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   #include "wx/dynarray.h"
  38 #endif
  39
  40 #include "wx/msw/private.h"
  41 #include "wx/log.h"
  42 #include "wx/module.h"
  43
  44 #if wxUSE_THREADS
  45     #include "wx/thread.h"
  46
  47     // define the array of MSG strutures
  48     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  49
  50     #include "wx/arrimpl.cpp"
  51
  52     WX_DEFINE_OBJARRAY(wxMsgArray);
  53 #endif // wxUSE_THREADS
  54
  55 #if wxUSE_WX_RESOURCES
  56   #include "wx/resource.h"
  57 #endif
  58
  59 // To UG: there's no point in putting this #if here
  60 // if you don't do the same for the Ole calls further down.
  61 // Also, OLE is used not just for drag and drop (it's used by automatn.cpp).
  62 // #if wxUSE_DRAG_AND_DROP
  63 #if !defined(__GNUWIN32__) && !defined(__SC__) && !defined(__SALFORDC__)
  64     #include <ole2.h>
  65 #endif
  66
  67 #include <string.h>
  68 #include <ctype.h>
  69
  70 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__)
  71   #include <commctrl.h>
  72 #endif
  73
  74 #include "wx/msw/msvcrt.h"
  75
  76 extern char *wxBuffer;
  77 extern char *wxOsVersion;
  78 extern wxList *wxWinHandleList;
  79 extern wxList WXDLLEXPORT wxPendingDelete;
  80 extern void wxSetKeyboardHook(bool doIt);
  81 extern wxCursor *g_globalCursor;
  82
  83 HINSTANCE wxhInstance = 0;
  84 static MSG s_currentMsg;
  85 wxApp *wxTheApp = NULL;
  86
  87 // @@ why not const? and not static?
  88 char wxFrameClassName[]         = "wxFrameClass";
  89 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
  90 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
  91 char wxPanelClassName[]         = "wxPanelClass";
  92 char wxCanvasClassName[]        = "wxCanvasClass";
  93
  94 HICON wxSTD_FRAME_ICON = (HICON) NULL;
  95 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
  96 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
  97
  98 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
  99 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 100 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 101
 102 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 103
 104 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 105
 106 #if !USE_SHARED_LIBRARY
 107   IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 108
 109   BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 110       EVT_IDLE(wxApp::OnIdle)
 111       EVT_END_SESSION(wxApp::OnEndSession)
 112       EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 113   END_EVENT_TABLE()
 114 #endif
 115
 116 long wxApp::sm_lastMessageTime = 0;
 117
 118 #if defined(__WIN95__) && !defined(__TWIN32__)
 119 #define wxUSE_RICHEDIT 1
 120 #else
 121 #define wxUSE_RICHEDIT 0
 122 #endif
 123
 124 #if wxUSE_RICHEDIT
 125   static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
 126 #endif
 127
 128 //// Initialize
 129
 130 bool wxApp::Initialize()
 131 {
 132     // Some people may wish to use this, but
 133     // probably it shouldn't be here by default.
 134 #ifdef __WXDEBUG__
 135 //    wxRedirectIOToConsole();
 136 #endif
 137
 138     wxBuffer = new char[1500];
 139
 140     wxClassInfo::InitializeClasses();
 141
 142 #if wxUSE_RESOURCES
 143     wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 144 #endif
 145
 146     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 147     wxTheColourDatabase->Initialize();
 148
 149     wxInitializeStockLists();
 150     wxInitializeStockObjects();
 151
 152 #if wxUSE_WX_RESOURCES
 153     wxInitializeResourceSystem();
 154 #endif
 155
 156     wxBitmap::InitStandardHandlers();
 157
 158 #if defined(__WIN95__)
 159     InitCommonControls();
 160
 161 #if wxUSE_RICHEDIT
 162     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 163
 164     if (gs_hRichEdit == (HINSTANCE) NULL)
 165     {
 166       wxMessageBox("Could not initialise Rich Edit DLL");
 167     }
 168 #endif
 169
 170 #endif
 171
 172     int iMsg = 96;
 173
 174    // for OLE, enlarge message queue to be as large as possible
 175    while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 176
 177 /*
 178     DWORD dwOleVer;
 179     dwOleVer = CoBuildVersion();
 180
 181     // check the OLE library version
 182     if (rmm != HIWORD(dwOleVer))
 183     {
 184         wxMessageBox("Incorrect version of OLE libraries.");
 185         return FALSE;
 186     }
 187 */
 188
 189 #if !defined(__GNUWIN32__) && !defined(__SC__) && !defined(__SALFORDC__)
 190     // we need to initialize OLE library
 191     if ( FAILED(::OleInitialize(NULL)) )
 192       wxFatalError(_("Cannot initialize OLE"));
 193 #endif
 194
 195 #if wxUSE_CTL3D
 196     if (!Ctl3dRegister(wxhInstance))
 197       wxFatalError("Cannot register CTL3D");
 198
 199     Ctl3dAutoSubclass(wxhInstance);
 200 #endif
 201
 202     g_globalCursor = new wxCursor;
 203
 204     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 205     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 206     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 207
 208     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 209     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 210     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 211
 212     RegisterWindowClasses();
 213
 214     // Create the brush for disabling bitmap buttons
 215
 216     LOGBRUSH lb ;
 217     lb.lbStyle = BS_PATTERN;
 218     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 219     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 220     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 221
 222 #if wxUSE_PENWINDOWS
 223     wxRegisterPenWin();
 224 #endif
 225
 226     wxWinHandleList = new wxList(wxKEY_INTEGER);
 227
 228     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 229     // PLEASE DO NOT ALTER THIS.
 230 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 231     extern char wxDummyChar;
 232     if (wxDummyChar) wxDummyChar++;
 233 #endif
 234
 235     wxSetKeyboardHook(TRUE);
 236
 237     wxModule::RegisterModules();
 238     if (!wxModule::InitializeModules())
 239         return FALSE;
 240     return TRUE;
 241 }
 242
 243 //// RegisterWindowClasses
 244
 245 bool wxApp::RegisterWindowClasses()
 246 {
 247 ///////////////////////////////////////////////////////////////////////
 248 // Register the frame window class.
 249   WNDCLASS wndclass;   // Structure used to register Windows class.
 250
 251   wndclass.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 252   wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 253   wndclass.cbClsExtra    = 0;
 254   wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 255   wndclass.hInstance     = wxhInstance;
 256   wndclass.hIcon         = (HICON) NULL;        // wxSTD_FRAME_ICON;
 257   wndclass.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 258   wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 259 //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 260   wndclass.lpszMenuName  = NULL;
 261 #ifdef _MULTIPLE_INSTANCES
 262   sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 263 #endif
 264   wndclass.lpszClassName = wxFrameClassName;
 265
 266   if (!RegisterClass( &wndclass ))
 267   {
 268     // wxFatalError("Can't register Frame Window class");
 269   }
 270
 271 ///////////////////////////////////////////////////////////////////////
 272 // Register the MDI frame window class.
 273   WNDCLASS wndclass1;   // Structure used to register Windows class.
 274
 275   wndclass1.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 276   wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 277   wndclass1.cbClsExtra    = 0;
 278   wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 279   wndclass1.hInstance     = wxhInstance;
 280   wndclass1.hIcon         = (HICON) NULL; // wxSTD_MDIPARENTFRAME_ICON;
 281   wndclass1.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 282 //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 283   wndclass1.hbrBackground = (HBRUSH) NULL;
 284   wndclass1.lpszMenuName  = NULL;
 285
 286   wndclass1.lpszClassName = wxMDIFrameClassName;
 287   if (!RegisterClass( &wndclass1 ))
 288   {
 289 //    wxFatalError("Can't register MDI Frame window class");
 290 //  return FALSE;
 291   }
 292
 293 ///////////////////////////////////////////////////////////////////////
 294 // Register the MDI child frame window class.
 295   WNDCLASS wndclass4;   // Structure used to register Windows class.
 296
 297   wndclass4.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 298   wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 299   wndclass4.cbClsExtra    = 0;
 300   wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 301   wndclass4.hInstance     = wxhInstance;
 302   wndclass4.hIcon         = (HICON) NULL;       // wxSTD_MDICHILDFRAME_ICON;
 303   wndclass4.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 304   // TODO: perhaps this should be NULL so that Windows doesn't
 305   // paint the background itself (would OnEraseBackground duplicate
 306   // this?)
 307   wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 308 //  wndclass4.hbrBackground = NULL;
 309   wndclass4.lpszMenuName  = NULL;
 310   wndclass4.lpszClassName = wxMDIChildFrameClassName;
 311
 312   if (!RegisterClass( &wndclass4 ))
 313   {
 314 //   wxFatalError("Can't register MDI child frame window class");
 315 //   return FALSE;
 316   }
 317
 318 ///////////////////////////////////////////////////////////////////////
 319 // Register the panel window class.
 320   WNDCLASS wndclass2;   // Structure used to register Windows class.
 321   memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 322   // Use CS_OWNDC to avoid messing about restoring the context
 323   // for every graphic operation.
 324   wndclass2.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 325   wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 326   wndclass2.cbClsExtra    = 0;
 327   wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 328   wndclass2.hInstance     = wxhInstance;
 329   wndclass2.hIcon         = (HICON) NULL;
 330   wndclass2.hCursor       = (HCURSOR) NULL;
 331 //  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
 332   wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 333   wndclass2.lpszMenuName  = NULL;
 334   wndclass2.lpszClassName = wxPanelClassName;
 335   if (!RegisterClass( &wndclass2 ))
 336   {
 337 //   wxFatalError("Can't register Panel Window class");
 338 //   return FALSE;
 339   }
 340
 341 ///////////////////////////////////////////////////////////////////////
 342 // Register the canvas and textsubwindow class name
 343   WNDCLASS wndclass3;   // Structure used to register Windows class.
 344   memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
 345   // Use CS_OWNDC to avoid messing about restoring the context
 346   // for every graphic operation.
 347 //  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
 348   // wxWin 2.0
 349   wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 350   wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
 351   wndclass3.cbClsExtra    = 0;
 352   wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
 353   wndclass3.hInstance     = wxhInstance;
 354   wndclass3.hIcon         = (HICON) NULL;
 355   wndclass3.hCursor       = (HCURSOR) NULL;
 356 //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 357   wndclass3.hbrBackground = (HBRUSH) NULL;
 358   wndclass3.lpszMenuName  = NULL;
 359   wndclass3.lpszClassName = wxCanvasClassName;
 360   if (!RegisterClass( &wndclass3))
 361   {
 362 //   wxFatalError("Can't register Canvas class");
 363 //   return FALSE;
 364   }
 365
 366   return TRUE;
 367 }
 368
 369 //// Convert Windows to argc, argv style
 370
 371 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 372 {
 373     wxStringList args;
 374
 375     wxString cmdLine(lpCmdLine);
 376     int count = 0;
 377
 378     // Get application name
 379     char name[260]; // 260 is MAX_PATH value from windef.h
 380     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 381
 382     // GNUWIN32 already fills in the first arg with the application name.
 383 #if !defined(__GNUWIN32__)
 384     args.Add(name);
 385     count ++;
 386 #endif
 387
 388     strcpy(name, wxFileNameFromPath(name));
 389     wxStripExtension(name);
 390     wxTheApp->SetAppName(name);
 391
 392     // Break up string
 393     // Treat strings enclosed in double-quotes as single arguments
 394     int i = 0;
 395     int len = cmdLine.Length();
 396     while (i < len)
 397     {
 398         // Skip whitespace
 399         while ((i < len) && isspace(cmdLine.GetChar(i)))
 400             i ++;
 401
 402         if (i < len)
 403         {
 404             if (cmdLine.GetChar(i) == '"') // We found the start of a string
 405             {
 406                 i ++;
 407                 int first = i;
 408                 while ((i < len) && (cmdLine.GetChar(i) != '"'))
 409                     i ++;
 410
 411                 wxString arg(cmdLine.Mid(first, (i - first)));
 412
 413                 args.Add(arg);
 414                 count ++;
 415
 416                 if (i < len)
 417                     i ++; // Skip past 2nd quote
 418             }
 419             else // Unquoted argument
 420             {
 421                 int first = i;
 422                 while ((i < len) && !isspace(cmdLine.GetChar(i)))
 423                     i ++;
 424
 425                 wxString arg(cmdLine.Mid(first, (i - first)));
 426
 427                 args.Add(arg);
 428                 count ++;
 429             }
 430         }
 431     }
 432
 433     wxTheApp->argv = new char*[count + 1];
 434     for (i = 0; i < count; i++)
 435     {
 436         wxString arg(args[i]);
 437         wxTheApp->argv[i] = copystring((const char*)arg);
 438     }
 439     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 440     wxTheApp->argc = count;
 441 }
 442
 443 //// Cleans up any wxWindows internal structures left lying around
 444
 445 void wxApp::CleanUp()
 446 {
 447   //// COMMON CLEANUP
 448
 449   // flush the logged messages if any
 450   wxLog *pLog = wxLog::GetActiveTarget();
 451   if ( pLog != NULL && pLog->HasPendingMessages() )
 452     pLog->Flush();
 453
 454   // One last chance for pending objects to be cleaned up
 455   wxTheApp->DeletePendingObjects();
 456
 457   wxModule::CleanUpModules();
 458
 459 #if wxUSE_WX_RESOURCES
 460   wxCleanUpResourceSystem();
 461
 462 //  wxDefaultResourceTable->ClearTable();
 463 #endif
 464
 465   // Indicate that the cursor can be freed,
 466   // so that cursor won't be deleted by deleting
 467   // the bitmap list before g_globalCursor goes out
 468   // of scope (double deletion of the cursor).
 469   wxSetCursor(wxNullCursor);
 470   delete g_globalCursor;
 471
 472   wxDeleteStockObjects() ;
 473
 474   // Destroy all GDI lists, etc.
 475   wxDeleteStockLists();
 476
 477   delete wxTheColourDatabase;
 478   wxTheColourDatabase = NULL;
 479
 480   wxBitmap::CleanUpHandlers();
 481
 482   delete[] wxBuffer;
 483   wxBuffer = NULL;
 484
 485   //// WINDOWS-SPECIFIC CLEANUP
 486
 487   wxSetKeyboardHook(FALSE);
 488
 489 #ifdef __WIN95__
 490
 491 #if wxUSE_RICHEDIT
 492   if (gs_hRichEdit != (HINSTANCE) NULL)
 493     FreeLibrary(gs_hRichEdit);
 494 #endif
 495
 496 #endif
 497
 498 #if wxUSE_PENWINDOWS
 499   wxCleanUpPenWin();
 500 #endif
 501
 502   if (wxSTD_FRAME_ICON)
 503     DestroyIcon(wxSTD_FRAME_ICON);
 504   if (wxSTD_MDICHILDFRAME_ICON)
 505     DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 506   if (wxSTD_MDIPARENTFRAME_ICON)
 507     DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 508
 509   if (wxDEFAULT_FRAME_ICON)
 510     DestroyIcon(wxDEFAULT_FRAME_ICON);
 511   if (wxDEFAULT_MDICHILDFRAME_ICON)
 512     DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 513   if (wxDEFAULT_MDIPARENTFRAME_ICON)
 514     DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 515
 516   if ( wxDisableButtonBrush )
 517     ::DeleteObject( wxDisableButtonBrush ) ;
 518
 519 #if !defined(__GNUWIN32__) && !defined(__SC__) && !defined(__SALFORDC__)
 520   ::OleUninitialize();
 521 #endif
 522
 523 #if wxUSE_CTL3D
 524   Ctl3dUnregister(wxhInstance);
 525 #endif
 526
 527   if (wxWinHandleList)
 528     delete wxWinHandleList ;
 529
 530   wxClassInfo::CleanUpClasses();
 531
 532   delete wxTheApp;
 533   wxTheApp = NULL;
 534
 535 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 536   // At this point we want to check if there are any memory
 537   // blocks that aren't part of the wxDebugContext itself,
 538   // as a special case. Then when dumping we need to ignore
 539   // wxDebugContext, too.
 540   if (wxDebugContext::CountObjectsLeft() > 0)
 541   {
 542       wxLogDebug("There were memory leaks.");
 543       wxDebugContext::Dump();
 544       wxDebugContext::PrintStatistics();
 545   }
 546 //  wxDebugContext::SetStream(NULL, NULL);
 547 #endif
 548
 549   // do it as the very last thing because everything else can log messages
 550   wxLog::DontCreateOnDemand();
 551   delete wxLog::SetActiveTarget(NULL);
 552 }
 553
 554 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 555
 556 // temporarily disable this warning
 557 #ifdef __VISUALC__
 558     #pragma warning(disable: 4715) // not all control paths return a value
 559 #endif // Visual C++
 560
 561 //// Main wxWindows entry point
 562 int wxEntry(WXHINSTANCE hInstance,
 563             WXHINSTANCE WXUNUSED(hPrevInstance),
 564             char *lpCmdLine,
 565             int nCmdShow,
 566             bool enterLoop)
 567 {
 568     // do check for memory leaks on program exit
 569     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 570     //  deallocated memory which may be used to simulate low-memory condition)
 571     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 572
 573   // take everything into a try-except block in release build
 574   // FIXME other compilers must support Win32 SEH (structured exception
 575   //       handling) too, just find the appropriate keyword in their docs!
 576   //       Please note that it's _not_ the same as C++ exceptions!
 577 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 578     #define CATCH_PROGRAM_EXCEPTIONS
 579
 580     __try {
 581 #else
 582     #undef  CATCH_PROGRAM_EXCEPTIONS
 583 #endif
 584
 585   wxhInstance = (HINSTANCE) hInstance;
 586
 587   if (!wxApp::Initialize())
 588     return 0;
 589
 590   // create the application object or ensure that one already exists
 591   if (!wxTheApp)
 592   {
 593     // The app may have declared a global application object, but we recommend
 594     // the IMPLEMENT_APP macro is used instead, which sets an initializer
 595     // function for delayed, dynamic app object construction.
 596     wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 597                  "No initializer - use IMPLEMENT_APP macro." );
 598
 599     wxTheApp = (*wxApp::GetInitializerFunction()) ();
 600   }
 601
 602   wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 603
 604   // save the WinMain() parameters
 605   wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 606   wxTheApp->m_nCmdShow = nCmdShow;
 607
 608   // GUI-specific initialisation. In fact on Windows we don't have any,
 609   // but this call is provided for compatibility across platforms.
 610   wxTheApp->OnInitGui() ;
 611
 612   int retValue = 0;
 613
 614   if ( wxTheApp->OnInit() )
 615   {
 616       if ( enterLoop )
 617       {
 618           retValue = wxTheApp->OnRun();
 619       }
 620       else
 621         // We want to initialize, but not run or exit immediately.
 622         return 1;
 623   }
 624   //else: app initialization failed, so we skipped OnRun()
 625
 626   wxWindow *topWindow = wxTheApp->GetTopWindow();
 627   if ( topWindow )
 628   {
 629       // Forcibly delete the window.
 630       if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 631            topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 632       {
 633           topWindow->Close(TRUE);
 634           wxTheApp->DeletePendingObjects();
 635       }
 636       else
 637       {
 638           delete topWindow;
 639           wxTheApp->SetTopWindow(NULL);
 640       }
 641   }
 642
 643   wxTheApp->OnExit();
 644
 645   wxApp::CleanUp();
 646
 647   return retValue;
 648
 649 #ifdef CATCH_PROGRAM_EXCEPTIONS
 650   }
 651   __except ( EXCEPTION_EXECUTE_HANDLER ) {
 652     /*
 653     if ( wxTheApp )
 654       wxTheApp->OnFatalException();
 655     */
 656
 657     ::ExitProcess(3); // the same exit code as abort()
 658
 659     // NOTREACHED
 660   }
 661 #endif // CATCH_PROGRAM_EXCEPTIONS
 662 }
 663
 664 // restore warning state
 665 #ifdef __VISUALC__
 666     #pragma warning(default: 4715) // not all control paths return a value
 667 #endif // Visual C++
 668
 669 #else /*  _WINDLL  */
 670
 671 //// Entry point for DLLs
 672
 673 int wxEntry(WXHINSTANCE hInstance)
 674 {
 675   wxhInstance = (HINSTANCE) hInstance;
 676   wxApp::Initialize();
 677
 678   // The app may have declared a global application object, but we recommend
 679   // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 680   // for delayed, dynamic app object construction.
 681
 682   if (!wxTheApp)
 683   {
 684     if (!wxApp::GetInitializerFunction())
 685     {
 686       MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 687     return 0;
 688     }
 689
 690     wxTheApp = (* wxApp::GetInitializerFunction()) ();
 691   }
 692
 693   if (!wxTheApp) {
 694     MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 695     return 0;
 696   }
 697
 698   wxTheApp->argc = 0;
 699   wxTheApp->argv = NULL;
 700
 701   wxTheApp->OnInitGui();
 702
 703   wxTheApp->OnInit();
 704
 705   if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) {
 706     wxTheApp->GetTopWindow()->Show(TRUE);
 707   }
 708
 709   return 1;
 710 }
 711 #endif // _WINDLL
 712
 713 //// Static member initialization
 714
 715 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 716
 717 wxApp::wxApp()
 718 {
 719   m_topWindow = NULL;
 720   wxTheApp = this;
 721   m_className = "";
 722   m_wantDebugOutput = TRUE ;
 723   m_appName = "";
 724   argc = 0;
 725   argv = NULL;
 726 #ifdef __WXMSW__
 727   m_printMode = wxPRINT_WINDOWS;
 728 #else
 729   m_printMode = wxPRINT_POSTSCRIPT;
 730 #endif
 731   m_exitOnFrameDelete = TRUE;
 732   m_auto3D = TRUE;
 733 }
 734
 735 wxApp::~wxApp()
 736 {
 737   // Delete command-line args
 738   int i;
 739   for (i = 0; i < argc; i++)
 740   {
 741     delete[] argv[i];
 742   }
 743   delete[] argv;
 744 }
 745
 746 bool wxApp::Initialized()
 747 {
 748 #ifndef _WINDLL
 749   if (GetTopWindow())
 750     return TRUE;
 751   else
 752     return FALSE;
 753 #endif
 754 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 755   return TRUE;
 756 #endif
 757 }
 758
 759 /*
 760  * Get and process a message, returning FALSE if WM_QUIT
 761  * received (and also set the flag telling the app to exit the main loop)
 762  *
 763  */
 764 bool wxApp::DoMessage()
 765 {
 766     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 767     if ( rc == 0 )
 768     {
 769         // got WM_QUIT
 770         m_keepGoing = FALSE;
 771
 772         return FALSE;
 773     }
 774     else if ( rc == -1 )
 775     {
 776         // should never happen, but let's test for it nevertheless
 777         wxLogLastError("GetMessage");
 778     }
 779     else
 780     {
 781 #if wxUSE_THREADS
 782         wxASSERT_MSG( wxThread::IsMain(),
 783                       "only the main thread can process Windows messages" );
 784
 785         static bool s_hadGuiLock = TRUE;
 786         static wxMsgArray s_aSavedMessages;
 787
 788         // if a secondary thread owns is doing GUI calls, save all messages for
 789         // later processing - we can't process them right now because it will
 790         // lead to recursive library calls (and we're not reentrant)
 791         if ( !wxGuiOwnedByMainThread() )
 792         {
 793             s_hadGuiLock = FALSE;
 794
 795             // leave out WM_COMMAND messages: too dangerous, sometimes
 796             // the message will be processed twice
 797             if ( !wxIsWaitingForThread() ||
 798                  s_currentMsg.message != WM_COMMAND )
 799             {
 800                 s_aSavedMessages.Add(s_currentMsg);
 801             }
 802
 803             return TRUE;
 804         }
 805         else
 806         {
 807             // have we just regained the GUI lock? if so, post all of the saved
 808             // messages
 809             //
 810             // FIXME of course, it's not _exactly_ the same as processing the
 811             //       messages normally - expect some things to break...
 812             if ( !s_hadGuiLock )
 813             {
 814                 s_hadGuiLock = TRUE;
 815
 816                 size_t count = s_aSavedMessages.Count();
 817                 for ( size_t n = 0; n < count; n++ )
 818                 {
 819                     MSG& msg = s_aSavedMessages[n];
 820
 821                     if ( !ProcessMessage((WXMSG *)&msg) )
 822                     {
 823                         ::TranslateMessage(&msg);
 824                         ::DispatchMessage(&msg);
 825                     }
 826                 }
 827
 828                 s_aSavedMessages.Empty();
 829             }
 830         }
 831 #endif // wxUSE_THREADS
 832
 833         // Process the message
 834         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 835         {
 836             ::TranslateMessage(&s_currentMsg);
 837             wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
 838             ::DispatchMessage(&s_currentMsg);
 839         }
 840     }
 841
 842     return TRUE;
 843 }
 844
 845 /*
 846  * Keep trying to process messages until WM_QUIT
 847  * received.
 848  *
 849  * If there are messages to be processed, they will all be
 850  * processed and OnIdle will not be called.
 851  * When there are no more messages, OnIdle is called.
 852  * If OnIdle requests more time,
 853  * it will be repeatedly called so long as there are no pending messages.
 854  * A 'feature' of this is that once OnIdle has decided that no more processing
 855  * is required, then it won't get processing time until further messages
 856  * are processed (it'll sit in DoMessage).
 857  */
 858
 859 int wxApp::MainLoop()
 860 {
 861   m_keepGoing = TRUE;
 862
 863   while ( m_keepGoing )
 864   {
 865     #if wxUSE_THREADS
 866         wxMutexGuiLeaveOrEnter();
 867     #endif // wxUSE_THREADS
 868
 869     while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 870             ProcessIdle() )
 871     {
 872     }
 873
 874     DoMessage();
 875   }
 876
 877   return s_currentMsg.wParam;
 878 }
 879
 880 // Returns TRUE if more time is needed.
 881 bool wxApp::ProcessIdle()
 882 {
 883     wxIdleEvent event;
 884     event.SetEventObject(this);
 885     ProcessEvent(event);
 886
 887     return event.MoreRequested();
 888 }
 889
 890 void wxApp::ExitMainLoop()
 891 {
 892   m_keepGoing = FALSE;
 893 }
 894
 895 bool wxApp::Pending()
 896 {
 897   return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 898 }
 899
 900 void wxApp::Dispatch()
 901 {
 902     DoMessage();
 903 }
 904
 905 /*
 906  * Give all windows a chance to preprocess
 907  * the message. Some may have accelerator tables, or have
 908  * MDI complications.
 909  */
 910 bool wxApp::ProcessMessage(WXMSG *Msg)
 911 {
 912   MSG *msg = (MSG *)Msg;
 913
 914   HWND hWnd;
 915
 916   // Try translations first; find the youngest window with
 917   // a translation table.
 918   for (hWnd = msg->hwnd; hWnd != (HWND) NULL; hWnd = ::GetParent(hWnd))
 919   {
 920     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 921     if (wnd)
 922     {
 923        if (wnd->MSWTranslateMessage(Msg))
 924          return TRUE;
 925     }
 926   }
 927
 928   // Anyone for a non-translation message? Try youngest descendants first.
 929   for (hWnd = msg->hwnd; hWnd != (HWND) NULL; hWnd = ::GetParent(hWnd))
 930   {
 931     wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd);
 932     if (wnd)
 933     {
 934        if (wnd->MSWProcessMessage(Msg))
 935          return TRUE;
 936     }
 937   }
 938   return FALSE;
 939 }
 940
 941 void wxApp::OnIdle(wxIdleEvent& event)
 942 {
 943     static bool s_inOnIdle = FALSE;
 944
 945     // Avoid recursion (via ProcessEvent default case)
 946     if ( s_inOnIdle )
 947         return;
 948
 949     s_inOnIdle = TRUE;
 950
 951     // 'Garbage' collection of windows deleted with Close().
 952     DeletePendingObjects();
 953
 954     // flush the logged messages if any
 955     wxLog *pLog = wxLog::GetActiveTarget();
 956     if ( pLog != NULL && pLog->HasPendingMessages() )
 957         pLog->Flush();
 958
 959     // Send OnIdle events to all windows
 960     if ( SendIdleEvents() )
 961     {
 962         // SendIdleEvents() returns TRUE if at least one window requested more
 963         // idle events
 964         event.RequestMore(TRUE);
 965     }
 966
 967     s_inOnIdle = FALSE;
 968 }
 969
 970 // Send idle event to all top-level windows
 971 bool wxApp::SendIdleEvents()
 972 {
 973     bool needMore = FALSE;
 974     wxNode* node = wxTopLevelWindows.First();
 975     while (node)
 976     {
 977         wxWindow* win = (wxWindow*) node->Data();
 978         if (SendIdleEvents(win))
 979             needMore = TRUE;
 980
 981         node = node->Next();
 982     }
 983
 984     return needMore;
 985 }
 986
 987 // Send idle event to window and all subwindows
 988 bool wxApp::SendIdleEvents(wxWindow* win)
 989 {
 990   bool needMore = FALSE;
 991
 992   wxIdleEvent event;
 993   event.SetEventObject(win);
 994   win->GetEventHandler()->ProcessEvent(event);
 995
 996   if (event.MoreRequested())
 997     needMore = TRUE;
 998
 999   wxNode* node = win->GetChildren().First();
1000   while (node)
1001   {
1002     wxWindow* win = (wxWindow*) node->Data();
1003     if (SendIdleEvents(win))
1004       needMore = TRUE;
1005
1006     node = node->Next();
1007   }
1008   return needMore ;
1009 }
1010
1011 void wxApp::DeletePendingObjects()
1012 {
1013   wxNode *node = wxPendingDelete.First();
1014   while (node)
1015   {
1016     wxObject *obj = (wxObject *)node->Data();
1017
1018     delete obj;
1019
1020     if (wxPendingDelete.Member(obj))
1021       delete node;
1022
1023     // Deleting one object may have deleted other pending
1024     // objects, so start from beginning of list again.
1025     node = wxPendingDelete.First();
1026   }
1027 }
1028
1029 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1030 {
1031     if (GetTopWindow())
1032         GetTopWindow()->Close(TRUE);
1033 }
1034
1035 // Default behaviour: close the application with prompts. The
1036 // user can veto the close, and therefore the end session.
1037 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1038 {
1039     if (GetTopWindow())
1040     {
1041         if (!GetTopWindow()->Close(!event.CanVeto()))
1042             event.Veto(TRUE);
1043     }
1044 }
1045
1046 wxLog* wxApp::CreateLogTarget()
1047 {
1048     return new wxLogGui;
1049 }
1050
1051 wxWindow* wxApp::GetTopWindow() const
1052 {
1053     if (m_topWindow)
1054         return m_topWindow;
1055     else if (wxTopLevelWindows.Number() > 0)
1056         return (wxWindow*) wxTopLevelWindows.First()->Data();
1057     else
1058         return NULL;
1059 }
1060
1061 int wxApp::GetComCtl32Version() const
1062 {
1063     // have we loaded COMCTL32 yet?
1064     HMODULE theModule = ::GetModuleHandle("COMCTL32");
1065     int version = 0;
1066
1067     // if so, then we can check for the version
1068     if (theModule)
1069     {
1070         // InitCommonControlsEx is unique to 4.7 and later
1071         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1072
1073         if (! theProc)
1074         {                    // not found, must be 4.00
1075       version = 400;
1076         }
1077         else
1078         {
1079       // The following symbol are unique to 4.71
1080       //   DllInstall
1081       //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1082       //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1083       //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1084       //   FlatSB_ShowScrollBar
1085       //   _DrawIndirectImageList _DuplicateImageList
1086       //   InitializeFlatSB
1087       //   UninitializeFlatSB
1088       // we could check for any of these - I chose DllInstall
1089       FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1090       if (! theProc)
1091       {
1092         // not found, must be 4.70
1093         version = 470;
1094       }
1095       else
1096       {                         // found, must be 4.71
1097         version = 471;
1098       }
1099         }
1100     }
1101     return version;
1102 }
1103
1104 void wxExit()
1105 {
1106   wxApp::CleanUp();
1107   FatalAppExit(0, "Fatal error: exiting");
1108 }
1109
1110 // Yield to incoming messages
1111 bool wxYield()
1112 {
1113   MSG msg;
1114   // We want to go back to the main message loop
1115   // if we see a WM_QUIT. (?)
1116   while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1117   {
1118     if ( !wxTheApp->DoMessage() )
1119       break;
1120   }
1121
1122   return TRUE;
1123 }
1124
1125 HINSTANCE wxGetInstance()
1126 {
1127   return wxhInstance;
1128 }
1129
1130 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1131 // if in a separate file. So include it here to ensure it's linked.
1132 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1133   #include "main.cpp"
1134 #endif