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 #ifdef __GNUG__
  13 #pragma implementation "app.h"
  14 #endif
  15
  16 // For compilers that support precompilation, includes "wx.h".
  17 #include "wx/wxprec.h"
  18
  19 #if defined(__BORLANDC__)
  20 #pragma hdrstop
  21 #endif
  22
  23 #ifndef WX_PRECOMP
  24   #include "wx/frame.h"
  25   #include "wx/app.h"
  26   #include "wx/utils.h"
  27   #include "wx/gdicmn.h"
  28   #include "wx/pen.h"
  29   #include "wx/brush.h"
  30   #include "wx/cursor.h"
  31   #include "wx/icon.h"
  32   #include "wx/palette.h"
  33   #include "wx/dc.h"
  34   #include "wx/dialog.h"
  35   #include "wx/msgdlg.h"
  36 #endif
  37
  38 #include "wx/msw/private.h"
  39 #include "wx/log.h"
  40 #include "wx/module.h"
  41
  42 #if wxUSE_WX_RESOURCES
  43   #include "wx/resource.h"
  44 #endif
  45
  46 #include <string.h>
  47 #include <ctype.h>
  48
  49 #if defined(__WIN95__) && !defined(__GNUWIN32__)
  50   #include <commctrl.h>
  51 #endif
  52
  53 // use debug CRT functions for memory leak detections in VC++ if we're not
  54 // using wxWindows own methods
  55 #if defined(__WXDEBUG__) && defined(_MSC_VER) && !wxUSE_GLOBAL_MEMORY_OPERATORS && !defined(__NO_VC_CRTDBG__)
  56     #define wxUSE_VC_CRTDBG
  57 #else
  58     #undef wxUSE_VC_CRTDBG
  59 #endif
  60
  61 #ifdef wxUSE_VC_CRTDBG
  62   // VC++ uses this macro as debug/release mode indicator
  63   #ifndef _DEBUG
  64     #define _DEBUG
  65   #endif
  66
  67   /* Need to undef new if including crtdbg.h */
  68   #ifdef new
  69   #undef new
  70   #endif
  71
  72   #include <crtdbg.h>
  73
  74   #if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
  75   #define new new(__FILE__,__LINE__)
  76   #endif
  77
  78 #endif
  79
  80 extern char *wxBuffer;
  81 extern char *wxOsVersion;
  82 extern wxList *wxWinHandleList;
  83 extern wxList wxPendingDelete;
  84 extern void wxSetKeyboardHook(bool doIt);
  85 extern wxCursor *g_globalCursor;
  86
  87 HINSTANCE wxhInstance = 0;
  88 static MSG s_currentMsg;
  89 wxApp *wxTheApp = NULL;
  90
  91 // @@ why not const? and not static?
  92 char wxFrameClassName[]         = "wxFrameClass";
  93 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
  94 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
  95 char wxPanelClassName[]         = "wxPanelClass";
  96 char wxCanvasClassName[]        = "wxCanvasClass";
  97
  98 HICON wxSTD_FRAME_ICON = NULL;
  99 HICON wxSTD_MDICHILDFRAME_ICON = NULL;
 100 HICON wxSTD_MDIPARENTFRAME_ICON = NULL;
 101
 102 HICON wxDEFAULT_FRAME_ICON = NULL;
 103 HICON wxDEFAULT_MDICHILDFRAME_ICON = NULL;
 104 HICON wxDEFAULT_MDIPARENTFRAME_ICON = NULL;
 105
 106 HBRUSH wxDisableButtonBrush = 0;
 107
 108 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 109
 110 #if !USE_SHARED_LIBRARY
 111   IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 112
 113   BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 114       EVT_IDLE(wxApp::OnIdle)
 115       EVT_END_SESSION(wxApp::OnEndSession)
 116       EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 117   END_EVENT_TABLE()
 118 #endif
 119
 120 long wxApp::sm_lastMessageTime = 0;
 121
 122 #ifdef __WIN95__
 123   static HINSTANCE gs_hRichEdit = NULL;
 124 #endif
 125
 126 //// Initialize
 127
 128 bool wxApp::Initialize()
 129 {
 130     // Some people may wish to use this, but
 131     // probably it shouldn't be here by default.
 132 #ifdef __WXDEBUG__
 133 //    wxRedirectIOToConsole();
 134 #endif
 135
 136     wxBuffer = new char[1500];
 137
 138 #ifdef wxUSE_VC_CRTDBG
 139     // do check for memory leaks on program exit
 140     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 141     //  deallocated memory which may be used to simulate low-memory condition)
 142     _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
 143 #endif // debug build under MS VC++
 144
 145     wxClassInfo::InitializeClasses();
 146
 147 #if wxUSE_RESOURCES
 148     wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 149 #endif
 150
 151     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 152     wxTheColourDatabase->Initialize();
 153
 154     wxInitializeStockLists();
 155     wxInitializeStockObjects();
 156
 157 #if wxUSE_WX_RESOURCES
 158     wxInitializeResourceSystem();
 159 #endif
 160
 161     wxBitmap::InitStandardHandlers();
 162
 163 #if defined(__WIN95__)
 164     InitCommonControls();
 165     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 166
 167     if (gs_hRichEdit == NULL)
 168     {
 169       wxMessageBox("Could not initialise Rich Edit DLL");
 170     }
 171 #endif
 172
 173     int iMsg = 96;
 174
 175    // for OLE, enlarge message queue to be as large as possible
 176    while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 177
 178 /*
 179     DWORD dwOleVer;
 180     dwOleVer = CoBuildVersion();
 181
 182     // check the OLE library version
 183     if (rmm != HIWORD(dwOleVer))
 184     {
 185         wxMessageBox("Incorrect version of OLE libraries.");
 186         return FALSE;
 187     }
 188 */
 189
 190 #ifndef __GNUWIN32__
 191     // we need to initialize OLE library
 192     if ( FAILED(::OleInitialize(NULL)) )
 193       wxFatalError(_("Cannot initialize OLE"));
 194 #endif
 195
 196 #if CTL3D
 197     if (!Ctl3dRegister(wxhInstance))
 198       wxFatalError("Cannot register CTL3D");
 199
 200     Ctl3dAutoSubclass(wxhInstance);
 201 #endif
 202
 203     g_globalCursor = new wxCursor;
 204
 205     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 206     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 207     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 208
 209     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 210     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 211     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 212
 213     RegisterWindowClasses();
 214
 215     // Create the brush for disabling bitmap buttons
 216
 217     LOGBRUSH lb ;
 218     lb.lbStyle = BS_PATTERN;
 219     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 220     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 221     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 222
 223 #if wxUSE_PENWINDOWS
 224     wxRegisterPenWin();
 225 #endif
 226
 227     wxWinHandleList = new wxList(wxKEY_INTEGER);
 228
 229     // This is to foil optimizations in Visual C++ that
 230     // throw out dummy.obj.
 231 #if (_MSC_VER >= 800) && !defined(WXMAKINGDLL)
 232     extern char wxDummyChar;
 233     if (wxDummyChar) wxDummyChar++;
 234 #endif
 235
 236     wxSetKeyboardHook(TRUE);
 237
 238     wxModule::RegisterModules();
 239     if (!wxModule::InitializeModules())
 240         return FALSE;
 241     return TRUE;
 242 }
 243
 244 //// RegisterWindowClasses
 245
 246 bool wxApp::RegisterWindowClasses()
 247 {
 248 ///////////////////////////////////////////////////////////////////////
 249 // Register the frame window class.
 250   WNDCLASS wndclass;   // Structure used to register Windows class.
 251
 252   wndclass.style         = CS_HREDRAW | CS_VREDRAW;
 253   wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 254   wndclass.cbClsExtra    = 0;
 255   wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 256   wndclass.hInstance     = wxhInstance;
 257   wndclass.hIcon         = NULL;        // wxSTD_FRAME_ICON;
 258   wndclass.hCursor       = LoadCursor( NULL, IDC_ARROW );
 259   wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 260 //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 261   wndclass.lpszMenuName  = NULL;
 262 #ifdef _MULTIPLE_INSTANCES
 263   sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 264 #endif
 265   wndclass.lpszClassName = wxFrameClassName;
 266
 267   if (!RegisterClass( &wndclass ))
 268   {
 269     // wxFatalError("Can't register Frame Window class");
 270   }
 271
 272 ///////////////////////////////////////////////////////////////////////
 273 // Register the MDI frame window class.
 274   WNDCLASS wndclass1;   // Structure used to register Windows class.
 275
 276   wndclass1.style         = CS_HREDRAW | CS_VREDRAW;
 277   wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 278   wndclass1.cbClsExtra    = 0;
 279   wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 280   wndclass1.hInstance     = wxhInstance;
 281   wndclass1.hIcon         = NULL; // wxSTD_MDIPARENTFRAME_ICON;
 282   wndclass1.hCursor       = LoadCursor( NULL, IDC_ARROW );
 283 //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 284   wndclass1.hbrBackground = NULL;
 285   wndclass1.lpszMenuName  = NULL;
 286
 287   wndclass1.lpszClassName = wxMDIFrameClassName;
 288   if (!RegisterClass( &wndclass1 ))
 289   {
 290 //    wxFatalError("Can't register MDI Frame window class");
 291 //  return FALSE;
 292   }
 293
 294 ///////////////////////////////////////////////////////////////////////
 295 // Register the MDI child frame window class.
 296   WNDCLASS wndclass4;   // Structure used to register Windows class.
 297
 298   wndclass4.style         = CS_HREDRAW | CS_VREDRAW;
 299   wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 300   wndclass4.cbClsExtra    = 0;
 301   wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 302   wndclass4.hInstance     = wxhInstance;
 303   wndclass4.hIcon         = NULL;       // wxSTD_MDICHILDFRAME_ICON;
 304   wndclass4.hCursor       = LoadCursor( NULL, IDC_ARROW );
 305   // TODO: perhaps this should be NULL so that Windows doesn't
 306   // paint the background itself (would OnEraseBackground duplicate
 307   // this?)
 308   wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 309 //  wndclass4.hbrBackground = NULL;
 310   wndclass4.lpszMenuName  = NULL;
 311   wndclass4.lpszClassName = wxMDIChildFrameClassName;
 312
 313   if (!RegisterClass( &wndclass4 ))
 314   {
 315 //   wxFatalError("Can't register MDI child frame window class");
 316 //   return FALSE;
 317   }
 318
 319 ///////////////////////////////////////////////////////////////////////
 320 // Register the panel window class.
 321   WNDCLASS wndclass2;   // Structure used to register Windows class.
 322   memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 323   // Use CS_OWNDC to avoid messing about restoring the context
 324   // for every graphic operation.
 325   wndclass2.style         = CS_HREDRAW | CS_VREDRAW;
 326   wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 327   wndclass2.cbClsExtra    = 0;
 328   wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 329   wndclass2.hInstance     = wxhInstance;
 330   wndclass2.hIcon         = NULL;
 331   wndclass2.hCursor       = NULL;
 332 //  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
 333   wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 334   wndclass2.lpszMenuName  = NULL;
 335   wndclass2.lpszClassName = wxPanelClassName;
 336   if (!RegisterClass( &wndclass2 ))
 337   {
 338 //   wxFatalError("Can't register Panel Window class");
 339 //   return FALSE;
 340   }
 341
 342 ///////////////////////////////////////////////////////////////////////
 343 // Register the canvas and textsubwindow class name
 344   WNDCLASS wndclass3;   // Structure used to register Windows class.
 345   memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
 346   // Use CS_OWNDC to avoid messing about restoring the context
 347   // for every graphic operation.
 348 //  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
 349   // wxWin 2.0
 350   wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 351   wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
 352   wndclass3.cbClsExtra    = 0;
 353   wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
 354   wndclass3.hInstance     = wxhInstance;
 355   wndclass3.hIcon         = NULL;
 356   wndclass3.hCursor       = NULL;
 357 //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 358   wndclass3.hbrBackground = NULL;
 359   wndclass3.lpszMenuName  = NULL;
 360   wndclass3.lpszClassName = wxCanvasClassName;
 361   if (!RegisterClass( &wndclass3))
 362   {
 363 //   wxFatalError("Can't register Canvas class");
 364 //   return FALSE;
 365   }
 366
 367   return TRUE;
 368 }
 369
 370 //// Convert Windows to argc, argv style
 371
 372 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 373 {
 374     wxStringList args;
 375
 376     wxString cmdLine(lpCmdLine);
 377     int count = 0;
 378
 379     // Get application name
 380     char name[260]; // 260 is MAX_PATH value from windef.h
 381     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 382
 383     // GNUWIN32 already fills in the first arg with the application name.
 384 #if !defined(__GNUWIN32__)
 385     args.Add(name);
 386     count ++;
 387 #endif
 388
 389     strcpy(name, wxFileNameFromPath(name));
 390     wxStripExtension(name);
 391     wxTheApp->SetAppName(name);
 392
 393     // Break up string
 394     // Treat strings enclosed in double-quotes as single arguments
 395     int i = 0;
 396     int len = cmdLine.Length();
 397     while (i < len)
 398     {
 399         // Skip whitespace
 400         while ((i < len) && isspace(cmdLine.GetChar(i)))
 401             i ++;
 402
 403         if (i < len)
 404         {
 405             if (cmdLine.GetChar(i) == '"') // We found the start of a string
 406             {
 407                 i ++;
 408                 int first = i;
 409                 while ((i < len) && (cmdLine.GetChar(i) != '"'))
 410                     i ++;
 411
 412                 wxString arg(cmdLine.Mid(first, (i - first)));
 413
 414                 args.Add(arg);
 415                 count ++;
 416
 417                 if (i < len)
 418                     i ++; // Skip past 2nd quote
 419             }
 420             else // Unquoted argument
 421             {
 422                 int first = i;
 423                 while ((i < len) && !isspace(cmdLine.GetChar(i)))
 424                     i ++;
 425
 426                 wxString arg(cmdLine.Mid(first, (i - first)));
 427
 428                 args.Add(arg);
 429                 count ++;
 430             }
 431         }
 432     }
 433
 434     wxTheApp->argv = new char*[count + 1];
 435     for (i = 0; i < count; i++)
 436     {
 437         wxString arg(args[i]);
 438         wxTheApp->argv[i] = copystring((const char*)arg);
 439     }
 440     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 441     wxTheApp->argc = count;
 442 }
 443
 444 //// Cleans up any wxWindows internal structures left lying around
 445
 446 void wxApp::CleanUp()
 447 {
 448   //// COMMON CLEANUP
 449   wxModule::CleanUpModules();
 450
 451 #if wxUSE_WX_RESOURCES
 452   wxCleanUpResourceSystem();
 453
 454 //  wxDefaultResourceTable->ClearTable();
 455 #endif
 456
 457   // Indicate that the cursor can be freed,
 458   // so that cursor won't be deleted by deleting
 459   // the bitmap list before g_globalCursor goes out
 460   // of scope (double deletion of the cursor).
 461   wxSetCursor(wxNullCursor);
 462   delete g_globalCursor;
 463
 464   wxDeleteStockObjects() ;
 465
 466   // Destroy all GDI lists, etc.
 467   wxDeleteStockLists();
 468
 469   delete wxTheColourDatabase;
 470   wxTheColourDatabase = NULL;
 471
 472   wxBitmap::CleanUpHandlers();
 473
 474   delete[] wxBuffer;
 475   wxBuffer = NULL;
 476
 477   //// WINDOWS-SPECIFIC CLEANUP
 478
 479   wxSetKeyboardHook(FALSE);
 480
 481 #ifdef __WIN95__
 482   if (gs_hRichEdit != NULL)
 483     FreeLibrary(gs_hRichEdit);
 484 #endif
 485
 486 #if wxUSE_PENWINDOWS
 487   wxCleanUpPenWin();
 488 #endif
 489
 490   if (wxSTD_FRAME_ICON)
 491     DestroyIcon(wxSTD_FRAME_ICON);
 492   if (wxSTD_MDICHILDFRAME_ICON)
 493     DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 494   if (wxSTD_MDIPARENTFRAME_ICON)
 495     DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 496
 497   if (wxDEFAULT_FRAME_ICON)
 498     DestroyIcon(wxDEFAULT_FRAME_ICON);
 499   if (wxDEFAULT_MDICHILDFRAME_ICON)
 500     DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 501   if (wxDEFAULT_MDIPARENTFRAME_ICON)
 502     DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 503
 504   if ( wxDisableButtonBrush )
 505     ::DeleteObject( wxDisableButtonBrush ) ;
 506
 507 #ifndef __GNUWIN32__
 508   ::OleUninitialize();
 509 #endif
 510
 511 #if CTL3D
 512   Ctl3dUnregister(wxhInstance);
 513 #endif
 514
 515   if (wxWinHandleList)
 516     delete wxWinHandleList ;
 517
 518   wxClassInfo::CleanUpClasses();
 519
 520   delete wxTheApp;
 521   wxTheApp = NULL;
 522
 523 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 524   // At this point we want to check if there are any memory
 525   // blocks that aren't part of the wxDebugContext itself,
 526   // as a special case. Then when dumping we need to ignore
 527   // wxDebugContext, too.
 528   if (wxDebugContext::CountObjectsLeft() > 0)
 529   {
 530       wxLogDebug("There were memory leaks.");
 531       wxDebugContext::Dump();
 532       wxDebugContext::PrintStatistics();
 533   }
 534 //  wxDebugContext::SetStream(NULL, NULL);
 535 #endif
 536
 537   // do it as the very last thing because everything else can log messages
 538   wxLog::DontCreateOnDemand();
 539   delete wxLog::SetActiveTarget(NULL);
 540 }
 541
 542 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 543
 544 //// Main wxWindows entry point
 545 int wxEntry(WXHINSTANCE hInstance,
 546             WXHINSTANCE WXUNUSED(hPrevInstance),
 547             char *lpCmdLine,
 548             int nCmdShow,
 549             bool enterLoop)
 550 {
 551 #ifndef __WXDEBUG__ // take everything into a try-except block in release build
 552   try {
 553 #endif
 554
 555   wxhInstance = (HINSTANCE) hInstance;
 556
 557   if (!wxApp::Initialize())
 558     return 0;
 559
 560   // create the application object or ensure that one already exists
 561   if (!wxTheApp)
 562   {
 563     // The app may have declared a global application object, but we recommend
 564     // the IMPLEMENT_APP macro is used instead, which sets an initializer
 565     // function for delayed, dynamic app object construction.
 566     wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 567                  "No initializer - use IMPLEMENT_APP macro." );
 568
 569     wxTheApp = (*wxApp::GetInitializerFunction()) ();
 570   }
 571
 572   wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 573
 574   // save the WinMain() parameters
 575   wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 576   wxTheApp->m_nCmdShow = nCmdShow;
 577
 578   // GUI-specific initialisation. In fact on Windows we don't have any,
 579   // but this call is provided for compatibility across platforms.
 580   wxTheApp->OnInitGui() ;
 581
 582   int retValue = 0;
 583
 584   if ( wxTheApp->OnInit() )
 585   {
 586       if ( enterLoop )
 587       {
 588           retValue = wxTheApp->OnRun();
 589       }
 590   }
 591   //else: app initialization failed, so we skipped OnRun()
 592
 593   wxWindow *topWindow = wxTheApp->GetTopWindow();
 594   if ( topWindow )
 595   {
 596       // Forcibly delete the window.
 597       if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 598            topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 599       {
 600           topWindow->Close(TRUE);
 601           wxTheApp->DeletePendingObjects();
 602       }
 603       else
 604       {
 605           delete topWindow;
 606           wxTheApp->SetTopWindow(NULL);
 607       }
 608   }
 609
 610   wxTheApp->OnExit();
 611
 612   // flush the logged messages if any
 613   wxLog *pLog = wxLog::GetActiveTarget();
 614   if ( pLog != NULL && pLog->HasPendingMessages() )
 615     pLog->Flush();
 616
 617
 618   wxApp::CleanUp();
 619
 620   return retValue;
 621 #ifndef __WXDEBUG__ // catch exceptions only in release build
 622   }
 623   except ( EXCEPTION_EXECUTE_HANDLER ) {
 624     /*
 625     if ( wxTheApp )
 626       wxTheApp->OnFatalException();
 627     */
 628
 629     ::ExitProcess(3); // the same exit code as abort()
 630   }
 631 #endif //debug
 632 }
 633
 634 #else /*  _WINDLL  */
 635
 636 //// Entry point for DLLs
 637
 638 int wxEntry(WXHINSTANCE hInstance)
 639 {
 640   wxhInstance = (HINSTANCE) hInstance;
 641   wxApp::Initialize();
 642
 643   // The app may have declared a global application object, but we recommend
 644   // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 645   // for delayed, dynamic app object construction.
 646
 647   if (!wxTheApp)
 648   {
 649     if (!wxApp::GetInitializerFunction())
 650     {
 651       MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 652     return 0;
 653     }
 654
 655     wxTheApp = (* wxApp::GetInitializerFunction()) ();
 656   }
 657
 658   if (!wxTheApp) {
 659     MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 660     return 0;
 661   }
 662
 663   wxTheApp->argc = 0;
 664   wxTheApp->argv = NULL;
 665
 666   wxTheApp->OnInitGui();
 667
 668   wxTheApp->OnInit();
 669
 670   if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
 671     wxTheApp->GetTopWindow()->Show(TRUE);
 672   }
 673
 674   return 1;
 675 }
 676 #endif // _WINDLL
 677
 678 //// Static member initialization
 679
 680 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 681
 682 wxApp::wxApp()
 683 {
 684   m_topWindow = NULL;
 685   wxTheApp = this;
 686   m_className = "";
 687   m_wantDebugOutput = TRUE ;
 688   m_appName = "";
 689   argc = 0;
 690   argv = NULL;
 691 #ifdef __WXMSW__
 692   m_printMode = wxPRINT_WINDOWS;
 693 #else
 694   m_printMode = wxPRINT_POSTSCRIPT;
 695 #endif
 696   m_exitOnFrameDelete = TRUE;
 697   m_auto3D = TRUE;
 698 }
 699
 700 wxApp::~wxApp()
 701 {
 702   // Delete command-line args
 703   int i;
 704   for (i = 0; i < argc; i++)
 705   {
 706     delete[] argv[i];
 707   }
 708   delete[] argv;
 709 }
 710
 711 bool wxApp::Initialized()
 712 {
 713 #ifndef _WINDLL
 714   if (GetTopWindow())
 715     return TRUE;
 716   else
 717     return FALSE;
 718 #endif
 719 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 720   return TRUE;
 721 #endif
 722 }
 723
 724 /*
 725  * Get and process a message, returning FALSE if WM_QUIT
 726  * received.
 727  *
 728  */
 729 bool wxApp::DoMessage()
 730 {
 731   if (!::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0))
 732   {
 733     return FALSE;
 734   }
 735
 736   // Process the message
 737   if (!ProcessMessage((WXMSG *)&s_currentMsg))
 738   {
 739     ::TranslateMessage(&s_currentMsg);
 740     wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
 741     ::DispatchMessage(&s_currentMsg);
 742   }
 743   return TRUE;
 744 }
 745
 746 /*
 747  * Keep trying to process messages until WM_QUIT
 748  * received.
 749  *
 750  * If there are messages to be processed, they will all be
 751  * processed and OnIdle will not be called.
 752  * When there are no more messages, OnIdle is called.
 753  * If OnIdle requests more time,
 754  * it will be repeatedly called so long as there are no pending messages.
 755  * A 'feature' of this is that once OnIdle has decided that no more processing
 756  * is required, then it won't get processing time until further messages
 757  * are processed (it'll sit in DoMessage).
 758  */
 759
 760 int wxApp::MainLoop()
 761 {
 762   m_keepGoing = TRUE;
 763   while (m_keepGoing)
 764   {
 765     while (!::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 766            ProcessIdle()) {}
 767     if (!DoMessage())
 768       m_keepGoing = FALSE;
 769   }
 770
 771   return s_currentMsg.wParam;
 772 }
 773
 774 // Returns TRUE if more time is needed.
 775 bool wxApp::ProcessIdle()
 776 {
 777     wxIdleEvent event;
 778     event.SetEventObject(this);
 779     ProcessEvent(event);
 780
 781     return event.MoreRequested();
 782 }
 783
 784 void wxApp::ExitMainLoop()
 785 {
 786   m_keepGoing = FALSE;
 787 }
 788
 789 bool wxApp::Pending()
 790 {
 791   return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 792 }
 793
 794 void wxApp::Dispatch()
 795 {
 796     if (!DoMessage())
 797       m_keepGoing = FALSE;
 798 }
 799
 800 /*
 801  * Give all windows a chance to preprocess
 802  * the message. Some may have accelerator tables, or have
 803  * MDI complications.
 804  */
 805 bool wxApp::ProcessMessage(WXMSG *Msg)
 806 {
 807   MSG *msg = (MSG *)Msg;
 808
 809   HWND hWnd;
 810
 811   // Try translations first; find the youngest window with
 812   // a translation table.
 813   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 814   {
 815     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 816     if (wnd)
 817     {
 818        if (wnd->MSWTranslateMessage(Msg))
 819          return TRUE;
 820     }
 821   }
 822
 823   // Anyone for a non-translation message? Try youngest descendants first.
 824   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 825   {
 826     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 827     if (wnd)
 828     {
 829        if (wnd->MSWProcessMessage(Msg))
 830          return TRUE;
 831     }
 832   }
 833   return FALSE;
 834 }
 835
 836 void wxApp::OnIdle(wxIdleEvent& event)
 837 {
 838   static bool inOnIdle = FALSE;
 839
 840   // Avoid recursion (via ProcessEvent default case)
 841   if (inOnIdle)
 842     return;
 843
 844   inOnIdle = TRUE;
 845
 846   // 'Garbage' collection of windows deleted with Close().
 847   DeletePendingObjects();
 848
 849   // flush the logged messages if any
 850   wxLog *pLog = wxLog::GetActiveTarget();
 851   if ( pLog != NULL && pLog->HasPendingMessages() )
 852     pLog->Flush();
 853
 854   // Send OnIdle events to all windows
 855   bool needMore = SendIdleEvents();
 856 //  bool needMore = FALSE;
 857
 858   if (needMore)
 859     event.RequestMore(TRUE);
 860
 861   inOnIdle = FALSE;
 862 }
 863
 864 // Send idle event to all top-level windows
 865 bool wxApp::SendIdleEvents()
 866 {
 867     bool needMore = FALSE;
 868   wxNode* node = wxTopLevelWindows.First();
 869   while (node)
 870   {
 871     wxWindow* win = (wxWindow*) node->Data();
 872     if (SendIdleEvents(win))
 873             needMore = TRUE;
 874
 875     node = node->Next();
 876   }
 877     return needMore;
 878 }
 879
 880 // Send idle event to window and all subwindows
 881 bool wxApp::SendIdleEvents(wxWindow* win)
 882 {
 883   bool needMore = FALSE;
 884
 885   wxIdleEvent event;
 886   event.SetEventObject(win);
 887   win->GetEventHandler()->ProcessEvent(event);
 888
 889   if (event.MoreRequested())
 890     needMore = TRUE;
 891
 892   wxNode* node = win->GetChildren().First();
 893   while (node)
 894   {
 895     wxWindow* win = (wxWindow*) node->Data();
 896     if (SendIdleEvents(win))
 897       needMore = TRUE;
 898
 899     node = node->Next();
 900   }
 901   return needMore ;
 902 }
 903
 904 void wxApp::DeletePendingObjects()
 905 {
 906   wxNode *node = wxPendingDelete.First();
 907   while (node)
 908   {
 909     wxObject *obj = (wxObject *)node->Data();
 910
 911     delete obj;
 912
 913     if (wxPendingDelete.Member(obj))
 914       delete node;
 915
 916     // Deleting one object may have deleted other pending
 917     // objects, so start from beginning of list again.
 918     node = wxPendingDelete.First();
 919   }
 920 }
 921
 922 void wxApp::OnEndSession(wxCloseEvent& event)
 923 {
 924     if (GetTopWindow())
 925         GetTopWindow()->Close(TRUE);
 926 }
 927
 928 // Default behaviour: close the application with prompts. The
 929 // user can veto the close, and therefore the end session.
 930 void wxApp::OnQueryEndSession(wxCloseEvent& event)
 931 {
 932     if (GetTopWindow())
 933     {
 934         if (!GetTopWindow()->Close(!event.CanVeto()))
 935             event.Veto(TRUE);
 936     }
 937 }
 938
 939 wxLog* wxApp::CreateLogTarget()
 940 {
 941     return new wxLogGui;
 942 }
 943
 944 wxWindow* wxApp::GetTopWindow() const
 945 {
 946     if (m_topWindow)
 947         return m_topWindow;
 948     else if (wxTopLevelWindows.Number() > 0)
 949         return (wxWindow*) wxTopLevelWindows.First()->Data();
 950     else
 951         return NULL;
 952 }
 953
 954 int wxApp::GetComCtl32Version() const
 955 {
 956     // have we loaded COMCTL32 yet?
 957     HMODULE theModule = ::GetModuleHandle("COMCTL32");
 958     int version = 0;
 959
 960     // if so, then we can check for the version
 961     if (theModule)
 962     {
 963         // InitCommonControlsEx is unique to 4.7 and later
 964         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
 965
 966         if (! theProc)
 967         {                    // not found, must be 4.00
 968       version = 400;
 969         }
 970         else
 971         {
 972       // The following symbol are unique to 4.71
 973       //   DllInstall
 974       //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
 975       //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
 976       //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
 977       //   FlatSB_ShowScrollBar
 978       //   _DrawIndirectImageList _DuplicateImageList
 979       //   InitializeFlatSB
 980       //   UninitializeFlatSB
 981       // we could check for any of these - I chose DllInstall
 982       FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
 983       if (! theProc)
 984       {
 985         // not found, must be 4.70
 986         version = 470;
 987       }
 988       else
 989       {                         // found, must be 4.71
 990         version = 471;
 991       }
 992         }
 993     }
 994     return version;
 995 }
 996
 997 void wxExit()
 998 {
 999   wxApp::CleanUp();
1000   FatalAppExit(0, "Fatal error: exiting");
1001 }
1002
1003 // Yield to incoming messages
1004 bool wxYield()
1005 {
1006   MSG msg;
1007   // We want to go back to the main message loop
1008   // if we see a WM_QUIT. (?)
1009   while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1010   {
1011     if (!wxTheApp->DoMessage())
1012       break;
1013   }
1014
1015   return TRUE;
1016 }
1017
1018 HINSTANCE wxGetInstance()
1019 {
1020   return wxhInstance;
1021 }
1022
1023 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1024 // if in a separate file. So include it here to ensure it's linked.
1025 #if (defined(_MSC_VER) && !defined(__WIN32__)) || defined(__GNUWIN32__)
1026   #include "main.cpp"
1027 #endif