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