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 // ===========================================================================
  13 // declarations
  14 // ===========================================================================
  15
  16 // ---------------------------------------------------------------------------
  17 // headers
  18 // ---------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "app.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #if defined(__BORLANDC__)
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/frame.h"
  33     #include "wx/app.h"
  34     #include "wx/utils.h"
  35     #include "wx/gdicmn.h"
  36     #include "wx/pen.h"
  37     #include "wx/brush.h"
  38     #include "wx/cursor.h"
  39     #include "wx/icon.h"
  40     #include "wx/palette.h"
  41     #include "wx/dc.h"
  42     #include "wx/dialog.h"
  43     #include "wx/msgdlg.h"
  44     #include "wx/intl.h"
  45     #include "wx/dynarray.h"
  46 #endif
  47
  48 #include "wx/msw/private.h"
  49 #include "wx/log.h"
  50 #include "wx/module.h"
  51
  52 #if wxUSE_THREADS
  53     #include "wx/thread.h"
  54
  55     // define the array of MSG strutures
  56     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  57
  58     #include "wx/arrimpl.cpp"
  59
  60     WX_DEFINE_OBJARRAY(wxMsgArray);
  61 #endif // wxUSE_THREADS
  62
  63 #if wxUSE_WX_RESOURCES
  64     #include "wx/resource.h"
  65 #endif
  66
  67 // OLE is used for drag-and-drop, clipboard, OLE Automation...
  68 #if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
  69     #undef wxUSE_OLE
  70
  71     #define  wxUSE_OLE 0
  72 #endif // broken compilers
  73
  74 #if wxUSE_OLE
  75     #include <ole2.h>
  76 #endif
  77
  78 #include <string.h>
  79 #include <ctype.h>
  80
  81 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__)
  82     #include <commctrl.h>
  83 #endif
  84
  85 #include "wx/msw/msvcrt.h"
  86
  87 // ---------------------------------------------------------------------------
  88 // global variables
  89 // ---------------------------------------------------------------------------
  90
  91 extern char *wxBuffer;
  92 extern char *wxOsVersion;
  93 extern wxList *wxWinHandleList;
  94 extern wxList WXDLLEXPORT wxPendingDelete;
  95 extern void wxSetKeyboardHook(bool doIt);
  96 extern wxCursor *g_globalCursor;
  97
  98 HINSTANCE wxhInstance = 0;
  99 static MSG s_currentMsg;
 100 wxApp *wxTheApp = NULL;
 101
 102 // FIXME why not const? and not static?
 103 char wxFrameClassName[]         = "wxFrameClass";
 104 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
 105 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
 106 char wxPanelClassName[]         = "wxPanelClass";
 107 char wxCanvasClassName[]        = "wxCanvasClass";
 108
 109 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 110 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 111 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 112
 113 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 114 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 115 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 116
 117 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 118
 119 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 120
 121 #if defined(__WIN95__) && !defined(__TWIN32__)
 122     #define wxUSE_RICHEDIT 1
 123 #else
 124     #define wxUSE_RICHEDIT 0
 125 #endif
 126
 127 #if wxUSE_RICHEDIT
 128     static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
 129 #endif
 130
 131 // ===========================================================================
 132 // implementation
 133 // ===========================================================================
 134
 135 // ---------------------------------------------------------------------------
 136 // wxApp
 137 // ---------------------------------------------------------------------------
 138
 139 #if !USE_SHARED_LIBRARY
 140     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 141
 142     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 143         EVT_IDLE(wxApp::OnIdle)
 144         EVT_END_SESSION(wxApp::OnEndSession)
 145         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 146     END_EVENT_TABLE()
 147 #endif
 148
 149 long wxApp::sm_lastMessageTime = 0;
 150
 151 //// Initialize
 152 bool wxApp::Initialize()
 153 {
 154     // Some people may wish to use this, but
 155     // probably it shouldn't be here by default.
 156 #ifdef __WXDEBUG__
 157     //    wxRedirectIOToConsole();
 158 #endif
 159
 160     wxBuffer = new char[1500]; // FIXME
 161
 162     wxClassInfo::InitializeClasses();
 163
 164 #if wxUSE_RESOURCES
 165     wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
 166 #endif
 167
 168     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 169     wxTheColourDatabase->Initialize();
 170
 171     wxInitializeStockLists();
 172     wxInitializeStockObjects();
 173
 174 #if wxUSE_WX_RESOURCES
 175     wxInitializeResourceSystem();
 176 #endif
 177
 178     wxBitmap::InitStandardHandlers();
 179
 180 #if defined(__WIN95__)
 181     InitCommonControls();
 182
 183 #if wxUSE_RICHEDIT
 184     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 185
 186     if (gs_hRichEdit == (HINSTANCE) NULL)
 187     {
 188         wxLogError(_("Could not initialise Rich Edit DLL"));
 189     }
 190 #endif // wxUSE_RICHEDIT
 191
 192 #endif // __WIN95__
 193
 194     // for OLE, enlarge message queue to be as large as possible
 195     int iMsg = 96;
 196     while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 197
 198     /*
 199        DWORD dwOleVer;
 200        dwOleVer = CoBuildVersion();
 201
 202     // check the OLE library version
 203     if (rmm != HIWORD(dwOleVer))
 204     {
 205     wxMessageBox("Incorrect version of OLE libraries.");
 206     return FALSE;
 207     }
 208      */
 209
 210 #if wxUSE_OLE
 211     // we need to initialize OLE library
 212     if ( FAILED(::OleInitialize(NULL)) )
 213         wxLogError(_("Cannot initialize OLE"));
 214 #endif
 215
 216 #if wxUSE_CTL3D
 217     if (!Ctl3dRegister(wxhInstance))
 218         wxLogError("Cannot register CTL3D");
 219
 220     Ctl3dAutoSubclass(wxhInstance);
 221 #endif
 222
 223     g_globalCursor = new wxCursor;
 224
 225     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 226     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 227     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 228
 229     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 230     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 231     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 232
 233     RegisterWindowClasses();
 234
 235     // Create the brush for disabling bitmap buttons
 236
 237     LOGBRUSH lb ;
 238     lb.lbStyle = BS_PATTERN;
 239     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 240     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 241     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 242
 243 #if wxUSE_PENWINDOWS
 244     wxRegisterPenWin();
 245 #endif
 246
 247     wxWinHandleList = new wxList(wxKEY_INTEGER);
 248
 249     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 250     // PLEASE DO NOT ALTER THIS.
 251 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 252     extern char wxDummyChar;
 253     if (wxDummyChar) wxDummyChar++;
 254 #endif
 255
 256     wxSetKeyboardHook(TRUE);
 257
 258     wxModule::RegisterModules();
 259     if (!wxModule::InitializeModules())
 260         return FALSE;
 261     return TRUE;
 262 }
 263
 264 //// RegisterWindowClasses
 265
 266 bool wxApp::RegisterWindowClasses()
 267 {
 268     ///////////////////////////////////////////////////////////////////////
 269     // Register the frame window class.
 270     WNDCLASS wndclass;   // Structure used to register Windows class.
 271
 272     wndclass.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 273     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 274     wndclass.cbClsExtra    = 0;
 275     wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 276     wndclass.hInstance     = wxhInstance;
 277     wndclass.hIcon         = (HICON) NULL;        // wxSTD_FRAME_ICON;
 278     wndclass.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 279     wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 280     //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 281     wndclass.lpszMenuName  = NULL;
 282 #ifdef _MULTIPLE_INSTANCES
 283     sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 284 #endif
 285     wndclass.lpszClassName = wxFrameClassName;
 286
 287     if (!RegisterClass( &wndclass ))
 288     {
 289         // wxFatalError("Can't register Frame Window class");
 290     }
 291
 292     ///////////////////////////////////////////////////////////////////////
 293     // Register the MDI frame window class.
 294     WNDCLASS wndclass1;   // Structure used to register Windows class.
 295
 296     wndclass1.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 297     wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 298     wndclass1.cbClsExtra    = 0;
 299     wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 300     wndclass1.hInstance     = wxhInstance;
 301     wndclass1.hIcon         = (HICON) NULL; // wxSTD_MDIPARENTFRAME_ICON;
 302     wndclass1.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 303     //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 304     wndclass1.hbrBackground = (HBRUSH) NULL;
 305     wndclass1.lpszMenuName  = NULL;
 306
 307     wndclass1.lpszClassName = wxMDIFrameClassName;
 308     if (!RegisterClass( &wndclass1 ))
 309     {
 310         //    wxFatalError("Can't register MDI Frame window class");
 311         //  return FALSE;
 312     }
 313
 314     ///////////////////////////////////////////////////////////////////////
 315     // Register the MDI child frame window class.
 316     WNDCLASS wndclass4;   // Structure used to register Windows class.
 317
 318     wndclass4.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 319     wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 320     wndclass4.cbClsExtra    = 0;
 321     wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 322     wndclass4.hInstance     = wxhInstance;
 323     wndclass4.hIcon         = (HICON) NULL;       // wxSTD_MDICHILDFRAME_ICON;
 324     wndclass4.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 325     // TODO: perhaps this should be NULL so that Windows doesn't
 326     // paint the background itself (would OnEraseBackground duplicate
 327     // this?)
 328     wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 329     //  wndclass4.hbrBackground = NULL;
 330     wndclass4.lpszMenuName  = NULL;
 331     wndclass4.lpszClassName = wxMDIChildFrameClassName;
 332
 333     if (!RegisterClass( &wndclass4 ))
 334     {
 335         //   wxFatalError("Can't register MDI child frame window class");
 336         //   return FALSE;
 337     }
 338
 339     ///////////////////////////////////////////////////////////////////////
 340     // Register the panel window class.
 341     WNDCLASS wndclass2;   // Structure used to register Windows class.
 342     memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 343     wndclass2.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 344     wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 345     wndclass2.cbClsExtra    = 0;
 346     wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 347     wndclass2.hInstance     = wxhInstance;
 348     wndclass2.hIcon         = (HICON) NULL;
 349     wndclass2.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 350     //  wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ;
 351     wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 352     wndclass2.lpszMenuName  = NULL;
 353     wndclass2.lpszClassName = wxPanelClassName;
 354     if (!RegisterClass( &wndclass2 ))
 355     {
 356         //   wxFatalError("Can't register Panel Window class");
 357         //   return FALSE;
 358     }
 359
 360     ///////////////////////////////////////////////////////////////////////
 361     // Register the canvas and textsubwindow class name
 362     WNDCLASS wndclass3;   // Structure used to register Windows class.
 363     memset(&wndclass3, 0, sizeof(WNDCLASS));   // start with NULL defaults
 364     // Use CS_OWNDC to avoid messing about restoring the context
 365     // for every graphic operation.
 366     //  wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ;
 367     // wxWin 2.0
 368     wndclass3.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 369     wndclass3.lpfnWndProc   = (WNDPROC)wxWndProc;
 370     wndclass3.cbClsExtra    = 0;
 371     wndclass3.cbWndExtra    = sizeof( DWORD ); // was 4
 372     wndclass3.hInstance     = wxhInstance;
 373     wndclass3.hIcon         = (HICON) NULL;
 374     wndclass3.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 375     //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 376     wndclass3.hbrBackground = (HBRUSH) NULL;
 377     wndclass3.lpszMenuName  = NULL;
 378     wndclass3.lpszClassName = wxCanvasClassName;
 379     if (!RegisterClass( &wndclass3))
 380     {
 381         //   wxFatalError("Can't register Canvas class");
 382         //   return FALSE;
 383     }
 384
 385     return TRUE;
 386 }
 387
 388 //// Convert Windows to argc, argv style
 389
 390 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 391 {
 392     wxStringList args;
 393
 394     wxString cmdLine(lpCmdLine);
 395     int count = 0;
 396
 397     // Get application name
 398     char name[260]; // 260 is MAX_PATH value from windef.h
 399     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 400
 401     // GNUWIN32 already fills in the first arg with the application name.
 402     // JACS: apparently not now (b20 and above?)
 403 #if 0 // !defined(__GNUWIN32__)
 404     args.Add(name);
 405     count ++;
 406 #endif
 407
 408     strcpy(name, wxFileNameFromPath(name));
 409     wxStripExtension(name);
 410     wxTheApp->SetAppName(name);
 411
 412     // Break up string
 413     // Treat strings enclosed in double-quotes as single arguments
 414     int i = 0;
 415     int len = cmdLine.Length();
 416     while (i < len)
 417     {
 418         // Skip whitespace
 419         while ((i < len) && isspace(cmdLine.GetChar(i)))
 420             i ++;
 421
 422         if (i < len)
 423         {
 424             if (cmdLine.GetChar(i) == '"') // We found the start of a string
 425             {
 426                 i ++;
 427                 int first = i;
 428                 while ((i < len) && (cmdLine.GetChar(i) != '"'))
 429                     i ++;
 430
 431                 wxString arg(cmdLine.Mid(first, (i - first)));
 432
 433                 args.Add(arg);
 434                 count ++;
 435
 436                 if (i < len)
 437                     i ++; // Skip past 2nd quote
 438             }
 439             else // Unquoted argument
 440             {
 441                 int first = i;
 442                 while ((i < len) && !isspace(cmdLine.GetChar(i)))
 443                     i ++;
 444
 445                 wxString arg(cmdLine.Mid(first, (i - first)));
 446
 447                 args.Add(arg);
 448                 count ++;
 449             }
 450         }
 451     }
 452
 453     wxTheApp->argv = new char*[count + 1];
 454     for (i = 0; i < count; i++)
 455     {
 456         wxString arg(args[i]);
 457         wxTheApp->argv[i] = copystring((const char*)arg);
 458     }
 459     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 460     wxTheApp->argc = count;
 461 }
 462
 463 //// Cleans up any wxWindows internal structures left lying around
 464
 465 void wxApp::CleanUp()
 466 {
 467     //// COMMON CLEANUP
 468
 469     // flush the logged messages if any and install a 'safer' log target: the
 470     // default one (wxLogGui) can't be used after the resources are freed just
 471     // below and the user suppliedo ne might be even more unsafe (using any
 472     // wxWindows GUI function is unsafe starting from now)
 473     wxLog::DontCreateOnDemand();
 474
 475     // this will flush the old messages if any
 476     delete wxLog::SetActiveTarget(new wxLogStderr);
 477
 478     // One last chance for pending objects to be cleaned up
 479     wxTheApp->DeletePendingObjects();
 480
 481     wxModule::CleanUpModules();
 482
 483 #if wxUSE_WX_RESOURCES
 484     wxCleanUpResourceSystem();
 485
 486     //  wxDefaultResourceTable->ClearTable();
 487 #endif
 488
 489     // Indicate that the cursor can be freed, so that cursor won't be deleted
 490     // by deleting the bitmap list before g_globalCursor goes out of scope
 491     // (double deletion of the cursor).
 492     wxSetCursor(wxNullCursor);
 493     delete g_globalCursor;
 494     g_globalCursor = NULL;
 495
 496     wxDeleteStockObjects() ;
 497
 498     // Destroy all GDI lists, etc.
 499     wxDeleteStockLists();
 500
 501     delete wxTheColourDatabase;
 502     wxTheColourDatabase = NULL;
 503
 504     wxBitmap::CleanUpHandlers();
 505
 506     delete[] wxBuffer;
 507     wxBuffer = NULL;
 508
 509     //// WINDOWS-SPECIFIC CLEANUP
 510
 511     wxSetKeyboardHook(FALSE);
 512
 513 #ifdef __WIN95__
 514
 515 #if wxUSE_RICHEDIT
 516     if (gs_hRichEdit != (HINSTANCE) NULL)
 517         FreeLibrary(gs_hRichEdit);
 518 #endif
 519
 520 #endif
 521
 522 #if wxUSE_PENWINDOWS
 523     wxCleanUpPenWin();
 524 #endif
 525
 526     if (wxSTD_FRAME_ICON)
 527         DestroyIcon(wxSTD_FRAME_ICON);
 528     if (wxSTD_MDICHILDFRAME_ICON)
 529         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 530     if (wxSTD_MDIPARENTFRAME_ICON)
 531         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 532
 533     if (wxDEFAULT_FRAME_ICON)
 534         DestroyIcon(wxDEFAULT_FRAME_ICON);
 535     if (wxDEFAULT_MDICHILDFRAME_ICON)
 536         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 537     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 538         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 539
 540     if ( wxDisableButtonBrush )
 541         ::DeleteObject( wxDisableButtonBrush ) ;
 542
 543 #if wxUSE_OLE
 544     ::OleUninitialize();
 545 #endif
 546
 547 #if wxUSE_CTL3D
 548     Ctl3dUnregister(wxhInstance);
 549 #endif
 550
 551     if (wxWinHandleList)
 552         delete wxWinHandleList ;
 553
 554     wxClassInfo::CleanUpClasses();
 555
 556     delete wxTheApp;
 557     wxTheApp = NULL;
 558
 559 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 560     // At this point we want to check if there are any memory
 561     // blocks that aren't part of the wxDebugContext itself,
 562     // as a special case. Then when dumping we need to ignore
 563     // wxDebugContext, too.
 564     if (wxDebugContext::CountObjectsLeft() > 0)
 565     {
 566         wxLogDebug("There were memory leaks.");
 567         wxDebugContext::Dump();
 568         wxDebugContext::PrintStatistics();
 569     }
 570     //  wxDebugContext::SetStream(NULL, NULL);
 571 #endif
 572
 573     // do it as the very last thing because everything else can log messages
 574     delete wxLog::SetActiveTarget(NULL);
 575 }
 576
 577 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 578
 579 // temporarily disable this warning which would be generated in release builds
 580 // because of __try
 581 #ifdef __VISUALC__
 582     #pragma warning(disable: 4715) // not all control paths return a value
 583 #endif // Visual C++
 584
 585 //// Main wxWindows entry point
 586 int wxEntry(WXHINSTANCE hInstance,
 587             WXHINSTANCE WXUNUSED(hPrevInstance),
 588             char *lpCmdLine,
 589             int nCmdShow,
 590             bool enterLoop)
 591 {
 592     // do check for memory leaks on program exit
 593     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 594     //  deallocated memory which may be used to simulate low-memory condition)
 595     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 596
 597     // take everything into a try-except block in release build
 598     // FIXME other compilers must support Win32 SEH (structured exception
 599     //       handling) too, just find the appropriate keyword in their docs!
 600     //       Please note that it's _not_ the same as C++ exceptions!
 601 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 602     #define CATCH_PROGRAM_EXCEPTIONS
 603
 604     __try {
 605 #else
 606     #undef  CATCH_PROGRAM_EXCEPTIONS
 607 #endif
 608
 609         wxhInstance = (HINSTANCE) hInstance;
 610
 611         if (!wxApp::Initialize())
 612             return 0;
 613
 614         // create the application object or ensure that one already exists
 615         if (!wxTheApp)
 616         {
 617             // The app may have declared a global application object, but we recommend
 618             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 619             // function for delayed, dynamic app object construction.
 620             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 621                          "No initializer - use IMPLEMENT_APP macro." );
 622
 623             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 624         }
 625
 626         wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 627
 628         // save the WinMain() parameters
 629         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 630         wxTheApp->m_nCmdShow = nCmdShow;
 631
 632         // GUI-specific initialisation. In fact on Windows we don't have any,
 633         // but this call is provided for compatibility across platforms.
 634         wxTheApp->OnInitGui() ;
 635
 636         int retValue = 0;
 637
 638         if ( wxTheApp->OnInit() )
 639         {
 640             if ( enterLoop )
 641             {
 642                 retValue = wxTheApp->OnRun();
 643             }
 644             else
 645                 // We want to initialize, but not run or exit immediately.
 646                 return 1;
 647         }
 648         //else: app initialization failed, so we skipped OnRun()
 649
 650         wxWindow *topWindow = wxTheApp->GetTopWindow();
 651         if ( topWindow )
 652         {
 653             // Forcibly delete the window.
 654             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 655                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 656             {
 657                 topWindow->Close(TRUE);
 658                 wxTheApp->DeletePendingObjects();
 659             }
 660             else
 661             {
 662                 delete topWindow;
 663                 wxTheApp->SetTopWindow(NULL);
 664             }
 665         }
 666
 667         wxTheApp->OnExit();
 668
 669         wxApp::CleanUp();
 670
 671         return retValue;
 672
 673 #ifdef CATCH_PROGRAM_EXCEPTIONS
 674     }
 675     __except ( EXCEPTION_EXECUTE_HANDLER ) {
 676         /*
 677            if ( wxTheApp )
 678            wxTheApp->OnFatalException();
 679          */
 680
 681         // using wxLog would be unsafe here
 682         ::MessageBox(NULL,
 683                      _("Unrecoverable program error detected: "
 684                      " the application will terminate."),
 685                      _("Fatal Error"),
 686                      MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 687
 688         ::ExitProcess(3); // the same exit code as abort()
 689
 690         // NOTREACHED
 691     }
 692 #endif // CATCH_PROGRAM_EXCEPTIONS
 693 }
 694
 695 // restore warning state
 696 #ifdef __VISUALC__
 697     #pragma warning(default: 4715) // not all control paths return a value
 698 #endif // Visual C++
 699
 700 #else /*  _WINDLL  */
 701
 702 //// Entry point for DLLs
 703
 704 int wxEntry(WXHINSTANCE hInstance)
 705 {
 706     wxhInstance = (HINSTANCE) hInstance;
 707     wxApp::Initialize();
 708
 709     // The app may have declared a global application object, but we recommend
 710     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 711     // for delayed, dynamic app object construction.
 712     if (!wxTheApp)
 713     {
 714         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 715                      "No initializer - use IMPLEMENT_APP macro." );
 716
 717         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 718     }
 719
 720     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 721
 722     wxTheApp->argc = 0;
 723     wxTheApp->argv = NULL;
 724
 725     wxTheApp->OnInitGui();
 726
 727     wxTheApp->OnInit();
 728
 729     wxWindow *topWindow = wxTheApp->GetTopWindow();
 730     if ( topWindow && topWindow->GetHWND())
 731     {
 732         topWindow->Show(TRUE);
 733     }
 734
 735     return 1;
 736 }
 737 #endif // _WINDLL
 738
 739 //// Static member initialization
 740
 741 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 742
 743 wxApp::wxApp()
 744 {
 745     m_topWindow = NULL;
 746     wxTheApp = this;
 747     m_className = "";
 748     m_wantDebugOutput = TRUE ;
 749     m_appName = "";
 750     argc = 0;
 751     argv = NULL;
 752 #ifdef __WXMSW__
 753     m_printMode = wxPRINT_WINDOWS;
 754 #else
 755     m_printMode = wxPRINT_POSTSCRIPT;
 756 #endif
 757     m_exitOnFrameDelete = TRUE;
 758     m_auto3D = TRUE;
 759 }
 760
 761 wxApp::~wxApp()
 762 {
 763     // Delete command-line args
 764     int i;
 765     for (i = 0; i < argc; i++)
 766     {
 767         delete[] argv[i];
 768     }
 769     delete[] argv;
 770 }
 771
 772 bool wxApp::Initialized()
 773 {
 774 #ifndef _WINDLL
 775     if (GetTopWindow())
 776         return TRUE;
 777     else
 778         return FALSE;
 779 #endif
 780 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 781     return TRUE;
 782 #endif
 783 }
 784
 785 /*
 786  * Get and process a message, returning FALSE if WM_QUIT
 787  * received (and also set the flag telling the app to exit the main loop)
 788  *
 789  */
 790 bool wxApp::DoMessage()
 791 {
 792     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 793     if ( rc == 0 )
 794     {
 795         // got WM_QUIT
 796         m_keepGoing = FALSE;
 797
 798         return FALSE;
 799     }
 800     else if ( rc == -1 )
 801     {
 802         // should never happen, but let's test for it nevertheless
 803         wxLogLastError("GetMessage");
 804     }
 805     else
 806     {
 807 #if wxUSE_THREADS
 808         wxASSERT_MSG( wxThread::IsMain(),
 809                       "only the main thread can process Windows messages" );
 810
 811         static bool s_hadGuiLock = TRUE;
 812         static wxMsgArray s_aSavedMessages;
 813
 814         // if a secondary thread owns is doing GUI calls, save all messages for
 815         // later processing - we can't process them right now because it will
 816         // lead to recursive library calls (and we're not reentrant)
 817         if ( !wxGuiOwnedByMainThread() )
 818         {
 819             s_hadGuiLock = FALSE;
 820
 821             // leave out WM_COMMAND messages: too dangerous, sometimes
 822             // the message will be processed twice
 823             if ( !wxIsWaitingForThread() ||
 824                     s_currentMsg.message != WM_COMMAND )
 825             {
 826                 s_aSavedMessages.Add(s_currentMsg);
 827             }
 828
 829             return TRUE;
 830         }
 831         else
 832         {
 833             // have we just regained the GUI lock? if so, post all of the saved
 834             // messages
 835             //
 836             // FIXME of course, it's not _exactly_ the same as processing the
 837             //       messages normally - expect some things to break...
 838             if ( !s_hadGuiLock )
 839             {
 840                 s_hadGuiLock = TRUE;
 841
 842                 size_t count = s_aSavedMessages.Count();
 843                 for ( size_t n = 0; n < count; n++ )
 844                 {
 845                     MSG& msg = s_aSavedMessages[n];
 846
 847                     if ( !ProcessMessage((WXMSG *)&msg) )
 848                     {
 849                         ::TranslateMessage(&msg);
 850                         ::DispatchMessage(&msg);
 851                     }
 852                 }
 853
 854                 s_aSavedMessages.Empty();
 855             }
 856         }
 857 #endif // wxUSE_THREADS
 858
 859         // Process the message
 860         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 861         {
 862             ::TranslateMessage(&s_currentMsg);
 863             wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */
 864             ::DispatchMessage(&s_currentMsg);
 865         }
 866     }
 867
 868     return TRUE;
 869 }
 870
 871 /*
 872  * Keep trying to process messages until WM_QUIT
 873  * received.
 874  *
 875  * If there are messages to be processed, they will all be
 876  * processed and OnIdle will not be called.
 877  * When there are no more messages, OnIdle is called.
 878  * If OnIdle requests more time,
 879  * it will be repeatedly called so long as there are no pending messages.
 880  * A 'feature' of this is that once OnIdle has decided that no more processing
 881  * is required, then it won't get processing time until further messages
 882  * are processed (it'll sit in DoMessage).
 883  */
 884
 885 int wxApp::MainLoop()
 886 {
 887     m_keepGoing = TRUE;
 888
 889     while ( m_keepGoing )
 890     {
 891 #if wxUSE_THREADS
 892         wxMutexGuiLeaveOrEnter();
 893 #endif // wxUSE_THREADS
 894
 895         while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 896                 ProcessIdle() )
 897         {
 898         }
 899
 900         DoMessage();
 901     }
 902
 903     return s_currentMsg.wParam;
 904 }
 905
 906 // Returns TRUE if more time is needed.
 907 bool wxApp::ProcessIdle()
 908 {
 909     wxIdleEvent event;
 910     event.SetEventObject(this);
 911     ProcessEvent(event);
 912
 913     return event.MoreRequested();
 914 }
 915
 916 void wxApp::ExitMainLoop()
 917 {
 918     m_keepGoing = FALSE;
 919 }
 920
 921 bool wxApp::Pending()
 922 {
 923     return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 924 }
 925
 926 void wxApp::Dispatch()
 927 {
 928     DoMessage();
 929 }
 930
 931 /*
 932  * Give all windows a chance to preprocess
 933  * the message. Some may have accelerator tables, or have
 934  * MDI complications.
 935  */
 936
 937 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 938 {
 939     MSG *msg = (MSG *)wxmsg;
 940     HWND hWnd = msg->hwnd;
 941     wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
 942
 943     // Try translations first; find the youngest window with
 944     // a translation table.
 945     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 946     {
 947         if ( wnd->MSWTranslateMessage(wxmsg) )
 948             return TRUE;
 949     }
 950
 951     // Anyone for a non-translation message? Try youngest descendants first.
 952     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 953     {
 954         if ( wnd->MSWProcessMessage(wxmsg) )
 955             return TRUE;
 956     }
 957
 958     return FALSE;
 959 }
 960
 961 void wxApp::OnIdle(wxIdleEvent& event)
 962 {
 963     static bool s_inOnIdle = FALSE;
 964
 965     // Avoid recursion (via ProcessEvent default case)
 966     if ( s_inOnIdle )
 967         return;
 968
 969     s_inOnIdle = TRUE;
 970
 971     // 'Garbage' collection of windows deleted with Close().
 972     DeletePendingObjects();
 973
 974     // flush the logged messages if any
 975     wxLog *pLog = wxLog::GetActiveTarget();
 976     if ( pLog != NULL && pLog->HasPendingMessages() )
 977         pLog->Flush();
 978
 979     // Send OnIdle events to all windows
 980     if ( SendIdleEvents() )
 981     {
 982         // SendIdleEvents() returns TRUE if at least one window requested more
 983         // idle events
 984         event.RequestMore(TRUE);
 985     }
 986
 987     s_inOnIdle = FALSE;
 988 }
 989
 990 // Send idle event to all top-level windows
 991 bool wxApp::SendIdleEvents()
 992 {
 993     bool needMore = FALSE;
 994     wxNode* node = wxTopLevelWindows.First();
 995     while (node)
 996     {
 997         wxWindow* win = (wxWindow*) node->Data();
 998         if (SendIdleEvents(win))
 999             needMore = TRUE;
1000
1001         node = node->Next();
1002     }
1003
1004     return needMore;
1005 }
1006
1007 // Send idle event to window and all subwindows
1008 bool wxApp::SendIdleEvents(wxWindow* win)
1009 {
1010     bool needMore = FALSE;
1011
1012     wxIdleEvent event;
1013     event.SetEventObject(win);
1014     win->GetEventHandler()->ProcessEvent(event);
1015
1016     if (event.MoreRequested())
1017         needMore = TRUE;
1018
1019     wxNode* node = win->GetChildren().First();
1020     while (node)
1021     {
1022         wxWindow* win = (wxWindow*) node->Data();
1023         if (SendIdleEvents(win))
1024             needMore = TRUE;
1025
1026         node = node->Next();
1027     }
1028     return needMore ;
1029 }
1030
1031 void wxApp::DeletePendingObjects()
1032 {
1033     wxNode *node = wxPendingDelete.First();
1034     while (node)
1035     {
1036         wxObject *obj = (wxObject *)node->Data();
1037
1038         delete obj;
1039
1040         if (wxPendingDelete.Member(obj))
1041             delete node;
1042
1043         // Deleting one object may have deleted other pending
1044         // objects, so start from beginning of list again.
1045         node = wxPendingDelete.First();
1046     }
1047 }
1048
1049 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1050 {
1051     if (GetTopWindow())
1052         GetTopWindow()->Close(TRUE);
1053 }
1054
1055 // Default behaviour: close the application with prompts. The
1056 // user can veto the close, and therefore the end session.
1057 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1058 {
1059     if (GetTopWindow())
1060     {
1061         if (!GetTopWindow()->Close(!event.CanVeto()))
1062             event.Veto(TRUE);
1063     }
1064 }
1065
1066 wxLog* wxApp::CreateLogTarget()
1067 {
1068     return new wxLogGui;
1069 }
1070
1071 wxWindow* wxApp::GetTopWindow() const
1072 {
1073     if (m_topWindow)
1074         return m_topWindow;
1075     else if (wxTopLevelWindows.Number() > 0)
1076         return (wxWindow*) wxTopLevelWindows.First()->Data();
1077     else
1078         return NULL;
1079 }
1080
1081 int wxApp::GetComCtl32Version() const
1082 {
1083     // have we loaded COMCTL32 yet?
1084     HMODULE theModule = ::GetModuleHandle("COMCTL32");
1085     int version = 0;
1086
1087     // if so, then we can check for the version
1088     if (theModule)
1089     {
1090         // InitCommonControlsEx is unique to 4.7 and later
1091         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1092
1093         if (! theProc)
1094         {                    // not found, must be 4.00
1095             version = 400;
1096         }
1097         else
1098         {
1099             // The following symbol are unique to 4.71
1100             //   DllInstall
1101             //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1102             //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1103             //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1104             //   FlatSB_ShowScrollBar
1105             //   _DrawIndirectImageList _DuplicateImageList
1106             //   InitializeFlatSB
1107             //   UninitializeFlatSB
1108             // we could check for any of these - I chose DllInstall
1109             FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1110             if (! theProc)
1111             {
1112                 // not found, must be 4.70
1113                 version = 470;
1114             }
1115             else
1116             {                         // found, must be 4.71
1117                 version = 471;
1118             }
1119         }
1120     }
1121     return version;
1122 }
1123
1124 void wxExit()
1125 {
1126     wxLogError(_("Fatal error: exiting"));
1127
1128     wxApp::CleanUp();
1129 }
1130
1131 // Yield to incoming messages
1132 bool wxYield()
1133 {
1134     MSG msg;
1135     // We want to go back to the main message loop
1136     // if we see a WM_QUIT. (?)
1137     while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1138     {
1139         if ( !wxTheApp->DoMessage() )
1140             break;
1141     }
1142
1143     return TRUE;
1144 }
1145
1146 HINSTANCE wxGetInstance()
1147 {
1148     return wxhInstance;
1149 }
1150
1151 void wxSetInstance(HINSTANCE hInst)
1152 {
1153     wxhInstance = hInst;
1154 }
1155
1156 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1157 // if in a separate file. So include it here to ensure it's linked.
1158 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1159 #include "main.cpp"
1160 #endif