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     #pragma implementation "appbase.h"
  23 #endif
  24
  25 // For compilers that support precompilation, includes "wx.h".
  26 #include "wx/wxprec.h"
  27
  28 #if defined(__BORLANDC__)
  29     #pragma hdrstop
  30 #endif
  31
  32 #ifndef WX_PRECOMP
  33     #include "wx/frame.h"
  34     #include "wx/app.h"
  35     #include "wx/utils.h"
  36     #include "wx/gdicmn.h"
  37     #include "wx/pen.h"
  38     #include "wx/brush.h"
  39     #include "wx/cursor.h"
  40     #include "wx/icon.h"
  41     #include "wx/palette.h"
  42     #include "wx/dc.h"
  43     #include "wx/dialog.h"
  44     #include "wx/msgdlg.h"
  45     #include "wx/intl.h"
  46     #include "wx/dynarray.h"
  47 #   include "wx/wxchar.h"
  48 #   include "wx/icon.h"
  49 #endif
  50
  51 #include "wx/log.h"
  52 #include "wx/module.h"
  53
  54 #include "wx/msw/private.h"
  55
  56 #if wxUSE_THREADS
  57     #include "wx/thread.h"
  58
  59     // define the array of MSG strutures
  60     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  61
  62     #include "wx/arrimpl.cpp"
  63
  64     WX_DEFINE_OBJARRAY(wxMsgArray);
  65 #endif // wxUSE_THREADS
  66
  67 #if wxUSE_WX_RESOURCES
  68     #include "wx/resource.h"
  69 #endif
  70
  71 // OLE is used for drag-and-drop, clipboard, OLE Automation...
  72 #if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
  73     #undef wxUSE_OLE
  74
  75     #define  wxUSE_OLE 0
  76 #endif // broken compilers
  77
  78 #if wxUSE_OLE
  79     #include <ole2.h>
  80 #endif
  81
  82 #include <string.h>
  83 #include <ctype.h>
  84
  85 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  86     #include <commctrl.h>
  87 #endif
  88
  89 #include "wx/msw/msvcrt.h"
  90
  91 // ---------------------------------------------------------------------------
  92 // global variables
  93 // ---------------------------------------------------------------------------
  94
  95 extern wxChar *wxBuffer;
  96 extern wxChar *wxOsVersion;
  97 extern wxList *wxWinHandleList;
  98 extern wxList WXDLLEXPORT wxPendingDelete;
  99 #if wxUSE_THREADS
 100 extern wxList *wxPendingEvents;
 101 extern wxCriticalSection *wxPendingEventsLocker;
 102 #endif
 103 extern void wxSetKeyboardHook(bool doIt);
 104 extern wxCursor *g_globalCursor;
 105
 106 HINSTANCE wxhInstance = 0;
 107 MSG s_currentMsg;
 108 wxApp *wxTheApp = NULL;
 109
 110 // FIXME why not const? and not static?
 111
 112 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 113 //     with NR suffix - wxWindow::MSWCreate() supposes this
 114 wxChar wxFrameClassName[]         = _T("wxFrameClass");
 115 wxChar wxFrameClassNameNoRedraw[] = _T("wxFrameClassNR");
 116 wxChar wxMDIFrameClassName[]      = _T("wxMDIFrameClass");
 117 wxChar wxMDIFrameClassNameNoRedraw[] = _T("wxMDIFrameClassNR");
 118 wxChar wxMDIChildFrameClassName[] = _T("wxMDIChildFrameClass");
 119 wxChar wxMDIChildFrameClassNameNoRedraw[] = _T("wxMDIChildFrameClassNR");
 120 wxChar wxPanelClassName[]         = _T("wxPanelClass");
 121 wxChar wxCanvasClassName[]        = _T("wxCanvasClass");
 122
 123 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 124 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 125 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 126
 127 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 128 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 129 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 130
 131 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 132
 133 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 134
 135 #if defined(__WIN95__) && !defined(__TWIN32__)
 136     #define wxUSE_RICHEDIT 1
 137 #else
 138     #define wxUSE_RICHEDIT 0
 139 #endif
 140
 141 #if wxUSE_RICHEDIT
 142     static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
 143 #endif
 144
 145 // ===========================================================================
 146 // implementation
 147 // ===========================================================================
 148
 149 // ---------------------------------------------------------------------------
 150 // wxApp
 151 // ---------------------------------------------------------------------------
 152
 153 #if !USE_SHARED_LIBRARY
 154     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 155
 156     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 157         EVT_IDLE(wxApp::OnIdle)
 158         EVT_END_SESSION(wxApp::OnEndSession)
 159         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 160     END_EVENT_TABLE()
 161 #endif
 162
 163 //// Initialize
 164 bool wxApp::Initialize()
 165 {
 166     // Some people may wish to use this, but
 167     // probably it shouldn't be here by default.
 168 #ifdef __WXDEBUG__
 169     //    wxRedirectIOToConsole();
 170 #endif
 171
 172     wxBuffer = new wxChar[1500]; // FIXME
 173
 174     wxClassInfo::InitializeClasses();
 175
 176 #if wxUSE_RESOURCES
 177     wxGetResource(_T("wxWindows"), _T("OsVersion"), &wxOsVersion);
 178 #endif
 179
 180     // I'm annoyed ... I don't know where to put this and I don't want to
 181     // create a module for that as it's part of the core.
 182 #if wxUSE_THREADS
 183     wxPendingEvents = new wxList();
 184     wxPendingEventsLocker = new wxCriticalSection();
 185 #endif
 186
 187     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 188     wxTheColourDatabase->Initialize();
 189
 190     wxInitializeStockLists();
 191     wxInitializeStockObjects();
 192
 193 #if wxUSE_WX_RESOURCES
 194     wxInitializeResourceSystem();
 195 #endif
 196
 197     wxBitmap::InitStandardHandlers();
 198
 199 #if defined(__WIN95__)
 200     InitCommonControls();
 201
 202 #if wxUSE_RICHEDIT
 203     gs_hRichEdit = LoadLibrary(_T("RICHED32.DLL"));
 204
 205     if (gs_hRichEdit == (HINSTANCE) NULL)
 206     {
 207         wxLogError(_("Could not initialise Rich Edit DLL"));
 208     }
 209 #endif // wxUSE_RICHEDIT
 210
 211 #endif // __WIN95__
 212
 213 #if wxUSE_OLE
 214
 215 #ifdef __WIN16__
 216     // for OLE, enlarge message queue to be as large as possible
 217     int iMsg = 96;
 218     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 219         ;
 220 #endif // Win16
 221
 222     // we need to initialize OLE library
 223     if ( FAILED(::OleInitialize(NULL)) )
 224         wxLogError(_("Cannot initialize OLE"));
 225 #endif // wxUSE_OLE
 226
 227 #if wxUSE_CTL3D
 228     if (!Ctl3dRegister(wxhInstance))
 229         wxLogError(_T("Cannot register CTL3D"));
 230
 231     Ctl3dAutoSubclass(wxhInstance);
 232 #endif
 233
 234     g_globalCursor = new wxCursor;
 235
 236     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, _T("wxSTD_FRAME"));
 237     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, _T("wxSTD_MDIPARENTFRAME"));
 238     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, _T("wxSTD_MDICHILDFRAME"));
 239
 240     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, _T("wxDEFAULT_FRAME"));
 241     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, _T("wxDEFAULT_MDIPARENTFRAME"));
 242     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, _T("wxDEFAULT_MDICHILDFRAME"));
 243
 244     RegisterWindowClasses();
 245
 246     // Create the brush for disabling bitmap buttons
 247
 248     LOGBRUSH lb;
 249     lb.lbStyle = BS_PATTERN;
 250     lb.lbHatch = (int)LoadBitmap( wxhInstance, _T("wxDISABLE_BUTTON_BITMAP") );
 251     if ( lb.lbHatch )
 252     {
 253         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 254         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 255     }
 256     //else: wxWindows resources are probably not linked in
 257
 258 #if wxUSE_PENWINDOWS
 259     wxRegisterPenWin();
 260 #endif
 261
 262     wxWinHandleList = new wxList(wxKEY_INTEGER);
 263
 264     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 265     // PLEASE DO NOT ALTER THIS.
 266 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 267     extern char wxDummyChar;
 268     if (wxDummyChar) wxDummyChar++;
 269 #endif
 270
 271     wxSetKeyboardHook(TRUE);
 272
 273     wxModule::RegisterModules();
 274     if (!wxModule::InitializeModules())
 275         return FALSE;
 276     return TRUE;
 277 }
 278
 279 // ---------------------------------------------------------------------------
 280 // RegisterWindowClasses
 281 // ---------------------------------------------------------------------------
 282
 283 bool wxApp::RegisterWindowClasses()
 284 {
 285     WNDCLASS wndclass;
 286
 287     // for each class we register one with CS_(V|H)REDRAW style and one
 288     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 289     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 290     static const long styleNoRedraw = CS_DBLCLKS;
 291
 292     // the fields which are common to all classes
 293     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 294     wndclass.cbClsExtra    = 0;
 295     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 296     wndclass.hInstance     = wxhInstance;
 297     wndclass.hIcon         = (HICON) NULL;
 298     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 299     wndclass.lpszMenuName  = NULL;
 300
 301     // Register the frame window class.
 302     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 303     wndclass.style         = styleNormal;
 304     wndclass.lpszClassName = wxFrameClassName;
 305
 306     if ( !RegisterClass(&wndclass) )
 307     {
 308         wxLogLastError("RegisterClass(frame)");
 309
 310         return FALSE;
 311     }
 312
 313     // "no redraw" frame
 314     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 315     wndclass.style         = styleNoRedraw;
 316
 317     if ( !RegisterClass(&wndclass) )
 318     {
 319         wxLogLastError("RegisterClass(no redraw frame)");
 320
 321         return FALSE;
 322     }
 323
 324     // Register the MDI frame window class.
 325     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 326     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 327
 328     if ( !RegisterClass(&wndclass) )
 329     {
 330         wxLogLastError("RegisterClass(MDI parent)");
 331
 332         return FALSE;
 333     }
 334
 335     // "no redraw" MDI frame
 336     wndclass.lpszClassName = wxMDIFrameClassName;
 337     wndclass.style         = styleNoRedraw;
 338
 339     if ( !RegisterClass(&wndclass) )
 340     {
 341         wxLogLastError("RegisterClass(no redraw MDI parent frame)");
 342
 343         return FALSE;
 344     }
 345
 346     // Register the MDI child frame window class.
 347     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 348     wndclass.lpszClassName = wxMDIChildFrameClassName;
 349
 350     if ( !RegisterClass(&wndclass) )
 351     {
 352         wxLogLastError("RegisterClass(MDI child)");
 353
 354         return FALSE;
 355     }
 356
 357     // "no redraw" MDI child frame
 358     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 359     wndclass.style         = styleNoRedraw;
 360
 361     if ( !RegisterClass(&wndclass) )
 362     {
 363         wxLogLastError("RegisterClass(no redraw MDI child)");
 364
 365         return FALSE;
 366     }
 367
 368     // Register the panel window class.
 369     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 370     wndclass.lpszClassName = wxPanelClassName;
 371
 372     if ( !RegisterClass(&wndclass) )
 373     {
 374         wxLogLastError("RegisterClass(panel)");
 375
 376         return FALSE;
 377     }
 378
 379     // Register the canvas and textsubwindow class name
 380     wndclass.hbrBackground = (HBRUSH)NULL;
 381     wndclass.lpszClassName = wxCanvasClassName;
 382
 383     if ( !RegisterClass(&wndclass) )
 384     {
 385         wxLogLastError("RegisterClass(canvas)");
 386
 387         return FALSE;
 388     }
 389
 390     return TRUE;
 391 }
 392
 393 // ---------------------------------------------------------------------------
 394 // Convert Windows to argc, argv style
 395 // ---------------------------------------------------------------------------
 396
 397 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 398 {
 399     wxStringList args;
 400
 401     wxString cmdLine(lpCmdLine);
 402     int count = 0;
 403
 404     // Get application name
 405     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 406     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 407
 408     args.Add(name);
 409     count++;
 410
 411     wxStrcpy(name, wxFileNameFromPath(name));
 412     wxStripExtension(name);
 413     wxTheApp->SetAppName(name);
 414
 415     // Break up string
 416     // Treat strings enclosed in double-quotes as single arguments
 417     int i = 0;
 418     int len = cmdLine.Length();
 419     while (i < len)
 420     {
 421         // Skip whitespace
 422         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 423             i ++;
 424
 425         if (i < len)
 426         {
 427             if (cmdLine.GetChar(i) == _T('"')) // We found the start of a string
 428             {
 429                 i ++;
 430                 int first = i;
 431                 while ((i < len) && (cmdLine.GetChar(i) != _T('"')))
 432                     i ++;
 433
 434                 wxString arg(cmdLine.Mid(first, (i - first)));
 435
 436                 args.Add(arg);
 437                 count ++;
 438
 439                 if (i < len)
 440                     i ++; // Skip past 2nd quote
 441             }
 442             else // Unquoted argument
 443             {
 444                 int first = i;
 445                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 446                     i ++;
 447
 448                 wxString arg(cmdLine.Mid(first, (i - first)));
 449
 450                 args.Add(arg);
 451                 count ++;
 452             }
 453         }
 454     }
 455
 456     wxTheApp->argv = new wxChar*[count + 1];
 457     for (i = 0; i < count; i++)
 458     {
 459         wxString arg(args[i]);
 460         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 461     }
 462     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 463     wxTheApp->argc = count;
 464 }
 465
 466 //// Cleans up any wxWindows internal structures left lying around
 467
 468 void wxApp::CleanUp()
 469 {
 470     //// COMMON CLEANUP
 471
 472 #if wxUSE_LOG
 473     // flush the logged messages if any and install a 'safer' log target: the
 474     // default one (wxLogGui) can't be used after the resources are freed just
 475     // below and the user suppliedo ne might be even more unsafe (using any
 476     // wxWindows GUI function is unsafe starting from now)
 477     wxLog::DontCreateOnDemand();
 478
 479     // this will flush the old messages if any
 480     delete wxLog::SetActiveTarget(new wxLogStderr);
 481 #endif // wxUSE_LOG
 482
 483     // One last chance for pending objects to be cleaned up
 484     wxTheApp->DeletePendingObjects();
 485
 486     wxModule::CleanUpModules();
 487
 488 #if wxUSE_WX_RESOURCES
 489     wxCleanUpResourceSystem();
 490
 491     //  wxDefaultResourceTable->ClearTable();
 492 #endif
 493
 494     // Indicate that the cursor can be freed, so that cursor won't be deleted
 495     // by deleting the bitmap list before g_globalCursor goes out of scope
 496     // (double deletion of the cursor).
 497     wxSetCursor(wxNullCursor);
 498     delete g_globalCursor;
 499     g_globalCursor = NULL;
 500
 501     wxDeleteStockObjects();
 502
 503     // Destroy all GDI lists, etc.
 504     wxDeleteStockLists();
 505
 506     delete wxTheColourDatabase;
 507     wxTheColourDatabase = NULL;
 508
 509     wxBitmap::CleanUpHandlers();
 510
 511     delete[] wxBuffer;
 512     wxBuffer = NULL;
 513
 514     //// WINDOWS-SPECIFIC CLEANUP
 515
 516     wxSetKeyboardHook(FALSE);
 517
 518 #ifdef __WIN95__
 519
 520 #if wxUSE_RICHEDIT
 521     if (gs_hRichEdit != (HINSTANCE) NULL)
 522         FreeLibrary(gs_hRichEdit);
 523 #endif
 524
 525 #endif
 526
 527 #if wxUSE_PENWINDOWS
 528     wxCleanUpPenWin();
 529 #endif
 530
 531     if (wxSTD_FRAME_ICON)
 532         DestroyIcon(wxSTD_FRAME_ICON);
 533     if (wxSTD_MDICHILDFRAME_ICON)
 534         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 535     if (wxSTD_MDIPARENTFRAME_ICON)
 536         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 537
 538     if (wxDEFAULT_FRAME_ICON)
 539         DestroyIcon(wxDEFAULT_FRAME_ICON);
 540     if (wxDEFAULT_MDICHILDFRAME_ICON)
 541         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 542     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 543         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 544
 545     if ( wxDisableButtonBrush )
 546         ::DeleteObject( wxDisableButtonBrush );
 547
 548 #if wxUSE_OLE
 549     ::OleUninitialize();
 550 #endif
 551
 552 #if wxUSE_CTL3D
 553     Ctl3dUnregister(wxhInstance);
 554 #endif
 555
 556     if (wxWinHandleList)
 557         delete wxWinHandleList;
 558
 559     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 560     // create a module for that as it's part of the core.
 561 #if wxUSE_THREADS
 562     delete wxPendingEvents;
 563     delete wxPendingEventsLocker;
 564     // If we don't do the following, we get an apparent memory leak.
 565     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 566 #endif
 567
 568     wxClassInfo::CleanUpClasses();
 569
 570     delete wxTheApp;
 571     wxTheApp = NULL;
 572
 573 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 574     // At this point we want to check if there are any memory
 575     // blocks that aren't part of the wxDebugContext itself,
 576     // as a special case. Then when dumping we need to ignore
 577     // wxDebugContext, too.
 578     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 579     {
 580         wxLogDebug(_T("There were memory leaks."));
 581         wxDebugContext::Dump();
 582         wxDebugContext::PrintStatistics();
 583     }
 584     //  wxDebugContext::SetStream(NULL, NULL);
 585 #endif
 586
 587 #if wxUSE_LOG
 588     // do it as the very last thing because everything else can log messages
 589     delete wxLog::SetActiveTarget(NULL);
 590 #endif // wxUSE_LOG
 591 }
 592
 593 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 594
 595 // temporarily disable this warning which would be generated in release builds
 596 // because of __try
 597 #ifdef __VISUALC__
 598     #pragma warning(disable: 4715) // not all control paths return a value
 599 #endif // Visual C++
 600
 601 //// Main wxWindows entry point
 602 int wxEntry(WXHINSTANCE hInstance,
 603             WXHINSTANCE WXUNUSED(hPrevInstance),
 604             char *lpCmdLine,
 605             int nCmdShow,
 606             bool enterLoop)
 607 {
 608     // do check for memory leaks on program exit
 609     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 610     //  deallocated memory which may be used to simulate low-memory condition)
 611     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 612
 613     // take everything into a try-except block in release build
 614     // FIXME other compilers must support Win32 SEH (structured exception
 615     //       handling) too, just find the appropriate keyword in their docs!
 616     //       Please note that it's _not_ the same as C++ exceptions!
 617 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 618     #define CATCH_PROGRAM_EXCEPTIONS
 619
 620     __try {
 621 #else
 622     #undef  CATCH_PROGRAM_EXCEPTIONS
 623 #endif
 624
 625         wxhInstance = (HINSTANCE) hInstance;
 626
 627         if (!wxApp::Initialize())
 628             return 0;
 629
 630         // create the application object or ensure that one already exists
 631         if (!wxTheApp)
 632         {
 633             // The app may have declared a global application object, but we recommend
 634             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 635             // function for delayed, dynamic app object construction.
 636             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 637                          _T("No initializer - use IMPLEMENT_APP macro.") );
 638
 639             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 640         }
 641
 642         wxCHECK_MSG( wxTheApp, 0, _T("You have to define an instance of wxApp!") );
 643
 644         // save the WinMain() parameters
 645         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 646         wxTheApp->m_nCmdShow = nCmdShow;
 647
 648         // GUI-specific initialisation. In fact on Windows we don't have any,
 649         // but this call is provided for compatibility across platforms.
 650         wxTheApp->OnInitGui();
 651
 652         int retValue = 0;
 653
 654         if ( wxTheApp->OnInit() )
 655         {
 656             if ( enterLoop )
 657             {
 658                 retValue = wxTheApp->OnRun();
 659             }
 660             else
 661                 // We want to initialize, but not run or exit immediately.
 662                 return 1;
 663         }
 664         //else: app initialization failed, so we skipped OnRun()
 665
 666         wxWindow *topWindow = wxTheApp->GetTopWindow();
 667         if ( topWindow )
 668         {
 669             // Forcibly delete the window.
 670             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 671                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 672             {
 673                 topWindow->Close(TRUE);
 674                 wxTheApp->DeletePendingObjects();
 675             }
 676             else
 677             {
 678                 delete topWindow;
 679                 wxTheApp->SetTopWindow(NULL);
 680             }
 681         }
 682
 683         wxTheApp->OnExit();
 684
 685         wxApp::CleanUp();
 686
 687         return retValue;
 688
 689 #ifdef CATCH_PROGRAM_EXCEPTIONS
 690     }
 691     __except ( EXCEPTION_EXECUTE_HANDLER ) {
 692         /*
 693            if ( wxTheApp )
 694            wxTheApp->OnFatalException();
 695          */
 696
 697         // using wxLog would be unsafe here
 698         ::MessageBox(NULL,
 699                      _("Unrecoverable program error detected: "
 700                      " the application will terminate."),
 701                      _("Fatal Error"),
 702                      MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 703
 704         ::ExitProcess(3); // the same exit code as abort()
 705
 706         // NOTREACHED
 707     }
 708 #endif // CATCH_PROGRAM_EXCEPTIONS
 709 }
 710
 711 // restore warning state
 712 #ifdef __VISUALC__
 713     #pragma warning(default: 4715) // not all control paths return a value
 714 #endif // Visual C++
 715
 716 #else /*  _WINDLL  */
 717
 718 //// Entry point for DLLs
 719
 720 int wxEntry(WXHINSTANCE hInstance)
 721 {
 722     wxhInstance = (HINSTANCE) hInstance;
 723     wxApp::Initialize();
 724
 725     // The app may have declared a global application object, but we recommend
 726     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 727     // for delayed, dynamic app object construction.
 728     if (!wxTheApp)
 729     {
 730         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 731                      "No initializer - use IMPLEMENT_APP macro." );
 732
 733         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 734     }
 735
 736     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 737
 738     wxTheApp->argc = 0;
 739     wxTheApp->argv = NULL;
 740
 741     wxTheApp->OnInitGui();
 742
 743     wxTheApp->OnInit();
 744
 745     wxWindow *topWindow = wxTheApp->GetTopWindow();
 746     if ( topWindow && topWindow->GetHWND())
 747     {
 748         topWindow->Show(TRUE);
 749     }
 750
 751     return 1;
 752 }
 753 #endif // _WINDLL
 754
 755 //// Static member initialization
 756
 757 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 758
 759 wxApp::wxApp()
 760 {
 761     m_topWindow = NULL;
 762     wxTheApp = this;
 763     m_wantDebugOutput = TRUE;
 764
 765     argc = 0;
 766     argv = NULL;
 767     m_printMode = wxPRINT_WINDOWS;
 768     m_exitOnFrameDelete = TRUE;
 769     m_auto3D = TRUE;
 770 }
 771
 772 wxApp::~wxApp()
 773 {
 774     // Delete command-line args
 775     int i;
 776     for (i = 0; i < argc; i++)
 777     {
 778         delete[] argv[i];
 779     }
 780     delete[] argv;
 781 }
 782
 783 bool wxApp::Initialized()
 784 {
 785 #ifndef _WINDLL
 786     if (GetTopWindow())
 787         return TRUE;
 788     else
 789         return FALSE;
 790 #endif
 791 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 792     return TRUE;
 793 #endif
 794 }
 795
 796 /*
 797  * Get and process a message, returning FALSE if WM_QUIT
 798  * received (and also set the flag telling the app to exit the main loop)
 799  *
 800  */
 801 bool wxApp::DoMessage()
 802 {
 803     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 804     if ( rc == 0 )
 805     {
 806         // got WM_QUIT
 807         m_keepGoing = FALSE;
 808
 809         return FALSE;
 810     }
 811     else if ( rc == -1 )
 812     {
 813         // should never happen, but let's test for it nevertheless
 814         wxLogLastError("GetMessage");
 815     }
 816     else
 817     {
 818 #if wxUSE_THREADS
 819         wxASSERT_MSG( wxThread::IsMain(),
 820                       _T("only the main thread can process Windows messages") );
 821
 822         static bool s_hadGuiLock = TRUE;
 823         static wxMsgArray s_aSavedMessages;
 824
 825         // if a secondary thread owns is doing GUI calls, save all messages for
 826         // later processing - we can't process them right now because it will
 827         // lead to recursive library calls (and we're not reentrant)
 828         if ( !wxGuiOwnedByMainThread() )
 829         {
 830             s_hadGuiLock = FALSE;
 831
 832             // leave out WM_COMMAND messages: too dangerous, sometimes
 833             // the message will be processed twice
 834             if ( !wxIsWaitingForThread() ||
 835                     s_currentMsg.message != WM_COMMAND )
 836             {
 837                 s_aSavedMessages.Add(s_currentMsg);
 838             }
 839
 840             return TRUE;
 841         }
 842         else
 843         {
 844             // have we just regained the GUI lock? if so, post all of the saved
 845             // messages
 846             //
 847             // FIXME of course, it's not _exactly_ the same as processing the
 848             //       messages normally - expect some things to break...
 849             if ( !s_hadGuiLock )
 850             {
 851                 s_hadGuiLock = TRUE;
 852
 853                 size_t count = s_aSavedMessages.Count();
 854                 for ( size_t n = 0; n < count; n++ )
 855                 {
 856                     MSG& msg = s_aSavedMessages[n];
 857
 858                     if ( !ProcessMessage((WXMSG *)&msg) )
 859                     {
 860                         ::TranslateMessage(&msg);
 861                         ::DispatchMessage(&msg);
 862                     }
 863                 }
 864
 865                 s_aSavedMessages.Empty();
 866             }
 867         }
 868 #endif // wxUSE_THREADS
 869
 870         // Process the message
 871         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 872         {
 873             ::TranslateMessage(&s_currentMsg);
 874             ::DispatchMessage(&s_currentMsg);
 875         }
 876     }
 877
 878     return TRUE;
 879 }
 880
 881 /*
 882  * Keep trying to process messages until WM_QUIT
 883  * received.
 884  *
 885  * If there are messages to be processed, they will all be
 886  * processed and OnIdle will not be called.
 887  * When there are no more messages, OnIdle is called.
 888  * If OnIdle requests more time,
 889  * it will be repeatedly called so long as there are no pending messages.
 890  * A 'feature' of this is that once OnIdle has decided that no more processing
 891  * is required, then it won't get processing time until further messages
 892  * are processed (it'll sit in DoMessage).
 893  */
 894
 895 int wxApp::MainLoop()
 896 {
 897     m_keepGoing = TRUE;
 898
 899     while ( m_keepGoing )
 900     {
 901 #if wxUSE_THREADS
 902         wxMutexGuiLeaveOrEnter();
 903 #endif // wxUSE_THREADS
 904
 905         while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 906                 ProcessIdle() )
 907         {
 908         }
 909
 910
 911         DoMessage();
 912     }
 913
 914     return s_currentMsg.wParam;
 915 }
 916
 917 // Returns TRUE if more time is needed.
 918 bool wxApp::ProcessIdle()
 919 {
 920     wxIdleEvent event;
 921     event.SetEventObject(this);
 922     ProcessEvent(event);
 923
 924     return event.MoreRequested();
 925 }
 926
 927 #if wxUSE_THREADS
 928 void wxApp::ProcessPendingEvents()
 929 {
 930     wxNode *node = wxPendingEvents->First();
 931     wxCriticalSectionLocker locker(*wxPendingEventsLocker);
 932
 933     while (node)
 934     {
 935         wxEvtHandler *handler = (wxEvtHandler *)node->Data();
 936
 937         handler->ProcessPendingEvents();
 938
 939         delete node;
 940         node = wxPendingEvents->First();
 941     }
 942 }
 943 #endif
 944
 945
 946 void wxApp::ExitMainLoop()
 947 {
 948     m_keepGoing = FALSE;
 949 }
 950
 951 bool wxApp::Pending()
 952 {
 953     return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0);
 954 }
 955
 956 void wxApp::Dispatch()
 957 {
 958     DoMessage();
 959 }
 960
 961 /*
 962  * Give all windows a chance to preprocess
 963  * the message. Some may have accelerator tables, or have
 964  * MDI complications.
 965  */
 966
 967 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 968 {
 969     MSG *msg = (MSG *)wxmsg;
 970     HWND hWnd = msg->hwnd;
 971     wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
 972
 973     // for some composite controls (like a combobox), wndThis might be NULL
 974     // because the subcontrol is not a wxWindow, but only the control itself
 975     // is - try to catch this case
 976     while ( hWnd && !wndThis )
 977     {
 978         hWnd = ::GetParent(hWnd);
 979         wndThis = wxFindWinFromHandle((WXHWND)hWnd);
 980     }
 981
 982     // Try translations first; find the youngest window with
 983     // a translation table.
 984     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 985     {
 986         if ( wnd->MSWTranslateMessage(wxmsg) )
 987             return TRUE;
 988     }
 989
 990     // Anyone for a non-translation message? Try youngest descendants first.
 991     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 992     {
 993         if ( wnd->MSWProcessMessage(wxmsg) )
 994             return TRUE;
 995     }
 996
 997     return FALSE;
 998 }
 999
1000 void wxApp::OnIdle(wxIdleEvent& event)
1001 {
1002     static bool s_inOnIdle = FALSE;
1003
1004     // Avoid recursion (via ProcessEvent default case)
1005     if ( s_inOnIdle )
1006         return;
1007
1008     s_inOnIdle = TRUE;
1009
1010     // 'Garbage' collection of windows deleted with Close().
1011     DeletePendingObjects();
1012
1013 #if wxUSE_LOG
1014     // flush the logged messages if any
1015     wxLog *pLog = wxLog::GetActiveTarget();
1016     if ( pLog != NULL && pLog->HasPendingMessages() )
1017         pLog->Flush();
1018 #endif // wxUSE_LOG
1019
1020     // Send OnIdle events to all windows
1021     if ( SendIdleEvents() )
1022     {
1023         // SendIdleEvents() returns TRUE if at least one window requested more
1024         // idle events
1025         event.RequestMore(TRUE);
1026     }
1027
1028     // If they are pending events, we must process them.
1029 #if wxUSE_THREADS
1030     ProcessPendingEvents();
1031 #endif
1032     s_inOnIdle = FALSE;
1033 }
1034
1035 // Send idle event to all top-level windows
1036 bool wxApp::SendIdleEvents()
1037 {
1038     bool needMore = FALSE;
1039
1040     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1041     while (node)
1042     {
1043         wxWindow* win = node->GetData();
1044         if (SendIdleEvents(win))
1045             needMore = TRUE;
1046         node = node->GetNext();
1047     }
1048
1049     return needMore;
1050 }
1051
1052 // Send idle event to window and all subwindows
1053 bool wxApp::SendIdleEvents(wxWindow* win)
1054 {
1055     bool needMore = FALSE;
1056
1057     wxIdleEvent event;
1058     event.SetEventObject(win);
1059     win->GetEventHandler()->ProcessEvent(event);
1060
1061     if (event.MoreRequested())
1062         needMore = TRUE;
1063
1064     wxNode* node = win->GetChildren().First();
1065     while (node)
1066     {
1067         wxWindow* win = (wxWindow*) node->Data();
1068         if (SendIdleEvents(win))
1069             needMore = TRUE;
1070
1071         node = node->Next();
1072     }
1073     return needMore;
1074 }
1075
1076 void wxApp::DeletePendingObjects()
1077 {
1078     wxNode *node = wxPendingDelete.First();
1079     while (node)
1080     {
1081         wxObject *obj = (wxObject *)node->Data();
1082
1083         delete obj;
1084
1085         if (wxPendingDelete.Member(obj))
1086             delete node;
1087
1088         // Deleting one object may have deleted other pending
1089         // objects, so start from beginning of list again.
1090         node = wxPendingDelete.First();
1091     }
1092 }
1093
1094 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1095 {
1096     if (GetTopWindow())
1097         GetTopWindow()->Close(TRUE);
1098 }
1099
1100 // Default behaviour: close the application with prompts. The
1101 // user can veto the close, and therefore the end session.
1102 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1103 {
1104     if (GetTopWindow())
1105     {
1106         if (!GetTopWindow()->Close(!event.CanVeto()))
1107             event.Veto(TRUE);
1108     }
1109 }
1110
1111 int wxApp::GetComCtl32Version() const
1112 {
1113     // have we loaded COMCTL32 yet?
1114     HMODULE theModule = ::GetModuleHandle(_T("COMCTL32"));
1115     int version = 0;
1116
1117     // if so, then we can check for the version
1118     if (theModule)
1119     {
1120         // InitCommonControlsEx is unique to 4.7 and later
1121         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1122
1123         if (! theProc)
1124         {                    // not found, must be 4.00
1125             version = 400;
1126         }
1127         else
1128         {
1129             // The following symbol are unique to 4.71
1130             //   DllInstall
1131             //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1132             //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1133             //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1134             //   FlatSB_ShowScrollBar
1135             //   _DrawIndirectImageList _DuplicateImageList
1136             //   InitializeFlatSB
1137             //   UninitializeFlatSB
1138             // we could check for any of these - I chose DllInstall
1139             FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1140             if (! theProc)
1141             {
1142                 // not found, must be 4.70
1143                 version = 470;
1144             }
1145             else
1146             {                         // found, must be 4.71
1147                 version = 471;
1148             }
1149         }
1150     }
1151     return version;
1152 }
1153
1154 void wxExit()
1155 {
1156     wxLogError(_("Fatal error: exiting"));
1157
1158     wxApp::CleanUp();
1159 }
1160
1161 // Yield to incoming messages
1162 bool wxYield()
1163 {
1164     MSG msg;
1165     // We want to go back to the main message loop
1166     // if we see a WM_QUIT. (?)
1167 #ifdef __WXWINE__
1168     while (PeekMessage(&msg, (HWND)NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1169 #else
1170     while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1171 #endif
1172     {
1173         if ( !wxTheApp->DoMessage() )
1174             break;
1175     }
1176     // If they are pending events, we must process them.
1177 #if wxUSE_THREADS
1178     wxTheApp->ProcessPendingEvents();
1179 #endif
1180
1181     return TRUE;
1182 }
1183
1184 wxIcon
1185 wxApp::GetStdIcon(int which) const
1186 {
1187     switch(which)
1188     {
1189         case wxICON_INFORMATION:
1190             return wxIcon("wxICON_INFO");
1191
1192         case wxICON_QUESTION:
1193             return wxIcon("wxICON_QUESTION");
1194
1195         case wxICON_EXCLAMATION:
1196             return wxIcon("wxICON_WARNING");
1197
1198         default:
1199             wxFAIL_MSG(_T("requested non existent standard icon"));
1200             // still fall through
1201
1202         case wxICON_HAND:
1203             return wxIcon("wxICON_ERROR");
1204     }
1205 }
1206
1207
1208 HINSTANCE wxGetInstance()
1209 {
1210     return wxhInstance;
1211 }
1212
1213 void wxSetInstance(HINSTANCE hInst)
1214 {
1215     wxhInstance = hInst;
1216 }
1217
1218 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1219 // if in a separate file. So include it here to ensure it's linked.
1220 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1221 #include "main.cpp"
1222 #endif