run-time, try to guess the version otherwise
1354                 if ( !s_verComCtl32 )
1355                 {
1356                     // InitCommonControlsEx is unique to 4.70 and later
1357                     FARPROC theProc = ::GetProcAddress
1358                                         (
1359                                          hModuleComCtl32,
1360                                          "InitCommonControlsEx"
1361                                         );
1362
1363                     if ( !theProc )
1364                     {
1365                         // not found, must be 4.00
1366                         s_verComCtl32 = 400;
1367                     }
1368                     else
1369                     {
1370                         // many symbols appeared in comctl32 4.71, could use
1371                         // any of them except may be DllInstall
1372                         theProc = ::GetProcAddress
1373                                     (
1374                                      hModuleComCtl32,
1375                                      "InitializeFlatSB"
1376                                     );
1377                         if ( !theProc )
1378                         {
1379                             // not found, must be 4.70
1380                             s_verComCtl32 = 470;
1381                         }
1382                         else
1383                         {
1384                             // found, must be 4.71
1385                             s_verComCtl32 = 471;
1386                         }
1387                     }
1388                 }
1389         }
1390     }
1391
1392     return s_verComCtl32;
1393 #endif
1394 }
1395
1396 void wxExit()
1397 {
1398     wxLogError(_("Fatal error: exiting"));
1399
1400     wxApp::CleanUp();
1401     exit(0);
1402 }
1403
1404 // Yield to incoming messages
1405
1406 bool wxApp::Yield(bool onlyIfNeeded)
1407 {
1408     // MT-FIXME
1409     static bool s_inYield = FALSE;
1410
1411     // disable log flushing from here because a call to wxYield() shouldn't
1412     // normally result in message boxes popping up &c
1413     wxLog::Suspend();
1414
1415     if ( s_inYield )
1416     {
1417         if ( !onlyIfNeeded )
1418         {
1419             wxFAIL_MSG( wxT("wxYield called recursively" ) );
1420         }
1421
1422         return FALSE;
1423     }
1424
1425     s_inYield = TRUE;
1426
1427     // we don't want to process WM_QUIT from here - it should be processed in
1428     // the main event loop in order to stop it
1429     MSG msg;
1430     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1431             msg.message != WM_QUIT )
1432     {
1433 #if wxUSE_THREADS
1434         wxMutexGuiLeaveOrEnter();
1435 #endif // wxUSE_THREADS
1436
1437         if ( !wxTheApp->DoMessage() )
1438             break;
1439     }
1440
1441     // if there are pending events, we must process them.
1442     ProcessPendingEvents();
1443
1444     // let the logs be flashed again
1445     wxLog::Resume();
1446
1447     s_inYield = FALSE;
1448
1449     return TRUE;
1450 }
1451
1452 bool wxHandleFatalExceptions(bool doit)
1453 {
1454 #if wxUSE_ON_FATAL_EXCEPTION
1455     // assume this can only be called from the main thread
1456     gs_handleExceptions = doit;
1457
1458     return TRUE;
1459 #else
1460     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to use this function"));
1461
1462     (void)doit;
1463     return FALSE;
1464 #endif
1465 }
1466
1467 //-----------------------------------------------------------------------------
1468 // wxWakeUpIdle
1469 //-----------------------------------------------------------------------------
1470
1471 void wxWakeUpIdle()
1472 {
1473     // Send the top window a dummy message so idle handler processing will
1474     // start up again.  Doing it this way ensures that the idle handler
1475     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1476     // the same for the main app thread only)
1477     wxWindow *topWindow = wxTheApp->GetTopWindow();
1478     if ( topWindow )
1479     {
1480         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1481         {
1482             // should never happen
1483             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1484         }
1485     }
1486 }
1487
1488 //-----------------------------------------------------------------------------
1489
1490 wxIcon
1491 wxApp::GetStdIcon(int which) const
1492 {
1493     switch(which)
1494     {
1495         case wxICON_INFORMATION:
1496             return wxIcon("wxICON_INFO");
1497
1498         case wxICON_QUESTION:
1499             return wxIcon("wxICON_QUESTION");
1500
1501         case wxICON_EXCLAMATION:
1502             return wxIcon("wxICON_WARNING");
1503
1504         default:
1505             wxFAIL_MSG(wxT("requested non existent standard icon"));
1506             // still fall through
1507
1508         case wxICON_HAND:
1509             return wxIcon("wxICON_ERROR");
1510     }
1511 }
1512
1513 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1514 // if in a separate file. So include it here to ensure it's linked.
1515 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1516 #include "main.cpp"
1517 #endif