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 && !defined(__MINGW32__)
 119     #include <shlwapi.h>
 120 #endif
 121
 122 // ---------------------------------------------------------------------------
 123 // global variables
 124 // ---------------------------------------------------------------------------
 125
 126 extern wxChar *wxBuffer;
 127 extern wxList *wxWinHandleList;
 128 extern wxList WXDLLEXPORT wxPendingDelete;
 129 #ifndef __WXMICROWIN__
 130 extern void wxSetKeyboardHook(bool doIt);
 131 #endif
 132
 133 MSG s_currentMsg;
 134 wxApp *wxTheApp = NULL;
 135
 136 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 137 //     with NR suffix - wxWindow::MSWCreate() supposes this
 138 const wxChar *wxFrameClassName         = wxT("wxFrameClass");
 139 const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
 140 const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
 141 const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
 142 const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
 143 const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
 144 const wxChar *wxPanelClassName         = wxT("wxPanelClass");
 145 const wxChar *wxPanelClassNameNR       = wxT("wxPanelClassNR");
 146 const wxChar *wxCanvasClassName        = wxT("wxCanvasClass");
 147 const wxChar *wxCanvasClassNameNR      = wxT("wxCanvasClassNR");
 148
 149 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 150 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 151 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 152
 153 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 154 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 155 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 156
 157 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 158
 159 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 160
 161 // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it
 162 //       needs compiler support for Win32 SEH. Others (especially Borland)
 163 //       probably have it too, but I'm not sure about how it works
 164 // JACS: get 'Cannot use __try in functions that require unwinding
 165 // in Unicode mode, so disabling.
 166 #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE)
 167     #undef wxUSE_ON_FATAL_EXCEPTION
 168     #define wxUSE_ON_FATAL_EXCEPTION 0
 169 #endif // VC++
 170
 171 #if wxUSE_ON_FATAL_EXCEPTION
 172     static bool gs_handleExceptions = FALSE;
 173 #endif
 174
 175 // ===========================================================================
 176 // implementation
 177 // ===========================================================================
 178
 179 // ---------------------------------------------------------------------------
 180 // wxApp
 181 // ---------------------------------------------------------------------------
 182
 183 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 184
 185 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 186     EVT_IDLE(wxApp::OnIdle)
 187     EVT_END_SESSION(wxApp::OnEndSession)
 188     EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 189 END_EVENT_TABLE()
 190
 191 //// Initialize
 192 bool wxApp::Initialize()
 193 {
 194     // the first thing to do is to check if we're trying to run an Unicode
 195     // program under Win9x - if so, abort right now as it has no chance to
 196     // work
 197 #if wxUSE_UNICODE
 198     if ( wxGetOsVersion() != wxWINDOWS_NT )
 199     {
 200         // note that we can use MessageBoxW() as it's implemented even under
 201         // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
 202         // used by wxLocale are not
 203         ::MessageBox
 204         (
 205          NULL,
 206          _T("This program uses Unicode and requires Windows NT/2000.\nProgram aborted."),
 207          _T("wxWindows Fatal Error"),
 208          MB_ICONERROR | MB_OK
 209         );
 210
 211         return FALSE;
 212     }
 213 #endif // wxUSE_UNICODE
 214
 215     // Some people may wish to use this, but
 216     // probably it shouldn't be here by default.
 217 #ifdef __WXDEBUG__
 218     //    wxRedirectIOToConsole();
 219 #endif
 220
 221     wxBuffer = new wxChar[1500]; // FIXME
 222
 223     wxClassInfo::InitializeClasses();
 224
 225 #if wxUSE_THREADS
 226     wxPendingEventsLocker = new wxCriticalSection;
 227 #endif
 228
 229     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 230     wxTheColourDatabase->Initialize();
 231
 232     wxInitializeStockLists();
 233     wxInitializeStockObjects();
 234
 235 #if wxUSE_WX_RESOURCES
 236     wxInitializeResourceSystem();
 237 #endif
 238
 239     wxBitmap::InitStandardHandlers();
 240
 241 #if defined(__WIN95__) && !defined(__WXMICROWIN__)
 242     InitCommonControls();
 243 #endif // __WIN95__
 244
 245 #if wxUSE_OLE || wxUSE_DRAG_AND_DROP
 246
 247 #ifdef __WIN16__
 248     // for OLE, enlarge message queue to be as large as possible
 249     int iMsg = 96;
 250     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 251         ;
 252 #endif // Win16
 253
 254     // we need to initialize OLE library
 255     if ( FAILED(::OleInitialize(NULL)) )
 256         wxLogError(_("Cannot initialize OLE"));
 257
 258 #endif // wxUSE_OLE
 259
 260 #if wxUSE_CTL3D
 261     if (!Ctl3dRegister(wxhInstance))
 262         wxLogError(wxT("Cannot register CTL3D"));
 263
 264     Ctl3dAutoSubclass(wxhInstance);
 265 #endif // wxUSE_CTL3D
 266
 267     // VZ: these icons are not in wx.rc anyhow (but should they?)!
 268 #if 0
 269     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 270     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 271     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 272
 273     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 274     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 275     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 276 #endif // 0
 277
 278     RegisterWindowClasses();
 279
 280 #ifndef __WXMICROWIN__
 281     // Create the brush for disabling bitmap buttons
 282
 283     LOGBRUSH lb;
 284     lb.lbStyle = BS_PATTERN;
 285     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 286     if ( lb.lbHatch )
 287     {
 288         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 289         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 290     }
 291     //else: wxWindows resources are probably not linked in
 292 #endif
 293
 294 #if wxUSE_PENWINDOWS
 295     wxRegisterPenWin();
 296 #endif
 297
 298     wxWinHandleList = new wxList(wxKEY_INTEGER);
 299
 300     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 301     // PLEASE DO NOT ALTER THIS.
 302 #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 303     extern char wxDummyChar;
 304     if (wxDummyChar) wxDummyChar++;
 305 #endif
 306
 307 #ifndef __WXMICROWIN__
 308     wxSetKeyboardHook(TRUE);
 309 #endif
 310
 311     wxModule::RegisterModules();
 312     if (!wxModule::InitializeModules())
 313         return FALSE;
 314     return TRUE;
 315 }
 316
 317 // ---------------------------------------------------------------------------
 318 // RegisterWindowClasses
 319 // ---------------------------------------------------------------------------
 320
 321 // TODO we should only register classes really used by the app. For this it
 322 //      would be enough to just delay the class registration until an attempt
 323 //      to create a window of this class is made.
 324 bool wxApp::RegisterWindowClasses()
 325 {
 326     WNDCLASS wndclass;
 327
 328     // for each class we register one with CS_(V|H)REDRAW style and one
 329     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 330     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 331     static const long styleNoRedraw = CS_DBLCLKS;
 332
 333     // the fields which are common to all classes
 334     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 335     wndclass.cbClsExtra    = 0;
 336     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 337     wndclass.hInstance     = wxhInstance;
 338     wndclass.hIcon         = (HICON) NULL;
 339     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 340     wndclass.lpszMenuName  = NULL;
 341
 342     // Register the frame window class.
 343     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 344     wndclass.lpszClassName = wxFrameClassName;
 345     wndclass.style         = styleNormal;
 346
 347     if ( !RegisterClass(&wndclass) )
 348     {
 349         wxLogLastError(wxT("RegisterClass(frame)"));
 350
 351         return FALSE;
 352     }
 353
 354     // "no redraw" frame
 355     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 356     wndclass.style         = styleNoRedraw;
 357
 358     if ( !RegisterClass(&wndclass) )
 359     {
 360         wxLogLastError(wxT("RegisterClass(no redraw frame)"));
 361
 362         return FALSE;
 363     }
 364
 365     // Register the MDI frame window class.
 366     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 367     wndclass.lpszClassName = wxMDIFrameClassName;
 368     wndclass.style         = styleNormal;
 369
 370     if ( !RegisterClass(&wndclass) )
 371     {
 372         wxLogLastError(wxT("RegisterClass(MDI parent)"));
 373
 374         return FALSE;
 375     }
 376
 377     // "no redraw" MDI frame
 378     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 379     wndclass.style         = styleNoRedraw;
 380
 381     if ( !RegisterClass(&wndclass) )
 382     {
 383         wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)"));
 384
 385         return FALSE;
 386     }
 387
 388     // Register the MDI child frame window class.
 389     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 390     wndclass.lpszClassName = wxMDIChildFrameClassName;
 391     wndclass.style         = styleNormal;
 392
 393     if ( !RegisterClass(&wndclass) )
 394     {
 395         wxLogLastError(wxT("RegisterClass(MDI child)"));
 396
 397         return FALSE;
 398     }
 399
 400     // "no redraw" MDI child frame
 401     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 402     wndclass.style         = styleNoRedraw;
 403
 404     if ( !RegisterClass(&wndclass) )
 405     {
 406         wxLogLastError(wxT("RegisterClass(no redraw MDI child)"));
 407
 408         return FALSE;
 409     }
 410
 411     // Register the panel window class.
 412     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 413     wndclass.lpszClassName = wxPanelClassName;
 414     wndclass.style         = styleNormal;
 415
 416     if ( !RegisterClass(&wndclass) )
 417     {
 418         wxLogLastError(wxT("RegisterClass(panel)"));
 419
 420         return FALSE;
 421     }
 422
 423     // Register the no redraw panel window class.
 424     wndclass.lpszClassName = wxPanelClassNameNR;
 425     wndclass.style         = styleNoRedraw;
 426
 427     if ( !RegisterClass(&wndclass) )
 428     {
 429         wxLogLastError(wxT("RegisterClass(no redraw panel)"));
 430
 431         return FALSE;
 432     }
 433
 434     // Register the canvas and textsubwindow class name
 435     wndclass.hbrBackground = (HBRUSH)NULL;
 436     wndclass.lpszClassName = wxCanvasClassName;
 437
 438     if ( !RegisterClass(&wndclass) )
 439     {
 440         wxLogLastError(wxT("RegisterClass(canvas)"));
 441
 442         return FALSE;
 443     }
 444
 445     wndclass.lpszClassName = wxCanvasClassNameNR;
 446     wndclass.style         = styleNoRedraw;
 447     if ( !RegisterClass(&wndclass) )
 448     {
 449         wxLogLastError(wxT("RegisterClass(no redraw canvas)"));
 450
 451         return FALSE;
 452     }
 453
 454     return TRUE;
 455 }
 456
 457 // ---------------------------------------------------------------------------
 458 // UnregisterWindowClasses
 459 // ---------------------------------------------------------------------------
 460
 461 bool wxApp::UnregisterWindowClasses()
 462 {
 463     bool retval = TRUE;
 464
 465     // frame window class.
 466     if ( !UnregisterClass(wxFrameClassName, wxhInstance) )
 467     {
 468         wxLogLastError(wxT("UnregisterClass(frame)"));
 469
 470         retval = FALSE;
 471     }
 472
 473     // "no redraw" frame
 474     if ( !UnregisterClass(wxFrameClassNameNoRedraw, wxhInstance) )
 475     {
 476         wxLogLastError(wxT("UnregisterClass(no redraw frame)"));
 477
 478         return FALSE;
 479     }
 480
 481     // MDI frame window class.
 482     if ( !UnregisterClass(wxMDIFrameClassName, wxhInstance) )
 483     {
 484         wxLogLastError(wxT("UnregisterClass(MDI parent)"));
 485
 486         retval = FALSE;
 487     }
 488
 489     // "no redraw" MDI frame
 490     if ( !UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) )
 491     {
 492         wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)"));
 493
 494         retval = FALSE;
 495     }
 496
 497     // MDI child frame window class.
 498     if ( !UnregisterClass(wxMDIChildFrameClassName, wxhInstance) )
 499     {
 500         wxLogLastError(wxT("UnregisterClass(MDI child)"));
 501
 502         retval = FALSE;
 503     }
 504
 505     // "no redraw" MDI child frame
 506     if ( !UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) )
 507     {
 508         wxLogLastError(wxT("UnregisterClass(no redraw MDI child)"));
 509
 510         retval = FALSE;
 511     }
 512
 513     // panel window class.
 514     if ( !UnregisterClass(wxPanelClassName, wxhInstance) )
 515     {
 516         wxLogLastError(wxT("UnregisterClass(panel)"));
 517
 518         retval = FALSE;
 519     }
 520
 521     // no redraw panel window class.
 522     if ( !UnregisterClass(wxPanelClassNameNR, wxhInstance) )
 523     {
 524         wxLogLastError(wxT("UnregisterClass(no redraw panel)"));
 525
 526         retval = FALSE;
 527     }
 528
 529     // canvas and textsubwindow class name
 530     if ( !UnregisterClass(wxCanvasClassName, wxhInstance) )
 531     {
 532         wxLogLastError(wxT("UnregisterClass(canvas)"));
 533
 534         retval = FALSE;
 535     }
 536
 537     if ( !UnregisterClass(wxCanvasClassNameNR, wxhInstance) )
 538     {
 539         wxLogLastError(wxT("UnregisterClass(no redraw canvas)"));
 540
 541         retval = FALSE;
 542     }
 543
 544     return retval;
 545 }
 546
 547 // ---------------------------------------------------------------------------
 548 // Convert Windows to argc, argv style
 549 // ---------------------------------------------------------------------------
 550
 551 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 552 {
 553     wxStringList args;
 554
 555     wxString cmdLine(lpCmdLine);
 556     int count = 0;
 557
 558     // Get application name
 559     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 560     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 561
 562     args.Add(name);
 563     count++;
 564
 565     wxStrcpy(name, wxFileNameFromPath(name));
 566     wxStripExtension(name);
 567     wxTheApp->SetAppName(name);
 568
 569     // Break up string
 570     // Treat strings enclosed in double-quotes as single arguments
 571     int i = 0;
 572     int len = cmdLine.Length();
 573     while (i < len)
 574     {
 575         // Skip whitespace
 576         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 577             i ++;
 578
 579         if (i < len)
 580         {
 581             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 582             {
 583                 i ++;
 584                 int first = i;
 585                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 586                     i ++;
 587
 588                 wxString arg(cmdLine.Mid(first, (i - first)));
 589
 590                 args.Add(arg);
 591                 count ++;
 592
 593                 if (i < len)
 594                     i ++; // Skip past 2nd quote
 595             }
 596             else // Unquoted argument
 597             {
 598                 int first = i;
 599                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 600                     i ++;
 601
 602                 wxString arg(cmdLine.Mid(first, (i - first)));
 603
 604                 args.Add(arg);
 605                 count ++;
 606             }
 607         }
 608     }
 609
 610     wxTheApp->argv = new wxChar*[count + 1];
 611     for (i = 0; i < count; i++)
 612     {
 613         wxString arg(args[i]);
 614         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 615     }
 616     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 617     wxTheApp->argc = count;
 618 }
 619
 620 //// Cleans up any wxWindows internal structures left lying around
 621
 622 void wxApp::CleanUp()
 623 {
 624     //// COMMON CLEANUP
 625
 626 #if wxUSE_LOG
 627     // flush the logged messages if any and install a 'safer' log target: the
 628     // default one (wxLogGui) can't be used after the resources are freed just
 629     // below and the user suppliedo ne might be even more unsafe (using any
 630     // wxWindows GUI function is unsafe starting from now)
 631     wxLog::DontCreateOnDemand();
 632
 633     // this will flush the old messages if any
 634     delete wxLog::SetActiveTarget(new wxLogStderr);
 635 #endif // wxUSE_LOG
 636
 637     // One last chance for pending objects to be cleaned up
 638     wxTheApp->DeletePendingObjects();
 639
 640     wxModule::CleanUpModules();
 641
 642 #if wxUSE_WX_RESOURCES
 643     wxCleanUpResourceSystem();
 644
 645     //  wxDefaultResourceTable->ClearTable();
 646 #endif
 647
 648     wxDeleteStockObjects();
 649
 650     // Destroy all GDI lists, etc.
 651     wxDeleteStockLists();
 652
 653     delete wxTheColourDatabase;
 654     wxTheColourDatabase = NULL;
 655
 656     wxBitmap::CleanUpHandlers();
 657
 658     delete[] wxBuffer;
 659     wxBuffer = NULL;
 660
 661     //// WINDOWS-SPECIFIC CLEANUP
 662
 663 #ifndef __WXMICROWIN__
 664     wxSetKeyboardHook(FALSE);
 665 #endif
 666
 667 #if wxUSE_PENWINDOWS
 668     wxCleanUpPenWin();
 669 #endif
 670
 671     if (wxSTD_FRAME_ICON)
 672         DestroyIcon(wxSTD_FRAME_ICON);
 673     if (wxSTD_MDICHILDFRAME_ICON)
 674         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 675     if (wxSTD_MDIPARENTFRAME_ICON)
 676         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 677
 678     if (wxDEFAULT_FRAME_ICON)
 679         DestroyIcon(wxDEFAULT_FRAME_ICON);
 680     if (wxDEFAULT_MDICHILDFRAME_ICON)
 681         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 682     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 683         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 684
 685     if ( wxDisableButtonBrush )
 686         ::DeleteObject( wxDisableButtonBrush );
 687
 688 #if wxUSE_OLE
 689     ::OleUninitialize();
 690 #endif
 691
 692 #ifdef WXMAKINGDLL
 693     // for an EXE the classes are unregistered when it terminates but DLL may
 694     // be loaded several times (load/unload/load) into the same process in
 695     // which case the registration will fail after the first time if we don't
 696     // unregister the classes now
 697     UnregisterWindowClasses();
 698 #endif // WXMAKINGDLL
 699
 700 #if wxUSE_CTL3D
 701     Ctl3dUnregister(wxhInstance);
 702 #endif
 703
 704     if (wxWinHandleList)
 705         delete wxWinHandleList;
 706
 707     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 708     // create a module for that as it's part of the core.
 709     delete wxPendingEvents;
 710
 711 #if wxUSE_THREADS
 712     delete wxPendingEventsLocker;
 713     // If we don't do the following, we get an apparent memory leak
 714 #if wxUSE_VALIDATORS
 715     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 716 #endif // wxUSE_VALIDATORS
 717 #endif // wxUSE_THREADS
 718
 719     wxClassInfo::CleanUpClasses();
 720
 721     delete wxTheApp;
 722     wxTheApp = NULL;
 723
 724 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 725     // At this point we want to check if there are any memory
 726     // blocks that aren't part of the wxDebugContext itself,
 727     // as a special case. Then when dumping we need to ignore
 728     // wxDebugContext, too.
 729     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 730     {
 731         wxLogMessage(wxT("There were memory leaks."));
 732         wxDebugContext::Dump();
 733         wxDebugContext::PrintStatistics();
 734     }
 735     //  wxDebugContext::SetStream(NULL, NULL);
 736 #endif
 737
 738 #if wxUSE_LOG
 739     // do it as the very last thing because everything else can log messages
 740     delete wxLog::SetActiveTarget(NULL);
 741 #endif // wxUSE_LOG
 742 }
 743
 744 //----------------------------------------------------------------------
 745 // Entry point helpers, used by wxPython
 746 //----------------------------------------------------------------------
 747
 748 int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) )
 749 {
 750     return wxApp::Initialize();
 751 }
 752
 753 int WXDLLEXPORT wxEntryInitGui()
 754 {
 755     return wxTheApp->OnInitGui();
 756 }
 757
 758 void WXDLLEXPORT wxEntryCleanup()
 759 {
 760     wxApp::CleanUp();
 761 }
 762
 763
 764 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 765
 766 // temporarily disable this warning which would be generated in release builds
 767 // because of __try
 768 #ifdef __VISUALC__
 769     #pragma warning(disable: 4715) // not all control paths return a value
 770 #endif // Visual C++
 771
 772 //----------------------------------------------------------------------
 773 // Main wxWindows entry point
 774 //----------------------------------------------------------------------
 775 int wxEntry(WXHINSTANCE hInstance,
 776             WXHINSTANCE WXUNUSED(hPrevInstance),
 777             char *lpCmdLine,
 778             int nCmdShow,
 779             bool enterLoop)
 780 {
 781     // do check for memory leaks on program exit
 782     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 783     //  deallocated memory which may be used to simulate low-memory condition)
 784 #ifndef __WXMICROWIN__
 785     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 786 #endif
 787
 788 #ifdef __MWERKS__
 789 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 790     // This seems to be necessary since there are 'rogue'
 791     // objects present at this point (perhaps global objects?)
 792     // Setting a checkpoint will ignore them as far as the
 793     // memory checking facility is concerned.
 794     // Of course you may argue that memory allocated in globals should be
 795     // checked, but this is a reasonable compromise.
 796     wxDebugContext::SetCheckpoint();
 797 #endif
 798 #endif
 799
 800     // take everything into a try-except block to be able to call
 801     // OnFatalException() if necessary
 802 #if wxUSE_ON_FATAL_EXCEPTION
 803     __try {
 804 #endif
 805         wxhInstance = (HINSTANCE) hInstance;
 806
 807         if (!wxEntryStart(0,0))
 808             return 0;
 809
 810         // create the application object or ensure that one already exists
 811         if (!wxTheApp)
 812         {
 813             // The app may have declared a global application object, but we recommend
 814             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 815             // function for delayed, dynamic app object construction.
 816             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 817                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 818
 819             wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
 820         }
 821
 822         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 823
 824         // save the WinMain() parameters
 825         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 826         wxTheApp->m_nCmdShow = nCmdShow;
 827
 828         // We really don't want timestamps by default, because it means
 829         // we can't simply double-click on the error message and get to that
 830         // line in the source. So VC++ at least, let's have a sensible default.
 831 #ifdef __VISUALC__
 832         wxLog::SetTimestamp(NULL);
 833 #endif
 834
 835         int retValue = 0;
 836
 837         // it is common to create a modal dialog in OnInit() (to ask/notify the
 838         // user about something) but it wouldn't work if we don't change the
 839         // "exit on delete last frame" flag here as when this dialog is
 840         // deleted, the app would terminate (it was the last top level window
 841         // as the main frame wasn't created yet!), so disable this behaviour
 842         // temproarily
 843         bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
 844         wxTheApp->SetExitOnFrameDelete(FALSE);
 845
 846         // init the app
 847         retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
 848
 849         // restore the old flag value
 850         wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
 851
 852         if ( retValue == 0 )
 853         {
 854             if ( enterLoop )
 855             {
 856                 // run the main loop
 857                 retValue = wxTheApp->OnRun();
 858             }
 859             else
 860             {
 861                 // we want to initialize, but not run or exit immediately.
 862                 return 1;
 863             }
 864         }
 865         //else: app initialization failed, so we skipped OnRun()
 866
 867         wxWindow *topWindow = wxTheApp->GetTopWindow();
 868         if ( topWindow )
 869         {
 870             // Forcibly delete the window.
 871             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 872                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 873             {
 874                 topWindow->Close(TRUE);
 875                 wxTheApp->DeletePendingObjects();
 876             }
 877             else
 878             {
 879                 delete topWindow;
 880                 wxTheApp->SetTopWindow(NULL);
 881             }
 882         }
 883
 884         wxTheApp->OnExit();
 885
 886         wxEntryCleanup();
 887
 888         return retValue;
 889
 890 #if wxUSE_ON_FATAL_EXCEPTION
 891     }
 892     __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER
 893                                    : EXCEPTION_CONTINUE_SEARCH ) {
 894         if ( wxTheApp )
 895         {
 896            // give the user a chance to do something special about this
 897            wxTheApp->OnFatalException();
 898         }
 899
 900         ::ExitProcess(3); // the same exit code as abort()
 901
 902         // NOTREACHED
 903     }
 904 #endif // wxUSE_ON_FATAL_EXCEPTION
 905 }
 906
 907 // restore warning state
 908 #ifdef __VISUALC__
 909     #pragma warning(default: 4715) // not all control paths return a value
 910 #endif // Visual C++
 911
 912 #else /*  _WINDLL  */
 913
 914 //----------------------------------------------------------------------
 915 // Entry point for wxWindows + the App in a DLL
 916 //----------------------------------------------------------------------
 917
 918 int wxEntry(WXHINSTANCE hInstance)
 919 {
 920     wxhInstance = (HINSTANCE) hInstance;
 921     wxEntryStart(0, 0);
 922
 923     // The app may have declared a global application object, but we recommend
 924     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 925     // for delayed, dynamic app object construction.
 926     if (!wxTheApp)
 927     {
 928         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 929                      "No initializer - use IMPLEMENT_APP macro." );
 930
 931         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 932     }
 933
 934     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 935
 936     wxTheApp->argc = 0;
 937     wxTheApp->argv = NULL;
 938
 939     wxEntryInitGui();
 940
 941     wxTheApp->OnInit();
 942
 943     wxWindow *topWindow = wxTheApp->GetTopWindow();
 944     if ( topWindow && topWindow->GetHWND())
 945     {
 946         topWindow->Show(TRUE);
 947     }
 948
 949     return 1;
 950 }
 951 #endif // _WINDLL
 952
 953 //// Static member initialization
 954
 955 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 956
 957 wxApp::wxApp()
 958 {
 959     argc = 0;
 960     argv = NULL;
 961     m_printMode = wxPRINT_WINDOWS;
 962     m_auto3D = TRUE;
 963 }
 964
 965 wxApp::~wxApp()
 966 {
 967     // Delete command-line args
 968     int i;
 969     for (i = 0; i < argc; i++)
 970     {
 971         delete[] argv[i];
 972     }
 973     delete[] argv;
 974 }
 975
 976 bool wxApp::Initialized()
 977 {
 978 #ifndef _WINDLL
 979     if (GetTopWindow())
 980         return TRUE;
 981     else
 982         return FALSE;
 983 #else // Assume initialized if DLL (no way of telling)
 984     return TRUE;
 985 #endif
 986 }
 987
 988 /*
 989  * Get and process a message, returning FALSE if WM_QUIT
 990  * received (and also set the flag telling the app to exit the main loop)
 991  *
 992  */
 993 bool wxApp::DoMessage()
 994 {
 995     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 996     if ( rc == 0 )
 997     {
 998         // got WM_QUIT
 999         m_keepGoing = FALSE;
1000
1001         return FALSE;
1002     }
1003     else if ( rc == -1 )
1004     {
1005         // should never happen, but let's test for it nevertheless
1006         wxLogLastError(wxT("GetMessage"));
1007     }
1008     else
1009     {
1010 #if wxUSE_THREADS
1011         wxASSERT_MSG( wxThread::IsMain(),
1012                       wxT("only the main thread can process Windows messages") );
1013
1014         static bool s_hadGuiLock = TRUE;
1015         static wxMsgArray s_aSavedMessages;
1016
1017         // if a secondary thread owns is doing GUI calls, save all messages for
1018         // later processing - we can't process them right now because it will
1019         // lead to recursive library calls (and we're not reentrant)
1020         if ( !wxGuiOwnedByMainThread() )
1021         {
1022             s_hadGuiLock = FALSE;
1023
1024             // leave out WM_COMMAND messages: too dangerous, sometimes
1025             // the message will be processed twice
1026             if ( !wxIsWaitingForThread() ||
1027                     s_currentMsg.message != WM_COMMAND )
1028             {
1029                 s_aSavedMessages.Add(s_currentMsg);
1030             }
1031
1032             return TRUE;
1033         }
1034         else
1035         {
1036             // have we just regained the GUI lock? if so, post all of the saved
1037             // messages
1038             //
1039             // FIXME of course, it's not _exactly_ the same as processing the
1040             //       messages normally - expect some things to break...
1041             if ( !s_hadGuiLock )
1042             {
1043                 s_hadGuiLock = TRUE;
1044
1045                 size_t count = s_aSavedMessages.Count();
1046                 for ( size_t n = 0; n < count; n++ )
1047                 {
1048                     MSG& msg = s_aSavedMessages[n];
1049
1050                     if ( !ProcessMessage((WXMSG *)&msg) )
1051                     {
1052                         ::TranslateMessage(&msg);
1053                         ::DispatchMessage(&msg);
1054                     }
1055                 }
1056
1057                 s_aSavedMessages.Empty();
1058             }
1059         }
1060 #endif // wxUSE_THREADS
1061
1062         // Process the message
1063         DoMessage((WXMSG *)&s_currentMsg);
1064     }
1065
1066     return TRUE;
1067 }
1068
1069 void wxApp::DoMessage(WXMSG *pMsg)
1070 {
1071     if ( !ProcessMessage(pMsg) )
1072     {
1073         ::TranslateMessage((MSG *)pMsg);
1074         ::DispatchMessage((MSG *)pMsg);
1075     }
1076 }
1077
1078 /*
1079  * Keep trying to process messages until WM_QUIT
1080  * received.
1081  *
1082  * If there are messages to be processed, they will all be
1083  * processed and OnIdle will not be called.
1084  * When there are no more messages, OnIdle is called.
1085  * If OnIdle requests more time,
1086  * it will be repeatedly called so long as there are no pending messages.
1087  * A 'feature' of this is that once OnIdle has decided that no more processing
1088  * is required, then it won't get processing time until further messages
1089  * are processed (it'll sit in DoMessage).
1090  */
1091
1092 int wxApp::MainLoop()
1093 {
1094     m_keepGoing = TRUE;
1095
1096     while ( m_keepGoing )
1097     {
1098 #if wxUSE_THREADS
1099         wxMutexGuiLeaveOrEnter();
1100 #endif // wxUSE_THREADS
1101
1102         while ( !Pending() && ProcessIdle() )
1103             ;
1104
1105         // a message came or no more idle processing to do
1106         DoMessage();
1107     }
1108
1109     return s_currentMsg.wParam;
1110 }
1111
1112 // Returns TRUE if more time is needed.
1113 bool wxApp::ProcessIdle()
1114 {
1115     wxIdleEvent event;
1116     event.SetEventObject(this);
1117     ProcessEvent(event);
1118
1119     return event.MoreRequested();
1120 }
1121
1122 void wxApp::ExitMainLoop()
1123 {
1124     // VZ: why not ::PostQuitMessage()?
1125     m_keepGoing = FALSE;
1126 }
1127
1128 bool wxApp::Pending()
1129 {
1130     return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0;
1131 }
1132
1133 void wxApp::Dispatch()
1134 {
1135     DoMessage();
1136 }
1137
1138 /*
1139  * Give all windows a chance to preprocess
1140  * the message. Some may have accelerator tables, or have
1141  * MDI complications.
1142  */
1143
1144 bool wxApp::ProcessMessage(WXMSG *wxmsg)
1145 {
1146     MSG *msg = (MSG *)wxmsg;
1147     HWND hwnd = msg->hwnd;
1148     wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd);
1149
1150     // this may happen if the event occured in a standard modeless dialog (the
1151     // only example of which I know of is the find/replace dialog) - then call
1152     // IsDialogMessage() to make TAB navigation in it work
1153     if ( !wndThis )
1154     {
1155         // we need to find the dialog containing this control as
1156         // IsDialogMessage() just eats all the messages (i.e. returns TRUE for
1157         // them) if we call it for the control itself
1158         while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD )
1159         {
1160             hwnd = ::GetParent(hwnd);
1161         }
1162
1163         return hwnd && ::IsDialogMessage(hwnd, msg) != 0;
1164     }
1165
1166 #if wxUSE_TOOLTIPS
1167     // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
1168     // popup the tooltip bubbles
1169     if ( (msg->message == WM_MOUSEMOVE) )
1170     {
1171         wxToolTip *tt = wndThis->GetToolTip();
1172         if ( tt )
1173         {
1174             tt->RelayEvent(wxmsg);
1175         }
1176     }
1177 #endif // wxUSE_TOOLTIPS
1178
1179     // allow the window to prevent certain messages from being
1180     // translated/processed (this is currently used by wxTextCtrl to always
1181     // grab Ctrl-C/V/X, even if they are also accelerators in some parent)
1182     if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) )
1183     {
1184         return FALSE;
1185     }
1186
1187     // try translations first: the accelerators override everything
1188     wxWindow *wnd;
1189
1190     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
1191     {
1192         if ( wnd->MSWTranslateMessage(wxmsg))
1193             return TRUE;
1194
1195         // stop at first top level window, i.e. don't try to process the key
1196         // strokes originating in a dialog using the accelerators of the parent
1197         // frame - this doesn't make much sense
1198         if ( wnd->IsTopLevel() )
1199             break;
1200     }
1201
1202     // now try the other hooks (kbd navigation is handled here): we start from
1203     // wndThis->GetParent() because wndThis->MSWProcessMessage() was already
1204     // called above
1205     for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() )
1206     {
1207         if ( wnd->MSWProcessMessage(wxmsg) )
1208             return TRUE;
1209     }
1210
1211     // no special preprocessing for this message, dispatch it normally
1212     return FALSE;
1213 }
1214
1215 void wxApp::OnIdle(wxIdleEvent& event)
1216 {
1217     static bool s_inOnIdle = FALSE;
1218
1219     // Avoid recursion (via ProcessEvent default case)
1220     if ( s_inOnIdle )
1221         return;
1222
1223     s_inOnIdle = TRUE;
1224
1225     // If there are pending events, we must process them: pending events
1226     // are either events to the threads other than main or events posted
1227     // with wxPostEvent() functions
1228     // GRG: I have moved this here so that all pending events are processed
1229     //   before starting to delete any objects. This behaves better (in
1230     //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
1231     //   behaviour. Changed Feb/2000 before 2.1.14
1232     ProcessPendingEvents();
1233
1234     // 'Garbage' collection of windows deleted with Close().
1235     DeletePendingObjects();
1236
1237 #if wxUSE_LOG
1238     // flush the logged messages if any
1239     wxLog::FlushActive();
1240 #endif // wxUSE_LOG
1241
1242 #if wxUSE_DC_CACHEING
1243     // automated DC cache management: clear the cached DCs and bitmap
1244     // if it's likely that the app has finished with them, that is, we
1245     // get an idle event and we're not dragging anything.
1246     if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON))
1247         wxDC::ClearCache();
1248 #endif // wxUSE_DC_CACHEING
1249
1250     // Send OnIdle events to all windows
1251     if ( SendIdleEvents() )
1252     {
1253         // SendIdleEvents() returns TRUE if at least one window requested more
1254         // idle events
1255         event.RequestMore(TRUE);
1256     }
1257
1258     s_inOnIdle = FALSE;
1259 }
1260
1261 // Send idle event to all top-level windows
1262 bool wxApp::SendIdleEvents()
1263 {
1264     bool needMore = FALSE;
1265
1266     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1267     while (node)
1268     {
1269         wxWindow* win = node->GetData();
1270         if (SendIdleEvents(win))
1271             needMore = TRUE;
1272         node = node->GetNext();
1273     }
1274
1275     return needMore;
1276 }
1277
1278 // Send idle event to window and all subwindows
1279 bool wxApp::SendIdleEvents(wxWindow* win)
1280 {
1281     bool needMore = FALSE;
1282
1283     wxIdleEvent event;
1284     event.SetEventObject(win);
1285     win->GetEventHandler()->ProcessEvent(event);
1286
1287     if (event.MoreRequested())
1288         needMore = TRUE;
1289
1290     wxNode* node = win->GetChildren().First();
1291     while (node)
1292     {
1293         wxWindow* win = (wxWindow*) node->Data();
1294         if (SendIdleEvents(win))
1295             needMore = TRUE;
1296
1297         node = node->Next();
1298     }
1299     return needMore;
1300 }
1301
1302 void wxApp::DeletePendingObjects()
1303 {
1304     wxNode *node = wxPendingDelete.First();
1305     while (node)
1306     {
1307         wxObject *obj = (wxObject *)node->Data();
1308
1309         delete obj;
1310
1311         if (wxPendingDelete.Member(obj))
1312             delete node;
1313
1314         // Deleting one object may have deleted other pending
1315         // objects, so start from beginning of list again.
1316         node = wxPendingDelete.First();
1317     }
1318 }
1319
1320 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1321 {
1322     if (GetTopWindow())
1323         GetTopWindow()->Close(TRUE);
1324 }
1325
1326 // Default behaviour: close the application with prompts. The
1327 // user can veto the close, and therefore the end session.
1328 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1329 {
1330     if (GetTopWindow())
1331     {
1332         if (!GetTopWindow()->Close(!event.CanVeto()))
1333             event.Veto(TRUE);
1334     }
1335 }
1336
1337 /* static */
1338 int wxApp::GetComCtl32Version()
1339 {
1340 #ifdef __WXMICROWIN__
1341     return 0;
1342 #else
1343     // cache the result
1344     static int s_verComCtl32 = -1;
1345
1346     wxCRIT_SECT_DECLARE(csComCtl32);
1347     wxCRIT_SECT_LOCKER(lock, csComCtl32);
1348
1349     if ( s_verComCtl32 == -1 )
1350     {
1351         // initally assume no comctl32.dll at all
1352         s_verComCtl32 = 0;
1353
1354         // do we have it?
1355         HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
1356
1357         // if so, then we can check for the version
1358         if ( hModuleComCtl32 )
1359         {
1360             // try to use DllGetVersion() if available in _headers_
1361             #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
1362                 DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
1363                     ::GetProcAddress(hModuleComCtl32, "DllGetVersion");
1364                 if ( pfnDllGetVersion )
1365                 {
1366                     DLLVERSIONINFO dvi;
1367                     dvi.cbSize = sizeof(dvi);
1368
1369                     HRESULT hr = (*pfnDllGetVersion)(&dvi);
1370                     if ( FAILED(hr) )
1371                     {
1372                         wxLogApiError(_T("DllGetVersion"), hr);
1373                     }
1374                     else
1375                     {
1376                         // this is incompatible with _WIN32_IE values, but
1377                         // compatible with the other values returned by
1378                         // GetComCtl32Version()
1379                         s_verComCtl32 = 100*dvi.dwMajorVersion +
1380                                             dvi.dwMinorVersion;
1381                     }
1382                 }
1383             #endif
1384                 // DllGetVersion() unavailable either during compile or
1385                 // run-time, try to guess the version otherwise
1386                 if ( !s_verComCtl32 )
1387                 {
1388                     // InitCommonControlsEx is unique to 4.70 and later
1389                     FARPROC theProc = ::GetProcAddress
1390                                         (
1391                                          hModuleComCtl32,
1392                                          "InitCommonControlsEx"
1393                                         );
1394
1395                     if ( !theProc )
1396                     {
1397                         // not found, must be 4.00
1398                         s_verComCtl32 = 400;
1399                     }
1400                     else
1401                     {
1402                         // many symbols appeared in comctl32 4.71, could use
1403                         // any of them except may be DllInstall
1404                         theProc = ::GetProcAddress
1405                                     (
1406                                      hModuleComCtl32,
1407                                      "InitializeFlatSB"
1408                                     );
1409                         if ( !theProc )
1410                         {
1411                             // not found, must be 4.70
1412                             s_verComCtl32 = 470;
1413                         }
1414                         else
1415                         {
1416                             // found, must be 4.71
1417                             s_verComCtl32 = 471;
1418                         }
1419                     }
1420                 }
1421         }
1422     }
1423
1424     return s_verComCtl32;
1425 #endif
1426 }
1427
1428 void wxExit()
1429 {
1430     wxLogError(_("Fatal error: exiting"));
1431
1432     wxApp::CleanUp();
1433     exit(0);
1434 }
1435
1436 // Yield to incoming messages
1437
1438 static bool gs_inYield = FALSE;
1439
1440 bool wxYield()
1441 {
1442     // disable log flushing from here because a call to wxYield() shouldn't
1443     // normally result in message boxes popping up &c
1444     wxLog::Suspend();
1445
1446 #ifdef __WXDEBUG__
1447     if (gs_inYield)
1448         wxFAIL_MSG( wxT("wxYield called recursively" ) );
1449 #endif
1450
1451     gs_inYield = TRUE;
1452
1453     // we don't want to process WM_QUIT from here - it should be processed in
1454     // the main event loop in order to stop it
1455     MSG msg;
1456     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1457             msg.message != WM_QUIT )
1458     {
1459 #if wxUSE_THREADS
1460         wxMutexGuiLeaveOrEnter();
1461 #endif // wxUSE_THREADS
1462
1463         if ( !wxTheApp->DoMessage() )
1464             break;
1465     }
1466
1467     // If they are pending events, we must process them.
1468     if (wxTheApp)
1469         wxTheApp->ProcessPendingEvents();
1470
1471     // let the logs be flashed again
1472     wxLog::Resume();
1473
1474     gs_inYield = FALSE;
1475
1476     return TRUE;
1477 }
1478
1479 // Yield to incoming messages; but fail silently if recursion is detected.
1480 bool wxYieldIfNeeded()
1481 {
1482     if (gs_inYield)
1483         return FALSE;
1484
1485     return wxYield();
1486 }
1487
1488 bool wxHandleFatalExceptions(bool doit)
1489 {
1490 #if wxUSE_ON_FATAL_EXCEPTION
1491     // assume this can only be called from the main thread
1492     gs_handleExceptions = doit;
1493
1494     return TRUE;
1495 #else
1496     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to sue this function"));
1497
1498         (void)doit;
1499     return FALSE;
1500 #endif
1501 }
1502
1503 //-----------------------------------------------------------------------------
1504 // wxWakeUpIdle
1505 //-----------------------------------------------------------------------------
1506
1507 void wxWakeUpIdle()
1508 {
1509     // Send the top window a dummy message so idle handler processing will
1510     // start up again.  Doing it this way ensures that the idle handler
1511     // wakes up in the right thread (see also wxWakeUpMainThread() which does
1512     // the same for the main app thread only)
1513     wxWindow *topWindow = wxTheApp->GetTopWindow();
1514     if ( topWindow )
1515     {
1516         if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
1517         {
1518             // should never happen
1519             wxLogLastError(wxT("PostMessage(WM_NULL)"));
1520         }
1521     }
1522 }
1523
1524 //-----------------------------------------------------------------------------
1525
1526 wxIcon
1527 wxApp::GetStdIcon(int which) const
1528 {
1529     switch(which)
1530     {
1531         case wxICON_INFORMATION:
1532             return wxIcon("wxICON_INFO");
1533
1534         case wxICON_QUESTION:
1535             return wxIcon("wxICON_QUESTION");
1536
1537         case wxICON_EXCLAMATION:
1538             return wxIcon("wxICON_WARNING");
1539
1540         default:
1541             wxFAIL_MSG(wxT("requested non existent standard icon"));
1542             // still fall through
1543
1544         case wxICON_HAND:
1545             return wxIcon("wxICON_ERROR");
1546     }
1547 }
1548
1549 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1550 // if in a separate file. So include it here to ensure it's linked.
1551 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
1552 #include "main.cpp"
1553 #endif