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   #include "wx/intl.h"
  37 #endif
  38
  39 #include "wx/msw/private.h"
  40 #include "wx/log.h"
  41 #include "wx/module.h"
  42
  43 #if wxUSE_THREADS
  44     #include "wx/thread.h"
  45
  46     // define the array of MSG strutures
  47     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  48
  49     #include "wx/arrimpl.cpp"
  50
  51     WX_DEFINE_OBJARRAY(wxMsgArray);
  52 #endif // wxUSE_THREADS
  53
  54 #if wxUSE_WX_RESOURCES
  55   #include "wx/resource.h"
  56 #endif
  57
  58 // To UG: there's no point in putting this #if here
  59 // if you don't do the same for the Ole calls further down.
  60 // Also, OLE is used not just for drag and drop (it's used by automatn.cpp).
  61 // #if wxUSE_DRAG_AND_DROP
  62 #if !defined(__GNUWIN32__) && !defined(__SC__)
  63 #include <ole2.h>
  64 #endif
  65 // #endif
  66
  67 #include <string.h>
  68 #include <ctype.h>
  69
  70 #if defined(__WIN95__) && !defined(__GNUWIN32__)
  71   #include <commctrl.h>
  72 #endif
  73
  74 // use debug CRT functions for memory leak detections in VC++ if we're not
  75 // using wxWindows own methods
  76 #if defined(__WXDEBUG__) && defined(_MSC_VER) && !wxUSE_GLOBAL_MEMORY_OPERATORS && !defined(__NO_VC_CRTDBG__)
  77     #define wxUSE_VC_CRTDBG
  78 #else
  79     #undef wxUSE_VC_CRTDBG
  80 #endif
  81
  82 #ifdef wxUSE_VC_CRTDBG
  83   // VC++ uses this macro as debug/release mode indicator
  84   #ifndef _DEBUG
  85     #define _DEBUG
  86   #endif
  87
  88   /* Need to undef new if including crtdbg.h */
  89   #ifdef new
  90   #undef new
  91   #endif
  92
  93   #include <crtdbg.h>
  94
  95   #if defined(__WXDEBUG__) && wxUSE_GLOBAL_MEMORY_OPERATORS && wxUSE_DEBUG_NEW_ALWAYS
  96   #define new new(__FILE__,__LINE__)
  97   #endif
  98
  99 #endif
 100
 101 extern char *wxBuffer;
 102 extern char *wxOsVersion;
 103 extern wxList *wxWinHandleList;
 104 extern wxList WXDLLEXPORT wxPendingDelete;
 105 extern void wxSetKeyboardHook(bool doIt);
 106 extern wxCursor *g_globalCursor;
 107
 108 HINSTANCE wxhInstance = 0;
 109 static MSG s_currentMsg;
 110 wxApp *wxTheApp = NULL;
 111
 112 // @@ why not const? and not static?
 113 char wxFrameClassName[]         = "wxFrameClass";
 114 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
 115 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
 116 char wxPanelClassName[]         = "wxPanelClass";
 117 char wxCanvasClassName[]        = "wxCanvasClass";
 118
 119 HICON wxSTD_FRAME_ICON = NULL;
 120 HICON wxSTD_MDICHILDFRAME_ICON = NULL;
 121 HICON wxSTD_MDIPARENTFRAME_ICON = NULL;
 122
 123 HICON wxDEFAULT_FRAME_ICON = NULL;
 124 HICON wxDEFAULT_MDICHILDFRAME_ICON = NULL;
 125 HICON wxDEFAULT_MDIPARENTFRAME_ICON = NULL;
 126
 127 HBRUSH wxDisableButtonBrush = 0;
 128
 129 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 130
 131 #if !USE_SHARED_LIBRARY
 132   IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 133
 134   BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 135       EVT_IDLE(wxApp::OnIdle)
 136       EVT_END_SESSION(wxApp::OnEndSession)
 137       EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 138   END_EVENT_TABLE()
 139 #endif
 140
 141 long wxApp::sm_lastMessageTime = 0;
 142
 143 #ifdef __WIN95__
 144   static HINSTANCE gs_hRichEdit = NULL;
 145 #endif
 146
 147 //// Initialize
 148
 149 bool wxApp::Initialize()
 150 {
 151     // Some people may wish to use this, but
 152     // probably it shouldn't be here by default.
 153 #ifdef __WXDEBUG__
 154 //    wxRedirectIOToConsole();
 155 #endif
 156
 157     wxBuffer = new char[1500];
 158
 159 #ifdef wxUSE_VC_CRTDBG
 160     // do check for memory leaks on program exit
 161     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 162     //  deallocated memory which may be used to simulate low-memory condition)
 163     _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF);
 164 #endif // debug build under MS VC++
 165
 166     wxClassInfo::InitializeClasses();
 167
 168 #if wxUSE_RESOURCES
 169     wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 170 #endif
 171
 172     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 173     wxTheColourDatabase->Initialize();
 174
 175     wxInitializeStockLists();
 176     wxInitializeStockObjects();
 177
 178 #if wxUSE_WX_RESOURCES
 179     wxInitializeResourceSystem();
 180 #endif
 181
 182     wxBitmap::InitStandardHandlers();
 183
 184 #if defined(__WIN95__)
 185     InitCommonControls();
 186     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 187
 188     if (gs_hRichEdit == NULL)
 189     {
 190       wxMessageBox("Could not initialise Rich Edit DLL");
 191     }
 192 #endif
 193
 194     int iMsg = 96;
 195
 196    // for OLE, enlarge message queue to be as large as possible
 197    while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 198
 199 /*
 200     DWORD dwOleVer;
 201     dwOleVer = CoBuildVersion();
 202
 203     // check the OLE library version
 204     if (rmm != HIWORD(dwOleVer))
 205     {
 206         wxMessageBox("Incorrect version of OLE libraries.");
 207         return FALSE;
 208     }
 209 */
 210
 211 #if !defined(__GNUWIN32__) && !defined(__SC__)
 212     // we need to initialize OLE library
 213     if ( FAILED(::OleInitialize(NULL)) )
 214       wxFatalError(_("Cannot initialize OLE"));
 215 #endif
 216
 217 #if CTL3D
 218     if (!Ctl3dRegister(wxhInstance))
 219       wxFatalError("Cannot register CTL3D");
 220
 221     Ctl3dAutoSubclass(wxhInstance);
 222 #endif
 223
 224     g_globalCursor = new wxCursor;
 225
 226     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 227     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 228     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 229
 230     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 231     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 232     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 233
 234     RegisterWindowClasses();
 235
 236     // Create the brush for disabling bitmap buttons
 237
 238     LOGBRUSH lb ;
 239     lb.lbStyle = BS_PATTERN;
 240     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 241     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 242     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 243
 244 #if wxUSE_PENWINDOWS
 245     wxRegisterPenWin();
 246 #endif
 247
 248     wxWinHandleList = new wxList(wxKEY_INTEGER);
 249
 250     // This is to foil optimizations in Visual C++ that
 251     // throw out dummy.obj.
 252 // #if (_MSC_VER >= 800) && !defined(WXMAKINGDLL)
 253 #if defined(_MSC_VER) && defined(__WIN16__) && !defined(WXMAKINGDLL)
 254     extern char wxDummyChar;
 255     if (wxDummyChar) wxDummyChar++;
 256 #endif
 257
 258     wxSetKeyboardHook(TRUE);
 259
 260     wxModule::RegisterModules();
 261     if (!wxModule::InitializeModules())
 262         return FALSE;
 263     return TRUE;
 264 }
 265
 266 //// RegisterWindowClasses
 267
 268 bool wxApp::RegisterWindowClasses()
 269 {
 270 ///////////////////////////////////////////////////////////////////////
 271 // Register the frame window class.
 272   WNDCLASS wndclass;   // Structure used to register Windows class.
 273
 274   wndclass.style         = CS_HREDRAW | CS_VREDRAW;
 275   wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 276   wndclass.cbClsExtra    = 0;
 277   wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 278   wndclass.hInstance     = wxhInstance;
 279   wndclass.hIcon         = NULL;        // wxSTD_FRAME_ICON;
 280   wndclass.hCursor       = LoadCursor( NULL, IDC_ARROW );
 281   wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 282 //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 283   wndclass.lpszMenuName  = NULL;
 284 #ifdef _MULTIPLE_INSTANCES
 285   sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 286 #endif
 287   wndclass.lpszClassName = wxFrameClassName;
 288
 289   if (!RegisterClass( &wndclass ))
 290   {
 291     // wxFatalError("Can't register Frame Window class");
 292   }
 293
 294 ///////////////////////////////////////////////////////////////////////
 295 // Register the MDI frame window class.
 296   WNDCLASS wndclass1;   // Structure used to register Windows class.
 297
 298   wndclass1.style         = CS_HREDRAW | CS_VREDRAW;
 299   wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 300   wndclass1.cbClsExtra    = 0;
 301   wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 302   wndclass1.hInstance     = wxhInstance;
 303   wndclass1.hIcon         = NULL; // wxSTD_MDIPARENTFRAME_ICON;
 304   wndclass1.hCursor       = LoadCursor( NULL, IDC_ARROW );
 305 //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 306   wndclass1.hbrBackground = NULL;
 307   wndclass1.lpszMenuName  = NULL;
 308
 309   wndclass1.lpszClassName = wxMDIFrameClassName;
 310   if (!RegisterClass( &wndclass1 ))
 311   {
 312 //    wxFatalError("Can't register MDI Frame window class");
 313 //  return FALSE;
 314   }
 315
 316 ///////////////////////////////////////////////////////////////////////
 317 // Register the MDI child frame window class.
 318   WNDCLASS wndclass4;   // Structure used to register Windows class.
 319
 320   wndclass4.style         = CS_HREDRAW | CS_VREDRAW;
 321   wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 322   wndclass4.cbClsExtra    = 0;
 323   wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 324   wndclass4.hInstance     = wxhInstance;
 325   wndclass4.hIcon         = NULL;       // wxSTD_MDICHILDFRAME_ICON;
 326   wndclass4.hCursor       = LoadCursor( NULL, IDC_ARROW );
 327   // TODO: perhaps this should be NULL so that Windows doesn't
 328   // paint the background itself (would OnEraseBackground duplicate
 329   // this?)
 330   wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 331 //  wndclass4.hbrBackground = NULL;
 332   wndclass4.lpszMenuName  = NULL;
 333   wndclass4.lpszClassName = wxMDIChildFrameClassName;
 334
 335   if (!RegisterClass( &wndclass4 ))
 336   {
 337 //   wxFatalError("Can't register MDI child frame window class");
 338 //   return FALSE;
 339   }
 340
 341 ///////////////////////////////////////////////////////////////////////
 342 // Register the panel window class.
 343   WNDCLASS wndclass2;   // Structure used to register Windows class.
 344   memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 345   // Use CS_OWNDC to avoid messing about restoring the context
 346   // for every graphic operation.
 347   wndclass2.style         = CS_HREDRAW | CS_VREDRAW;
 348   wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 349   wndclass2.cbClsExtra    = 0;
 350   wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 351   wndclass2.hInstance     = wxhInstance;
 352   wndclass2.hIcon         = NULL;
 353   wndclass2.hCursor       = NULL;
 354 //  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
 355   wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 356   wndclass2.lpszMenuName  = NULL;
 357   wndclass2.lpszClassName = wxPanelClassName;
 358   if (!RegisterClass( &wndclass2 ))
 359   {
 360 //   wxFatalError("Can't register Panel Window class");
 361 //   return FALSE;
 362   }
 363
 364 ///////////////////////////////////////////////////////////////////////
 365 // Register the canvas and textsubwindow class name
 366   WNDCLASS wndclass3;   // Structure used to register Windows class.
 367   memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
 368   // Use CS_OWNDC to avoid messing about restoring the context
 369   // for every graphic operation.
 370 //  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
 371   // wxWin 2.0
 372   wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 373   wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
 374   wndclass3.cbClsExtra    = 0;
 375   wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
 376   wndclass3.hInstance     = wxhInstance;
 377   wndclass3.hIcon         = NULL;
 378   wndclass3.hCursor       = NULL;
 379 //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 380   wndclass3.hbrBackground = NULL;
 381   wndclass3.lpszMenuName  = NULL;
 382   wndclass3.lpszClassName = wxCanvasClassName;
 383   if (!RegisterClass( &wndclass3))
 384   {
 385 //   wxFatalError("Can't register Canvas class");
 386 //   return FALSE;
 387   }
 388
 389   return TRUE;
 390 }
 391
 392 //// Convert Windows to argc, argv style
 393
 394 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 395 {
 396     wxStringList args;
 397
 398     wxString cmdLine(lpCmdLine);
 399     int count = 0;
 400
 401     // Get application name
 402     char name[260]; // 260 is MAX_PATH value from windef.h
 403     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 404
 405     // GNUWIN32 already fills in the first arg with the application name.
 406 #if !defined(__GNUWIN32__)
 407     args.Add(name);
 408     count ++;
 409 #endif
 410
 411     strcpy(name, wxFileNameFromPath(name));
 412     wxStripExtension(name);
 413     wxTheApp->SetAppName(name);
 414
 415     // Break up string
 416     // Treat strings enclosed in double-quotes as single arguments
 417     int i = 0;
 418     int len = cmdLine.Length();
 419     while (i < len)
 420     {
 421         // Skip whitespace
 422         while ((i < len) && isspace(cmdLine.GetChar(i)))
 423             i ++;
 424
 425         if (i < len)
 426         {
 427             if (cmdLine.GetChar(i) == '"') // We found the start of a string
 428             {
 429                 i ++;
 430                 int first = i;
 431                 while ((i < len) && (cmdLine.GetChar(i) != '"'))
 432                     i ++;
 433
 434                 wxString arg(cmdLine.Mid(first, (i - first)));
 435
 436                 args.Add(arg);
 437                 count ++;
 438
 439                 if (i < len)
 440                     i ++; // Skip past 2nd quote
 441             }
 442             else // Unquoted argument
 443             {
 444                 int first = i;
 445                 while ((i < len) && !isspace(cmdLine.GetChar(i)))
 446                     i ++;
 447
 448                 wxString arg(cmdLine.Mid(first, (i - first)));
 449
 450                 args.Add(arg);
 451                 count ++;
 452             }
 453         }
 454     }
 455
 456     wxTheApp->argv = new char*[count + 1];
 457     for (i = 0; i < count; i++)
 458     {
 459         wxString arg(args[i]);
 460         wxTheApp->argv[i] = copystring((const char*)arg);
 461     }
 462     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 463     wxTheApp->argc = count;
 464 }
 465
 466 //// Cleans up any wxWindows internal structures left lying around
 467
 468 void wxApp::CleanUp()
 469 {
 470   //// COMMON CLEANUP
 471   wxModule::CleanUpModules();
 472
 473 #if wxUSE_WX_RESOURCES
 474   wxCleanUpResourceSystem();
 475
 476 //  wxDefaultResourceTable->ClearTable();
 477 #endif
 478
 479   // Indicate that the cursor can be freed,
 480   // so that cursor won't be deleted by deleting
 481   // the bitmap list before g_globalCursor goes out
 482   // of scope (double deletion of the cursor).
 483   wxSetCursor(wxNullCursor);
 484   delete g_globalCursor;
 485
 486   wxDeleteStockObjects() ;
 487
 488   // Destroy all GDI lists, etc.
 489   wxDeleteStockLists();
 490
 491   delete wxTheColourDatabase;
 492   wxTheColourDatabase = NULL;
 493
 494   wxBitmap::CleanUpHandlers();
 495
 496   delete[] wxBuffer;
 497   wxBuffer = NULL;
 498
 499   //// WINDOWS-SPECIFIC CLEANUP
 500
 501   wxSetKeyboardHook(FALSE);
 502
 503 #ifdef __WIN95__
 504   if (gs_hRichEdit != NULL)
 505     FreeLibrary(gs_hRichEdit);
 506 #endif
 507
 508 #if wxUSE_PENWINDOWS
 509   wxCleanUpPenWin();
 510 #endif
 511
 512   if (wxSTD_FRAME_ICON)
 513     DestroyIcon(wxSTD_FRAME_ICON);
 514   if (wxSTD_MDICHILDFRAME_ICON)
 515     DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 516   if (wxSTD_MDIPARENTFRAME_ICON)
 517     DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 518
 519   if (wxDEFAULT_FRAME_ICON)
 520     DestroyIcon(wxDEFAULT_FRAME_ICON);
 521   if (wxDEFAULT_MDICHILDFRAME_ICON)
 522     DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 523   if (wxDEFAULT_MDIPARENTFRAME_ICON)
 524     DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 525
 526   if ( wxDisableButtonBrush )
 527     ::DeleteObject( wxDisableButtonBrush ) ;
 528
 529 #if !defined(__GNUWIN32__) && !defined(__SC__)
 530   ::OleUninitialize();
 531 #endif
 532
 533 #if CTL3D
 534   Ctl3dUnregister(wxhInstance);
 535 #endif
 536
 537   if (wxWinHandleList)
 538     delete wxWinHandleList ;
 539
 540   wxClassInfo::CleanUpClasses();
 541
 542   delete wxTheApp;
 543   wxTheApp = NULL;
 544
 545 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 546   // At this point we want to check if there are any memory
 547   // blocks that aren't part of the wxDebugContext itself,
 548   // as a special case. Then when dumping we need to ignore
 549   // wxDebugContext, too.
 550   if (wxDebugContext::CountObjectsLeft() > 0)
 551   {
 552       wxLogDebug("There were memory leaks.");
 553       wxDebugContext::Dump();
 554       wxDebugContext::PrintStatistics();
 555   }
 556 //  wxDebugContext::SetStream(NULL, NULL);
 557 #endif
 558
 559   // do it as the very last thing because everything else can log messages
 560   wxLog::DontCreateOnDemand();
 561   delete wxLog::SetActiveTarget(NULL);
 562 }
 563
 564 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 565
 566 //// Main wxWindows entry point
 567 int wxEntry(WXHINSTANCE hInstance,
 568             WXHINSTANCE WXUNUSED(hPrevInstance),
 569             char *lpCmdLine,
 570             int nCmdShow,
 571             bool enterLoop)
 572 {
 573 #if !defined(__WXDEBUG__) && !defined(__BORLANDC__) && !defined(__WATCOMC__) // take everything into a try-except block in release build
 574   try {
 575 #endif
 576
 577   wxhInstance = (HINSTANCE) hInstance;
 578
 579   if (!wxApp::Initialize())
 580     return 0;
 581
 582   // create the application object or ensure that one already exists
 583   if (!wxTheApp)
 584   {
 585     // The app may have declared a global application object, but we recommend
 586     // the IMPLEMENT_APP macro is used instead, which sets an initializer
 587     // function for delayed, dynamic app object construction.
 588     wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 589                  "No initializer - use IMPLEMENT_APP macro." );
 590
 591     wxTheApp = (*wxApp::GetInitializerFunction()) ();
 592   }
 593
 594   wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 595
 596   // save the WinMain() parameters
 597   wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 598   wxTheApp->m_nCmdShow = nCmdShow;
 599
 600   // GUI-specific initialisation. In fact on Windows we don't have any,
 601   // but this call is provided for compatibility across platforms.
 602   wxTheApp->OnInitGui() ;
 603
 604   int retValue = 0;
 605
 606   if ( wxTheApp->OnInit() )
 607   {
 608       if ( enterLoop )
 609       {
 610           retValue = wxTheApp->OnRun();
 611       }
 612   }
 613   //else: app initialization failed, so we skipped OnRun()
 614
 615   wxWindow *topWindow = wxTheApp->GetTopWindow();
 616   if ( topWindow )
 617   {
 618       // Forcibly delete the window.
 619       if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 620            topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 621       {
 622           topWindow->Close(TRUE);
 623           wxTheApp->DeletePendingObjects();
 624       }
 625       else
 626       {
 627           delete topWindow;
 628           wxTheApp->SetTopWindow(NULL);
 629       }
 630   }
 631
 632   wxTheApp->OnExit();
 633
 634   // flush the logged messages if any
 635   wxLog *pLog = wxLog::GetActiveTarget();
 636   if ( pLog != NULL && pLog->HasPendingMessages() )
 637     pLog->Flush();
 638
 639
 640   wxApp::CleanUp();
 641
 642   return retValue;
 643 #if !defined(__WXDEBUG__) && !defined(__BORLANDC__) && !defined(__WATCOMC__) // catch exceptions only in release build
 644   }
 645   except ( EXCEPTION_EXECUTE_HANDLER ) {
 646     /*
 647     if ( wxTheApp )
 648       wxTheApp->OnFatalException();
 649     */
 650
 651     ::ExitProcess(3); // the same exit code as abort()
 652     return 0;
 653   }
 654 #endif //debug
 655 }
 656
 657 #else /*  _WINDLL  */
 658
 659 //// Entry point for DLLs
 660
 661 int wxEntry(WXHINSTANCE hInstance)
 662 {
 663   wxhInstance = (HINSTANCE) hInstance;
 664   wxApp::Initialize();
 665
 666   // The app may have declared a global application object, but we recommend
 667   // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 668   // for delayed, dynamic app object construction.
 669
 670   if (!wxTheApp)
 671   {
 672     if (!wxApp::GetInitializerFunction())
 673     {
 674       MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 675     return 0;
 676     }
 677
 678     wxTheApp = (* wxApp::GetInitializerFunction()) ();
 679   }
 680
 681   if (!wxTheApp) {
 682     MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 683     return 0;
 684   }
 685
 686   wxTheApp->argc = 0;
 687   wxTheApp->argv = NULL;
 688
 689   wxTheApp->OnInitGui();
 690
 691   wxTheApp->OnInit();
 692
 693   if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
 694     wxTheApp->GetTopWindow()->Show(TRUE);
 695   }
 696
 697   return 1;
 698 }
 699 #endif // _WINDLL
 700
 701 //// Static member initialization
 702
 703 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 704
 705 wxApp::wxApp()
 706 {
 707   m_topWindow = NULL;
 708   wxTheApp = this;
 709   m_className = "";
 710   m_wantDebugOutput = TRUE ;
 711   m_appName = "";
 712   argc = 0;
 713   argv = NULL;
 714 #ifdef __WXMSW__
 715   m_printMode = wxPRINT_WINDOWS;
 716 #else
 717   m_printMode = wxPRINT_POSTSCRIPT;
 718 #endif
 719   m_exitOnFrameDelete = TRUE;
 720   m_auto3D = TRUE;
 721 }
 722
 723 wxApp::~wxApp()
 724 {
 725   // Delete command-line args
 726   int i;
 727   for (i = 0; i < argc; i++)
 728   {
 729     delete[] argv[i];
 730   }
 731   delete[] argv;
 732 }
 733
 734 bool wxApp::Initialized()
 735 {
 736 #ifndef _WINDLL
 737   if (GetTopWindow())
 738     return TRUE;
 739   else
 740     return FALSE;
 741 #endif
 742 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 743   return TRUE;
 744 #endif
 745 }
 746
 747 /*
 748  * Get and process a message, returning FALSE if WM_QUIT
 749  * received (and also set the flag telling the app to exit the main loop)
 750  *
 751  */
 752 bool wxApp::DoMessage()
 753 {
 754     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 755     if ( rc == 0 )
 756     {
 757         // got WM_QUIT
 758         m_keepGoing = FALSE;
 759
 760         return FALSE;
 761     }
 762     else if ( rc == -1 )
 763     {
 764         // should never happen, but let's test for it nevertheless
 765         wxLogLastError("GetMessage");
 766     }
 767     else
 768     {
 769 #if wxUSE_THREADS
 770         wxASSERT_MSG( wxThread::IsMain(),
 771                       "only the main thread can process Windows messages" );
 772
 773         static bool s_hadGuiLock = TRUE;
 774         static wxMsgArray s_aSavedMessages;
 775
 776         // if a secondary thread owns is doing GUI calls, save all messages for
 777         // later processing - we can't process them right now because it will
 778         // lead to recursive library calls (and we're not reentrant)
 779         if ( !wxGuiOwnedByMainThread() )
 780         {
 781             s_hadGuiLock = FALSE;
 782
 783             s_aSavedMessages.Add(s_currentMsg);
 784
 785             return TRUE;
 786         }
 787         else
 788         {
 789             // have we just regained the GUI lock? if so, post all of the saved
 790             // messages
 791             //
 792             // FIXME of course, it's not _exactly_ the same as processing the
 793             //       messages normally - expect some things to break...
 794             if ( !s_hadGuiLock )
 795             {
 796                 s_hadGuiLock = TRUE;
 797
 798                 size_t count = s_aSavedMessages.Count();
 799                 for ( size_t n = 0; n < count; n++ )
 800                 {
 801                     MSG& msg = s_aSavedMessages[n];
 802
 803                     if ( !ProcessMessage((WXMSG *)&msg) )
 804                     {
 805                         ::TranslateMessage(&msg);
 806                         ::DispatchMessage(&msg);
 807                     }
 808                 }
 809
 810                 s_aSavedMessages.Empty();
 811             }
 812         }
 813 #endif // wxUSE_THREADS
 814
 815         // Process the message
 816         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 817         {
 818             ::TranslateMessage(&s_currentMsg);
 819             wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
 820             ::DispatchMessage(&s_currentMsg);
 821         }
 822     }
 823
 824     return TRUE;
 825 }
 826
 827 /*
 828  * Keep trying to process messages until WM_QUIT
 829  * received.
 830  *
 831  * If there are messages to be processed, they will all be
 832  * processed and OnIdle will not be called.
 833  * When there are no more messages, OnIdle is called.
 834  * If OnIdle requests more time,
 835  * it will be repeatedly called so long as there are no pending messages.
 836  * A 'feature' of this is that once OnIdle has decided that no more processing
 837  * is required, then it won't get processing time until further messages
 838  * are processed (it'll sit in DoMessage).
 839  */
 840
 841 int wxApp::MainLoop()
 842 {
 843   m_keepGoing = TRUE;
 844
 845   while ( m_keepGoing )
 846   {
 847     #if wxUSE_THREADS
 848         wxMutexGuiLeaveOrEnter();
 849     #endif // wxUSE_THREADS
 850
 851     while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 852             ProcessIdle() )
 853     {
 854     }
 855
 856     DoMessage();
 857   }
 858
 859   return s_currentMsg.wParam;
 860 }
 861
 862 // Returns TRUE if more time is needed.
 863 bool wxApp::ProcessIdle()
 864 {
 865     wxIdleEvent event;
 866     event.SetEventObject(this);
 867     ProcessEvent(event);
 868
 869     return event.MoreRequested();
 870 }
 871
 872 void wxApp::ExitMainLoop()
 873 {
 874   m_keepGoing = FALSE;
 875 }
 876
 877 bool wxApp::Pending()
 878 {
 879   return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 880 }
 881
 882 void wxApp::Dispatch()
 883 {
 884     DoMessage();
 885 }
 886
 887 /*
 888  * Give all windows a chance to preprocess
 889  * the message. Some may have accelerator tables, or have
 890  * MDI complications.
 891  */
 892 bool wxApp::ProcessMessage(WXMSG *Msg)
 893 {
 894   MSG *msg = (MSG *)Msg;
 895
 896   HWND hWnd;
 897
 898   // Try translations first; find the youngest window with
 899   // a translation table.
 900   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 901   {
 902     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 903     if (wnd)
 904     {
 905        if (wnd->MSWTranslateMessage(Msg))
 906          return TRUE;
 907     }
 908   }
 909
 910   // Anyone for a non-translation message? Try youngest descendants first.
 911   for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd))
 912   {
 913     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 914     if (wnd)
 915     {
 916        if (wnd->MSWProcessMessage(Msg))
 917          return TRUE;
 918     }
 919   }
 920   return FALSE;
 921 }
 922
 923 void wxApp::OnIdle(wxIdleEvent& event)
 924 {
 925     static bool s_inOnIdle = FALSE;
 926
 927     // Avoid recursion (via ProcessEvent default case)
 928     if ( s_inOnIdle )
 929         return;
 930
 931     s_inOnIdle = TRUE;
 932
 933     // 'Garbage' collection of windows deleted with Close().
 934     DeletePendingObjects();
 935
 936     // flush the logged messages if any
 937     wxLog *pLog = wxLog::GetActiveTarget();
 938     if ( pLog != NULL && pLog->HasPendingMessages() )
 939         pLog->Flush();
 940
 941     // Send OnIdle events to all windows
 942     if ( SendIdleEvents() )
 943     {
 944         // SendIdleEvents() returns TRUE if at least one window requested more
 945         // idle events
 946         event.RequestMore(TRUE);
 947     }
 948
 949     s_inOnIdle = FALSE;
 950 }
 951
 952 // Send idle event to all top-level windows
 953 bool wxApp::SendIdleEvents()
 954 {
 955     bool needMore = FALSE;
 956     wxNode* node = wxTopLevelWindows.First();
 957     while (node)
 958     {
 959         wxWindow* win = (wxWindow*) node->Data();
 960         if (SendIdleEvents(win))
 961             needMore = TRUE;
 962
 963         node = node->Next();
 964     }
 965
 966     return needMore;
 967 }
 968
 969 // Send idle event to window and all subwindows
 970 bool wxApp::SendIdleEvents(wxWindow* win)
 971 {
 972   bool needMore = FALSE;
 973
 974   wxIdleEvent event;
 975   event.SetEventObject(win);
 976   win->GetEventHandler()->ProcessEvent(event);
 977
 978   if (event.MoreRequested())
 979     needMore = TRUE;
 980
 981   wxNode* node = win->GetChildren().First();
 982   while (node)
 983   {
 984     wxWindow* win = (wxWindow*) node->Data();
 985     if (SendIdleEvents(win))
 986       needMore = TRUE;
 987
 988     node = node->Next();
 989   }
 990   return needMore ;
 991 }
 992
 993 void wxApp::DeletePendingObjects()
 994 {
 995   wxNode *node = wxPendingDelete.First();
 996   while (node)
 997   {
 998     wxObject *obj = (wxObject *)node->Data();
 999
1000     delete obj;
1001
1002     if (wxPendingDelete.Member(obj))
1003       delete node;
1004
1005     // Deleting one object may have deleted other pending
1006     // objects, so start from beginning of list again.
1007     node = wxPendingDelete.First();
1008   }
1009 }
1010
1011 void wxApp::OnEndSession(wxCloseEvent& event)
1012 {
1013     if (GetTopWindow())
1014         GetTopWindow()->Close(TRUE);
1015 }
1016
1017 // Default behaviour: close the application with prompts. The
1018 // user can veto the close, and therefore the end session.
1019 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1020 {
1021     if (GetTopWindow())
1022     {
1023         if (!GetTopWindow()->Close(!event.CanVeto()))
1024             event.Veto(TRUE);
1025     }
1026 }
1027
1028 wxLog* wxApp::CreateLogTarget()
1029 {
1030     return new wxLogGui;
1031 }
1032
1033 wxWindow* wxApp::GetTopWindow() const
1034 {
1035     if (m_topWindow)
1036         return m_topWindow;
1037     else if (wxTopLevelWindows.Number() > 0)
1038         return (wxWindow*) wxTopLevelWindows.First()->Data();
1039     else
1040         return NULL;
1041 }
1042
1043 int wxApp::GetComCtl32Version() const
1044 {
1045     // have we loaded COMCTL32 yet?
1046     HMODULE theModule = ::GetModuleHandle("COMCTL32");
1047     int version = 0;
1048
1049     // if so, then we can check for the version
1050     if (theModule)
1051     {
1052         // InitCommonControlsEx is unique to 4.7 and later
1053         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1054
1055         if (! theProc)
1056         {                    // not found, must be 4.00
1057       version = 400;
1058         }
1059         else
1060         {
1061       // The following symbol are unique to 4.71
1062       //   DllInstall
1063       //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1064       //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1065       //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1066       //   FlatSB_ShowScrollBar
1067       //   _DrawIndirectImageList _DuplicateImageList
1068       //   InitializeFlatSB
1069       //   UninitializeFlatSB
1070       // we could check for any of these - I chose DllInstall
1071       FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1072       if (! theProc)
1073       {
1074         // not found, must be 4.70
1075         version = 470;
1076       }
1077       else
1078       {                         // found, must be 4.71
1079         version = 471;
1080       }
1081         }
1082     }
1083     return version;
1084 }
1085
1086 void wxExit()
1087 {
1088   wxApp::CleanUp();
1089   FatalAppExit(0, "Fatal error: exiting");
1090 }
1091
1092 // Yield to incoming messages
1093 bool wxYield()
1094 {
1095   MSG msg;
1096   // We want to go back to the main message loop
1097   // if we see a WM_QUIT. (?)
1098   while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1099   {
1100     if ( !wxTheApp->DoMessage() )
1101       break;
1102   }
1103
1104   return TRUE;
1105 }
1106
1107 HINSTANCE wxGetInstance()
1108 {
1109   return wxhInstance;
1110 }
1111
1112 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1113 // if in a separate file. So include it here to ensure it's linked.
1114 #if (defined(_MSC_VER) && !defined(__WIN32__)) || defined(__GNUWIN32__)
1115   #include "main.cpp"
1116 #endif