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