src/msw/app.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        app.cpp
   3 // Purpose:     wxApp
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     04/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Julian Smart and Markus Holzem
   9 // Licence:     wxWindows license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "app.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/pen.h"
  37     #include "wx/brush.h"
  38     #include "wx/cursor.h"
  39     #include "wx/icon.h"
  40     #include "wx/palette.h"
  41     #include "wx/dc.h"
  42     #include "wx/dialog.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45     #include "wx/dynarray.h"
  46     #include "wx/wxchar.h"
  47     #include "wx/icon.h"
  48 #endif
  49
  50 #include "wx/log.h"
  51 #include "wx/module.h"
  52
  53 #include "wx/msw/private.h"
  54
  55 #if wxUSE_THREADS
  56     #include "wx/thread.h"
  57
  58     // define the array of MSG strutures
  59     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  60
  61     #include "wx/arrimpl.cpp"
  62
  63     WX_DEFINE_OBJARRAY(wxMsgArray);
  64 #endif // wxUSE_THREADS
  65
  66 #if wxUSE_WX_RESOURCES
  67     #include "wx/resource.h"
  68 #endif
  69
  70 #if wxUSE_TOOLTIPS
  71     #include "wx/tooltip.h"
  72 #endif // wxUSE_TOOLTIPS
  73
  74 // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some
  75 // compilers don't support it (missing headers, libs, ...)
  76 #if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__)
  77     #undef wxUSE_OLE
  78
  79     #define  wxUSE_OLE 0
  80 #endif // broken compilers
  81
  82 #if wxUSE_OLE
  83     #include <ole2.h>
  84 #endif
  85
  86 #include <string.h>
  87 #include <ctype.h>
  88
  89 #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__))
  90     #include <commctrl.h>
  91 #endif
  92
  93 #ifndef __WXMICROWIN__
  94 #include "wx/msw/msvcrt.h"
  95 #endif
  96
  97 // ----------------------------------------------------------------------------
  98 // conditional compilation
  99 // ----------------------------------------------------------------------------
 100
 101 // The macro _WIN32_IE is defined by commctrl.h (unless it had already been
 102 // defined before) and shows us what common control features are available
 103 // during the compile time (it doesn't mean that they will be available during
 104 // the run-time, use GetComCtl32Version() to test for them!). The possible
 105 // values are:
 106 //
 107 // 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
 108 // 0x0300                      4.70              IE 3.x
 109 // 0x0400                      4.71              IE 4.0
 110 // 0x0401                      4.72              IE 4.01 and Win98
 111 // 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
 112
 113 #ifndef _WIN32_IE
 114     // minimal set of features by default
 115     #define _WIN32_IE 0x0200
 116 #endif
 117
 118 #if _WIN32_IE >= 0x0300 \
 119     && !( defined(__MINGW32__) && !wxCHECK_W32API_VERSION( 1, 0 ) )
 120     #include <shlwapi.h>
 121 #endif
 122
 123 // ---------------------------------------------------------------------------
 124 // global variables
 125 // ---------------------------------------------------------------------------
 126
 127 extern wxChar *wxBuffer;
 128 extern wxList *wxWinHandleList;
 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 - if so, abort right now as it has no chance to
 197     // work
 198 #if wxUSE_UNICODE
 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.\nProgram aborted."),
 208          _T("wxWindows Fatal Error"),
 209          MB_ICONERROR | MB_OK
 210         );
 211
 212         return FALSE;
 213     }
 214 #endif // wxUSE_UNICODE
 215
 216     // Some people may wish to use this, but
 217     // probably it shouldn't be here by default.
 218 #ifdef __WXDEBUG__
 219     //    wxRedirectIOToConsole();
 220 #endif
 221
 222     wxBuffer = new wxChar[1500]; // FIXME
 223
 224     wxClassInfo::InitializeClasses();
 225
 226 #if wxUSE_THREADS
 227     wxPendingEventsLocker = new wxCriticalSection;
 228 #endif
 229
 230     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 231     wxTheColourDatabase->Initialize();
 232
 233     wxInitializeStockLists();
 234     wxInitializeStockObjects();
 235
 236 #if wxUSE_WX_RESOURCES
 237     wxInitializeResourceSystem();
 238 #endif
 239
 240     wxBitmap::InitStandardHandlers();
 241
 242 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 243     InitCommonControls();
 244 #endif // __WIN95__
 245
 246 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 247
 248 #ifdef __WIN16__
 249     // for OLE, enlarge message queue to be as large as possible
 250     int iMsg = 96;
 251     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 252         ;
 253 #endif // Win16
 254
 255     // we need to initialize OLE library
 256     if ( FAILED(::OleInitialize(NULL)) )
 257         wxLogError(_("Cannot initialize OLE"));
 258
 259 #endif // wxUSE_OLE
 260
 261 #if wxUSE_CTL3D
 262     if (!Ctl3dRegister(wxhInstance))
 263         wxLogError(wxT("Cannot register CTL3D"));
 264
 265     Ctl3dAutoSubclass(wxhInstance);
 266 #endif // wxUSE_CTL3D
 267
 268     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 269 #if 0
 270     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 271     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 272     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 273
 274     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 275     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 276     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 277 #endif // 0
 278
 279     RegisterWindowClasses();
 280
 281 #ifndef __WXMICROWIN__
 282     // Create the brush for disabling bitmap buttons
 283
 284     LOGBRUSH lb;
 285     lb.lbStyle = BS_PATTERN;
 286     lb.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     wxWinHandleList = new wxList(wxKEY_INTEGER);
 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     // frame window class.
 467     if ( !UnregisterClass(wxFrameClassName, wxhInstance) )
 468     {
 469         wxLogLastError(wxT("UnregisterClass(frame)"));
 470
 471         retval = FALSE;
 472     }
 473
 474     // "no redraw" frame
 475     if ( !UnregisterClass(wxFrameClassNameNoRedraw, wxhInstance) )
 476     {
 477         wxLogLastError(wxT("UnregisterClass(no redraw frame)"));
 478
 479         return FALSE;
 480     }
 481
 482     // MDI frame window class.
 483     if ( !UnregisterClass(wxMDIFrameClassName, wxhInstance) )
 484     {
 485         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 486
 487         retval = FALSE;
 488     }
 489
 490     // "no redraw" MDI frame
 491     if ( !UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
 492     {
 493         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 494
 495         retval = FALSE;
 496     }
 497
 498     // MDI child frame window class.
 499     if ( !UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
 500     {
 501         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 502
 503         retval = FALSE;
 504     }
 505
 506     // "no redraw" MDI child frame
 507     if ( !UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
 508     {
 509         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 510
 511         retval = FALSE;
 512     }
 513
 514     // panel window class.
 515     if ( !UnregisterClass(wxPanelClassName, wxhInstance) )
 516     {
 517         wxLogLastError(wxT("UnregisterClass(panel)"));
 518
 519         retval = FALSE;
 520     }
 521
 522     // no redraw panel window class.
 523     if ( !UnregisterClass(wxPanelClassNameNR, wxhInstance) )
 524     {
 525         wxLogLastError(wxT("UnregisterClass(no redraw panel)"));
 526
 527         retval = FALSE;
 528     }
 529
 530     // canvas and textsubwindow class name
 531     if ( !UnregisterClass(wxCanvasClassName, wxhInstance) )
 532     {
 533         wxLogLastError(wxT("UnregisterClass(canvas)"));
 534
 535         retval = FALSE;
 536     }
 537
 538     if ( !UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
 539     {
 540         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 541
 542         retval = FALSE;
 543     }
 544
 545     return retval;
 546 }
 547
 548 // ---------------------------------------------------------------------------
 549 // Convert Windows to argc, argv style
 550 // ---------------------------------------------------------------------------
 551
 552 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 553 {
 554     wxStringList args;
 555
 556     wxString cmdLine(lpCmdLine);
 557     int count = 0;
 558
 559     // Get application name
 560     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 561     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 562
 563     args.Add(name);
 564     count++;
 565
 566     wxStrcpy(name, wxFileNameFromPath(name));
 567     wxStripExtension(name);
 568     wxTheApp->SetAppName(name);
 569
 570     // Break up string
 571     // Treat strings enclosed in double-quotes as single arguments
 572     int i = 0;
 573     int len = cmdLine.Length();
 574     while (i < len)
 575     {
 576         // Skip whitespace
 577         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 578             i ++;
 579
 580         if (i < len)
 581         {
 582             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 583             {
 584                 i ++;
 585                 int first = i;
 586                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 587                     i ++;
 588
 589                 wxString arg(cmdLine.Mid(first, (i - first)));
 590
 591                 args.Add(arg);
 592                 count ++;
 593
 594                 if (i < len)
 595                     i ++; // Skip past 2nd quote
 596             }
 597             else // Unquoted argument
 598             {
 599                 int first = i;
 600                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 601                     i ++;
 602
 603                 wxString arg(cmdLine.Mid(first, (i - first)));
 604
 605                 args.Add(arg);
 606                 count ++;
 607             }
 608         }
 609     }
 610
 611     wxTheApp->argv = new wxChar*[count + 1];
 612     for (i = 0; i < count; i++)
 613     {
 614         wxString arg(args[i]);
 615         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 616     }
 617     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 618     wxTheApp->argc = count;
 619 }
 620
 621 //// Cleans up any wxWindows internal structures left lying around
 622
 623 void wxApp::CleanUp()
 624 {
 625     //// COMMON CLEANUP
 626
 627 #if wxUSE_LOG
 628     // flush the logged messages if any and install a 'safer' log target: the
 629     // default one (wxLogGui) can't be used after the resources are freed just
 630     // below and the user suppliedo ne might be even more unsafe (using any
 631     // wxWindows GUI function is unsafe starting from now)
 632     wxLog::DontCreateOnDemand();
 633
 634     // this will flush the old messages if any
 635     delete wxLog::SetActiveTarget(new wxLogStderr);
 636 #endif // wxUSE_LOG
 637
 638     // One last chance for pending objects to be cleaned up
 639     wxTheApp->DeletePendingObjects();
 640
 641     wxModule::CleanUpModules();
 642
 643 #if wxUSE_WX_RESOURCES
 644     wxCleanUpResourceSystem();
 645
 646     //  wxDefaultResourceTable->ClearTable();
 647 #endif
 648
 649     wxDeleteStockObjects();
 650
 651     // Destroy all GDI lists, etc.
 652     wxDeleteStockLists();
 653
 654     delete wxTheColourDatabase;
 655     wxTheColourDatabase = NULL;
 656
 657     wxBitmap::CleanUpHandlers();
 658
 659     delete[] wxBuffer;
 660     wxBuffer = NULL;
 661
 662     //// WINDOWS-SPECIFIC CLEANUP
 663
 664 #ifndef __WXMICROWIN__
 665     wxSetKeyboardHook(FALSE);
 666 #endif
 667
 668 #if wxUSE_PENWINDOWS
 669     wxCleanUpPenWin();
 670 #endif
 671
 672     if (wxSTD_FRAME_ICON)
 673         DestroyIcon(wxSTD_FRAME_ICON);
 674     if (wxSTD_MDICHILDFRAME_ICON)
 675         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 676     if (wxSTD_MDIPARENTFRAME_ICON)
 677         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 678
 679     if (wxDEFAULT_FRAME_ICON)
 680         DestroyIcon(wxDEFAULT_FRAME_ICON);
 681     if (wxDEFAULT_MDICHILDFRAME_ICON)
 682         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 683     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 684         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 685
 686     if ( wxDisableButtonBrush )
 687         ::DeleteObject( wxDisableButtonBrush );
 688
 689 #if wxUSE_OLE
 690     ::OleUninitialize();
 691 #endif
 692
 693 #ifdef WXMAKINGDLL
 694     // for an EXE the classes are unregistered when it terminates but DLL may
 695     // be loaded several times (load/unload/load) into the same process in
 696     // which case the registration will fail after the first time if we don't
 697     // unregister the classes now
 698     UnregisterWindowClasses();
 699 #endif // WXMAKINGDLL
 700
 701 #if wxUSE_CTL3D
 702     Ctl3dUnregister(wxhInstance);
 703 #endif
 704
 705     if (wxWinHandleList)
 706         delete wxWinHandleList;
 707
 708     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 709     // create a module for that as it's part of the core.
 710     delete wxPendingEvents;
 711
 712 #if wxUSE_THREADS
 713     delete wxPendingEventsLocker;
 714     // If we don't do the following, we get an apparent memory leak
 715 #if wxUSE_VALIDATORS
 716     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 717 #endif // wxUSE_VALIDATORS
 718 #endif // wxUSE_THREADS
 719
 720     wxClassInfo::CleanUpClasses();
 721
 722     delete wxTheApp;
 723     wxTheApp = NULL;
 724
 725 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 726     // At this point we want to check if there are any memory
 727     // blocks that aren't part of the wxDebugContext itself,
 728     // as a special case. Then when dumping we need to ignore
 729     // wxDebugContext, too.
 730     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 731     {
 732         wxLogMessage(wxT("There were memory leaks."));
 733         wxDebugContext::Dump();
 734         wxDebugContext::PrintStatistics();
 735     }
 736     //  wxDebugContext::SetStream(NULL, NULL);
 737 #endif
 738
 739 #if wxUSE_LOG
 740     // do it as the very last thing because everything else can log messages
 741     delete wxLog::SetActiveTarget(NULL);
 742 #endif // wxUSE_LOG
 743 }
 744
 745 //----------------------------------------------------------------------
 746 // Entry point helpers, used by wxPython
 747 //----------------------------------------------------------------------
 748
 749 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 750 {
 751     return wxApp::Initialize();
 752 }
 753
 754 int WXDLLEXPORT wxEntryInitGui()
 755 {
 756     return wxTheApp->OnInitGui();
 757 }
 758
 759 void WXDLLEXPORT wxEntryCleanup()
 760 {
 761     wxApp::CleanUp();
 762 }
 763
 764
 765 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 766
 767 // temporarily disable this warning which would be generated in release builds
 768 // because of __try
 769 #ifdef __VISUALC__
 770     #pragma warning(disable: 4715) // not all control paths return a value
 771 #endif // Visual C++
 772
 773 //----------------------------------------------------------------------
 774 // Main wxWindows entry point
 775 //----------------------------------------------------------------------
 776 int wxEntry(WXHINSTANCE hInstance,
 777             WXHINSTANCE WXUNUSED(hPrevInstance),
 778             char *lpCmdLine,
 779             int nCmdShow,
 780             bool enterLoop)
 781 {
 782     // do check for memory leaks on program exit
 783     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 784     //  deallocated memory which may be used to simulate low-memory condition)
 785 #ifndef __WXMICROWIN__
 786     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 787 #endif
 788
 789 #ifdef __MWERKS__
 790 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 791     // This seems to be necessary since there are 'rogue'
 792     // objects present at this point (perhaps global objects?)
 793     // Setting a checkpoint will ignore them as far as the
 794     // memory checking facility is concerned.
 795     // Of course you may argue that memory allocated in globals should be
 796     // checked, but this is a reasonable compromise.
 797     wxDebugContext::SetCheckpoint();
 798 #endif
 799 #endif
 800
 801     // take everything into a try-except block to be able to call
 802     // OnFatalException() if necessary
 803 #if wxUSE_ON_FATAL_EXCEPTION
 804     __try {
 805 #endif
 806         wxhInstance = (HINSTANCE) hInstance;
 807
 808         if (!wxEntryStart(0,0))
 809             return 0;
 810
 811         // create the application object or ensure that one already exists
 812         if (!wxTheApp)
 813         {
 814             // The app may have declared a global application object, but we recommend
 815             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 816             // function for delayed, dynamic app object construction.
 817             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 818                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 819
 820             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 821         }
 822
 823         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 824
 825         // save the WinMain() parameters
 826         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 827         wxTheApp->m_nCmdShow = nCmdShow;
 828
 829         // We really don't want timestamps by default, because it means
 830         // we can't simply double-click on the error message and get to that
 831         // line in the source. So VC++ at least, let's have a sensible default.
 832 #ifdef __VISUALC__
 833         wxLog::SetTimestamp(NULL);
 834 #endif
 835
 836         int retValue = 0;
 837
 838         // it is common to create a modal dialog in OnInit() (to ask/notify the
 839         // user about something) but it wouldn't work if we don't change the
 840         // "exit on delete last frame" flag here as when this dialog is
 841         // deleted, the app would terminate (it was the last top level window
 842         // as the main frame wasn't created yet!), so disable this behaviour
 843         // temproarily
 844         bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
 845         wxTheApp->SetExitOnFrameDelete(FALSE);
 846
 847         // init the app
 848         retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 849
 850         // restore the old flag value
 851         wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
 852
 853         if ( retValue == 0 )
 854         {
 855             if ( enterLoop )
 856             {
 857                 // run the main loop
 858                 retValue = wxTheApp->OnRun();
 859             }
 860             else
 861             {
 862                 // we want to initialize, but not run or exit immediately.
 863                 return 1;
 864             }
 865         }
 866         //else: app initialization failed, so we skipped OnRun()
 867
 868         wxWindow *topWindow = wxTheApp->GetTopWindow();
 869         if ( topWindow )
 870         {
 871             // Forcibly delete the window.
 872             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 873                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 874             {
 875                 topWindow->Close(TRUE);
 876                 wxTheApp->DeletePendingObjects();
 877             }
 878             else
 879             {
 880                 delete topWindow;
 881                 wxTheApp->SetTopWindow(NULL);
 882             }
 883         }
 884
 885         wxTheApp->OnExit();
 886
 887         wxEntryCleanup();
 888
 889         return retValue;
 890
 891 #if wxUSE_ON_FATAL_EXCEPTION
 892     }
 893     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 894                                    : EXCEPTION_CONTINUE_SEARCH ) {
 895         if ( wxTheApp )
 896         {
 897            // give the user a chance to do something special about this
 898            wxTheApp->OnFatalException();
 899         }
 900
 901         ::ExitProcess(3); // the same exit code as abort()
 902
 903         // NOTREACHED
 904     }
 905 #endif // wxUSE_ON_FATAL_EXCEPTION
 906 }
 907
 908 // restore warning state
 909 #ifdef __VISUALC__
 910     #pragma warning(default: 4715) // not all control paths return a value
 911 #endif // Visual C++
 912
 913 #else /*  _WINDLL  */
 914
 915 //----------------------------------------------------------------------
 916 // Entry point for wxWindows + the App in a DLL
 917 //----------------------------------------------------------------------
 918
 919 int wxEntry(WXHINSTANCE hInstance)
 920 {
 921     wxhInstance = (HINSTANCE) hInstance;
 922     wxEntryStart(0, 0);
 923
 924     // The app may have declared a global application object, but we recommend
 925     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 926     // for delayed, dynamic app object construction.
 927     if (!wxTheApp)
 928     {
 929         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 930                      "No initializer - use IMPLEMENT_APP macro." );
 931
 932         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 933     }
 934
 935     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 936
 937     wxTheApp->argc = 0;
 938     wxTheApp->argv = NULL;
 939
 940     wxEntryInitGui();
 941
 942     wxTheApp->OnInit();
 943
 944     wxWindow *topWindow = wxTheApp->GetTopWindow();
 945     if ( topWindow && topWindow->GetHWND())
 946     {
 947         topWindow->Show(TRUE);
 948     }
 949
 950     return 1;
 951 }
 952 #endif // _WINDLL
 953
 954 //// Static member initialization
 955
 956 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 957
 958 wxApp::wxApp()
 959 {
 960     argc = 0;
 961     argv = NULL;
 962     m_printMode = wxPRINT_WINDOWS;
 963     m_auto3D = TRUE;
 964 }
 965
 966 wxApp::~wxApp()
 967 {
 968     // Delete command-line args
 969     int i;
 970     for (i = 0; i < argc; i++)
 971     {
 972         delete[] argv[i];
 973     }
 974     delete[] argv;
 975 }
 976
 977 bool wxApp::Initialized()
 978 {
 979 #ifndef _WINDLL
 980     if (GetTopWindow())
 981         return TRUE;
 982     else
 983         return FALSE;
 984 #else // Assume initialized if DLL (no way of telling)
 985     return TRUE;
 986 #endif
 987 }
 988
 989 /*
 990  * Get and process a message, returning FALSE if WM_QUIT
 991  * received (and also set the flag telling the app to exit the main loop)
 992  *
 993  */
 994 bool wxApp::DoMessage()
 995 {
 996     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 997     if ( rc == 0 )
 998     {
 999         // got WM_QUIT
1000         m_keepGoing = FALSE;
1001
1002         return FALSE;
1003     }
1004     else if ( rc == -1 )
1005     {
1006         // should never happen, but let's test for it nevertheless
1007         wxLogLastError(wxT("GetMessage"));
1008     }
1009     else
1010     {
1011 #if wxUSE_THREADS
1012         wxASSERT_MSG( wxThread::IsMain(),
1013                       wxT("only the main thread can process Windows messages") );
1014
1015         static bool s_hadGuiLock = TRUE;
1016         static wxMsgArray s_aSavedMessages;
1017
1018         // if a secondary thread owns is doing GUI calls, save all messages for
1019         // later processing - we can't process them right now because it will
1020         // lead to recursive library calls (and we're not reentrant)
1021         if ( !wxGuiOwnedByMainThread() )
1022         {
1023             s_hadGuiLock = FALSE;
1024
1025             // leave out WM_COMMAND messages: too dangerous, sometimes
1026             // the message will be processed twice
1027             if ( !wxIsWaitingForThread() ||
1028                     s_currentMsg.message != WM_COMMAND )
1029             {
1030                 s_aSavedMessages.Add(s_currentMsg);
1031             }
1032
1033             return TRUE;
1034         }
1035         else
1036         {
1037             // have we just regained the GUI lock? if so, post all of the saved
1038             // messages
1039             //
1040             // FIXME of course, it's not _exactly_ the same as processing the
1041             //       messages normally - expect some things to break...
1042             if ( !s_hadGuiLock )
1043             {
1044                 s_hadGuiLock = TRUE;
1045
1046                 size_t count = s_aSavedMessages.Count();
1047                 for ( size_t n = 0; n < count; n++ )
1048                 {
1049                     MSG& msg = s_aSavedMessages[n];
1050
1051                     if ( !ProcessMessage((WXMSG *)&msg) )
1052                     {
1053                         ::TranslateMessage(&msg);
1054                         ::DispatchMessage(&msg);
1055                     }
1056                 }
1057
1058                 s_aSavedMessages.Empty();
1059             }
1060         }
1061 #endif // wxUSE_THREADS
1062
1063         // Process the message
1064         DoMessage((WXMSG *)&s_currentMsg);
1065     }
1066
1067     return TRUE;
1068 }
1069
1070 void wxApp::DoMessage(WXMSG *pMsg)
1071 {
1072     if ( !ProcessMessage(pMsg) )
1073     {
1074         ::TranslateMessage((MSG *)pMsg);
1075         ::DispatchMessage((MSG *)pMsg);
1076     }
1077 }
1078
1079 /*
1080  * Keep trying to process messages until WM_QUIT
1081  * received.
1082  *
1083  * If there are messages to be processed, they will all be
1084  * processed and OnIdle will not be called.
1085  * When there are no more messages, OnIdle is called.
1086  * If OnIdle requests more time,
1087  * it will be repeatedly called so long as there are no pending messages.
1088  * A 'feature' of this is that once OnIdle has decided that no more processing
1089  * is required, then it won't get processing time until further messages
1090  * are processed (it'll sit in DoMessage).
1091  */
1092
1093 int wxApp::MainLoop()
1094 {
1095     m_keepGoing = TRUE;
1096
1097     while ( m_keepGoing )
1098     {
1099 #if wxUSE_THREADS
1100         wxMutexGuiLeaveOrEnter();
1101 #endif // wxUSE_THREADS
1102
1103         while ( !Pending() && ProcessIdle() )
1104             ;
1105
1106         // a message came or no more idle processing to do
1107         DoMessage();
1108     }
1109
1110     return s_currentMsg.wParam;
1111 }
1112
1113 // Returns TRUE if more time is needed.
1114 bool wxApp::ProcessIdle()
1115 {
1116     wxIdleEvent event;
1117     event.SetEventObject(this);
1118     ProcessEvent(event);
1119
1120     return event.MoreRequested();
1121 }
1122
1123 void wxApp::ExitMainLoop()
1124 {
1125     // VZ: why not ::PostQuitMessage()?
1126     m_keepGoing = FALSE;
1127 }
1128
1129 bool wxApp::Pending()
1130 {
1131     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
1132 }
1133
1134 void wxApp::Dispatch()
1135 {
1136     DoMessage();
1137 }
1138
1139 /*
1140  * Give all windows a chance to preprocess
1141  * the message. Some may have accelerator tables, or have
1142  * MDI complications.
1143  */
1144
1145 bool wxApp::ProcessMessage(WXMSG *wxmsg)
1146 {
1147     MSG *msg = (MSG *)wxmsg;
1148     HWND hwnd = msg->hwnd;
1149     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
1150
1151     // this may happen if the event occured in a standard modeless dialog (the
1152     // only example of which I know of is the find/replace dialog) - then call
1153     // IsDialogMessage() to make TAB navigation in it work
1154     if ( !wndThis )
1155     {
1156         // we need to find the dialog containing this control as
1157         // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
1158         // them) if we call it for the control itself
1159         while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
1160         {
1161             hwnd = ::GetParent(hwnd);
1162         }
1163
1164         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
1165     }
1166
1167 #if wxUSE_TOOLTIPS
1168     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1169     // popup the tooltip bubbles
1170     if ( (msg->message == WM_MOUSEMOVE) )
1171     {
1172         wxToolTip *tt = wndThis->GetToolTip();
1173         if ( tt )
1174         {
1175             tt->RelayEvent(wxmsg);
1176         }
1177     }
1178 #endif // wxUSE_TOOLTIPS
1179
1180     // allow the window to prevent certain messages from being
1181     // translated/processed (this is currently used by wxTextCtrl to always
1182     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
1183     if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
1184     {
1185         return FALSE;
1186     }
1187
1188     // try translations first: the accelerators override everything
1189     wxWindow *wnd;
1190
1191     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1192     {
1193         if ( wnd->MSWTranslateMessage(wxmsg))
1194             return TRUE;
1195
1196         // stop at first top level window, i.e. don't try to process the key
1197         // strokes originating in a dialog using the accelerators of the parent
1198         // frame - this doesn't make much sense
1199         if ( wnd->IsTopLevel() )
1200             break;
1201     }
1202
1203     // now try the other hooks (kbd navigation is handled here): we start from
1204     // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
1205     // called above
1206     for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
1207     {
1208         if ( wnd->MSWProcessMessage(wxmsg) )
1209             return TRUE;
1210     }
1211
1212     // no special preprocessing for this message, dispatch it normally
1213     return FALSE;
1214 }
1215
1216 void wxApp::OnIdle(wxIdleEvent& event)
1217 {
1218     static bool s_inOnIdle = FALSE;
1219
1220     // Avoid recursion (via ProcessEvent default case)
1221     if ( s_inOnIdle )
1222         return;
1223
1224     s_inOnIdle = TRUE;
1225
1226     // If there are pending events, we must process them: pending events
1227     // are either events to the threads other than main or events posted
1228     // with wxPostEvent() functions
1229     // GRG: I have moved this here so that all pending events are processed
1230     //   before starting to delete any objects. This behaves better (in
1231     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1232     //   behaviour. Changed Feb/2000 before 2.1.14
1233     ProcessPendingEvents();
1234
1235     // 'Garbage' collection of windows deleted with Close().
1236     DeletePendingObjects();
1237
1238 #if wxUSE_LOG
1239     // flush the logged messages if any
1240     wxLog::FlushActive();
1241 #endif // wxUSE_LOG
1242
1243 #if wxUSE_DC_CACHEING
1244     // automated DC cache management: clear the cached DCs and bitmap
1245     // if it's likely that the app has finished with them, that is, we
1246     // get an idle event and we're not dragging anything.
1247     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
1248         wxDC::ClearCache();
1249 #endif // wxUSE_DC_CACHEING
1250
1251     // Send OnIdle events to all windows
1252     if ( SendIdleEvents() )
1253     {
1254         // SendIdleEvents() returns TRUE if at least one window requested more
1255         // idle events
1256         event.RequestMore(TRUE);
1257     }
1258
1259     s_inOnIdle = FALSE;
1260 }
1261
1262 // Send idle event to all top-level windows
1263 bool wxApp::SendIdleEvents()
1264 {
1265     bool needMore = FALSE;
1266
1267     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1268     while (node)
1269     {
1270         wxWindow* win = node->GetData();
1271         if (SendIdleEvents(win))
1272             needMore = TRUE;
1273         node = node->GetNext();
1274     }
1275
1276     return needMore;
1277 }
1278
1279 // Send idle event to window and all subwindows
1280 bool wxApp::SendIdleEvents(wxWindow* win)
1281 {
1282     bool needMore = FALSE;
1283
1284     wxIdleEvent event;
1285     event.SetEventObject(win);
1286     win->GetEventHandler()->ProcessEvent(event);
1287
1288     if (event.MoreRequested())
1289         needMore = TRUE;
1290
1291     wxNode* node = win->GetChildren().First();
1292     while (node)
1293     {
1294         wxWindow* win = (wxWindow*) node->Data();
1295         if (SendIdleEvents(win))
1296             needMore = TRUE;
1297
1298         node = node->Next();
1299     }
1300     return needMore;
1301 }
1302
1303 void wxApp::DeletePendingObjects()
1304 {
1305     wxNode *node = wxPendingDelete.First();
1306     while (node)
1307     {
1308         wxObject *obj = (wxObject *)node->Data();
1309
1310         delete obj;
1311
1312         if (wxPendingDelete.Member(obj))
1313             delete node;
1314
1315         // Deleting one object may have deleted other pending
1316         // objects, so start from beginning of list again.
1317         node = wxPendingDelete.First();
1318     }
1319 }
1320
1321 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1322 {
1323     if (GetTopWindow())
1324         GetTopWindow()->Close(TRUE);
1325 }
1326
1327 // Default behaviour: close the application with prompts. The
1328 // user can veto the close, and therefore the end session.
1329 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1330 {
1331     if (GetTopWindow())
1332     {
1333         if (!GetTopWindow()->Close(!event.CanVeto()))
1334             event.Veto(TRUE);
1335     }
1336 }
1337
1338 /* static */
1339 int wxApp::GetComCtl32Version()
1340 {
1341 #ifdef __WXMICROWIN__
1342     return 0;
1343 #else
1344     // cache the result
1345     static int s_verComCtl32 = -1;
1346
1347     wxCRIT_SECT_DECLARE(csComCtl32);
1348     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1349
1350     if ( s_verComCtl32 == -1 )
1351     {
1352         // initally assume no comctl32.dll at all
1353         s_verComCtl32 = 0;
1354
1355         // do we have it?
1356         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1357
1358         // if so, then we can check for the version
1359         if ( hModuleComCtl32 )
1360         {
1361             // try to use DllGetVersion() if available in _headers_
1362             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1363                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1364                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1365                 if ( pfnDllGetVersion )
1366                 {
1367                     DLLVERSIONINFO dvi;
1368                     dvi.cbSize = sizeof(dvi);
1369
1370                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1371                     if ( FAILED(hr) )
1372                     {
1373                         wxLogApiError(_T("DllGetVersion"), hr);
1374                     }
1375                     else
1376                     {
1377                         // this is incompatible with _WIN32_IE values, but
1378                         // compatible with the other values returned by
1379                         // GetComCtl32Version()
1380                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1381                                             dvi.dwMinorVersion;
1382                     }
1383                 }
1384             #endif
1385                 // DllGetVersion() unavailable either during compile or
1386                 // run-time, try to guess the version otherwise
1387                 if ( !s_verComCtl32 )
1388                 {
1389                     // InitCommonControlsEx is unique to 4.70 and later
1390                     FARPROC theProc = ::GetProcAddress
1391                                         (
1392                                          hModuleComCtl32,
1393                                          "InitCommonControlsEx"
1394                                         );
1395
1396                     if ( !theProc )
1397                     {
1398                         // not found, must be 4.00
1399                         s_verComCtl32 = 400;
1400                     }
1401                     else
1402                     {
1403                         // many symbols appeared in comctl32 4.71, could use
1404                         // any of them except may be DllInstall
1405                         theProc = ::GetProcAddress
1406                                     (
1407                                      hModuleComCtl32,
1408                                      "InitializeFlatSB"
1409                                     );
1410                         if ( !theProc )
1411                         {
1412                             // not found, must be 4.70
1413                             s_verComCtl32 = 470;
1414                         }
1415                         else
1416                         {
1417                             // found, must be 4.71
1418                             s_verComCtl32 = 471;
1419                         }
1420                     }
1421                 }
1422         }
1423     }
1424
1425     return s_verComCtl32;
1426 #endif
1427 }
1428
1429 void wxExit()
1430 {
1431     wxLogError(_("Fatal error: exiting"));
1432
1433     wxApp::CleanUp();
1434     exit(0);
1435 }
1436
1437 // Yield to incoming messages
1438
1439 static bool gs_inYield = FALSE;
1440
1441 bool wxYield()
1442 {
1443     // disable log flushing from here because a call to wxYield() shouldn't
1444     // normally result in message boxes popping up &c
1445     wxLog::Suspend();
1446
1447 #ifdef __WXDEBUG__
1448     if (gs_inYield)
1449         wxFAIL_MSG( wxT("wxYield called recursively" ) );
1450 #endif
1451
1452     gs_inYield = TRUE;
1453
1454     // we don't want to process WM_QUIT from here - it should be processed in
1455     // the main event loop in order to stop it
1456     MSG msg;
1457     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1458             msg.message != WM_QUIT )
1459     {
1460 #if wxUSE_THREADS
1461         wxMutexGuiLeaveOrEnter();
1462 #endif // wxUSE_THREADS
1463
1464         if ( !wxTheApp->DoMessage() )
1465             break;
1466     }
1467
1468     // If they are pending events, we must process them.
1469     if (wxTheApp)
1470         wxTheApp->ProcessPendingEvents();
1471
1472     // let the logs be flashed again
1473     wxLog::Resume();
1474
1475     gs_inYield = FALSE;
1476
1477     return TRUE;
1478 }
1479
1480 // Yield to incoming messages; but fail silently if recursion is detected.
1481 bool wxYieldIfNeeded()
1482 {
1483     if (gs_inYield)
1484         return FALSE;
1485
1486     return wxYield();
1487 }
1488
1489 bool wxHandleFatalExceptions(bool doit)
1490 {
1491 #if wxUSE_ON_FATAL_EXCEPTION
1492     // assume this can only be called from the main thread
1493     gs_handleExceptions = doit;
1494
1495     return TRUE;
1496 #else
1497     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to sue this function"));
1498
1499         (void)doit;
1500     return FALSE;
1501 #endif
1502 }
1503
1504 //-----------------------------------------------------------------------------
1505 // wxWakeUpIdle
1506 //-----------------------------------------------------------------------------
1507
1508 void wxWakeUpIdle()
1509 {
1510     // Send the top window a dummy message so idle handler processing will
1511     // start up again.  Doing it this way ensures that the idle handler
1512     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1513     // the same for the main app thread only)
1514     wxWindow *topWindow = wxTheApp->GetTopWindow();
1515     if ( topWindow )
1516     {
1517         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1518         {
1519             // should never happen
1520             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1521         }
1522     }
1523 }
1524
1525 //-----------------------------------------------------------------------------
1526
1527 wxIcon
1528 wxApp::GetStdIcon(int which) const
1529 {
1530     switch(which)
1531     {
1532         case wxICON_INFORMATION:
1533             return wxIcon("wxICON_INFO");
1534
1535         case wxICON_QUESTION:
1536             return wxIcon("wxICON_QUESTION");
1537
1538         case wxICON_EXCLAMATION:
1539             return wxIcon("wxICON_WARNING");
1540
1541         default:
1542             wxFAIL_MSG(wxT("requested non existent standard icon"));
1543             // still fall through
1544
1545         case wxICON_HAND:
1546             return wxIcon("wxICON_ERROR");
1547     }
1548 }
1549
1550 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1551 // if in a separate file. So include it here to ensure it's linked.
1552 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1553 #include "main.cpp"
1554 #endif