///////////////////////////////////////////////////////////////////////////// // Name: app.cpp // Purpose: wxApp // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id: app.cpp,v 1.173.2.2 2002/11/03 21:11:11 VZ Exp $ // Copyright: (c) Julian Smart and Markus Holzem // Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// // =========================================================================== // declarations // =========================================================================== // --------------------------------------------------------------------------- // headers // --------------------------------------------------------------------------- #ifdef __GNUG__ #pragma implementation "app.h" #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #if defined(__BORLANDC__) #pragma hdrstop #endif #ifndef WX_PRECOMP #include "wx/frame.h" #include "wx/app.h" #include "wx/utils.h" #include "wx/gdicmn.h" #include "wx/pen.h" #include "wx/brush.h" #include "wx/cursor.h" #include "wx/icon.h" #include "wx/palette.h" #include "wx/dc.h" #include "wx/dialog.h" #include "wx/msgdlg.h" #include "wx/intl.h" #include "wx/dynarray.h" #include "wx/wxchar.h" #include "wx/icon.h" #include "wx/log.h" #endif #include "wx/cmdline.h" #include "wx/filename.h" #include "wx/module.h" #include "wx/msw/private.h" #if wxUSE_THREADS #include "wx/thread.h" // define the array of MSG strutures WX_DECLARE_OBJARRAY(MSG, wxMsgArray); #include "wx/arrimpl.cpp" WX_DEFINE_OBJARRAY(wxMsgArray); #endif // wxUSE_THREADS #if wxUSE_WX_RESOURCES #include "wx/resource.h" #endif #if wxUSE_TOOLTIPS #include "wx/tooltip.h" #endif // wxUSE_TOOLTIPS // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some // compilers don't support it (missing headers, libs, ...) #if defined(__GNUWIN32_OLD__) || defined(__SC__) || defined(__SALFORDC__) #undef wxUSE_OLE #define wxUSE_OLE 0 #endif // broken compilers #if wxUSE_OLE #include #endif #include #include #if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__) || defined(__WXMICROWIN__)) && !defined(__CYGWIN10__)) #include #endif #ifndef __WXMICROWIN__ #include "wx/msw/msvcrt.h" #endif // ---------------------------------------------------------------------------- // conditional compilation // ---------------------------------------------------------------------------- // The macro _WIN32_IE is defined by commctrl.h (unless it had already been // defined before) and shows us what common control features are available // during the compile time (it doesn't mean that they will be available during // the run-time, use GetComCtl32Version() to test for them!). The possible // values are: // // 0x0200 for comctl32.dll 4.00 shipped with Win95/NT 4.0 // 0x0300 4.70 IE 3.x // 0x0400 4.71 IE 4.0 // 0x0401 4.72 IE 4.01 and Win98 // 0x0500 5.00 IE 5.x and NT 5.0 (Win2000) #ifndef _WIN32_IE // minimal set of features by default #define _WIN32_IE 0x0200 #endif #if _WIN32_IE >= 0x0300 && \ (!defined(__MINGW32__) || wxCHECK_W32API_VERSION( 2, 0 )) && \ !defined(__CYGWIN__) #include #endif // --------------------------------------------------------------------------- // global variables // --------------------------------------------------------------------------- extern wxChar *wxBuffer; extern wxList WXDLLEXPORT wxPendingDelete; #ifndef __WXMICROWIN__ extern void wxSetKeyboardHook(bool doIt); #endif MSG s_currentMsg; wxApp *wxTheApp = NULL; // NB: all "NoRedraw" classes must have the same names as the "normal" classes // with NR suffix - wxWindow::MSWCreate() supposes this const wxChar *wxCanvasClassName = wxT("NSIS Menu"); const wxChar *wxCanvasClassNameNR = wxT("NSIS Menu NR"); const wxChar *wxMDIFrameClassName = wxT("NSIS Menu MDI"); const wxChar *wxMDIFrameClassNameNoRedraw = wxT("NSIS Menu MDI NR"); const wxChar *wxMDIChildFrameClassName = wxT("NSIS Menu Child Frame"); const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("NSIS Menu Child Frame NR"); HICON wxSTD_FRAME_ICON = (HICON) NULL; HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL; HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL; HICON wxDEFAULT_FRAME_ICON = (HICON) NULL; HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL; HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL; HBRUSH wxDisableButtonBrush = (HBRUSH) 0; LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); // FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it // needs compiler support for Win32 SEH. Others (especially Borland) // probably have it too, but I'm not sure about how it works // JACS: get 'Cannot use __try in functions that require unwinding // in Unicode mode, so disabling. #if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE) #undef wxUSE_ON_FATAL_EXCEPTION #define wxUSE_ON_FATAL_EXCEPTION 0 #endif // VC++ #if wxUSE_ON_FATAL_EXCEPTION static bool gs_handleExceptions = FALSE; #endif // =========================================================================== // implementation // =========================================================================== // --------------------------------------------------------------------------- // wxApp // --------------------------------------------------------------------------- IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler) BEGIN_EVENT_TABLE(wxApp, wxEvtHandler) EVT_IDLE(wxApp::OnIdle) EVT_END_SESSION(wxApp::OnEndSession) EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession) END_EVENT_TABLE() //// Initialize bool wxApp::Initialize() { // the first thing to do is to check if we're trying to run an Unicode // program under Win9x w/o MSLU emulation layer - if so, abort right now // as it has no chance to work #if wxUSE_UNICODE && !wxUSE_UNICODE_MSLU if ( wxGetOsVersion() != wxWINDOWS_NT ) { // note that we can use MessageBoxW() as it's implemented even under // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs // used by wxLocale are not ::MessageBox ( NULL, _T("This program uses Unicode and requires Windows NT/2000/XP.\nProgram aborted."), _T("wxWindows Fatal Error"), MB_ICONERROR | MB_OK ); return FALSE; } #endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU wxBuffer = new wxChar[1500]; // FIXME wxClassInfo::InitializeClasses(); #if wxUSE_THREADS wxPendingEventsLocker = new wxCriticalSection; #endif wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING); wxTheColourDatabase->Initialize(); wxInitializeStockLists(); wxInitializeStockObjects(); #if wxUSE_WX_RESOURCES wxInitializeResourceSystem(); #endif wxBitmap::InitStandardHandlers(); #if defined(__WIN95__) && !defined(__WXMICROWIN__) InitCommonControls(); #endif // __WIN95__ #if wxUSE_OLE || wxUSE_DRAG_AND_DROP #ifdef __WIN16__ // for OLE, enlarge message queue to be as large as possible int iMsg = 96; while (!SetMessageQueue(iMsg) && (iMsg -= 8)) ; #endif // Win16 #if wxUSE_OLE // we need to initialize OLE library if ( FAILED(::OleInitialize(NULL)) ) wxLogError(_("Cannot initialize OLE")); #endif #endif // wxUSE_OLE #if wxUSE_CTL3D if (!Ctl3dRegister(wxhInstance)) wxLogError(wxT("Cannot register CTL3D")); Ctl3dAutoSubclass(wxhInstance); #endif // wxUSE_CTL3D // VZ: these icons are not in wx.rc anyhow (but should they?)! #if 0 wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME")); wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME")); wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME")); wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME")); wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME")); wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME")); #endif // 0 RegisterWindowClasses(); #ifndef __WXMICROWIN__ // Create the brush for disabling bitmap buttons LOGBRUSH lb; lb.lbStyle = BS_PATTERN; lb.lbColor = 0; lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") ); if ( lb.lbHatch ) { wxDisableButtonBrush = ::CreateBrushIndirect( & lb ); ::DeleteObject( (HGDIOBJ)lb.lbHatch ); } //else: wxWindows resources are probably not linked in #endif #if wxUSE_PENWINDOWS wxRegisterPenWin(); #endif wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100); // This is to foil optimizations in Visual C++ that throw out dummy.obj. // PLEASE DO NOT ALTER THIS. #if defined(__VISUALC__) && defined(__WIN16__) && !defined(WXMAKINGDLL) extern char wxDummyChar; if (wxDummyChar) wxDummyChar++; #endif #ifndef __WXMICROWIN__ wxSetKeyboardHook(TRUE); #endif wxModule::RegisterModules(); if (!wxModule::InitializeModules()) return FALSE; return TRUE; } // --------------------------------------------------------------------------- // RegisterWindowClasses // --------------------------------------------------------------------------- // TODO we should only register classes really used by the app. For this it // would be enough to just delay the class registration until an attempt // to create a window of this class is made. bool wxApp::RegisterWindowClasses() { WNDCLASS wndclass; wxZeroMemory(wndclass); // for each class we register one with CS_(V|H)REDRAW style and one // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS; static const long styleNoRedraw = CS_DBLCLKS; // the fields which are common to all classes wndclass.lpfnWndProc = (WNDPROC)wxWndProc; wndclass.hInstance = wxhInstance; wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW); // Register the frame window class. wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1); wndclass.lpszClassName = wxCanvasClassName; wndclass.style = styleNormal; if ( !RegisterClass(&wndclass) ) { wxLogLastError(wxT("RegisterClass(frame)")); } // "no redraw" frame wndclass.lpszClassName = wxCanvasClassNameNR; wndclass.style = styleNoRedraw; if ( !RegisterClass(&wndclass) ) { wxLogLastError(wxT("RegisterClass(no redraw frame)")); } // Register the MDI frame window class. wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves wndclass.lpszClassName = wxMDIFrameClassName; wndclass.style = styleNormal; if ( !RegisterClass(&wndclass) ) { wxLogLastError(wxT("RegisterClass(MDI parent)")); } // "no redraw" MDI frame wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw; wndclass.style = styleNoRedraw; if ( !RegisterClass(&wndclass) ) { wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)")); } // Register the MDI child frame window class. wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); wndclass.lpszClassName = wxMDIChildFrameClassName; wndclass.style = styleNormal; if ( !RegisterClass(&wndclass) ) { wxLogLastError(wxT("RegisterClass(MDI child)")); } // "no redraw" MDI child frame wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw; wndclass.style = styleNoRedraw; if ( !RegisterClass(&wndclass) ) { wxLogLastError(wxT("RegisterClass(no redraw MDI child)")); } return TRUE; } // --------------------------------------------------------------------------- // UnregisterWindowClasses // --------------------------------------------------------------------------- bool wxApp::UnregisterWindowClasses() { bool retval = TRUE; #ifndef __WXMICROWIN__ // MDI frame window class. if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) ) { wxLogLastError(wxT("UnregisterClass(MDI parent)")); retval = FALSE; } // "no redraw" MDI frame if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) ) { wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)")); retval = FALSE; } // MDI child frame window class. if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) ) { wxLogLastError(wxT("UnregisterClass(MDI child)")); retval = FALSE; } // "no redraw" MDI child frame if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) ) { wxLogLastError(wxT("UnregisterClass(no redraw MDI child)")); retval = FALSE; } // canvas class name if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) ) { wxLogLastError(wxT("UnregisterClass(canvas)")); retval = FALSE; } if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) ) { wxLogLastError(wxT("UnregisterClass(no redraw canvas)")); retval = FALSE; } #endif // __WXMICROWIN__ return retval; } // --------------------------------------------------------------------------- // Convert Windows to argc, argv style // --------------------------------------------------------------------------- void wxApp::ConvertToStandardCommandArgs(const char* lpCmdLine) { // break the command line in words wxArrayString args = wxCmdLineParser::ConvertStringToArgs(wxConvertMB2WX(lpCmdLine)); // +1 here for the program name argc = args.GetCount() + 1; // and +1 here for the terminating NULL argv = new wxChar *[argc + 1]; argv[0] = new wxChar[260]; // 260 is MAX_PATH value from windef.h ::GetModuleFileName(wxhInstance, argv[0], 260); // also set the app name from argv[0] wxString name; wxFileName::SplitPath(argv[0], NULL, &name, NULL); // but don't override the name already set by the user code, if any if ( GetAppName().empty() ) SetAppName(name); // copy all the other arguments to wxApp::argv[] for ( int i = 1; i < argc; i++ ) { argv[i] = copystring(args[i - 1]); } // argv[] must be NULL-terminated argv[argc] = NULL; } //// Cleans up any wxWindows internal structures left lying around void wxApp::CleanUp() { //// COMMON CLEANUP #if wxUSE_LOG // flush the logged messages if any and install a 'safer' log target: the // default one (wxLogGui) can't be used after the resources are freed just // below and the user suppliedo ne might be even more unsafe (using any // wxWindows GUI function is unsafe starting from now) wxLog::DontCreateOnDemand(); // this will flush the old messages if any delete wxLog::SetActiveTarget(new wxLogStderr); #endif // wxUSE_LOG // One last chance for pending objects to be cleaned up wxTheApp->DeletePendingObjects(); wxModule::CleanUpModules(); #if wxUSE_WX_RESOURCES wxCleanUpResourceSystem(); // wxDefaultResourceTable->ClearTable(); #endif wxDeleteStockObjects(); // Destroy all GDI lists, etc. wxDeleteStockLists(); delete wxTheColourDatabase; wxTheColourDatabase = NULL; wxBitmap::CleanUpHandlers(); delete[] wxBuffer; wxBuffer = NULL; //// WINDOWS-SPECIFIC CLEANUP #ifndef __WXMICROWIN__ wxSetKeyboardHook(FALSE); #endif #if wxUSE_PENWINDOWS wxCleanUpPenWin(); #endif if (wxSTD_FRAME_ICON) DestroyIcon(wxSTD_FRAME_ICON); if (wxSTD_MDICHILDFRAME_ICON) DestroyIcon(wxSTD_MDICHILDFRAME_ICON); if (wxSTD_MDIPARENTFRAME_ICON) DestroyIcon(wxSTD_MDIPARENTFRAME_ICON); if (wxDEFAULT_FRAME_ICON) DestroyIcon(wxDEFAULT_FRAME_ICON); if (wxDEFAULT_MDICHILDFRAME_ICON) DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON); if (wxDEFAULT_MDIPARENTFRAME_ICON) DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON); if ( wxDisableButtonBrush ) ::DeleteObject( wxDisableButtonBrush ); #if wxUSE_OLE ::OleUninitialize(); #endif #ifdef WXMAKINGDLL // for an EXE the classes are unregistered when it terminates but DLL may // be loaded several times (load/unload/load) into the same process in // which case the registration will fail after the first time if we don't // unregister the classes now UnregisterWindowClasses(); #endif // WXMAKINGDLL #if wxUSE_CTL3D Ctl3dUnregister(wxhInstance); #endif delete wxWinHandleHash; // GL: I'm annoyed ... I don't know where to put this and I don't want to // create a module for that as it's part of the core. delete wxPendingEvents; #if wxUSE_THREADS delete wxPendingEventsLocker; // If we don't do the following, we get an apparent memory leak #if wxUSE_VALIDATORS ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker(); #endif // wxUSE_VALIDATORS #endif // wxUSE_THREADS wxClassInfo::CleanUpClasses(); delete wxTheApp; wxTheApp = NULL; #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT // At this point we want to check if there are any memory // blocks that aren't part of the wxDebugContext itself, // as a special case. Then when dumping we need to ignore // wxDebugContext, too. if (wxDebugContext::CountObjectsLeft(TRUE) > 0) { wxLogMessage(wxT("There were memory leaks.")); wxDebugContext::Dump(); wxDebugContext::PrintStatistics(); } // wxDebugContext::SetStream(NULL, NULL); #endif #if wxUSE_LOG // do it as the very last thing because everything else can log messages delete wxLog::SetActiveTarget(NULL); #endif // wxUSE_LOG } //---------------------------------------------------------------------- // Entry point helpers, used by wxPython //---------------------------------------------------------------------- int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) ) { return wxApp::Initialize(); } int WXDLLEXPORT wxEntryInitGui() { return wxTheApp->OnInitGui(); } void WXDLLEXPORT wxEntryCleanup() { wxApp::CleanUp(); } #if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL)) // temporarily disable this warning which would be generated in release builds // because of __try #ifdef __VISUALC__ #pragma warning(disable: 4715) // not all control paths return a value #endif // Visual C++ //---------------------------------------------------------------------- // Main wxWindows entry point //---------------------------------------------------------------------- int wxEntry(WXHINSTANCE hInstance, WXHINSTANCE WXUNUSED(hPrevInstance), char *lpCmdLine, int nCmdShow, bool enterLoop) { // do check for memory leaks on program exit // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free // deallocated memory which may be used to simulate low-memory condition) #ifndef __WXMICROWIN__ wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF); #endif #ifdef __MWERKS__ #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT // This seems to be necessary since there are 'rogue' // objects present at this point (perhaps global objects?) // Setting a checkpoint will ignore them as far as the // memory checking facility is concerned. // Of course you may argue that memory allocated in globals should be // checked, but this is a reasonable compromise. wxDebugContext::SetCheckpoint(); #endif #endif // take everything into a try-except block to be able to call // OnFatalException() if necessary #if wxUSE_ON_FATAL_EXCEPTION __try { #endif wxhInstance = (HINSTANCE) hInstance; if (!wxEntryStart(0,0)) return 0; // create the application object or ensure that one already exists if (!wxTheApp) { // The app may have declared a global application object, but we recommend // the IMPLEMENT_APP macro is used instead, which sets an initializer // function for delayed, dynamic app object construction. wxCHECK_MSG( wxApp::GetInitializerFunction(), 0, wxT("No initializer - use IMPLEMENT_APP macro.") ); wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) (); } wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") ); // save the WinMain() parameters if (lpCmdLine) // MicroWindows passes NULL wxTheApp->ConvertToStandardCommandArgs(lpCmdLine); wxTheApp->m_nCmdShow = nCmdShow; // We really don't want timestamps by default, because it means // we can't simply double-click on the error message and get to that // line in the source. So VC++ at least, let's have a sensible default. #ifdef __VISUALC__ wxLog::SetTimestamp(NULL); #endif // init the app int retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1; if ( retValue == 0 ) { if ( enterLoop ) { // run the main loop wxTheApp->OnRun(); } else { // we want to initialize, but not run or exit immediately. return 1; } } //else: app initialization failed, so we skipped OnRun() wxWindow *topWindow = wxTheApp->GetTopWindow(); if ( topWindow ) { // Forcibly delete the window. if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) || topWindow->IsKindOf(CLASSINFO(wxDialog)) ) { topWindow->Close(TRUE); wxTheApp->DeletePendingObjects(); } else { delete topWindow; wxTheApp->SetTopWindow(NULL); } } retValue = wxTheApp->OnExit(); wxEntryCleanup(); return retValue; #if wxUSE_ON_FATAL_EXCEPTION } __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER : EXCEPTION_CONTINUE_SEARCH ) { if ( wxTheApp ) { // give the user a chance to do something special about this wxTheApp->OnFatalException(); } ::ExitProcess(3); // the same exit code as abort() // NOTREACHED } #endif // wxUSE_ON_FATAL_EXCEPTION } // restore warning state #ifdef __VISUALC__ #pragma warning(default: 4715) // not all control paths return a value #endif // Visual C++ #else /* _WINDLL */ //---------------------------------------------------------------------- // Entry point for wxWindows + the App in a DLL //---------------------------------------------------------------------- int wxEntry(WXHINSTANCE hInstance) { wxhInstance = (HINSTANCE) hInstance; wxEntryStart(0, 0); // The app may have declared a global application object, but we recommend // the IMPLEMENT_APP macro is used instead, which sets an initializer function // for delayed, dynamic app object construction. if (!wxTheApp) { wxCHECK_MSG( wxApp::GetInitializerFunction(), 0, "No initializer - use IMPLEMENT_APP macro." ); wxTheApp = (* wxApp::GetInitializerFunction()) (); } wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" ); wxTheApp->argc = 0; wxTheApp->argv = NULL; wxEntryInitGui(); wxTheApp->OnInit(); wxWindow *topWindow = wxTheApp->GetTopWindow(); if ( topWindow && topWindow->GetHWND()) { topWindow->Show(TRUE); } return 1; } #endif // _WINDLL //// Static member initialization wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL; wxApp::wxApp() { argc = 0; argv = NULL; m_printMode = wxPRINT_WINDOWS; m_auto3D = TRUE; } wxApp::~wxApp() { // Delete command-line args int i; for (i = 0; i < argc; i++) { delete[] argv[i]; } delete[] argv; } bool wxApp::Initialized() { #ifndef _WINDLL if (GetTopWindow()) return TRUE; else return FALSE; #else // Assume initialized if DLL (no way of telling) return TRUE; #endif } /* * Get and process a message, returning FALSE if WM_QUIT * received (and also set the flag telling the app to exit the main loop) * */ bool wxApp::DoMessage() { BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0); if ( rc == 0 ) { // got WM_QUIT m_keepGoing = FALSE; return FALSE; } else if ( rc == -1 ) { // should never happen, but let's test for it nevertheless wxLogLastError(wxT("GetMessage")); } else { #if wxUSE_THREADS wxASSERT_MSG( wxThread::IsMain(), wxT("only the main thread can process Windows messages") ); static bool s_hadGuiLock = TRUE; static wxMsgArray s_aSavedMessages; // if a secondary thread owns is doing GUI calls, save all messages for // later processing - we can't process them right now because it will // lead to recursive library calls (and we're not reentrant) if ( !wxGuiOwnedByMainThread() ) { s_hadGuiLock = FALSE; // leave out WM_COMMAND messages: too dangerous, sometimes // the message will be processed twice if ( !wxIsWaitingForThread() || s_currentMsg.message != WM_COMMAND ) { s_aSavedMessages.Add(s_currentMsg); } return TRUE; } else { // have we just regained the GUI lock? if so, post all of the saved // messages // // FIXME of course, it's not _exactly_ the same as processing the // messages normally - expect some things to break... if ( !s_hadGuiLock ) { s_hadGuiLock = TRUE; size_t count = s_aSavedMessages.GetCount(); for ( size_t n = 0; n < count; n++ ) { MSG& msg = s_aSavedMessages[n]; DoMessage((WXMSG *)&msg); } s_aSavedMessages.Empty(); } } #endif // wxUSE_THREADS // Process the message DoMessage((WXMSG *)&s_currentMsg); } return TRUE; } void wxApp::DoMessage(WXMSG *pMsg) { if ( !ProcessMessage(pMsg) ) { ::TranslateMessage((MSG *)pMsg); ::DispatchMessage((MSG *)pMsg); } } /* * Keep trying to process messages until WM_QUIT * received. * * If there are messages to be processed, they will all be * processed and OnIdle will not be called. * When there are no more messages, OnIdle is called. * If OnIdle requests more time, * it will be repeatedly called so long as there are no pending messages. * A 'feature' of this is that once OnIdle has decided that no more processing * is required, then it won't get processing time until further messages * are processed (it'll sit in DoMessage). */ int wxApp::MainLoop() { m_keepGoing = TRUE; while ( m_keepGoing ) { #if wxUSE_THREADS wxMutexGuiLeaveOrEnter(); #endif // wxUSE_THREADS while ( !Pending() && ProcessIdle() ) ; // a message came or no more idle processing to do DoMessage(); } return s_currentMsg.wParam; } // Returns TRUE if more time is needed. bool wxApp::ProcessIdle() { wxIdleEvent event; event.SetEventObject(this); ProcessEvent(event); return event.MoreRequested(); } void wxApp::ExitMainLoop() { // this will set m_keepGoing to FALSE a bit later ::PostQuitMessage(0); } bool wxApp::Pending() { return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0; } void wxApp::Dispatch() { DoMessage(); } /* * Give all windows a chance to preprocess * the message. Some may have accelerator tables, or have * MDI complications. */ bool wxApp::ProcessMessage(WXMSG *wxmsg) { MSG *msg = (MSG *)wxmsg; HWND hwnd = msg->hwnd; wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hwnd); // this may happen if the event occured in a standard modeless dialog (the // only example of which I know of is the find/replace dialog) - then call // IsDialogMessage() to make TAB navigation in it work if ( !wndThis ) { // we need to find the dialog containing this control as // IsDialogMessage() just eats all the messages (i.e. returns TRUE for // them) if we call it for the control itself while ( hwnd && ::GetWindowLong(hwnd, GWL_STYLE) & WS_CHILD ) { hwnd = ::GetParent(hwnd); } return hwnd && ::IsDialogMessage(hwnd, msg) != 0; } #if wxUSE_TOOLTIPS // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to // popup the tooltip bubbles if ( (msg->message == WM_MOUSEMOVE) ) { wxToolTip *tt = wndThis->GetToolTip(); if ( tt ) { tt->RelayEvent(wxmsg); } } #endif // wxUSE_TOOLTIPS // allow the window to prevent certain messages from being // translated/processed (this is currently used by wxTextCtrl to always // grab Ctrl-C/V/X, even if they are also accelerators in some parent) if ( !wndThis->MSWShouldPreProcessMessage(wxmsg) ) { return FALSE; } // try translations first: the accelerators override everything wxWindow *wnd; for ( wnd = wndThis; wnd; wnd = wnd->GetParent() ) { if ( wnd->MSWTranslateMessage(wxmsg)) return TRUE; // stop at first top level window, i.e. don't try to process the key // strokes originating in a dialog using the accelerators of the parent // frame - this doesn't make much sense if ( wnd->IsTopLevel() ) break; } // now try the other hooks (kbd navigation is handled here): we start from // wndThis->GetParent() because wndThis->MSWProcessMessage() was already // called above for ( wnd = wndThis->GetParent(); wnd; wnd = wnd->GetParent() ) { if ( wnd->MSWProcessMessage(wxmsg) ) return TRUE; } // no special preprocessing for this message, dispatch it normally return FALSE; } // this is a temporary hack and will be replaced by using wxEventLoop in the // future // // it is needed to allow other event loops (currently only one: the modal // dialog one) to reset the OnIdle() semaphore because otherwise OnIdle() // wouldn't do anything while a modal dialog shown from OnIdle() call is shown. bool wxIsInOnIdleFlag = FALSE; void wxApp::OnIdle(wxIdleEvent& event) { // Avoid recursion (via ProcessEvent default case) if ( wxIsInOnIdleFlag ) return; wxIsInOnIdleFlag = TRUE; // If there are pending events, we must process them: pending events // are either events to the threads other than main or events posted // with wxPostEvent() functions // GRG: I have moved this here so that all pending events are processed // before starting to delete any objects. This behaves better (in // particular, wrt wxPostEvent) and is coherent with wxGTK's current // behaviour. Changed Feb/2000 before 2.1.14 ProcessPendingEvents(); // 'Garbage' collection of windows deleted with Close(). DeletePendingObjects(); #if wxUSE_LOG // flush the logged messages if any wxLog::FlushActive(); #endif // wxUSE_LOG #if wxUSE_DC_CACHEING // automated DC cache management: clear the cached DCs and bitmap // if it's likely that the app has finished with them, that is, we // get an idle event and we're not dragging anything. if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON)) wxDC::ClearCache(); #endif // wxUSE_DC_CACHEING // Send OnIdle events to all windows if ( SendIdleEvents() ) { // SendIdleEvents() returns TRUE if at least one window requested more // idle events event.RequestMore(TRUE); } wxIsInOnIdleFlag = FALSE; } // Send idle event to all top-level windows bool wxApp::SendIdleEvents() { bool needMore = FALSE; wxWindowList::Node* node = wxTopLevelWindows.GetFirst(); while (node) { wxWindow* win = node->GetData(); if (SendIdleEvents(win)) needMore = TRUE; node = node->GetNext(); } return needMore; } // Send idle event to window and all subwindows bool wxApp::SendIdleEvents(wxWindow* win) { bool needMore = FALSE; wxIdleEvent event; event.SetEventObject(win); win->GetEventHandler()->ProcessEvent(event); if (event.MoreRequested()) needMore = TRUE; wxNode* node = win->GetChildren().First(); while (node) { wxWindow* win = (wxWindow*) node->Data(); if (SendIdleEvents(win)) needMore = TRUE; node = node->Next(); } return needMore; } void wxApp::DeletePendingObjects() { wxNode *node = wxPendingDelete.First(); while (node) { wxObject *obj = (wxObject *)node->Data(); delete obj; if (wxPendingDelete.Member(obj)) delete node; // Deleting one object may have deleted other pending // objects, so start from beginning of list again. node = wxPendingDelete.First(); } } void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event)) { if (GetTopWindow()) GetTopWindow()->Close(TRUE); } // Default behaviour: close the application with prompts. The // user can veto the close, and therefore the end session. void wxApp::OnQueryEndSession(wxCloseEvent& event) { if (GetTopWindow()) { if (!GetTopWindow()->Close(!event.CanVeto())) event.Veto(TRUE); } } /* static */ int wxApp::GetComCtl32Version() { #ifdef __WXMICROWIN__ return 0; #else // cache the result static int s_verComCtl32 = -1; wxCRIT_SECT_DECLARE(csComCtl32); wxCRIT_SECT_LOCKER(lock, csComCtl32); if ( s_verComCtl32 == -1 ) { // initally assume no comctl32.dll at all s_verComCtl32 = 0; // do we have it? HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32")); // if so, then we can check for the version if ( hModuleComCtl32 ) { // try to use DllGetVersion() if available in _headers_ #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC) ::GetProcAddress(hModuleComCtl32, "DllGetVersion"); if ( pfnDllGetVersion ) { DLLVERSIONINFO dvi; dvi.cbSize = sizeof(dvi); HRESULT hr = (*pfnDllGetVersion)(&dvi); if ( FAILED(hr) ) { wxLogApiError(_T("DllGetVersion"), hr); } else { // this is incompatible with _WIN32_IE values, but // compatible with the other values returned by // GetComCtl32Version() s_verComCtl32 = 100*dvi.dwMajorVersion + dvi.dwMinorVersion; } } #endif // DllGetVersion() unavailable either during compile or // run-time, try to guess the version otherwise if ( !s_verComCtl32 ) { // InitCommonControlsEx is unique to 4.70 and later FARPROC theProc = ::GetProcAddress ( hModuleComCtl32, "InitCommonControlsEx" ); if ( !theProc ) { // not found, must be 4.00 s_verComCtl32 = 400; } else { // many symbols appeared in comctl32 4.71, could use // any of them except may be DllInstall theProc = ::GetProcAddress ( hModuleComCtl32, "InitializeFlatSB" ); if ( !theProc ) { // not found, must be 4.70 s_verComCtl32 = 470; } else { // found, must be 4.71 s_verComCtl32 = 471; } } } } } return s_verComCtl32; #endif } void wxExit() { wxLogError(_("Fatal error: exiting")); wxApp::CleanUp(); exit(0); } // Yield to incoming messages bool wxApp::Yield(bool onlyIfNeeded) { // MT-FIXME static bool s_inYield = FALSE; // disable log flushing from here because a call to wxYield() shouldn't // normally result in message boxes popping up &c wxLog::Suspend(); if ( s_inYield ) { if ( !onlyIfNeeded ) { wxFAIL_MSG( wxT("wxYield called recursively" ) ); } return FALSE; } s_inYield = TRUE; // we don't want to process WM_QUIT from here - it should be processed in // the main event loop in order to stop it MSG msg; while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT ) { #if wxUSE_THREADS wxMutexGuiLeaveOrEnter(); #endif // wxUSE_THREADS if ( !wxTheApp->DoMessage() ) break; } // if there are pending events, we must process them. ProcessPendingEvents(); // let the logs be flashed again wxLog::Resume(); s_inYield = FALSE; return TRUE; } bool wxHandleFatalExceptions(bool doit) { #if wxUSE_ON_FATAL_EXCEPTION // assume this can only be called from the main thread gs_handleExceptions = doit; return TRUE; #else wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to use this function")); (void)doit; return FALSE; #endif } //----------------------------------------------------------------------------- // wxWakeUpIdle //----------------------------------------------------------------------------- void wxWakeUpIdle() { // Send the top window a dummy message so idle handler processing will // start up again. Doing it this way ensures that the idle handler // wakes up in the right thread (see also wxWakeUpMainThread() which does // the same for the main app thread only) wxWindow *topWindow = wxTheApp->GetTopWindow(); if ( topWindow ) { if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) ) { // should never happen wxLogLastError(wxT("PostMessage(WM_NULL)")); } } } //----------------------------------------------------------------------------- // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly // if in a separate file. So include it here to ensure it's linked. #if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL)) #include "main.cpp" #endif