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     #include "wx/wxchar.h"
  47     #include "wx/icon.h"
  48 #endif
  49
  50 #include "wx/log.h"
  51 #include "wx/module.h"
  52
  53 #include "wx/msw/private.h"
  54
  55 #if wxUSE_THREADS
  56     #include "wx/thread.h"
  57
  58     // define the array of MSG strutures
  59     WX_DECLARE_OBJARRAY(MSG, wxMsgArray);
  60
  61     #include "wx/arrimpl.cpp"
  62
  63     WX_DEFINE_OBJARRAY(wxMsgArray);
  64 #endif // wxUSE_THREADS
  65
  66 #if wxUSE_WX_RESOURCES
  67     #include "wx/resource.h"
  68 #endif
  69
  70 // OLE is used for drag-and-drop, clipboard, OLE Automation...
  71 #ifndef wxUSE_NORLANDER_HEADERS
  72 #if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__)
  73     #undef wxUSE_OLE
  74
  75     #define  wxUSE_OLE 0
  76 #endif // broken compilers
  77 #endif
  78
  79 #if wxUSE_OLE
  80     #include <ole2.h>
  81 #endif
  82
  83 #include <string.h>
  84 #include <ctype.h>
  85
  86 #if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) || defined(wxUSE_NORLANDER_HEADERS)
  87     #include <commctrl.h>
  88 #endif
  89
  90 #include "wx/msw/msvcrt.h"
  91
  92 // ---------------------------------------------------------------------------
  93 // global variables
  94 // ---------------------------------------------------------------------------
  95
  96 extern wxChar *wxBuffer;
  97 extern wxChar *wxOsVersion;
  98 extern wxList *wxWinHandleList;
  99 extern wxList WXDLLEXPORT wxPendingDelete;
 100 extern void wxSetKeyboardHook(bool doIt);
 101 extern wxCursor *g_globalCursor;
 102
 103 HINSTANCE wxhInstance = 0;
 104 MSG s_currentMsg;
 105 wxApp *wxTheApp = NULL;
 106
 107 // FIXME why not const? and not static?
 108
 109 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 110 //     with NR suffix - wxWindow::MSWCreate() supposes this
 111 wxChar wxFrameClassName[]         = wxT("wxFrameClass");
 112 wxChar wxFrameClassNameNoRedraw[] = wxT("wxFrameClassNR");
 113 wxChar wxMDIFrameClassName[]      = wxT("wxMDIFrameClass");
 114 wxChar wxMDIFrameClassNameNoRedraw[] = wxT("wxMDIFrameClassNR");
 115 wxChar wxMDIChildFrameClassName[] = wxT("wxMDIChildFrameClass");
 116 wxChar wxMDIChildFrameClassNameNoRedraw[] = wxT("wxMDIChildFrameClassNR");
 117 wxChar wxPanelClassName[]         = wxT("wxPanelClass");
 118 wxChar wxCanvasClassName[]        = wxT("wxCanvasClass");
 119
 120 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 121 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
 122 HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL;
 123
 124 HICON wxDEFAULT_FRAME_ICON = (HICON) NULL;
 125 HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL;
 126 HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 127
 128 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 129
 130 LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 131
 132 #if defined(__WIN95__) && !defined(__TWIN32__)
 133     #define wxUSE_RICHEDIT 1
 134 #else
 135     #define wxUSE_RICHEDIT 0
 136 #endif
 137
 138 #if wxUSE_RICHEDIT
 139     static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
 140 #endif
 141
 142 // ===========================================================================
 143 // implementation
 144 // ===========================================================================
 145
 146 // ---------------------------------------------------------------------------
 147 // wxApp
 148 // ---------------------------------------------------------------------------
 149
 150 #if !USE_SHARED_LIBRARY
 151     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 152
 153     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 154         EVT_IDLE(wxApp::OnIdle)
 155         EVT_END_SESSION(wxApp::OnEndSession)
 156         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
 157     END_EVENT_TABLE()
 158 #endif
 159
 160 //// Initialize
 161 bool wxApp::Initialize()
 162 {
 163     // Some people may wish to use this, but
 164     // probably it shouldn't be here by default.
 165 #ifdef __WXDEBUG__
 166     //    wxRedirectIOToConsole();
 167 #endif
 168
 169     wxBuffer = new wxChar[1500]; // FIXME
 170
 171     wxClassInfo::InitializeClasses();
 172
 173 #if wxUSE_RESOURCES
 174     wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
 175 #endif
 176
 177 #if wxUSE_THREADS
 178     wxPendingEventsLocker = new wxCriticalSection;
 179 #endif
 180
 181     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
 182     wxTheColourDatabase->Initialize();
 183
 184     wxInitializeStockLists();
 185     wxInitializeStockObjects();
 186
 187 #if wxUSE_WX_RESOURCES
 188     wxInitializeResourceSystem();
 189 #endif
 190
 191     wxBitmap::InitStandardHandlers();
 192
 193 #if defined(__WIN95__)
 194     InitCommonControls();
 195
 196 #if wxUSE_RICHEDIT
 197     gs_hRichEdit = LoadLibrary(wxT("RICHED32.DLL"));
 198
 199     if (gs_hRichEdit == (HINSTANCE) NULL)
 200     {
 201         wxLogError(_("Could not initialise Rich Edit DLL"));
 202     }
 203 #endif // wxUSE_RICHEDIT
 204
 205 #endif // __WIN95__
 206
 207 #if wxUSE_OLE
 208
 209 #ifdef __WIN16__
 210     // for OLE, enlarge message queue to be as large as possible
 211     int iMsg = 96;
 212     while (!SetMessageQueue(iMsg) && (iMsg -= 8))
 213         ;
 214 #endif // Win16
 215     // we need to initialize OLE library
 216     if ( FAILED(::OleInitialize(NULL)) )
 217         wxLogError(_("Cannot initialize OLE"));
 218 #endif // wxUSE_OLE
 219
 220 #if wxUSE_CTL3D
 221     if (!Ctl3dRegister(wxhInstance))
 222         wxLogError(wxT("Cannot register CTL3D"));
 223
 224     Ctl3dAutoSubclass(wxhInstance);
 225 #endif
 226
 227     g_globalCursor = new wxCursor;
 228
 229     wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
 230     wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
 231     wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 232
 233     wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
 234     wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
 235     wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("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, wxT("wxDISABLE_BUTTON_BITMAP") );
 244     if ( lb.lbHatch )
 245     {
 246         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
 247         ::DeleteObject( (HGDIOBJ)lb.lbHatch );
 248     }
 249     //else: wxWindows resources are probably not linked in
 250
 251 #if wxUSE_PENWINDOWS
 252     wxRegisterPenWin();
 253 #endif
 254
 255     wxWinHandleList = new wxList(wxKEY_INTEGER);
 256
 257     // This is to foil optimizations in Visual C++ that throw out dummy.obj.
 258     // PLEASE DO NOT ALTER THIS.
 259 #if defined(__VISUALC__) && !defined(WXMAKINGDLL)
 260     extern char wxDummyChar;
 261     if (wxDummyChar) wxDummyChar++;
 262 #endif
 263
 264     wxSetKeyboardHook(TRUE);
 265
 266     wxModule::RegisterModules();
 267     if (!wxModule::InitializeModules())
 268         return FALSE;
 269     return TRUE;
 270 }
 271
 272 // ---------------------------------------------------------------------------
 273 // RegisterWindowClasses
 274 // ---------------------------------------------------------------------------
 275
 276 // TODO we should only register classes really used by the app. For this it
 277 //      would be enough to just delay the class registration until an attempt
 278 //      to create a window of this class is made.
 279 bool wxApp::RegisterWindowClasses()
 280 {
 281     WNDCLASS wndclass;
 282
 283     // for each class we register one with CS_(V|H)REDRAW style and one
 284     // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag
 285     static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS;
 286     static const long styleNoRedraw = CS_DBLCLKS;
 287
 288     // the fields which are common to all classes
 289     wndclass.lpfnWndProc   = (WNDPROC)wxWndProc;
 290     wndclass.cbClsExtra    = 0;
 291     wndclass.cbWndExtra    = sizeof( DWORD ); // VZ: what is this DWORD used for?
 292     wndclass.hInstance     = wxhInstance;
 293     wndclass.hIcon         = (HICON) NULL;
 294     wndclass.hCursor       = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW);
 295     wndclass.lpszMenuName  = NULL;
 296
 297     // Register the frame window class.
 298     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
 299     wndclass.lpszClassName = wxFrameClassName;
 300     wndclass.style         = styleNormal;
 301
 302     if ( !RegisterClass(&wndclass) )
 303     {
 304         wxLogLastError("RegisterClass(frame)");
 305
 306         return FALSE;
 307     }
 308
 309     // "no redraw" frame
 310     wndclass.lpszClassName = wxFrameClassNameNoRedraw;
 311     wndclass.style         = styleNoRedraw;
 312
 313     if ( !RegisterClass(&wndclass) )
 314     {
 315         wxLogLastError("RegisterClass(no redraw frame)");
 316
 317         return FALSE;
 318     }
 319
 320     // Register the MDI frame window class.
 321     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
 322     wndclass.lpszClassName = wxMDIFrameClassName;
 323     wndclass.style         = styleNormal;
 324
 325     if ( !RegisterClass(&wndclass) )
 326     {
 327         wxLogLastError("RegisterClass(MDI parent)");
 328
 329         return FALSE;
 330     }
 331
 332     // "no redraw" MDI frame
 333     wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
 334     wndclass.style         = styleNoRedraw;
 335
 336     if ( !RegisterClass(&wndclass) )
 337     {
 338         wxLogLastError("RegisterClass(no redraw MDI parent frame)");
 339
 340         return FALSE;
 341     }
 342
 343     // Register the MDI child frame window class.
 344     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
 345     wndclass.lpszClassName = wxMDIChildFrameClassName;
 346     wndclass.style         = styleNormal;
 347
 348     if ( !RegisterClass(&wndclass) )
 349     {
 350         wxLogLastError("RegisterClass(MDI child)");
 351
 352         return FALSE;
 353     }
 354
 355     // "no redraw" MDI child frame
 356     wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw;
 357     wndclass.style         = styleNoRedraw;
 358
 359     if ( !RegisterClass(&wndclass) )
 360     {
 361         wxLogLastError("RegisterClass(no redraw MDI child)");
 362
 363         return FALSE;
 364     }
 365
 366     // Register the panel window class.
 367     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
 368     wndclass.lpszClassName = wxPanelClassName;
 369     wndclass.style         = styleNormal;
 370
 371     if ( !RegisterClass(&wndclass) )
 372     {
 373         wxLogLastError("RegisterClass(panel)");
 374
 375         return FALSE;
 376     }
 377
 378     // Register the canvas and textsubwindow class name
 379     wndclass.hbrBackground = (HBRUSH)NULL;
 380     wndclass.lpszClassName = wxCanvasClassName;
 381
 382     if ( !RegisterClass(&wndclass) )
 383     {
 384         wxLogLastError("RegisterClass(canvas)");
 385
 386         return FALSE;
 387     }
 388
 389     return TRUE;
 390 }
 391
 392 // ---------------------------------------------------------------------------
 393 // Convert Windows to argc, argv style
 394 // ---------------------------------------------------------------------------
 395
 396 void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 397 {
 398     wxStringList args;
 399
 400     wxString cmdLine(lpCmdLine);
 401     int count = 0;
 402
 403     // Get application name
 404     wxChar name[260]; // 260 is MAX_PATH value from windef.h
 405     ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name));
 406
 407     args.Add(name);
 408     count++;
 409
 410     wxStrcpy(name, wxFileNameFromPath(name));
 411     wxStripExtension(name);
 412     wxTheApp->SetAppName(name);
 413
 414     // Break up string
 415     // Treat strings enclosed in double-quotes as single arguments
 416     int i = 0;
 417     int len = cmdLine.Length();
 418     while (i < len)
 419     {
 420         // Skip whitespace
 421         while ((i < len) && wxIsspace(cmdLine.GetChar(i)))
 422             i ++;
 423
 424         if (i < len)
 425         {
 426             if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
 427             {
 428                 i ++;
 429                 int first = i;
 430                 while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
 431                     i ++;
 432
 433                 wxString arg(cmdLine.Mid(first, (i - first)));
 434
 435                 args.Add(arg);
 436                 count ++;
 437
 438                 if (i < len)
 439                     i ++; // Skip past 2nd quote
 440             }
 441             else // Unquoted argument
 442             {
 443                 int first = i;
 444                 while ((i < len) && !wxIsspace(cmdLine.GetChar(i)))
 445                     i ++;
 446
 447                 wxString arg(cmdLine.Mid(first, (i - first)));
 448
 449                 args.Add(arg);
 450                 count ++;
 451             }
 452         }
 453     }
 454
 455     wxTheApp->argv = new wxChar*[count + 1];
 456     for (i = 0; i < count; i++)
 457     {
 458         wxString arg(args[i]);
 459         wxTheApp->argv[i] = copystring((const wxChar*)arg);
 460     }
 461     wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list
 462     wxTheApp->argc = count;
 463 }
 464
 465 //// Cleans up any wxWindows internal structures left lying around
 466
 467 void wxApp::CleanUp()
 468 {
 469     //// COMMON CLEANUP
 470
 471 #if wxUSE_LOG
 472     // flush the logged messages if any and install a 'safer' log target: the
 473     // default one (wxLogGui) can't be used after the resources are freed just
 474     // below and the user suppliedo ne might be even more unsafe (using any
 475     // wxWindows GUI function is unsafe starting from now)
 476     wxLog::DontCreateOnDemand();
 477
 478     // this will flush the old messages if any
 479     delete wxLog::SetActiveTarget(new wxLogStderr);
 480 #endif // wxUSE_LOG
 481
 482     // One last chance for pending objects to be cleaned up
 483     wxTheApp->DeletePendingObjects();
 484
 485     wxModule::CleanUpModules();
 486
 487 #if wxUSE_WX_RESOURCES
 488     wxCleanUpResourceSystem();
 489
 490     //  wxDefaultResourceTable->ClearTable();
 491 #endif
 492
 493     // Indicate that the cursor can be freed, so that cursor won't be deleted
 494     // by deleting the bitmap list before g_globalCursor goes out of scope
 495     // (double deletion of the cursor).
 496     wxSetCursor(wxNullCursor);
 497     delete g_globalCursor;
 498     g_globalCursor = NULL;
 499
 500     wxDeleteStockObjects();
 501
 502     // Destroy all GDI lists, etc.
 503     wxDeleteStockLists();
 504
 505     delete wxTheColourDatabase;
 506     wxTheColourDatabase = NULL;
 507
 508     wxBitmap::CleanUpHandlers();
 509
 510     delete[] wxBuffer;
 511     wxBuffer = NULL;
 512
 513     //// WINDOWS-SPECIFIC CLEANUP
 514
 515     wxSetKeyboardHook(FALSE);
 516
 517 #ifdef __WIN95__
 518
 519 #if wxUSE_RICHEDIT
 520     if (gs_hRichEdit != (HINSTANCE) NULL)
 521         FreeLibrary(gs_hRichEdit);
 522 #endif
 523
 524 #endif
 525
 526 #if wxUSE_PENWINDOWS
 527     wxCleanUpPenWin();
 528 #endif
 529
 530     if (wxSTD_FRAME_ICON)
 531         DestroyIcon(wxSTD_FRAME_ICON);
 532     if (wxSTD_MDICHILDFRAME_ICON)
 533         DestroyIcon(wxSTD_MDICHILDFRAME_ICON);
 534     if (wxSTD_MDIPARENTFRAME_ICON)
 535         DestroyIcon(wxSTD_MDIPARENTFRAME_ICON);
 536
 537     if (wxDEFAULT_FRAME_ICON)
 538         DestroyIcon(wxDEFAULT_FRAME_ICON);
 539     if (wxDEFAULT_MDICHILDFRAME_ICON)
 540         DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON);
 541     if (wxDEFAULT_MDIPARENTFRAME_ICON)
 542         DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON);
 543
 544     if ( wxDisableButtonBrush )
 545         ::DeleteObject( wxDisableButtonBrush );
 546
 547 #if wxUSE_OLE
 548     ::OleUninitialize();
 549 #endif
 550
 551 #if wxUSE_CTL3D
 552     Ctl3dUnregister(wxhInstance);
 553 #endif
 554
 555     if (wxWinHandleList)
 556         delete wxWinHandleList;
 557
 558     // GL: I'm annoyed ... I don't know where to put this and I don't want to
 559     // create a module for that as it's part of the core.
 560     delete wxPendingEvents;
 561 #if wxUSE_THREADS
 562     delete wxPendingEventsLocker;
 563     // If we don't do the following, we get an apparent memory leak.
 564     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
 565 #endif
 566
 567     wxClassInfo::CleanUpClasses();
 568
 569     delete wxTheApp;
 570     wxTheApp = NULL;
 571
 572 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
 573     // At this point we want to check if there are any memory
 574     // blocks that aren't part of the wxDebugContext itself,
 575     // as a special case. Then when dumping we need to ignore
 576     // wxDebugContext, too.
 577     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
 578     {
 579         wxLogDebug(wxT("There were memory leaks."));
 580         wxDebugContext::Dump();
 581         wxDebugContext::PrintStatistics();
 582     }
 583     //  wxDebugContext::SetStream(NULL, NULL);
 584 #endif
 585
 586 #if wxUSE_LOG
 587     // do it as the very last thing because everything else can log messages
 588     delete wxLog::SetActiveTarget(NULL);
 589 #endif // wxUSE_LOG
 590 }
 591
 592 #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL))
 593
 594 // temporarily disable this warning which would be generated in release builds
 595 // because of __try
 596 #ifdef __VISUALC__
 597     #pragma warning(disable: 4715) // not all control paths return a value
 598 #endif // Visual C++
 599
 600 //// Main wxWindows entry point
 601 int wxEntry(WXHINSTANCE hInstance,
 602             WXHINSTANCE WXUNUSED(hPrevInstance),
 603             char *lpCmdLine,
 604             int nCmdShow,
 605             bool enterLoop)
 606 {
 607     // do check for memory leaks on program exit
 608     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
 609     //  deallocated memory which may be used to simulate low-memory condition)
 610     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
 611
 612     // take everything into a try-except block in release build
 613     // FIXME other compilers must support Win32 SEH (structured exception
 614     //       handling) too, just find the appropriate keyword in their docs!
 615     //       Please note that it's _not_ the same as C++ exceptions!
 616 #if !defined(__WXDEBUG__) && defined(__VISUALC__)
 617     #define CATCH_PROGRAM_EXCEPTIONS
 618
 619     __try {
 620 #else
 621     #undef  CATCH_PROGRAM_EXCEPTIONS
 622 #endif
 623         wxhInstance = (HINSTANCE) hInstance;
 624
 625         if (!wxApp::Initialize())
 626             return 0;
 627
 628         // create the application object or ensure that one already exists
 629         if (!wxTheApp)
 630         {
 631             // The app may have declared a global application object, but we recommend
 632             // the IMPLEMENT_APP macro is used instead, which sets an initializer
 633             // function for delayed, dynamic app object construction.
 634             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 635                          wxT("No initializer - use IMPLEMENT_APP macro.") );
 636
 637             wxTheApp = (*wxApp::GetInitializerFunction()) ();
 638         }
 639
 640         wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 641
 642         // save the WinMain() parameters
 643         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
 644         wxTheApp->m_nCmdShow = nCmdShow;
 645
 646         // GUI-specific initialisation. In fact on Windows we don't have any,
 647         // but this call is provided for compatibility across platforms.
 648         wxTheApp->OnInitGui();
 649
 650         // We really don't want timestamps by default, because it means
 651         // we can't simply double-click on the error message and get to that
 652         // line in the source. So VC++ at least, let's have a sensible default.
 653 #ifdef __VISUALC__
 654         wxLog::SetTimestamp(NULL);
 655 #endif
 656
 657         int retValue = 0;
 658
 659         if ( wxTheApp->OnInit() )
 660         {
 661             if ( enterLoop )
 662             {
 663                 retValue = wxTheApp->OnRun();
 664             }
 665             else
 666                 // We want to initialize, but not run or exit immediately.
 667                 return 1;
 668         }
 669         //else: app initialization failed, so we skipped OnRun()
 670
 671         wxWindow *topWindow = wxTheApp->GetTopWindow();
 672         if ( topWindow )
 673         {
 674             // Forcibly delete the window.
 675             if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
 676                     topWindow->IsKindOf(CLASSINFO(wxDialog)) )
 677             {
 678                 topWindow->Close(TRUE);
 679                 wxTheApp->DeletePendingObjects();
 680             }
 681             else
 682             {
 683                 delete topWindow;
 684                 wxTheApp->SetTopWindow(NULL);
 685             }
 686         }
 687
 688         wxTheApp->OnExit();
 689
 690         wxApp::CleanUp();
 691
 692         return retValue;
 693
 694 #ifdef CATCH_PROGRAM_EXCEPTIONS
 695     }
 696     __except ( EXCEPTION_EXECUTE_HANDLER ) {
 697         /*
 698            if ( wxTheApp )
 699            wxTheApp->OnFatalException();
 700          */
 701
 702         // using wxLog would be unsafe here
 703         ::MessageBox(NULL,
 704                      _("Unrecoverable program error detected: "
 705                      " the application will terminate."),
 706                      _("Fatal Error"),
 707                      MB_APPLMODAL | MB_ICONSTOP | MB_OK);
 708
 709         ::ExitProcess(3); // the same exit code as abort()
 710
 711         // NOTREACHED
 712     }
 713 #endif // CATCH_PROGRAM_EXCEPTIONS
 714 }
 715
 716 // restore warning state
 717 #ifdef __VISUALC__
 718     #pragma warning(default: 4715) // not all control paths return a value
 719 #endif // Visual C++
 720
 721 #else /*  _WINDLL  */
 722
 723 //// Entry point for DLLs
 724
 725 int wxEntry(WXHINSTANCE hInstance)
 726 {
 727     wxhInstance = (HINSTANCE) hInstance;
 728     wxApp::Initialize();
 729
 730     // The app may have declared a global application object, but we recommend
 731     // the IMPLEMENT_APP macro is used instead, which sets an initializer function
 732     // for delayed, dynamic app object construction.
 733     if (!wxTheApp)
 734     {
 735         wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
 736                      "No initializer - use IMPLEMENT_APP macro." );
 737
 738         wxTheApp = (* wxApp::GetInitializerFunction()) ();
 739     }
 740
 741     wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" );
 742
 743     wxTheApp->argc = 0;
 744     wxTheApp->argv = NULL;
 745
 746     wxTheApp->OnInitGui();
 747
 748     wxTheApp->OnInit();
 749
 750     wxWindow *topWindow = wxTheApp->GetTopWindow();
 751     if ( topWindow && topWindow->GetHWND())
 752     {
 753         topWindow->Show(TRUE);
 754     }
 755
 756     return 1;
 757 }
 758 #endif // _WINDLL
 759
 760 //// Static member initialization
 761
 762 wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
 763
 764 wxApp::wxApp()
 765 {
 766     m_topWindow = NULL;
 767     wxTheApp = this;
 768     m_wantDebugOutput = TRUE;
 769
 770     argc = 0;
 771     argv = NULL;
 772     m_printMode = wxPRINT_WINDOWS;
 773     m_exitOnFrameDelete = TRUE;
 774     m_auto3D = TRUE;
 775 }
 776
 777 wxApp::~wxApp()
 778 {
 779     // Delete command-line args
 780     int i;
 781     for (i = 0; i < argc; i++)
 782     {
 783         delete[] argv[i];
 784     }
 785     delete[] argv;
 786 }
 787
 788 bool wxApp::Initialized()
 789 {
 790 #ifndef _WINDLL
 791     if (GetTopWindow())
 792         return TRUE;
 793     else
 794         return FALSE;
 795 #endif
 796 #ifdef _WINDLL // Assume initialized if DLL (no way of telling)
 797     return TRUE;
 798 #endif
 799 }
 800
 801 /*
 802  * Get and process a message, returning FALSE if WM_QUIT
 803  * received (and also set the flag telling the app to exit the main loop)
 804  *
 805  */
 806 bool wxApp::DoMessage()
 807 {
 808     BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0);
 809     if ( rc == 0 )
 810     {
 811         // got WM_QUIT
 812         m_keepGoing = FALSE;
 813
 814         return FALSE;
 815     }
 816     else if ( rc == -1 )
 817     {
 818         // should never happen, but let's test for it nevertheless
 819         wxLogLastError("GetMessage");
 820     }
 821     else
 822     {
 823 #if wxUSE_THREADS
 824         wxASSERT_MSG( wxThread::IsMain(),
 825                       wxT("only the main thread can process Windows messages") );
 826
 827         static bool s_hadGuiLock = TRUE;
 828         static wxMsgArray s_aSavedMessages;
 829
 830         // if a secondary thread owns is doing GUI calls, save all messages for
 831         // later processing - we can't process them right now because it will
 832         // lead to recursive library calls (and we're not reentrant)
 833         if ( !wxGuiOwnedByMainThread() )
 834         {
 835             s_hadGuiLock = FALSE;
 836
 837             // leave out WM_COMMAND messages: too dangerous, sometimes
 838             // the message will be processed twice
 839             if ( !wxIsWaitingForThread() ||
 840                     s_currentMsg.message != WM_COMMAND )
 841             {
 842                 s_aSavedMessages.Add(s_currentMsg);
 843             }
 844
 845             return TRUE;
 846         }
 847         else
 848         {
 849             // have we just regained the GUI lock? if so, post all of the saved
 850             // messages
 851             //
 852             // FIXME of course, it's not _exactly_ the same as processing the
 853             //       messages normally - expect some things to break...
 854             if ( !s_hadGuiLock )
 855             {
 856                 s_hadGuiLock = TRUE;
 857
 858                 size_t count = s_aSavedMessages.Count();
 859                 for ( size_t n = 0; n < count; n++ )
 860                 {
 861                     MSG& msg = s_aSavedMessages[n];
 862
 863                     if ( !ProcessMessage((WXMSG *)&msg) )
 864                     {
 865                         ::TranslateMessage(&msg);
 866                         ::DispatchMessage(&msg);
 867                     }
 868                 }
 869
 870                 s_aSavedMessages.Empty();
 871             }
 872         }
 873 #endif // wxUSE_THREADS
 874
 875         // Process the message
 876         if ( !ProcessMessage((WXMSG *)&s_currentMsg) )
 877         {
 878             ::TranslateMessage(&s_currentMsg);
 879             ::DispatchMessage(&s_currentMsg);
 880         }
 881     }
 882
 883     return TRUE;
 884 }
 885
 886 /*
 887  * Keep trying to process messages until WM_QUIT
 888  * received.
 889  *
 890  * If there are messages to be processed, they will all be
 891  * processed and OnIdle will not be called.
 892  * When there are no more messages, OnIdle is called.
 893  * If OnIdle requests more time,
 894  * it will be repeatedly called so long as there are no pending messages.
 895  * A 'feature' of this is that once OnIdle has decided that no more processing
 896  * is required, then it won't get processing time until further messages
 897  * are processed (it'll sit in DoMessage).
 898  */
 899
 900 int wxApp::MainLoop()
 901 {
 902     m_keepGoing = TRUE;
 903
 904     while ( m_keepGoing )
 905     {
 906 #if wxUSE_THREADS
 907         wxMutexGuiLeaveOrEnter();
 908 #endif // wxUSE_THREADS
 909
 910         while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) &&
 911                 ProcessIdle() )
 912         {
 913         }
 914
 915
 916         DoMessage();
 917     }
 918
 919     return s_currentMsg.wParam;
 920 }
 921
 922 // Returns TRUE if more time is needed.
 923 bool wxApp::ProcessIdle()
 924 {
 925     wxIdleEvent event;
 926     event.SetEventObject(this);
 927     ProcessEvent(event);
 928
 929     return event.MoreRequested();
 930 }
 931
 932 void wxApp::ExitMainLoop()
 933 {
 934     m_keepGoing = FALSE;
 935 }
 936
 937 bool wxApp::Pending()
 938 {
 939     return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0);
 940 }
 941
 942 void wxApp::Dispatch()
 943 {
 944     DoMessage();
 945 }
 946
 947 /*
 948  * Give all windows a chance to preprocess
 949  * the message. Some may have accelerator tables, or have
 950  * MDI complications.
 951  */
 952
 953 bool wxApp::ProcessMessage(WXMSG *wxmsg)
 954 {
 955     MSG *msg = (MSG *)wxmsg;
 956     HWND hWnd = msg->hwnd;
 957     wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd;
 958
 959     // for some composite controls (like a combobox), wndThis might be NULL
 960     // because the subcontrol is not a wxWindow, but only the control itself
 961     // is - try to catch this case
 962     while ( hWnd && !wndThis )
 963     {
 964         hWnd = ::GetParent(hWnd);
 965         wndThis = wxFindWinFromHandle((WXHWND)hWnd);
 966     }
 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 #if wxUSE_LOG
1000     // flush the logged messages if any
1001     wxLog *pLog = wxLog::GetActiveTarget();
1002     if ( pLog != NULL && pLog->HasPendingMessages() )
1003         pLog->Flush();
1004 #endif // wxUSE_LOG
1005
1006     // Send OnIdle events to all windows
1007     if ( SendIdleEvents() )
1008     {
1009         // SendIdleEvents() returns TRUE if at least one window requested more
1010         // idle events
1011         event.RequestMore(TRUE);
1012     }
1013
1014     // If they are pending events, we must process them: pending events are
1015     // either events to the threads other than main or events posted with
1016     // wxPostEvent() functions
1017     ProcessPendingEvents();
1018
1019     s_inOnIdle = FALSE;
1020 }
1021
1022 // Send idle event to all top-level windows
1023 bool wxApp::SendIdleEvents()
1024 {
1025     bool needMore = FALSE;
1026
1027     wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
1028     while (node)
1029     {
1030         wxWindow* win = node->GetData();
1031         if (SendIdleEvents(win))
1032             needMore = TRUE;
1033         node = node->GetNext();
1034     }
1035
1036     return needMore;
1037 }
1038
1039 // Send idle event to window and all subwindows
1040 bool wxApp::SendIdleEvents(wxWindow* win)
1041 {
1042     bool needMore = FALSE;
1043
1044     wxIdleEvent event;
1045     event.SetEventObject(win);
1046     win->GetEventHandler()->ProcessEvent(event);
1047
1048     if (event.MoreRequested())
1049         needMore = TRUE;
1050
1051     wxNode* node = win->GetChildren().First();
1052     while (node)
1053     {
1054         wxWindow* win = (wxWindow*) node->Data();
1055         if (SendIdleEvents(win))
1056             needMore = TRUE;
1057
1058         node = node->Next();
1059     }
1060     return needMore;
1061 }
1062
1063 void wxApp::DeletePendingObjects()
1064 {
1065     wxNode *node = wxPendingDelete.First();
1066     while (node)
1067     {
1068         wxObject *obj = (wxObject *)node->Data();
1069
1070         delete obj;
1071
1072         if (wxPendingDelete.Member(obj))
1073             delete node;
1074
1075         // Deleting one object may have deleted other pending
1076         // objects, so start from beginning of list again.
1077         node = wxPendingDelete.First();
1078     }
1079 }
1080
1081 void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event))
1082 {
1083     if (GetTopWindow())
1084         GetTopWindow()->Close(TRUE);
1085 }
1086
1087 // Default behaviour: close the application with prompts. The
1088 // user can veto the close, and therefore the end session.
1089 void wxApp::OnQueryEndSession(wxCloseEvent& event)
1090 {
1091     if (GetTopWindow())
1092     {
1093         if (!GetTopWindow()->Close(!event.CanVeto()))
1094             event.Veto(TRUE);
1095     }
1096 }
1097
1098 int wxApp::GetComCtl32Version() const
1099 {
1100     // have we loaded COMCTL32 yet?
1101     HMODULE theModule = ::GetModuleHandle(wxT("COMCTL32"));
1102     int version = 0;
1103
1104     // if so, then we can check for the version
1105     if (theModule)
1106     {
1107         // InitCommonControlsEx is unique to 4.7 and later
1108         FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
1109
1110         if (! theProc)
1111         {                    // not found, must be 4.00
1112             version = 400;
1113         }
1114         else
1115         {
1116             // The following symbol are unique to 4.71
1117             //   DllInstall
1118             //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
1119             //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
1120             //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
1121             //   FlatSB_ShowScrollBar
1122             //   _DrawIndirectImageList _DuplicateImageList
1123             //   InitializeFlatSB
1124             //   UninitializeFlatSB
1125             // we could check for any of these - I chose DllInstall
1126             FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
1127             if (! theProc)
1128             {
1129                 // not found, must be 4.70
1130                 version = 470;
1131             }
1132             else
1133             {                         // found, must be 4.71
1134                 version = 471;
1135             }
1136         }
1137     }
1138     return version;
1139 }
1140
1141 void wxExit()
1142 {
1143     wxLogError(_("Fatal error: exiting"));
1144
1145     wxApp::CleanUp();
1146 }
1147
1148 // Yield to incoming messages
1149 bool wxYield()
1150 {
1151     // we don't want to process WM_QUIT from here - it should be processed in
1152     // the main event loop in order to stop it
1153
1154     MSG msg;
1155     while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
1156             msg.message != WM_QUIT )
1157     {
1158         if ( !wxTheApp->DoMessage() )
1159             break;
1160     }
1161
1162     // If they are pending events, we must process them.
1163     wxTheApp->ProcessPendingEvents();
1164
1165     return TRUE;
1166 }
1167
1168 wxIcon
1169 wxApp::GetStdIcon(int which) const
1170 {
1171     switch(which)
1172     {
1173         case wxICON_INFORMATION:
1174             return wxIcon("wxICON_INFO");
1175
1176         case wxICON_QUESTION:
1177             return wxIcon("wxICON_QUESTION");
1178
1179         case wxICON_EXCLAMATION:
1180             return wxIcon("wxICON_WARNING");
1181
1182         default:
1183             wxFAIL_MSG(wxT("requested non existent standard icon"));
1184             // still fall through
1185
1186         case wxICON_HAND:
1187             return wxIcon("wxICON_ERROR");
1188     }
1189 }
1190
1191
1192 HINSTANCE wxGetInstance()
1193 {
1194     return wxhInstance;
1195 }
1196
1197 void wxSetInstance(HINSTANCE hInst)
1198 {
1199     wxhInstance = hInst;
1200 }
1201
1202 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
1203 // if in a separate file. So include it here to ensure it's linked.
1204 #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
1205 #include "main.cpp"
1206 #endif