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_THREADS
  43 #include "wx/thread.h"
  44 #endif
  45
  46 #if wxUSE_WX_RESOURCES
  47   #include "wx/resource.h"
  48 #endif
  49
  50 // To UG: there's no point in putting this #if here
  51 // if you don't do the same for the Ole calls further down.
  52 // Also, OLE is used not just for drag and drop (it's used by automatn.cpp).
  53 // #if wxUSE_DRAG_AND_DROP
  54 #ifndef __GNUWIN32__
  55 #include <ole2.h>
  56 #endif
  57 // #endif
  58
  59 #include <string.h>
  60 #include <ctype.h>
  61
  62 #if defined(__WIN95__) && !defined(__GNUWIN32__)
  63   #include <commctrl.h>
  64 #endif
  65
  66 // use debug CRT functions for memory leak detections in VC++ if we're not
  67 // using wxWindows own methods
  68 #if defined(__WXDEBUG__) && defined(_MSC_VER) && !wxUSE_GLOBAL_MEMORY_OPERATORS && !defined(__NO_VC_CRTDBG__)
  69     #define wxUSE_VC_CRTDBG
  70 #else
  71     #undef wxUSE_VC_CRTDBG
  72 #endif
  73
  74 #ifdef wxUSE_VC_CRTDBG
  75   // VC++ uses this macro as debug/release mode indicator
  76   #ifndef _DEBUG
  77     #define _DEBUG
  78   #endif
  79
  80   /* Need to undef new if including crtdbg.h */
  81   #ifdef new
  82   #undef new
  83   #endif
  84
  85   #include <crtdbg.h>
  86
  87   #if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
  88   #define new new(__FILE__,__LINE__)
  89   #endif
  90
  91 #endif
  92
  93 extern char *wxBuffer;
  94 extern char *wxOsVersion;
  95 extern wxList *wxWinHandleList;
  96 extern wxList wxPendingDelete;
  97 extern void wxSetKeyboardHook(bool doIt);
  98 extern wxCursor *g_globalCursor;
  99
 100 HINSTANCE wxhInstance = 0;
 101 static MSG s_currentMsg;
 102 wxApp *wxTheApp = NULL;
 103
 104 // @@ why not const? and not static?
 105 char wxFrameClassName[]         = "wxFrameClass";
 106 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
 107 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
 108 char wxPanelClassName[]         = "wxPanelClass";
 109 char wxCanvasClassName[]        = "wxCanvasClass";
 110
 111 HICON wxSTD_FRAME_ICON = NULL;
 112 HICON wxSTD_MDICHILDFRAME_ICON = NULL;
 113 HICON wxSTD_MDIPARENTFRAME_ICON = NULL;
 114
 115 HICON wxDEFAULT_FRAME_ICON = NULL;
 116 HICON wxDEFAULT_MDICHILDFRAME_ICON = NULL;
 117 HICON wxDEFAULT_MDIPARENTFRAME_ICON = NULL;
 118
 119 HBRUSH wxDisableButtonBrush = 0;
 120
 121 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 122
 123 #if !USE_SHARED_LIBRARY
 124   IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 125
 126   BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 127       EVT_IDLE(wxApp::OnIdle)
 128       EVT_END_SESSION(wxApp::OnEndSession)
 129       EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 130   END_EVENT_TABLE()
 131 #endif
 132
 133 long wxApp::sm_lastMessageTime = 0;
 134
 135 #ifdef __WIN95__
 136   static HINSTANCE gs_hRichEdit = NULL;
 137 #endif
 138
 139 //// Initialize
 140
 141 bool wxApp::Initialize()
 142 {
 143     // Some people may wish to use this, but
 144     // probably it shouldn't be here by default.
 145 #ifdef __WXDEBUG__
 146 //    wxRedirectIOToConsole();
 147 #endif
 148
 149     wxBuffer = new char[1500];
 150
 151 #ifdef wxUSE_VC_CRTDBG
 152     // do check for memory leaks on program exit
 153     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 154     //  deallocated memory which may be used to simulate low-memory condition)
 155     _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
 156 #endif // debug build under MS VC++
 157
 158     wxClassInfo::InitializeClasses();
 159
 160 #if wxUSE_RESOURCES
 161     wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 162 #endif
 163
 164     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 165     wxTheColourDatabase->Initialize();
 166
 167     wxInitializeStockLists();
 168     wxInitializeStockObjects();
 169
 170 #if wxUSE_WX_RESOURCES
 171     wxInitializeResourceSystem();
 172 #endif
 173
 174     wxBitmap::InitStandardHandlers();
 175
 176 #if defined(__WIN95__)
 177     InitCommonControls();
 178     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 179
 180     if (gs_hRichEdit == NULL)
 181     {
 182       wxMessageBox("Could not initialise Rich Edit DLL");
 183     }
 184 #endif
 185
 186     int iMsg = 96;
 187
 188    // for OLE, enlarge message queue to be as large as possible
 189    while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 190
 191 /*
 192     DWORD dwOleVer;
 193     dwOleVer = CoBuildVersion();
 194
 195     // check the OLE library version
 196     if (rmm != HIWORD(dwOleVer))
 197     {
 198         wxMessageBox("Incorrect version of OLE libraries.");
 199         return FALSE;
 200     }
 201 */
 202
 203 #ifndef __GNUWIN32__
 204     // we need to initialize OLE library
 205     if ( FAILED(::OleInitialize(NULL)) )
 206       wxFatalError(_("Cannot initialize OLE"));
 207 #endif
 208
 209 #if CTL3D
 210     if (!Ctl3dRegister(wxhInstance))
 211       wxFatalError("Cannot register CTL3D");
 212
 213     Ctl3dAutoSubclass(wxhInstance);
 214 #endif
 215
 216     g_globalCursor = new wxCursor;
 217
 218     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 219     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 220     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 221
 222     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 223     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 224     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 225
 226     RegisterWindowClasses();
 227
 228     // Create the brush for disabling bitmap buttons
 229
 230     LOGBRUSH lb ;
 231     lb.lbStyle = BS_PATTERN;
 232     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 233     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 234     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 235
 236 #if wxUSE_PENWINDOWS
 237     wxRegisterPenWin();
 238 #endif
 239
 240     wxWinHandleList = new wxList(wxKEY_INTEGER);
 241
 242     // This is to foil optimizations in Visual C++ that
 243     // throw out dummy.obj.
 244 #if (_MSC_VER >= 800) && !defined(WXMAKINGDLL)
 245     extern char wxDummyChar;
 246     if (wxDummyChar) wxDummyChar++;
 247 #endif
 248
 249     wxSetKeyboardHook(TRUE);
 250
 251     wxModule::RegisterModules();
 252     if (!wxModule::InitializeModules())
 253         return FALSE;
 254     return TRUE;
 255 }
 256
 257 //// RegisterWindowClasses
 258
 259 bool wxApp::RegisterWindowClasses()
 260 {
 261 ///////////////////////////////////////////////////////////////////////
 262 // Register the frame window class.
 263   WNDCLASS wndclass;   // Structure used to register Windows class.
 264
 265   wndclass.style         = CS_HREDRAW | CS_VREDRAW;
 266   wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 267   wndclass.cbClsExtra    = 0;
 268   wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 269   wndclass.hInstance     = wxhInstance;
 270   wndclass.hIcon         = NULL;        // wxSTD_FRAME_ICON;
 271   wndclass.hCursor       = LoadCursor( NULL, IDC_ARROW );
 272   wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 273 //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 274   wndclass.lpszMenuName  = NULL;
 275 #ifdef _MULTIPLE_INSTANCES
 276   sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 277 #endif
 278   wndclass.lpszClassName = wxFrameClassName;
 279
 280   if (!RegisterClass( &wndclass ))
 281   {
 282     // wxFatalError("Can't register Frame Window class");
 283   }
 284
 285 ///////////////////////////////////////////////////////////////////////
 286 // Register the MDI frame window class.
 287   WNDCLASS wndclass1;   // Structure used to register Windows class.
 288
 289   wndclass1.style         = CS_HREDRAW | CS_VREDRAW;
 290   wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 291   wndclass1.cbClsExtra    = 0;
 292   wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 293   wndclass1.hInstance     = wxhInstance;
 294   wndclass1.hIcon         = NULL; // wxSTD_MDIPARENTFRAME_ICON;
 295   wndclass1.hCursor       = LoadCursor( NULL, IDC_ARROW );
 296 //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 297   wndclass1.hbrBackground = NULL;
 298   wndclass1.lpszMenuName  = NULL;
 299
 300   wndclass1.lpszClassName = wxMDIFrameClassName;
 301   if (!RegisterClass( &wndclass1 ))
 302   {
 303 //    wxFatalError("Can't register MDI Frame window class");
 304 //  return FALSE;
 305   }
 306
 307 ///////////////////////////////////////////////////////////////////////
 308 // Register the MDI child frame window class.
 309   WNDCLASS wndclass4;   // Structure used to register Windows class.
 310
 311   wndclass4.style         = CS_HREDRAW | CS_VREDRAW;
 312   wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 313   wndclass4.cbClsExtra    = 0;
 314   wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 315   wndclass4.hInstance     = wxhInstance;
 316   wndclass4.hIcon         = NULL;       // wxSTD_MDICHILDFRAME_ICON;
 317   wndclass4.hCursor       = LoadCursor( NULL, IDC_ARROW );
 318   // TODO: perhaps this should be NULL so that Windows doesn't
 319   // paint the background itself (would OnEraseBackground duplicate
 320   // this?)
 321   wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 322 //  wndclass4.hbrBackground = NULL;
 323   wndclass4.lpszMenuName  = NULL;
 324   wndclass4.lpszClassName = wxMDIChildFrameClassName;
 325
 326   if (!RegisterClass( &wndclass4 ))
 327   {
 328 //   wxFatalError("Can't register MDI child frame window class");
 329 //   return FALSE;
 330   }
 331
 332 ///////////////////////////////////////////////////////////////////////
 333 // Register the panel window class.
 334   WNDCLASS wndclass2;   // Structure used to register Windows class.
 335   memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 336   // Use CS_OWNDC to avoid messing about restoring the context
 337   // for every graphic operation.
 338   wndclass2.style         = CS_HREDRAW | CS_VREDRAW;
 339   wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 340   wndclass2.cbClsExtra    = 0;
 341   wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 342   wndclass2.hInstance     = wxhInstance;
 343   wndclass2.hIcon         = NULL;
 344   wndclass2.hCursor       = NULL;
 345 //  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
 346   wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 347   wndclass2.lpszMenuName  = NULL;
 348   wndclass2.lpszClassName = wxPanelClassName;
 349   if (!RegisterClass( &wndclass2 ))
 350   {
 351 //   wxFatalError("Can't register Panel Window class");
 352 //   return FALSE;
 353   }
 354
 355 ///////////////////////////////////////////////////////////////////////
 356 // Register the canvas and textsubwindow class name
 357   WNDCLASS wndclass3;   // Structure used to register Windows class.
 358   memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
 359   // Use CS_OWNDC to avoid messing about restoring the context
 360   // for every graphic operation.
 361 //  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
 362   // wxWin 2.0
 363   wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 364   wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
 365   wndclass3.cbClsExtra    = 0;
 366   wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
 367   wndclass3.hInstance     = wxhInstance;
 368   wndclass3.hIcon         = NULL;
 369   wndclass3.hCursor       = NULL;
 370 //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 371   wndclass3.hbrBackground = NULL;
 372   wndclass3.lpszMenuName  = NULL;
 373   wndclass3.lpszClassName = wxCanvasClassName;
 374   if (!RegisterClass( &wndclass3))
 375   {
 376 //   wxFatalError("Can't register Canvas class");
 377 //   return FALSE;
 378   }
 379
 380   return TRUE;
 381 }
 382
 383 //// Convert Windows to argc, argv style
 384
 385 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 386 {
 387     wxStringList args;
 388
 389     wxString cmdLine(lpCmdLine);
 390     int count = 0;
 391
 392     // Get application name
 393     char name[260]; // 260 is MAX_PATH value from windef.h
 394     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 395
 396     // GNUWIN32 already fills in the first arg with the application name.
 397 #if !defined(__GNUWIN32__)
 398     args.Add(name);
 399     count ++;
 400 #endif
 401
 402     strcpy(name, wxFileNameFromPath(name));
 403     wxStripExtension(name);
 404     wxTheApp->SetAppName(name);
 405
 406     // Break up string
 407     // Treat strings enclosed in double-quotes as single arguments
 408     int i = 0;
 409     int len = cmdLine.Length();
 410     while (i < len)
 411     {
 412         // Skip whitespace
 413         while ((i < len) && isspace(cmdLine.GetChar(i)))
 414             i ++;
 415
 416         if (i < len)
 417         {
 418             if (cmdLine.GetChar(i) == '"') // We found the start of a string
 419             {
 420                 i ++;
 421                 int first = i;
 422                 while ((i < len) && (cmdLine.GetChar(i) != '"'))
 423                     i ++;
 424
 425                 wxString arg(cmdLine.Mid(first, (i - first)));
 426
 427                 args.Add(arg);
 428                 count ++;
 429
 430                 if (i < len)
 431                     i ++; // Skip past 2nd quote
 432             }
 433             else // Unquoted argument
 434             {
 435                 int first = i;
 436                 while ((i < len) && !isspace(cmdLine.GetChar(i)))
 437                     i ++;
 438
 439                 wxString arg(cmdLine.Mid(first, (i - first)));
 440
 441                 args.Add(arg);
 442                 count ++;
 443             }
 444         }
 445     }
 446
 447     wxTheApp->argv = new char*[count + 1];
 448     for (i = 0; i < count; i++)
 449     {
 450         wxString arg(args[i]);
 451         wxTheApp->argv[i] = copystring((const char*)arg);
 452     }
 453     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 454     wxTheApp->argc = count;
 455 }
 456
 457 //// Cleans up any wxWindows internal structures left lying around
 458
 459 void wxApp::CleanUp()
 460 {
 461   //// COMMON CLEANUP
 462   wxModule::CleanUpModules();
 463
 464 #if wxUSE_WX_RESOURCES
 465   wxCleanUpResourceSystem();
 466
 467 //  wxDefaultResourceTable->ClearTable();
 468 #endif
 469
 470   // Indicate that the cursor can be freed,
 471   // so that cursor won't be deleted by deleting
 472   // the bitmap list before g_globalCursor goes out
 473   // of scope (double deletion of the cursor).
 474   wxSetCursor(wxNullCursor);
 475   delete g_globalCursor;
 476
 477   wxDeleteStockObjects() ;
 478
 479   // Destroy all GDI lists, etc.
 480   wxDeleteStockLists();
 481
 482   delete wxTheColourDatabase;
 483   wxTheColourDatabase = NULL;
 484
 485   wxBitmap::CleanUpHandlers();
 486
 487   delete[] wxBuffer;
 488   wxBuffer = NULL;
 489
 490   //// WINDOWS-SPECIFIC CLEANUP
 491
 492   wxSetKeyboardHook(FALSE);
 493
 494 #ifdef __WIN95__
 495   if (gs_hRichEdit != NULL)
 496     FreeLibrary(gs_hRichEdit);
 497 #endif
 498
 499 #if wxUSE_PENWINDOWS
 500   wxCleanUpPenWin();
 501 #endif
 502
 503   if (wxSTD_FRAME_ICON)
 504     DestroyIcon(wxSTD_FRAME_ICON);
 505   if (wxSTD_MDICHILDFRAME_ICON)
 506     DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 507   if (wxSTD_MDIPARENTFRAME_ICON)
 508     DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 509
 510   if (wxDEFAULT_FRAME_ICON)
 511     DestroyIcon(wxDEFAULT_FRAME_ICON);
 512   if (wxDEFAULT_MDICHILDFRAME_ICON)
 513     DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 514   if (wxDEFAULT_MDIPARENTFRAME_ICON)
 515     DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 516
 517   if ( wxDisableButtonBrush )
 518     ::DeleteObject( wxDisableButtonBrush ) ;
 519
 520 #ifndef __GNUWIN32__
 521   ::OleUninitialize();
 522 #endif
 523
 524 #if CTL3D
 525   Ctl3dUnregister(wxhInstance);
 526 #endif
 527
 528   if (wxWinHandleList)
 529     delete wxWinHandleList ;
 530
 531   wxClassInfo::CleanUpClasses();
 532
 533   delete wxTheApp;
 534   wxTheApp = NULL;
 535
 536 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 537   // At this point we want to check if there are any memory
 538   // blocks that aren't part of the wxDebugContext itself,
 539   // as a special case. Then when dumping we need to ignore
 540   // wxDebugContext, too.
 541   if (wxDebugContext::CountObjectsLeft() > 0)
 542   {
 543       wxLogDebug("There were memory leaks.");
 544       wxDebugContext::Dump();
 545       wxDebugContext::PrintStatistics();
 546   }
 547 //  wxDebugContext::SetStream(NULL, NULL);
 548 #endif
 549
 550   // do it as the very last thing because everything else can log messages
 551   wxLog::DontCreateOnDemand();
 552   delete wxLog::SetActiveTarget(NULL);
 553 }
 554
 555 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 556
 557 //// Main wxWindows entry point
 558 int wxEntry(WXHINSTANCE hInstance,
 559             WXHINSTANCE WXUNUSED(hPrevInstance),
 560             char *lpCmdLine,
 561             int nCmdShow,
 562             bool enterLoop)
 563 {
 564 #if !defined(__WXDEBUG__) && !defined(__BORLANDC__) // take everything into a try-except block in release build
 565   try {
 566 #endif
 567
 568   wxhInstance = (HINSTANCE) hInstance;
 569
 570   if (!wxApp::Initialize())
 571     return 0;
 572
 573   // create the application object or ensure that one already exists
 574   if (!wxTheApp)
 575   {
 576     // The app may have declared a global application object, but we recommend
 577     // the IMPLEMENT_APP macro is used instead, which sets an initializer
 578     // function for delayed, dynamic app object construction.
 579     wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 580                  "No initializer - use IMPLEMENT_APP macro." );
 581
 582     wxTheApp = (*wxApp::GetInitializerFunction()) ();
 583   }
 584
 585   wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 586
 587   // save the WinMain() parameters
 588   wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 589   wxTheApp->m_nCmdShow = nCmdShow;
 590
 591   // GUI-specific initialisation. In fact on Windows we don't have any,
 592   // but this call is provided for compatibility across platforms.
 593   wxTheApp->OnInitGui() ;
 594
 595   int retValue = 0;
 596
 597   if ( wxTheApp->OnInit() )
 598   {
 599       if ( enterLoop )
 600       {
 601           retValue = wxTheApp->OnRun();
 602       }
 603   }
 604   //else: app initialization failed, so we skipped OnRun()
 605
 606   wxWindow *topWindow = wxTheApp->GetTopWindow();
 607   if ( topWindow )
 608   {
 609       // Forcibly delete the window.
 610       if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 611            topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 612       {
 613           topWindow->Close(TRUE);
 614           wxTheApp->DeletePendingObjects();
 615       }
 616       else
 617       {
 618           delete topWindow;
 619           wxTheApp->SetTopWindow(NULL);
 620       }
 621   }
 622
 623   wxTheApp->OnExit();
 624
 625   // flush the logged messages if any
 626   wxLog *pLog = wxLog::GetActiveTarget();
 627   if ( pLog != NULL && pLog->HasPendingMessages() )
 628     pLog->Flush();
 629
 630
 631   wxApp::CleanUp();
 632
 633   return retValue;
 634 #if !defined(__WXDEBUG__) && !defined(__BORLANDC__) // catch exceptions only in release build
 635   }
 636   except ( EXCEPTION_EXECUTE_HANDLER ) {
 637     /*
 638     if ( wxTheApp )
 639       wxTheApp->OnFatalException();
 640     */
 641
 642     ::ExitProcess(3); // the same exit code as abort()
 643   }
 644 #endif //debug
 645 }
 646
 647 #else /*  _WINDLL  */
 648
 649 //// Entry point for DLLs
 650
 651 int wxEntry(WXHINSTANCE hInstance)
 652 {
 653   wxhInstance = (HINSTANCE) hInstance;
 654   wxApp::Initialize();
 655
 656   // The app may have declared a global application object, but we recommend
 657   // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 658   // for delayed, dynamic app object construction.
 659
 660   if (!wxTheApp)
 661   {
 662     if (!wxApp::GetInitializerFunction())
 663     {
 664       MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 665     return 0;
 666     }
 667
 668     wxTheApp = (* wxApp::GetInitializerFunction()) ();
 669   }
 670
 671   if (!wxTheApp) {
 672     MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 673     return 0;
 674   }
 675
 676   wxTheApp->argc = 0;
 677   wxTheApp->argv = NULL;
 678
 679   wxTheApp->OnInitGui();
 680
 681   wxTheApp->OnInit();
 682
 683   if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
 684     wxTheApp->GetTopWindow()->Show(TRUE);
 685   }
 686
 687   return 1;
 688 }
 689 #endif // _WINDLL
 690
 691 //// Static member initialization
 692
 693 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 694
 695 wxApp::wxApp()
 696 {
 697   m_topWindow = NULL;
 698   wxTheApp = this;
 699   m_className = "";
 700   m_wantDebugOutput = TRUE ;
 701   m_appName = "";
 702   argc = 0;
 703   argv = NULL;
 704 #ifdef __WXMSW__
 705   m_printMode = wxPRINT_WINDOWS;
 706 #else
 707   m_printMode = wxPRINT_POSTSCRIPT;
 708 #endif
 709   m_exitOnFrameDelete = TRUE;
 710   m_auto3D = TRUE;
 711 }
 712
 713 wxApp::~wxApp()
 714 {
 715   // Delete command-line args
 716   int i;
 717   for (i = 0; i < argc; i++)
 718   {
 719     delete[] argv[i];
 720   }
 721   delete[] argv;
 722 }
 723
 724 bool wxApp::Initialized()
 725 {
 726 #ifndef _WINDLL
 727   if (GetTopWindow())
 728     return TRUE;
 729   else
 730     return FALSE;
 731 #endif
 732 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 733   return TRUE;
 734 #endif
 735 }
 736
 737 /*
 738  * Get and process a message, returning FALSE if WM_QUIT
 739  * received.
 740  *
 741  */
 742 bool wxApp::DoMessage()
 743 {
 744   if (!::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0))
 745   {
 746     return FALSE;
 747   }
 748
 749   // Process the message
 750   if (!ProcessMessage((WXMSG *)&s_currentMsg))
 751   {
 752     ::TranslateMessage(&s_currentMsg);
 753     wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
 754     ::DispatchMessage(&s_currentMsg);
 755   }
 756   return TRUE;
 757 }
 758
 759 /*
 760  * Keep trying to process messages until WM_QUIT
 761  * received.
 762  *
 763  * If there are messages to be processed, they will all be
 764  * processed and OnIdle will not be called.
 765  * When there are no more messages, OnIdle is called.
 766  * If OnIdle requests more time,
 767  * it will be repeatedly called so long as there are no pending messages.
 768  * A 'feature' of this is that once OnIdle has decided that no more processing
 769  * is required, then it won't get processing time until further messages
 770  * are processed (it'll sit in DoMessage).
 771  */
 772
 773 int wxApp::MainLoop()
 774 {
 775   m_keepGoing = TRUE;
 776   while (m_keepGoing)
 777   {
 778     while (!::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 779            ProcessIdle()) {}
 780     if (!DoMessage())
 781       m_keepGoing = FALSE;
 782   }
 783
 784   return s_currentMsg.wParam;
 785 }
 786
 787 // Returns TRUE if more time is needed.
 788 bool wxApp::ProcessIdle()
 789 {
 790     wxIdleEvent event;
 791     event.SetEventObject(this);
 792     ProcessEvent(event);
 793
 794     return event.MoreRequested();
 795 }
 796
 797 void wxApp::ExitMainLoop()
 798 {
 799   m_keepGoing = FALSE;
 800 }
 801
 802 bool wxApp::Pending()
 803 {
 804   return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 805 }
 806
 807 void wxApp::Dispatch()
 808 {
 809     if (!DoMessage())
 810       m_keepGoing = FALSE;
 811 }
 812
 813 /*
 814  * Give all windows a chance to preprocess
 815  * the message. Some may have accelerator tables, or have
 816  * MDI complications.
 817  */
 818 bool wxApp::ProcessMessage(WXMSG *Msg)
 819 {
 820   MSG *msg = (MSG *)Msg;
 821
 822   HWND hWnd;
 823
 824   // Try translations first; find the youngest window with
 825   // a translation table.
 826   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 827   {
 828     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 829     if (wnd)
 830     {
 831        if (wnd->MSWTranslateMessage(Msg))
 832          return TRUE;
 833     }
 834   }
 835
 836   // Anyone for a non-translation message? Try youngest descendants first.
 837   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 838   {
 839     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 840     if (wnd)
 841     {
 842        if (wnd->MSWProcessMessage(Msg))
 843          return TRUE;
 844     }
 845   }
 846   return FALSE;
 847 }
 848
 849 void wxApp::OnIdle(wxIdleEvent& event)
 850 {
 851     static bool s_inOnIdle = FALSE;
 852
 853     // Avoid recursion (via ProcessEvent default case)
 854     if ( s_inOnIdle )
 855         return;
 856
 857     s_inOnIdle = TRUE;
 858
 859     // 'Garbage' collection of windows deleted with Close().
 860     DeletePendingObjects();
 861
 862     // flush the logged messages if any
 863     wxLog *pLog = wxLog::GetActiveTarget();
 864     if ( pLog != NULL && pLog->HasPendingMessages() )
 865         pLog->Flush();
 866
 867     // Send OnIdle events to all windows
 868     if ( SendIdleEvents() )
 869     {
 870         // SendIdleEvents() returns TRUE if at least one window requested more
 871         // idle events
 872         event.RequestMore(TRUE);
 873     }
 874 #if wxUSE_THREADS
 875     // give a chance to all other threads to perform GUI calls
 876     wxMutexGuiLeave();
 877     ::Sleep(0);
 878     wxMutexGuiEnter();
 879 #endif
 880
 881     s_inOnIdle = FALSE;
 882 }
 883
 884 // Send idle event to all top-level windows
 885 bool wxApp::SendIdleEvents()
 886 {
 887     bool needMore = FALSE;
 888     wxNode* node = wxTopLevelWindows.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
 898     return needMore;
 899 }
 900
 901 // Send idle event to window and all subwindows
 902 bool wxApp::SendIdleEvents(wxWindow* win)
 903 {
 904   bool needMore = FALSE;
 905
 906   wxIdleEvent event;
 907   event.SetEventObject(win);
 908   win->GetEventHandler()->ProcessEvent(event);
 909
 910   if (event.MoreRequested())
 911     needMore = TRUE;
 912
 913   wxNode* node = win->GetChildren().First();
 914   while (node)
 915   {
 916     wxWindow* win = (wxWindow*) node->Data();
 917     if (SendIdleEvents(win))
 918       needMore = TRUE;
 919
 920     node = node->Next();
 921   }
 922   return needMore ;
 923 }
 924
 925 void wxApp::DeletePendingObjects()
 926 {
 927   wxNode *node = wxPendingDelete.First();
 928   while (node)
 929   {
 930     wxObject *obj = (wxObject *)node->Data();
 931
 932     delete obj;
 933
 934     if (wxPendingDelete.Member(obj))
 935       delete node;
 936
 937     // Deleting one object may have deleted other pending
 938     // objects, so start from beginning of list again.
 939     node = wxPendingDelete.First();
 940   }
 941 }
 942
 943 void wxApp::OnEndSession(wxCloseEvent& event)
 944 {
 945     if (GetTopWindow())
 946         GetTopWindow()->Close(TRUE);
 947 }
 948
 949 // Default behaviour: close the application with prompts. The
 950 // user can veto the close, and therefore the end session.
 951 void wxApp::OnQueryEndSession(wxCloseEvent& event)
 952 {
 953     if (GetTopWindow())
 954     {
 955         if (!GetTopWindow()->Close(!event.CanVeto()))
 956             event.Veto(TRUE);
 957     }
 958 }
 959
 960 wxLog* wxApp::CreateLogTarget()
 961 {
 962     return new wxLogGui;
 963 }
 964
 965 wxWindow* wxApp::GetTopWindow() const
 966 {
 967     if (m_topWindow)
 968         return m_topWindow;
 969     else if (wxTopLevelWindows.Number() > 0)
 970         return (wxWindow*) wxTopLevelWindows.First()->Data();
 971     else
 972         return NULL;
 973 }
 974
 975 int wxApp::GetComCtl32Version() const
 976 {
 977     // have we loaded COMCTL32 yet?
 978     HMODULE theModule = ::GetModuleHandle("COMCTL32");
 979     int version = 0;
 980
 981     // if so, then we can check for the version
 982     if (theModule)
 983     {
 984         // InitCommonControlsEx is unique to 4.7 and later
 985         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
 986
 987         if (! theProc)
 988         {                    // not found, must be 4.00
 989       version = 400;
 990         }
 991         else
 992         {
 993       // The following symbol are unique to 4.71
 994       //   DllInstall
 995       //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
 996       //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
 997       //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
 998       //   FlatSB_ShowScrollBar
 999       //   _DrawIndirectImageList _DuplicateImageList
1000       //   InitializeFlatSB
1001       //   UninitializeFlatSB
1002       // we could check for any of these - I chose DllInstall
1003       FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1004       if (! theProc)
1005       {
1006         // not found, must be 4.70
1007         version = 470;
1008       }
1009       else
1010       {                         // found, must be 4.71
1011         version = 471;
1012       }
1013         }
1014     }
1015     return version;
1016 }
1017
1018 void wxExit()
1019 {
1020   wxApp::CleanUp();
1021   FatalAppExit(0, "Fatal error: exiting");
1022 }
1023
1024 // Yield to incoming messages
1025 bool wxYield()
1026 {
1027   MSG msg;
1028   // We want to go back to the main message loop
1029   // if we see a WM_QUIT. (?)
1030   while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1031   {
1032     if (!wxTheApp->DoMessage())
1033       break;
1034   }
1035
1036   return TRUE;
1037 }
1038
1039 HINSTANCE wxGetInstance()
1040 {
1041   return wxhInstance;
1042 }
1043
1044 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1045 // if in a separate file. So include it here to ensure it's linked.
1046 #if (defined(_MSC_VER) && !defined(__WIN32__)) || defined(__GNUWIN32__)
1047   #include "main.cpp"
1048 #endif