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 <ole2.h>
  47 #include <string.h>
  48 #include <ctype.h>
  49
  50 #if defined(__WIN95__) && !defined(__GNUWIN32__)
  51   #include <commctrl.h>
  52 #endif
  53
  54 // use debug CRT functions for memory leak detections in VC++ if we're not
  55 // using wxWindows own methods
  56 #if defined(__WXDEBUG__) && defined(_MSC_VER) && !wxUSE_GLOBAL_MEMORY_OPERATORS && !defined(__NO_VC_CRTDBG__)
  57     #define wxUSE_VC_CRTDBG
  58 #else
  59     #undef wxUSE_VC_CRTDBG
  60 #endif
  61
  62 #ifdef wxUSE_VC_CRTDBG
  63   // VC++ uses this macro as debug/release mode indicator
  64   #ifndef _DEBUG
  65     #define _DEBUG
  66   #endif
  67
  68   /* Need to undef new if including crtdbg.h */
  69   #ifdef new
  70   #undef new
  71   #endif
  72
  73   #include <crtdbg.h>
  74
  75   #if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
  76   #define new new(__FILE__,__LINE__)
  77   #endif
  78
  79 #endif
  80
  81 extern char *wxBuffer;
  82 extern char *wxOsVersion;
  83 extern wxList *wxWinHandleList;
  84 extern wxList wxPendingDelete;
  85 extern void wxSetKeyboardHook(bool doIt);
  86 extern wxCursor *g_globalCursor;
  87
  88 HINSTANCE wxhInstance = 0;
  89 static MSG s_currentMsg;
  90 wxApp *wxTheApp = NULL;
  91
  92 // @@ why not const? and not static?
  93 char wxFrameClassName[]         = "wxFrameClass";
  94 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
  95 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
  96 char wxPanelClassName[]         = "wxPanelClass";
  97 char wxCanvasClassName[]        = "wxCanvasClass";
  98
  99 HICON wxSTD_FRAME_ICON = NULL;
 100 HICON wxSTD_MDICHILDFRAME_ICON = NULL;
 101 HICON wxSTD_MDIPARENTFRAME_ICON = NULL;
 102
 103 HICON wxDEFAULT_FRAME_ICON = NULL;
 104 HICON wxDEFAULT_MDICHILDFRAME_ICON = NULL;
 105 HICON wxDEFAULT_MDIPARENTFRAME_ICON = NULL;
 106
 107 HBRUSH wxDisableButtonBrush = 0;
 108
 109 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 110
 111 #if !USE_SHARED_LIBRARY
 112   IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 113
 114   BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 115       EVT_IDLE(wxApp::OnIdle)
 116       EVT_END_SESSION(wxApp::OnEndSession)
 117       EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 118   END_EVENT_TABLE()
 119 #endif
 120
 121 long wxApp::sm_lastMessageTime = 0;
 122
 123 #ifdef __WIN95__
 124   static HINSTANCE gs_hRichEdit = NULL;
 125 #endif
 126
 127 //// Initialize
 128
 129 bool wxApp::Initialize()
 130 {
 131     // Some people may wish to use this, but
 132     // probably it shouldn't be here by default.
 133 #ifdef __WXDEBUG__
 134 //    wxRedirectIOToConsole();
 135 #endif
 136
 137     wxBuffer = new char[1500];
 138
 139 #ifdef wxUSE_VC_CRTDBG
 140     // do check for memory leaks on program exit
 141     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 142     //  deallocated memory which may be used to simulate low-memory condition)
 143     _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
 144 #endif // debug build under MS VC++
 145
 146     wxClassInfo::InitializeClasses();
 147
 148 #if wxUSE_RESOURCES
 149     wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 150 #endif
 151
 152     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 153     wxTheColourDatabase->Initialize();
 154
 155     wxInitializeStockLists();
 156     wxInitializeStockObjects();
 157
 158 #if wxUSE_WX_RESOURCES
 159     wxInitializeResourceSystem();
 160 #endif
 161
 162     wxBitmap::InitStandardHandlers();
 163
 164 #if defined(__WIN95__)
 165     InitCommonControls();
 166     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 167
 168     if (gs_hRichEdit == NULL)
 169     {
 170       wxMessageBox("Could not initialise Rich Edit DLL");
 171     }
 172 #endif
 173
 174     int iMsg = 96;
 175
 176    // for OLE, enlarge message queue to be as large as possible
 177    while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 178
 179 /*
 180     DWORD dwOleVer;
 181     dwOleVer = CoBuildVersion();
 182
 183     // check the OLE library version
 184     if (rmm != HIWORD(dwOleVer))
 185     {
 186         wxMessageBox("Incorrect version of OLE libraries.");
 187         return FALSE;
 188     }
 189 */
 190
 191 #ifndef __GNUWIN32__
 192     // we need to initialize OLE library
 193     if ( FAILED(::OleInitialize(NULL)) )
 194       wxFatalError(_("Cannot initialize OLE"));
 195 #endif
 196
 197 #if CTL3D
 198     if (!Ctl3dRegister(wxhInstance))
 199       wxFatalError("Cannot register CTL3D");
 200
 201     Ctl3dAutoSubclass(wxhInstance);
 202 #endif
 203
 204     g_globalCursor = new wxCursor;
 205
 206     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 207     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 208     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 209
 210     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 211     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 212     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 213
 214     RegisterWindowClasses();
 215
 216     // Create the brush for disabling bitmap buttons
 217
 218     LOGBRUSH lb ;
 219     lb.lbStyle = BS_PATTERN;
 220     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 221     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 222     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 223
 224 #if wxUSE_PENWINDOWS
 225     wxRegisterPenWin();
 226 #endif
 227
 228     wxWinHandleList = new wxList(wxKEY_INTEGER);
 229
 230     // This is to foil optimizations in Visual C++ that
 231     // throw out dummy.obj.
 232 #if (_MSC_VER >= 800) && !defined(WXMAKINGDLL)
 233     extern char wxDummyChar;
 234     if (wxDummyChar) wxDummyChar++;
 235 #endif
 236
 237     wxSetKeyboardHook(TRUE);
 238
 239     wxModule::RegisterModules();
 240     if (!wxModule::InitializeModules())
 241         return FALSE;
 242     return TRUE;
 243 }
 244
 245 //// RegisterWindowClasses
 246
 247 bool wxApp::RegisterWindowClasses()
 248 {
 249 ///////////////////////////////////////////////////////////////////////
 250 // Register the frame window class.
 251   WNDCLASS wndclass;   // Structure used to register Windows class.
 252
 253   wndclass.style         = CS_HREDRAW | CS_VREDRAW;
 254   wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 255   wndclass.cbClsExtra    = 0;
 256   wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 257   wndclass.hInstance     = wxhInstance;
 258   wndclass.hIcon         = NULL;        // wxSTD_FRAME_ICON;
 259   wndclass.hCursor       = LoadCursor( NULL, IDC_ARROW );
 260   wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 261 //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 262   wndclass.lpszMenuName  = NULL;
 263 #ifdef _MULTIPLE_INSTANCES
 264   sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 265 #endif
 266   wndclass.lpszClassName = wxFrameClassName;
 267
 268   if (!RegisterClass( &wndclass ))
 269   {
 270     // wxFatalError("Can't register Frame Window class");
 271   }
 272
 273 ///////////////////////////////////////////////////////////////////////
 274 // Register the MDI frame window class.
 275   WNDCLASS wndclass1;   // Structure used to register Windows class.
 276
 277   wndclass1.style         = CS_HREDRAW | CS_VREDRAW;
 278   wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 279   wndclass1.cbClsExtra    = 0;
 280   wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 281   wndclass1.hInstance     = wxhInstance;
 282   wndclass1.hIcon         = NULL; // wxSTD_MDIPARENTFRAME_ICON;
 283   wndclass1.hCursor       = LoadCursor( NULL, IDC_ARROW );
 284 //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 285   wndclass1.hbrBackground = NULL;
 286   wndclass1.lpszMenuName  = NULL;
 287
 288   wndclass1.lpszClassName = wxMDIFrameClassName;
 289   if (!RegisterClass( &wndclass1 ))
 290   {
 291 //    wxFatalError("Can't register MDI Frame window class");
 292 //  return FALSE;
 293   }
 294
 295 ///////////////////////////////////////////////////////////////////////
 296 // Register the MDI child frame window class.
 297   WNDCLASS wndclass4;   // Structure used to register Windows class.
 298
 299   wndclass4.style         = CS_HREDRAW | CS_VREDRAW;
 300   wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 301   wndclass4.cbClsExtra    = 0;
 302   wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 303   wndclass4.hInstance     = wxhInstance;
 304   wndclass4.hIcon         = NULL;       // wxSTD_MDICHILDFRAME_ICON;
 305   wndclass4.hCursor       = LoadCursor( NULL, IDC_ARROW );
 306   // TODO: perhaps this should be NULL so that Windows doesn't
 307   // paint the background itself (would OnEraseBackground duplicate
 308   // this?)
 309   wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 310 //  wndclass4.hbrBackground = NULL;
 311   wndclass4.lpszMenuName  = NULL;
 312   wndclass4.lpszClassName = wxMDIChildFrameClassName;
 313
 314   if (!RegisterClass( &wndclass4 ))
 315   {
 316 //   wxFatalError("Can't register MDI child frame window class");
 317 //   return FALSE;
 318   }
 319
 320 ///////////////////////////////////////////////////////////////////////
 321 // Register the panel window class.
 322   WNDCLASS wndclass2;   // Structure used to register Windows class.
 323   memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 324   // Use CS_OWNDC to avoid messing about restoring the context
 325   // for every graphic operation.
 326   wndclass2.style         = CS_HREDRAW | CS_VREDRAW;
 327   wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 328   wndclass2.cbClsExtra    = 0;
 329   wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 330   wndclass2.hInstance     = wxhInstance;
 331   wndclass2.hIcon         = NULL;
 332   wndclass2.hCursor       = NULL;
 333 //  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
 334   wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 335   wndclass2.lpszMenuName  = NULL;
 336   wndclass2.lpszClassName = wxPanelClassName;
 337   if (!RegisterClass( &wndclass2 ))
 338   {
 339 //   wxFatalError("Can't register Panel Window class");
 340 //   return FALSE;
 341   }
 342
 343 ///////////////////////////////////////////////////////////////////////
 344 // Register the canvas and textsubwindow class name
 345   WNDCLASS wndclass3;   // Structure used to register Windows class.
 346   memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
 347   // Use CS_OWNDC to avoid messing about restoring the context
 348   // for every graphic operation.
 349 //  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
 350   // wxWin 2.0
 351   wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 352   wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
 353   wndclass3.cbClsExtra    = 0;
 354   wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
 355   wndclass3.hInstance     = wxhInstance;
 356   wndclass3.hIcon         = NULL;
 357   wndclass3.hCursor       = NULL;
 358 //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 359   wndclass3.hbrBackground = NULL;
 360   wndclass3.lpszMenuName  = NULL;
 361   wndclass3.lpszClassName = wxCanvasClassName;
 362   if (!RegisterClass( &wndclass3))
 363   {
 364 //   wxFatalError("Can't register Canvas class");
 365 //   return FALSE;
 366   }
 367
 368   return TRUE;
 369 }
 370
 371 //// Convert Windows to argc, argv style
 372
 373 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 374 {
 375     wxStringList args;
 376
 377     wxString cmdLine(lpCmdLine);
 378     int count = 0;
 379
 380     // Get application name
 381     char name[260]; // 260 is MAX_PATH value from windef.h
 382     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 383
 384     // GNUWIN32 already fills in the first arg with the application name.
 385 #if !defined(__GNUWIN32__)
 386     args.Add(name);
 387     count ++;
 388 #endif
 389
 390     strcpy(name, wxFileNameFromPath(name));
 391     wxStripExtension(name);
 392     wxTheApp->SetAppName(name);
 393
 394     // Break up string
 395     // Treat strings enclosed in double-quotes as single arguments
 396     int i = 0;
 397     int len = cmdLine.Length();
 398     while (i < len)
 399     {
 400         // Skip whitespace
 401         while ((i < len) && isspace(cmdLine.GetChar(i)))
 402             i ++;
 403
 404         if (i < len)
 405         {
 406             if (cmdLine.GetChar(i) == '"') // We found the start of a string
 407             {
 408                 i ++;
 409                 int first = i;
 410                 while ((i < len) && (cmdLine.GetChar(i) != '"'))
 411                     i ++;
 412
 413                 wxString arg(cmdLine.Mid(first, (i - first)));
 414
 415                 args.Add(arg);
 416                 count ++;
 417
 418                 if (i < len)
 419                     i ++; // Skip past 2nd quote
 420             }
 421             else // Unquoted argument
 422             {
 423                 int first = i;
 424                 while ((i < len) && !isspace(cmdLine.GetChar(i)))
 425                     i ++;
 426
 427                 wxString arg(cmdLine.Mid(first, (i - first)));
 428
 429                 args.Add(arg);
 430                 count ++;
 431             }
 432         }
 433     }
 434
 435     wxTheApp->argv = new char*[count + 1];
 436     for (i = 0; i < count; i++)
 437     {
 438         wxString arg(args[i]);
 439         wxTheApp->argv[i] = copystring((const char*)arg);
 440     }
 441     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 442     wxTheApp->argc = count;
 443 }
 444
 445 //// Cleans up any wxWindows internal structures left lying around
 446
 447 void wxApp::CleanUp()
 448 {
 449   //// COMMON CLEANUP
 450   wxModule::CleanUpModules();
 451
 452 #if wxUSE_WX_RESOURCES
 453   wxCleanUpResourceSystem();
 454
 455 //  wxDefaultResourceTable->ClearTable();
 456 #endif
 457
 458   // Indicate that the cursor can be freed,
 459   // so that cursor won't be deleted by deleting
 460   // the bitmap list before g_globalCursor goes out
 461   // of scope (double deletion of the cursor).
 462   wxSetCursor(wxNullCursor);
 463   delete g_globalCursor;
 464
 465   wxDeleteStockObjects() ;
 466
 467   // Destroy all GDI lists, etc.
 468   wxDeleteStockLists();
 469
 470   delete wxTheColourDatabase;
 471   wxTheColourDatabase = NULL;
 472
 473   wxBitmap::CleanUpHandlers();
 474
 475   delete[] wxBuffer;
 476   wxBuffer = NULL;
 477
 478   //// WINDOWS-SPECIFIC CLEANUP
 479
 480   wxSetKeyboardHook(FALSE);
 481
 482 #ifdef __WIN95__
 483   if (gs_hRichEdit != NULL)
 484     FreeLibrary(gs_hRichEdit);
 485 #endif
 486
 487 #if wxUSE_PENWINDOWS
 488   wxCleanUpPenWin();
 489 #endif
 490
 491   if (wxSTD_FRAME_ICON)
 492     DestroyIcon(wxSTD_FRAME_ICON);
 493   if (wxSTD_MDICHILDFRAME_ICON)
 494     DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 495   if (wxSTD_MDIPARENTFRAME_ICON)
 496     DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 497
 498   if (wxDEFAULT_FRAME_ICON)
 499     DestroyIcon(wxDEFAULT_FRAME_ICON);
 500   if (wxDEFAULT_MDICHILDFRAME_ICON)
 501     DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 502   if (wxDEFAULT_MDIPARENTFRAME_ICON)
 503     DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 504
 505   if ( wxDisableButtonBrush )
 506     ::DeleteObject( wxDisableButtonBrush ) ;
 507
 508 #ifndef __GNUWIN32__
 509   ::OleUninitialize();
 510 #endif
 511
 512 #if CTL3D
 513   Ctl3dUnregister(wxhInstance);
 514 #endif
 515
 516   if (wxWinHandleList)
 517     delete wxWinHandleList ;
 518
 519   wxClassInfo::CleanUpClasses();
 520
 521   delete wxTheApp;
 522   wxTheApp = NULL;
 523
 524 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 525   // At this point we want to check if there are any memory
 526   // blocks that aren't part of the wxDebugContext itself,
 527   // as a special case. Then when dumping we need to ignore
 528   // wxDebugContext, too.
 529   if (wxDebugContext::CountObjectsLeft() > 0)
 530   {
 531       wxLogDebug("There were memory leaks.");
 532       wxDebugContext::Dump();
 533       wxDebugContext::PrintStatistics();
 534   }
 535 //  wxDebugContext::SetStream(NULL, NULL);
 536 #endif
 537
 538   // do it as the very last thing because everything else can log messages
 539   wxLog::DontCreateOnDemand();
 540   delete wxLog::SetActiveTarget(NULL);
 541 }
 542
 543 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 544
 545 //// Main wxWindows entry point
 546 int wxEntry(WXHINSTANCE hInstance,
 547             WXHINSTANCE WXUNUSED(hPrevInstance),
 548             char *lpCmdLine,
 549             int nCmdShow,
 550             bool enterLoop)
 551 {
 552 #ifndef __WXDEBUG__ // take everything into a try-except block in release build
 553   try {
 554 #endif
 555
 556   wxhInstance = (HINSTANCE) hInstance;
 557
 558   if (!wxApp::Initialize())
 559     return 0;
 560
 561   // create the application object or ensure that one already exists
 562   if (!wxTheApp)
 563   {
 564     // The app may have declared a global application object, but we recommend
 565     // the IMPLEMENT_APP macro is used instead, which sets an initializer
 566     // function for delayed, dynamic app object construction.
 567     wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 568                  "No initializer - use IMPLEMENT_APP macro." );
 569
 570     wxTheApp = (*wxApp::GetInitializerFunction()) ();
 571   }
 572
 573   wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 574
 575   // save the WinMain() parameters
 576   wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 577   wxTheApp->m_nCmdShow = nCmdShow;
 578
 579   // GUI-specific initialisation. In fact on Windows we don't have any,
 580   // but this call is provided for compatibility across platforms.
 581   wxTheApp->OnInitGui() ;
 582
 583   int retValue = 0;
 584
 585   if ( wxTheApp->OnInit() )
 586   {
 587       if ( enterLoop )
 588       {
 589           retValue = wxTheApp->OnRun();
 590       }
 591   }
 592   //else: app initialization failed, so we skipped OnRun()
 593
 594   wxWindow *topWindow = wxTheApp->GetTopWindow();
 595   if ( topWindow )
 596   {
 597       // Forcibly delete the window.
 598       if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 599            topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 600       {
 601           topWindow->Close(TRUE);
 602           wxTheApp->DeletePendingObjects();
 603       }
 604       else
 605       {
 606           delete topWindow;
 607           wxTheApp->SetTopWindow(NULL);
 608       }
 609   }
 610
 611   wxTheApp->OnExit();
 612
 613   // flush the logged messages if any
 614   wxLog *pLog = wxLog::GetActiveTarget();
 615   if ( pLog != NULL && pLog->HasPendingMessages() )
 616     pLog->Flush();
 617
 618
 619   wxApp::CleanUp();
 620
 621   return retValue;
 622 #ifndef __WXDEBUG__ // catch exceptions only in release build
 623   }
 624   except ( EXCEPTION_EXECUTE_HANDLER ) {
 625     /*
 626     if ( wxTheApp )
 627       wxTheApp->OnFatalException();
 628     */
 629
 630     ::ExitProcess(3); // the same exit code as abort()
 631   }
 632 #endif //debug
 633 }
 634
 635 #else /*  _WINDLL  */
 636
 637 //// Entry point for DLLs
 638
 639 int wxEntry(WXHINSTANCE hInstance)
 640 {
 641   wxhInstance = (HINSTANCE) hInstance;
 642   wxApp::Initialize();
 643
 644   // The app may have declared a global application object, but we recommend
 645   // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 646   // for delayed, dynamic app object construction.
 647
 648   if (!wxTheApp)
 649   {
 650     if (!wxApp::GetInitializerFunction())
 651     {
 652       MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 653     return 0;
 654     }
 655
 656     wxTheApp = (* wxApp::GetInitializerFunction()) ();
 657   }
 658
 659   if (!wxTheApp) {
 660     MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 661     return 0;
 662   }
 663
 664   wxTheApp->argc = 0;
 665   wxTheApp->argv = NULL;
 666
 667   wxTheApp->OnInitGui();
 668
 669   wxTheApp->OnInit();
 670
 671   if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
 672     wxTheApp->GetTopWindow()->Show(TRUE);
 673   }
 674
 675   return 1;
 676 }
 677 #endif // _WINDLL
 678
 679 //// Static member initialization
 680
 681 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 682
 683 wxApp::wxApp()
 684 {
 685   m_topWindow = NULL;
 686   wxTheApp = this;
 687   m_className = "";
 688   m_wantDebugOutput = TRUE ;
 689   m_appName = "";
 690   argc = 0;
 691   argv = NULL;
 692 #ifdef __WXMSW__
 693   m_printMode = wxPRINT_WINDOWS;
 694 #else
 695   m_printMode = wxPRINT_POSTSCRIPT;
 696 #endif
 697   m_exitOnFrameDelete = TRUE;
 698   m_auto3D = TRUE;
 699 }
 700
 701 wxApp::~wxApp()
 702 {
 703   // Delete command-line args
 704   int i;
 705   for (i = 0; i < argc; i++)
 706   {
 707     delete[] argv[i];
 708   }
 709   delete[] argv;
 710 }
 711
 712 bool wxApp::Initialized()
 713 {
 714 #ifndef _WINDLL
 715   if (GetTopWindow())
 716     return TRUE;
 717   else
 718     return FALSE;
 719 #endif
 720 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 721   return TRUE;
 722 #endif
 723 }
 724
 725 /*
 726  * Get and process a message, returning FALSE if WM_QUIT
 727  * received.
 728  *
 729  */
 730 bool wxApp::DoMessage()
 731 {
 732   if (!::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0))
 733   {
 734     return FALSE;
 735   }
 736
 737   // Process the message
 738   if (!ProcessMessage((WXMSG *)&s_currentMsg))
 739   {
 740     ::TranslateMessage(&s_currentMsg);
 741     wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
 742     ::DispatchMessage(&s_currentMsg);
 743   }
 744   return TRUE;
 745 }
 746
 747 /*
 748  * Keep trying to process messages until WM_QUIT
 749  * received.
 750  *
 751  * If there are messages to be processed, they will all be
 752  * processed and OnIdle will not be called.
 753  * When there are no more messages, OnIdle is called.
 754  * If OnIdle requests more time,
 755  * it will be repeatedly called so long as there are no pending messages.
 756  * A 'feature' of this is that once OnIdle has decided that no more processing
 757  * is required, then it won't get processing time until further messages
 758  * are processed (it'll sit in DoMessage).
 759  */
 760
 761 int wxApp::MainLoop()
 762 {
 763   m_keepGoing = TRUE;
 764   while (m_keepGoing)
 765   {
 766     while (!::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 767            ProcessIdle()) {}
 768     if (!DoMessage())
 769       m_keepGoing = FALSE;
 770   }
 771
 772   return s_currentMsg.wParam;
 773 }
 774
 775 // Returns TRUE if more time is needed.
 776 bool wxApp::ProcessIdle()
 777 {
 778     wxIdleEvent event;
 779     event.SetEventObject(this);
 780     ProcessEvent(event);
 781
 782     return event.MoreRequested();
 783 }
 784
 785 void wxApp::ExitMainLoop()
 786 {
 787   m_keepGoing = FALSE;
 788 }
 789
 790 bool wxApp::Pending()
 791 {
 792   return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 793 }
 794
 795 void wxApp::Dispatch()
 796 {
 797     if (!DoMessage())
 798       m_keepGoing = FALSE;
 799 }
 800
 801 /*
 802  * Give all windows a chance to preprocess
 803  * the message. Some may have accelerator tables, or have
 804  * MDI complications.
 805  */
 806 bool wxApp::ProcessMessage(WXMSG *Msg)
 807 {
 808   MSG *msg = (MSG *)Msg;
 809
 810   HWND hWnd;
 811
 812   // Try translations first; find the youngest window with
 813   // a translation table.
 814   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 815   {
 816     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 817     if (wnd)
 818     {
 819        if (wnd->MSWTranslateMessage(Msg))
 820          return TRUE;
 821     }
 822   }
 823
 824   // Anyone for a non-translation message? Try youngest descendants first.
 825   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 826   {
 827     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 828     if (wnd)
 829     {
 830        if (wnd->MSWProcessMessage(Msg))
 831          return TRUE;
 832     }
 833   }
 834   return FALSE;
 835 }
 836
 837 void wxApp::OnIdle(wxIdleEvent& event)
 838 {
 839   static bool inOnIdle = FALSE;
 840
 841   // Avoid recursion (via ProcessEvent default case)
 842   if (inOnIdle)
 843     return;
 844
 845   inOnIdle = TRUE;
 846
 847   // 'Garbage' collection of windows deleted with Close().
 848   DeletePendingObjects();
 849
 850   // flush the logged messages if any
 851   wxLog *pLog = wxLog::GetActiveTarget();
 852   if ( pLog != NULL && pLog->HasPendingMessages() )
 853     pLog->Flush();
 854
 855   // Send OnIdle events to all windows
 856   bool needMore = SendIdleEvents();
 857 //  bool needMore = FALSE;
 858
 859   if (needMore)
 860     event.RequestMore(TRUE);
 861
 862   inOnIdle = FALSE;
 863 }
 864
 865 // Send idle event to all top-level windows
 866 bool wxApp::SendIdleEvents()
 867 {
 868     bool needMore = FALSE;
 869   wxNode* node = wxTopLevelWindows.First();
 870   while (node)
 871   {
 872     wxWindow* win = (wxWindow*) node->Data();
 873     if (SendIdleEvents(win))
 874             needMore = TRUE;
 875
 876     node = node->Next();
 877   }
 878     return needMore;
 879 }
 880
 881 // Send idle event to window and all subwindows
 882 bool wxApp::SendIdleEvents(wxWindow* win)
 883 {
 884   bool needMore = FALSE;
 885
 886   wxIdleEvent event;
 887   event.SetEventObject(win);
 888   win->GetEventHandler()->ProcessEvent(event);
 889
 890   if (event.MoreRequested())
 891     needMore = TRUE;
 892
 893   wxNode* node = win->GetChildren().First();
 894   while (node)
 895   {
 896     wxWindow* win = (wxWindow*) node->Data();
 897     if (SendIdleEvents(win))
 898       needMore = TRUE;
 899
 900     node = node->Next();
 901   }
 902   return needMore ;
 903 }
 904
 905 void wxApp::DeletePendingObjects()
 906 {
 907   wxNode *node = wxPendingDelete.First();
 908   while (node)
 909   {
 910     wxObject *obj = (wxObject *)node->Data();
 911
 912     delete obj;
 913
 914     if (wxPendingDelete.Member(obj))
 915       delete node;
 916
 917     // Deleting one object may have deleted other pending
 918     // objects, so start from beginning of list again.
 919     node = wxPendingDelete.First();
 920   }
 921 }
 922
 923 void wxApp::OnEndSession(wxCloseEvent& event)
 924 {
 925     if (GetTopWindow())
 926         GetTopWindow()->Close(TRUE);
 927 }
 928
 929 // Default behaviour: close the application with prompts. The
 930 // user can veto the close, and therefore the end session.
 931 void wxApp::OnQueryEndSession(wxCloseEvent& event)
 932 {
 933     if (GetTopWindow())
 934     {
 935         if (!GetTopWindow()->Close(!event.CanVeto()))
 936             event.Veto(TRUE);
 937     }
 938 }
 939
 940 wxLog* wxApp::CreateLogTarget()
 941 {
 942     return new wxLogGui;
 943 }
 944
 945 wxWindow* wxApp::GetTopWindow() const
 946 {
 947     if (m_topWindow)
 948         return m_topWindow;
 949     else if (wxTopLevelWindows.Number() > 0)
 950         return (wxWindow*) wxTopLevelWindows.First()->Data();
 951     else
 952         return NULL;
 953 }
 954
 955 int wxApp::GetComCtl32Version() const
 956 {
 957     // have we loaded COMCTL32 yet?
 958     HMODULE theModule = ::GetModuleHandle("COMCTL32");
 959     int version = 0;
 960
 961     // if so, then we can check for the version
 962     if (theModule)
 963     {
 964         // InitCommonControlsEx is unique to 4.7 and later
 965         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
 966
 967         if (! theProc)
 968         {                    // not found, must be 4.00
 969       version = 400;
 970         }
 971         else
 972         {
 973       // The following symbol are unique to 4.71
 974       //   DllInstall
 975       //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
 976       //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
 977       //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
 978       //   FlatSB_ShowScrollBar
 979       //   _DrawIndirectImageList _DuplicateImageList
 980       //   InitializeFlatSB
 981       //   UninitializeFlatSB
 982       // we could check for any of these - I chose DllInstall
 983       FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
 984       if (! theProc)
 985       {
 986         // not found, must be 4.70
 987         version = 470;
 988       }
 989       else
 990       {                         // found, must be 4.71
 991         version = 471;
 992       }
 993         }
 994     }
 995     return version;
 996 }
 997
 998 void wxExit()
 999 {
1000   wxApp::CleanUp();
1001   FatalAppExit(0, "Fatal error: exiting");
1002 }
1003
1004 // Yield to incoming messages
1005 bool wxYield()
1006 {
1007   MSG msg;
1008   // We want to go back to the main message loop
1009   // if we see a WM_QUIT. (?)
1010   while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1011   {
1012     if (!wxTheApp->DoMessage())
1013       break;
1014   }
1015
1016   return TRUE;
1017 }
1018
1019 HINSTANCE wxGetInstance()
1020 {
1021   return wxhInstance;
1022 }
1023
1024 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1025 // if in a separate file. So include it here to ensure it's linked.
1026 #if (defined(_MSC_VER) && !defined(__WIN32__)) || defined(__GNUWIN32__)
1027   #include "main.cpp"
1028 #endif