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 #if wxUSE_THREADS
  96 extern wxList wxPendingEvents;
  97 extern wxCriticalSection wxPendingEventsLocker;
  98 #endif
  99 extern void wxSetKeyboardHook(bool doIt);
 100 extern wxCursor *g_globalCursor;
 101
 102 HINSTANCE wxhInstance = 0;
 103 static MSG s_currentMsg;
 104 wxApp *wxTheApp = NULL;
 105
 106 // FIXME why not const? and not static?
 107 char wxFrameClassName[]         = "wxFrameClass";
 108 char wxMDIFrameClassName[]      = "wxMDIFrameClass";
 109 char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass";
 110 char wxPanelClassName[]         = "wxPanelClass";
 111 char wxCanvasClassName[]        = "wxCanvasClass";
 112
 113 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 114 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 115 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 116
 117 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 118 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 119 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 120
 121 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 122
 123 LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 124
 125 #if defined(__WIN95__) && !defined(__TWIN32__)
 126     #define wxUSE_RICHEDIT 1
 127 #else
 128     #define wxUSE_RICHEDIT 0
 129 #endif
 130
 131 #if wxUSE_RICHEDIT
 132     static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
 133 #endif
 134
 135 // ===========================================================================
 136 // implementation
 137 // ===========================================================================
 138
 139 // ---------------------------------------------------------------------------
 140 // wxApp
 141 // ---------------------------------------------------------------------------
 142
 143 #if !USE_SHARED_LIBRARY
 144     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 145
 146     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 147         EVT_IDLE(wxApp::OnIdle)
 148         EVT_END_SESSION(wxApp::OnEndSession)
 149         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 150     END_EVENT_TABLE()
 151 #endif
 152
 153 long wxApp::sm_lastMessageTime = 0;
 154
 155 //// Initialize
 156 bool wxApp::Initialize()
 157 {
 158     // Some people may wish to use this, but
 159     // probably it shouldn't be here by default.
 160 #ifdef __WXDEBUG__
 161     //    wxRedirectIOToConsole();
 162 #endif
 163
 164     wxBuffer = new char[1500]; // FIXME
 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
 187 #if wxUSE_RICHEDIT
 188     gs_hRichEdit = LoadLibrary("RICHED32.DLL");
 189
 190     if (gs_hRichEdit == (HINSTANCE) NULL)
 191     {
 192         wxLogError(_("Could not initialise Rich Edit DLL"));
 193     }
 194 #endif // wxUSE_RICHEDIT
 195
 196 #endif // __WIN95__
 197
 198     // for OLE, enlarge message queue to be as large as possible
 199     int iMsg = 96;
 200     while (!SetMessageQueue(iMsg) && (iMsg -= 8));
 201
 202     /*
 203        DWORD dwOleVer;
 204        dwOleVer = CoBuildVersion();
 205
 206     // check the OLE library version
 207     if (rmm != HIWORD(dwOleVer))
 208     {
 209     wxMessageBox("Incorrect version of OLE libraries.");
 210     return FALSE;
 211     }
 212      */
 213
 214 #if wxUSE_OLE
 215     // we need to initialize OLE library
 216     if ( FAILED(::OleInitialize(NULL)) )
 217         wxLogError(_("Cannot initialize OLE"));
 218 #endif
 219
 220 #if wxUSE_CTL3D
 221     if (!Ctl3dRegister(wxhInstance))
 222         wxLogError("Cannot register CTL3D");
 223
 224     Ctl3dAutoSubclass(wxhInstance);
 225 #endif
 226
 227     g_globalCursor = new wxCursor;
 228
 229     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME");
 230     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME");
 231     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME");
 232
 233     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME");
 234     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME");
 235     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME");
 236
 237     RegisterWindowClasses();
 238
 239     // Create the brush for disabling bitmap buttons
 240
 241     LOGBRUSH lb ;
 242     lb.lbStyle = BS_PATTERN;
 243     lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ;
 244     wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ;
 245     ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ;
 246
 247 #if wxUSE_PENWINDOWS
 248     wxRegisterPenWin();
 249 #endif
 250
 251     wxWinHandleList = new wxList(wxKEY_INTEGER);
 252
 253     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 254     // PLEASE DO NOT ALTER THIS.
 255 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 256     extern char wxDummyChar;
 257     if (wxDummyChar) wxDummyChar++;
 258 #endif
 259
 260     wxSetKeyboardHook(TRUE);
 261
 262     wxModule::RegisterModules();
 263     if (!wxModule::InitializeModules())
 264         return FALSE;
 265     return TRUE;
 266 }
 267
 268 //// RegisterWindowClasses
 269
 270 bool wxApp::RegisterWindowClasses()
 271 {
 272     ///////////////////////////////////////////////////////////////////////
 273     // Register the frame window class.
 274     WNDCLASS wndclass;   // Structure used to register Windows class.
 275
 276     wndclass.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 277     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 278     wndclass.cbClsExtra    = 0;
 279     wndclass.cbWndExtra    = sizeof( DWORD ); // was 4
 280     wndclass.hInstance     = wxhInstance;
 281     wndclass.hIcon         = (HICON) NULL;        // wxSTD_FRAME_ICON;
 282     wndclass.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 283     wndclass.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 284     //  wndclass.hbrBackground = GetStockObject( WHITE_BRUSH );
 285     wndclass.lpszMenuName  = NULL;
 286 #ifdef _MULTIPLE_INSTANCES
 287     sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance );
 288 #endif
 289     wndclass.lpszClassName = wxFrameClassName;
 290
 291     if (!RegisterClass( &wndclass ))
 292     {
 293         // wxFatalError("Can't register Frame Window class");
 294     }
 295
 296     ///////////////////////////////////////////////////////////////////////
 297     // Register the MDI frame window class.
 298     WNDCLASS wndclass1;   // Structure used to register Windows class.
 299
 300     wndclass1.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 301     wndclass1.lpfnWndProc   = (WNDPROC)wxWndProc;
 302     wndclass1.cbClsExtra    = 0;
 303     wndclass1.cbWndExtra    = sizeof( DWORD ); // was 4
 304     wndclass1.hInstance     = wxhInstance;
 305     wndclass1.hIcon         = (HICON) NULL; // wxSTD_MDIPARENTFRAME_ICON;
 306     wndclass1.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 307     //  wndclass1.hbrBackground =  (HBRUSH)(COLOR_APPWORKSPACE+1) ;
 308     wndclass1.hbrBackground = (HBRUSH) NULL;
 309     wndclass1.lpszMenuName  = NULL;
 310
 311     wndclass1.lpszClassName = wxMDIFrameClassName;
 312     if (!RegisterClass( &wndclass1 ))
 313     {
 314         //    wxFatalError("Can't register MDI Frame window class");
 315         //  return FALSE;
 316     }
 317
 318     ///////////////////////////////////////////////////////////////////////
 319     // Register the MDI child frame window class.
 320     WNDCLASS wndclass4;   // Structure used to register Windows class.
 321
 322     wndclass4.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 323     wndclass4.lpfnWndProc   = (WNDPROC)wxWndProc;
 324     wndclass4.cbClsExtra    = 0;
 325     wndclass4.cbWndExtra    = sizeof( DWORD ); // was 4
 326     wndclass4.hInstance     = wxhInstance;
 327     wndclass4.hIcon         = (HICON) NULL;       // wxSTD_MDICHILDFRAME_ICON;
 328     wndclass4.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 329     // TODO: perhaps this should be NULL so that Windows doesn't
 330     // paint the background itself (would OnEraseBackground duplicate
 331     // this?)
 332     wndclass4.hbrBackground =  (HBRUSH)(COLOR_WINDOW+1) ;
 333     //  wndclass4.hbrBackground = NULL;
 334     wndclass4.lpszMenuName  = NULL;
 335     wndclass4.lpszClassName = wxMDIChildFrameClassName;
 336
 337     if (!RegisterClass( &wndclass4 ))
 338     {
 339         //   wxFatalError("Can't register MDI child frame window class");
 340         //   return FALSE;
 341     }
 342
 343     ///////////////////////////////////////////////////////////////////////
 344     // Register the panel window class.
 345     WNDCLASS wndclass2;   // Structure used to register Windows class.
 346     memset(&wndclass2, 0, sizeof(WNDCLASS));   // start with NULL defaults
 347     wndclass2.style         = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ;
 348     wndclass2.lpfnWndProc   = (WNDPROC)wxWndProc;
 349     wndclass2.cbClsExtra    = 0;
 350     wndclass2.cbWndExtra    = sizeof( DWORD ); // was 4
 351     wndclass2.hInstance     = wxhInstance;
 352     wndclass2.hIcon         = (HICON) NULL;
 353     wndclass2.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 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         = (HICON) NULL;
 378     wndclass3.hCursor       = LoadCursor( (HINSTANCE) NULL, IDC_ARROW );
 379     //  wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ;
 380     wndclass3.hbrBackground = (HBRUSH) 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     args.Add(name);
 406     count++;
 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(TRUE) > 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
 901         DoMessage();
 902
 903         // If they are pending events, we must process them.
 904 #if wxUSE_THREADS
 905         ProcessPendingEvents();
 906 #endif
 907     }
 908
 909     return s_currentMsg.wParam;
 910 }
 911
 912 // Returns TRUE if more time is needed.
 913 bool wxApp::ProcessIdle()
 914 {
 915     wxIdleEvent event;
 916     event.SetEventObject(this);
 917     ProcessEvent(event);
 918
 919     return event.MoreRequested();
 920 }
 921
 922 #if wxUSE_THREADS
 923 void wxApp::ProcessPendingEvents()
 924 {
 925     wxNode *node = wxPendingEvents.First();
 926     wxCriticalSectionLocker locker(wxPendingEventsLocker);
 927
 928     while (node)
 929     {
 930         wxEvtHandler *handler = (wxEvtHandler *)node->Data();
 931
 932         handler->ProcessPendingEvents();
 933
 934         delete node;
 935         node = wxPendingEvents.First();
 936     }
 937 }
 938 #endif
 939
 940
 941 void wxApp::ExitMainLoop()
 942 {
 943     m_keepGoing = FALSE;
 944 }
 945
 946 bool wxApp::Pending()
 947 {
 948     return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ;
 949 }
 950
 951 void wxApp::Dispatch()
 952 {
 953     DoMessage();
 954 }
 955
 956 /*
 957  * Give all windows a chance to preprocess
 958  * the message. Some may have accelerator tables, or have
 959  * MDI complications.
 960  */
 961
 962 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 963 {
 964     MSG *msg = (MSG *)wxmsg;
 965     HWND hWnd = msg->hwnd;
 966     wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
 967
 968     // Try translations first; find the youngest window with
 969     // a translation table.
 970     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 971     {
 972         if ( wnd->MSWTranslateMessage(wxmsg) )
 973             return TRUE;
 974     }
 975
 976     // Anyone for a non-translation message? Try youngest descendants first.
 977     for ( wnd = wndThis; wnd; wnd = wnd->GetParent() )
 978     {
 979         if ( wnd->MSWProcessMessage(wxmsg) )
 980             return TRUE;
 981     }
 982
 983     return FALSE;
 984 }
 985
 986 void wxApp::OnIdle(wxIdleEvent& event)
 987 {
 988     static bool s_inOnIdle = FALSE;
 989
 990     // Avoid recursion (via ProcessEvent default case)
 991     if ( s_inOnIdle )
 992         return;
 993
 994     s_inOnIdle = TRUE;
 995
 996     // 'Garbage' collection of windows deleted with Close().
 997     DeletePendingObjects();
 998
 999     // flush the logged messages if any
1000     wxLog *pLog = wxLog::GetActiveTarget();
1001     if ( pLog != NULL && pLog->HasPendingMessages() )
1002         pLog->Flush();
1003
1004     // Send OnIdle events to all windows
1005     if ( SendIdleEvents() )
1006     {
1007         // SendIdleEvents() returns TRUE if at least one window requested more
1008         // idle events
1009         event.RequestMore(TRUE);
1010     }
1011
1012     s_inOnIdle = FALSE;
1013 }
1014
1015 // Send idle event to all top-level windows
1016 bool wxApp::SendIdleEvents()
1017 {
1018     bool needMore = FALSE;
1019     wxNode* node = wxTopLevelWindows.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
1029     return needMore;
1030 }
1031
1032 // Send idle event to window and all subwindows
1033 bool wxApp::SendIdleEvents(wxWindow* win)
1034 {
1035     bool needMore = FALSE;
1036
1037     wxIdleEvent event;
1038     event.SetEventObject(win);
1039     win->GetEventHandler()->ProcessEvent(event);
1040
1041     if (event.MoreRequested())
1042         needMore = TRUE;
1043
1044     wxNode* node = win->GetChildren().First();
1045     while (node)
1046     {
1047         wxWindow* win = (wxWindow*) node->Data();
1048         if (SendIdleEvents(win))
1049             needMore = TRUE;
1050
1051         node = node->Next();
1052     }
1053     return needMore ;
1054 }
1055
1056 void wxApp::DeletePendingObjects()
1057 {
1058     wxNode *node = wxPendingDelete.First();
1059     while (node)
1060     {
1061         wxObject *obj = (wxObject *)node->Data();
1062
1063         delete obj;
1064
1065         if (wxPendingDelete.Member(obj))
1066             delete node;
1067
1068         // Deleting one object may have deleted other pending
1069         // objects, so start from beginning of list again.
1070         node = wxPendingDelete.First();
1071     }
1072 }
1073
1074 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1075 {
1076     if (GetTopWindow())
1077         GetTopWindow()->Close(TRUE);
1078 }
1079
1080 // Default behaviour: close the application with prompts. The
1081 // user can veto the close, and therefore the end session.
1082 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1083 {
1084     if (GetTopWindow())
1085     {
1086         if (!GetTopWindow()->Close(!event.CanVeto()))
1087             event.Veto(TRUE);
1088     }
1089 }
1090
1091 wxLog* wxApp::CreateLogTarget()
1092 {
1093     return new wxLogGui;
1094 }
1095
1096 wxWindow* wxApp::GetTopWindow() const
1097 {
1098     if (m_topWindow)
1099         return m_topWindow;
1100     else if (wxTopLevelWindows.Number() > 0)
1101         return (wxWindow*) wxTopLevelWindows.First()->Data();
1102     else
1103         return NULL;
1104 }
1105
1106 int wxApp::GetComCtl32Version() const
1107 {
1108     // have we loaded COMCTL32 yet?
1109     HMODULE theModule = ::GetModuleHandle("COMCTL32");
1110     int version = 0;
1111
1112     // if so, then we can check for the version
1113     if (theModule)
1114     {
1115         // InitCommonControlsEx is unique to 4.7 and later
1116         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1117
1118         if (! theProc)
1119         {                    // not found, must be 4.00
1120             version = 400;
1121         }
1122         else
1123         {
1124             // The following symbol are unique to 4.71
1125             //   DllInstall
1126             //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1127             //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1128             //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1129             //   FlatSB_ShowScrollBar
1130             //   _DrawIndirectImageList _DuplicateImageList
1131             //   InitializeFlatSB
1132             //   UninitializeFlatSB
1133             // we could check for any of these - I chose DllInstall
1134             FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1135             if (! theProc)
1136             {
1137                 // not found, must be 4.70
1138                 version = 470;
1139             }
1140             else
1141             {                         // found, must be 4.71
1142                 version = 471;
1143             }
1144         }
1145     }
1146     return version;
1147 }
1148
1149 void wxExit()
1150 {
1151     wxLogError(_("Fatal error: exiting"));
1152
1153     wxApp::CleanUp();
1154 }
1155
1156 // Yield to incoming messages
1157 bool wxYield()
1158 {
1159     MSG msg;
1160     // We want to go back to the main message loop
1161     // if we see a WM_QUIT. (?)
1162     while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
1163     {
1164         if ( !wxTheApp->DoMessage() )
1165             break;
1166     }
1167
1168     return TRUE;
1169 }
1170
1171 HINSTANCE wxGetInstance()
1172 {
1173     return wxhInstance;
1174 }
1175
1176 void wxSetInstance(HINSTANCE hInst)
1177 {
1178     wxhInstance = hInst;
1179 }
1180
1181 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1182 // if in a separate file. So include it here to ensure it's linked.
1183 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1184 #include "main.cpp"
1185 #endif