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 #ifndef wxUSE_NORLANDER_HEADERS
  73 #if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
  74     #undef wxUSE_OLE
  75
  76     #define  wxUSE_OLE 0
  77 #endif // broken compilers
  78 #endif
  79
  80 #if wxUSE_OLE
  81     #include <ole2.h>
  82 #endif
  83
  84 #include <string.h>
  85 #include <ctype.h>
  86
  87 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  88     #include <commctrl.h>
  89 #endif
  90
  91 #include "wx/msw/msvcrt.h"
  92
  93 // ---------------------------------------------------------------------------
  94 // global variables
  95 // ---------------------------------------------------------------------------
  96
  97 extern wxChar *wxBuffer;
  98 extern wxChar *wxOsVersion;
  99 extern wxList *wxWinHandleList;
 100 extern wxList WXDLLEXPORT wxPendingDelete;
 101 extern void wxSetKeyboardHook(bool doIt);
 102 extern wxCursor *g_globalCursor;
 103
 104 HINSTANCE wxhInstance = 0;
 105 MSG s_currentMsg;
 106 wxApp *wxTheApp = NULL;
 107
 108 // FIXME why not const? and not static?
 109
 110 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 111 //     with NR suffix - wxWindow::MSWCreate() supposes this
 112 wxChar wxFrameClassName[]         = wxT("wxFrameClass");
 113 wxChar wxFrameClassNameNoRedraw[] = wxT("wxFrameClassNR");
 114 wxChar wxMDIFrameClassName[]      = wxT("wxMDIFrameClass");
 115 wxChar wxMDIFrameClassNameNoRedraw[] = wxT("wxMDIFrameClassNR");
 116 wxChar wxMDIChildFrameClassName[] = wxT("wxMDIChildFrameClass");
 117 wxChar wxMDIChildFrameClassNameNoRedraw[] = wxT("wxMDIChildFrameClassNR");
 118 wxChar wxPanelClassName[]         = wxT("wxPanelClass");
 119 wxChar wxCanvasClassName[]        = wxT("wxCanvasClass");
 120
 121 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 122 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 123 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 124
 125 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 126 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 127 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 128
 129 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 130
 131 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 132
 133 #if defined(__WIN95__) && !defined(__TWIN32__)
 134     #define wxUSE_RICHEDIT 1
 135 #else
 136     #define wxUSE_RICHEDIT 0
 137 #endif
 138
 139 #if wxUSE_RICHEDIT
 140     static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
 141 #endif
 142
 143 // ===========================================================================
 144 // implementation
 145 // ===========================================================================
 146
 147 // ---------------------------------------------------------------------------
 148 // wxApp
 149 // ---------------------------------------------------------------------------
 150
 151 #if !USE_SHARED_LIBRARY
 152     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 153
 154     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 155         EVT_IDLE(wxApp::OnIdle)
 156         EVT_END_SESSION(wxApp::OnEndSession)
 157         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 158     END_EVENT_TABLE()
 159 #endif
 160
 161 //// Initialize
 162 bool wxApp::Initialize()
 163 {
 164     // Some people may wish to use this, but
 165     // probably it shouldn't be here by default.
 166 #ifdef __WXDEBUG__
 167     //    wxRedirectIOToConsole();
 168 #endif
 169
 170     wxBuffer = new wxChar[1500]; // FIXME
 171
 172     wxClassInfo::InitializeClasses();
 173
 174 #if wxUSE_RESOURCES
 175     wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
 176 #endif
 177
 178 #if wxUSE_THREADS
 179     wxPendingEventsLocker = new wxCriticalSection;
 180 #endif
 181
 182     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 183     wxTheColourDatabase->Initialize();
 184
 185     wxInitializeStockLists();
 186     wxInitializeStockObjects();
 187
 188 #if wxUSE_WX_RESOURCES
 189     wxInitializeResourceSystem();
 190 #endif
 191
 192     wxBitmap::InitStandardHandlers();
 193
 194 #if defined(__WIN95__)
 195     InitCommonControls();
 196
 197 #if wxUSE_RICHEDIT
 198     gs_hRichEdit = LoadLibrary(wxT("RICHED32.DLL"));
 199
 200     if (gs_hRichEdit == (HINSTANCE) NULL)
 201     {
 202         wxLogError(_("Could not initialise Rich Edit DLL"));
 203     }
 204 #endif // wxUSE_RICHEDIT
 205
 206 #endif // __WIN95__
 207
 208 #if wxUSE_OLE
 209
 210 #ifdef __WIN16__
 211     // for OLE, enlarge message queue to be as large as possible
 212     int iMsg = 96;
 213     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 214         ;
 215 #endif // Win16
 216     // we need to initialize OLE library
 217     if ( FAILED(::OleInitialize(NULL)) )
 218         wxLogError(_("Cannot initialize OLE"));
 219 #endif // wxUSE_OLE
 220
 221 #if wxUSE_CTL3D
 222     if (!Ctl3dRegister(wxhInstance))
 223         wxLogError(wxT("Cannot register CTL3D"));
 224
 225     Ctl3dAutoSubclass(wxhInstance);
 226 #endif
 227
 228     g_globalCursor = new wxCursor;
 229
 230     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 231     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 232     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 233
 234     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 235     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 236     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
 237
 238     RegisterWindowClasses();
 239
 240     // Create the brush for disabling bitmap buttons
 241
 242     LOGBRUSH lb;
 243     lb.lbStyle = BS_PATTERN;
 244     lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
 245     if ( lb.lbHatch )
 246     {
 247         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 248         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 249     }
 250     //else: wxWindows resources are probably not linked in
 251
 252 #if wxUSE_PENWINDOWS
 253     wxRegisterPenWin();
 254 #endif
 255
 256     wxWinHandleList = new wxList(wxKEY_INTEGER);
 257
 258     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 259     // PLEASE DO NOT ALTER THIS.
 260 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 261     extern char wxDummyChar;
 262     if (wxDummyChar) wxDummyChar++;
 263 #endif
 264
 265     wxSetKeyboardHook(TRUE);
 266
 267     wxModule::RegisterModules();
 268     if (!wxModule::InitializeModules())
 269         return FALSE;
 270     return TRUE;
 271 }
 272
 273 // ---------------------------------------------------------------------------
 274 // RegisterWindowClasses
 275 // ---------------------------------------------------------------------------
 276
 277 // TODO we should only register classes really used by the app. For this it
 278 //      would be enough to just delay the class registration until an attempt
 279 //      to create a window of this class is made.
 280 bool wxApp::RegisterWindowClasses()
 281 {
 282     WNDCLASS wndclass;
 283
 284     // for each class we register one with CS_(V|H)REDRAW style and one
 285     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 286     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 287     static const long styleNoRedraw = CS_DBLCLKS;
 288
 289     // the fields which are common to all classes
 290     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 291     wndclass.cbClsExtra    = 0;
 292     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 293     wndclass.hInstance     = wxhInstance;
 294     wndclass.hIcon         = (HICON) NULL;
 295     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 296     wndclass.lpszMenuName  = NULL;
 297
 298     // Register the frame window class.
 299     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 300     wndclass.lpszClassName = wxFrameClassName;
 301     wndclass.style         = styleNormal;
 302
 303     if ( !RegisterClass(&wndclass) )
 304     {
 305         wxLogLastError("RegisterClass(frame)");
 306
 307         return FALSE;
 308     }
 309
 310     // "no redraw" frame
 311     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 312     wndclass.style         = styleNoRedraw;
 313
 314     if ( !RegisterClass(&wndclass) )
 315     {
 316         wxLogLastError("RegisterClass(no redraw frame)");
 317
 318         return FALSE;
 319     }
 320
 321     // Register the MDI frame window class.
 322     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 323     wndclass.lpszClassName = wxMDIFrameClassName;
 324     wndclass.style         = styleNormal;
 325
 326     if ( !RegisterClass(&wndclass) )
 327     {
 328         wxLogLastError("RegisterClass(MDI parent)");
 329
 330         return FALSE;
 331     }
 332
 333     // "no redraw" MDI frame
 334     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 335     wndclass.style         = styleNoRedraw;
 336
 337     if ( !RegisterClass(&wndclass) )
 338     {
 339         wxLogLastError("RegisterClass(no redraw MDI parent frame)");
 340
 341         return FALSE;
 342     }
 343
 344     // Register the MDI child frame window class.
 345     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 346     wndclass.lpszClassName = wxMDIChildFrameClassName;
 347     wndclass.style         = styleNormal;
 348
 349     if ( !RegisterClass(&wndclass) )
 350     {
 351         wxLogLastError("RegisterClass(MDI child)");
 352
 353         return FALSE;
 354     }
 355
 356     // "no redraw" MDI child frame
 357     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 358     wndclass.style         = styleNoRedraw;
 359
 360     if ( !RegisterClass(&wndclass) )
 361     {
 362         wxLogLastError("RegisterClass(no redraw MDI child)");
 363
 364         return FALSE;
 365     }
 366
 367     // Register the panel window class.
 368     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 369     wndclass.lpszClassName = wxPanelClassName;
 370     wndclass.style         = styleNormal;
 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) == wxT('"')) // We found the start of a string
 428             {
 429                 i ++;
 430                 int first = i;
 431                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 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     delete wxPendingEvents;
 562 #if wxUSE_THREADS
 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(wxT("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                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 638
 639             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 640         }
 641
 642         wxCHECK_MSG( wxTheApp, 0, wxT("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                       wxT("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 void wxApp::ProcessPendingEvents()
 928 {
 929 #if wxUSE_THREADS
 930     // ensure that we're the only thread to modify the pending events list
 931     wxCriticalSectionLocker locker(*wxPendingEventsLocker);
 932 #endif
 933
 934     if ( !wxPendingEvents )
 935         return;
 936
 937     wxNode *node = wxPendingEvents->First();
 938     while (node)
 939     {
 940         wxEvtHandler *handler = (wxEvtHandler *)node->Data();
 941
 942         handler->ProcessPendingEvents();
 943
 944         delete node;
 945         node = wxPendingEvents->First();
 946     }
 947 }
 948
 949 void wxApp::ExitMainLoop()
 950 {
 951     m_keepGoing = FALSE;
 952 }
 953
 954 bool wxApp::Pending()
 955 {
 956     return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0);
 957 }
 958
 959 void wxApp::Dispatch()
 960 {
 961     DoMessage();
 962 }
 963
 964 /*
 965  * Give all windows a chance to preprocess
 966  * the message. Some may have accelerator tables, or have
 967  * MDI complications.
 968  */
 969
 970 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 971 {
 972     MSG *msg = (MSG *)wxmsg;
 973     HWND hWnd = msg->hwnd;
 974     wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
 975
 976     // for some composite controls (like a combobox), wndThis might be NULL
 977     // because the subcontrol is not a wxWindow, but only the control itself
 978     // is - try to catch this case
 979     while ( hWnd && !wndThis )
 980     {
 981         hWnd = ::GetParent(hWnd);
 982         wndThis = wxFindWinFromHandle((WXHWND)hWnd);
 983     }
 984
 985     // Try translations first; find the youngest window with
 986     // a translation table.
 987     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 988     {
 989         if ( wnd->MSWTranslateMessage(wxmsg) )
 990             return TRUE;
 991     }
 992
 993     // Anyone for a non-translation message? Try youngest descendants first.
 994     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 995     {
 996         if ( wnd->MSWProcessMessage(wxmsg) )
 997             return TRUE;
 998     }
 999
1000     return FALSE;
1001 }
1002
1003 void wxApp::OnIdle(wxIdleEvent& event)
1004 {
1005     static bool s_inOnIdle = FALSE;
1006
1007     // Avoid recursion (via ProcessEvent default case)
1008     if ( s_inOnIdle )
1009         return;
1010
1011     s_inOnIdle = TRUE;
1012
1013     // 'Garbage' collection of windows deleted with Close().
1014     DeletePendingObjects();
1015
1016 #if wxUSE_LOG
1017     // flush the logged messages if any
1018     wxLog *pLog = wxLog::GetActiveTarget();
1019     if ( pLog != NULL && pLog->HasPendingMessages() )
1020         pLog->Flush();
1021 #endif // wxUSE_LOG
1022
1023     // Send OnIdle events to all windows
1024     if ( SendIdleEvents() )
1025     {
1026         // SendIdleEvents() returns TRUE if at least one window requested more
1027         // idle events
1028         event.RequestMore(TRUE);
1029     }
1030
1031     // If they are pending events, we must process them: pending events are
1032     // either events to the threads other than main or events posted with
1033     // wxPostEvent() functions
1034     ProcessPendingEvents();
1035
1036     s_inOnIdle = FALSE;
1037 }
1038
1039 // Send idle event to all top-level windows
1040 bool wxApp::SendIdleEvents()
1041 {
1042     bool needMore = FALSE;
1043
1044     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1045     while (node)
1046     {
1047         wxWindow* win = node->GetData();
1048         if (SendIdleEvents(win))
1049             needMore = TRUE;
1050         node = node->GetNext();
1051     }
1052
1053     return needMore;
1054 }
1055
1056 // Send idle event to window and all subwindows
1057 bool wxApp::SendIdleEvents(wxWindow* win)
1058 {
1059     bool needMore = FALSE;
1060
1061     wxIdleEvent event;
1062     event.SetEventObject(win);
1063     win->GetEventHandler()->ProcessEvent(event);
1064
1065     if (event.MoreRequested())
1066         needMore = TRUE;
1067
1068     wxNode* node = win->GetChildren().First();
1069     while (node)
1070     {
1071         wxWindow* win = (wxWindow*) node->Data();
1072         if (SendIdleEvents(win))
1073             needMore = TRUE;
1074
1075         node = node->Next();
1076     }
1077     return needMore;
1078 }
1079
1080 void wxApp::DeletePendingObjects()
1081 {
1082     wxNode *node = wxPendingDelete.First();
1083     while (node)
1084     {
1085         wxObject *obj = (wxObject *)node->Data();
1086
1087         delete obj;
1088
1089         if (wxPendingDelete.Member(obj))
1090             delete node;
1091
1092         // Deleting one object may have deleted other pending
1093         // objects, so start from beginning of list again.
1094         node = wxPendingDelete.First();
1095     }
1096 }
1097
1098 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1099 {
1100     if (GetTopWindow())
1101         GetTopWindow()->Close(TRUE);
1102 }
1103
1104 // Default behaviour: close the application with prompts. The
1105 // user can veto the close, and therefore the end session.
1106 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1107 {
1108     if (GetTopWindow())
1109     {
1110         if (!GetTopWindow()->Close(!event.CanVeto()))
1111             event.Veto(TRUE);
1112     }
1113 }
1114
1115 int wxApp::GetComCtl32Version() const
1116 {
1117     // have we loaded COMCTL32 yet?
1118     HMODULE theModule = ::GetModuleHandle(wxT("COMCTL32"));
1119     int version = 0;
1120
1121     // if so, then we can check for the version
1122     if (theModule)
1123     {
1124         // InitCommonControlsEx is unique to 4.7 and later
1125         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1126
1127         if (! theProc)
1128         {                    // not found, must be 4.00
1129             version = 400;
1130         }
1131         else
1132         {
1133             // The following symbol are unique to 4.71
1134             //   DllInstall
1135             //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1136             //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1137             //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1138             //   FlatSB_ShowScrollBar
1139             //   _DrawIndirectImageList _DuplicateImageList
1140             //   InitializeFlatSB
1141             //   UninitializeFlatSB
1142             // we could check for any of these - I chose DllInstall
1143             FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1144             if (! theProc)
1145             {
1146                 // not found, must be 4.70
1147                 version = 470;
1148             }
1149             else
1150             {                         // found, must be 4.71
1151                 version = 471;
1152             }
1153         }
1154     }
1155     return version;
1156 }
1157
1158 void wxExit()
1159 {
1160     wxLogError(_("Fatal error: exiting"));
1161
1162     wxApp::CleanUp();
1163 }
1164
1165 // Yield to incoming messages
1166 bool wxYield()
1167 {
1168     // we don't want to process WM_QUIT from here - it should be processed in
1169     // the main event loop in order to stop it
1170
1171     MSG msg;
1172     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1173             msg.message != WM_QUIT )
1174     {
1175         if ( !wxTheApp->DoMessage() )
1176             break;
1177     }
1178
1179     // If they are pending events, we must process them.
1180     wxTheApp->ProcessPendingEvents();
1181
1182     return TRUE;
1183 }
1184
1185 wxIcon
1186 wxApp::GetStdIcon(int which) const
1187 {
1188     switch(which)
1189     {
1190         case wxICON_INFORMATION:
1191             return wxIcon("wxICON_INFO");
1192
1193         case wxICON_QUESTION:
1194             return wxIcon("wxICON_QUESTION");
1195
1196         case wxICON_EXCLAMATION:
1197             return wxIcon("wxICON_WARNING");
1198
1199         default:
1200             wxFAIL_MSG(wxT("requested non existent standard icon"));
1201             // still fall through
1202
1203         case wxICON_HAND:
1204             return wxIcon("wxICON_ERROR");
1205     }
1206 }
1207
1208
1209 HINSTANCE wxGetInstance()
1210 {
1211     return wxhInstance;
1212 }
1213
1214 void wxSetInstance(HINSTANCE hInst)
1215 {
1216     wxhInstance = hInst;
1217 }
1218
1219 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1220 // if in a separate file. So include it here to ensure it's linked.
1221 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1222 #include "main.cpp"
1223 #endif