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