X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/837e57436a89516a5fa9f478f401e06bd872c17c..c944775f72435d2c0493113e05445898ab8baf1b:/src/msw/app.cpp diff --git a/src/msw/app.cpp b/src/msw/app.cpp index 944714414d..537b447d18 100644 --- a/src/msw/app.cpp +++ b/src/msw/app.cpp @@ -1,12 +1,12 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: app.cpp +// Name: src/msw/app.cpp // Purpose: wxApp // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id$ -// Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Copyright: (c) Julian Smart +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// // =========================================================================== @@ -17,10 +17,6 @@ // headers // --------------------------------------------------------------------------- -#ifdef __GNUG__ - #pragma implementation "app.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -29,6 +25,8 @@ #endif #ifndef WX_PRECOMP + #include "wx/msw/wrapcctl.h" + #include "wx/dynarray.h" #include "wx/frame.h" #include "wx/app.h" #include "wx/utils.h" @@ -42,37 +40,37 @@ #include "wx/dialog.h" #include "wx/msgdlg.h" #include "wx/intl.h" - #include "wx/dynarray.h" - #include "wx/wxchar.h" + #include "wx/crt.h" + #include "wx/log.h" + #include "wx/module.h" #endif -#include "wx/log.h" -#include "wx/module.h" +#include "wx/apptrait.h" +#include "wx/filename.h" +#include "wx/dynlib.h" +#include "wx/evtloop.h" #include "wx/msw/private.h" +#include "wx/msw/ole/oleutils.h" +#include "wx/msw/private/timer.h" -#if wxUSE_THREADS - #include "wx/thread.h" - - // define the array of MSG strutures - WX_DECLARE_OBJARRAY(MSG, wxMsgArray); +#if wxUSE_TOOLTIPS + #include "wx/tooltip.h" +#endif // wxUSE_TOOLTIPS - #include "wx/arrimpl.cpp" - - WX_DEFINE_OBJARRAY(wxMsgArray); -#endif // wxUSE_THREADS - -#if wxUSE_WX_RESOURCES - #include "wx/resource.h" -#endif - -// OLE is used for drag-and-drop, clipboard, OLE Automation... -#if defined(__GNUWIN32__) || defined(__SC__) || defined(__SALFORDC__) +// 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(__SYMANTEC__) || defined(__SALFORDC__) #undef wxUSE_OLE #define wxUSE_OLE 0 #endif // broken compilers +#if defined(__POCKETPC__) || defined(__SMARTPHONE__) + #include + #include +#endif + #if wxUSE_OLE #include #endif @@ -80,1079 +78,707 @@ #include #include -#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) - #include -#endif +#include "wx/msw/missing.h" + +// instead of including which is not part of the core SDK and not +// shipped at all with other compilers, we always define the parts of it we +// need here ourselves +// +// NB: DLLVER_PLATFORM_WINDOWS will be defined if shlwapi.h had been somehow +// included already +#ifndef DLLVER_PLATFORM_WINDOWS + // hopefully we don't need to change packing as DWORDs should be already + // correctly aligned + struct DLLVERSIONINFO + { + DWORD cbSize; + DWORD dwMajorVersion; // Major version + DWORD dwMinorVersion; // Minor version + DWORD dwBuildNumber; // Build number + DWORD dwPlatformID; // DLLVER_PLATFORM_* + }; -#include "wx/msw/msvcrt.h" + typedef HRESULT (CALLBACK* DLLGETVERSIONPROC)(DLLVERSIONINFO *); +#endif // defined(DLLVERSIONINFO) // --------------------------------------------------------------------------- // global variables // --------------------------------------------------------------------------- -extern wxChar *wxBuffer; -extern wxChar *wxOsVersion; -extern wxList *wxWinHandleList; -extern wxList WXDLLEXPORT wxPendingDelete; -#if wxUSE_THREADS -extern wxList *wxPendingEvents; -extern wxCriticalSection *wxPendingEventsLocker; -#endif +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) extern void wxSetKeyboardHook(bool doIt); -extern wxCursor *g_globalCursor; - -HINSTANCE wxhInstance = 0; -MSG s_currentMsg; -wxApp *wxTheApp = NULL; - -// FIXME why not const? and not static? -wxChar wxFrameClassName[] = _T("wxFrameClass"); -wxChar wxMDIFrameClassName[] = _T("wxMDIFrameClass"); -wxChar wxMDIChildFrameClassName[] = _T("wxMDIChildFrameClass"); -wxChar wxPanelClassName[] = _T("wxPanelClass"); -wxChar wxCanvasClassName[] = _T("wxCanvasClass"); - -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 APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); +#endif -#if defined(__WIN95__) && !defined(__TWIN32__) - #define wxUSE_RICHEDIT 1 +// NB: all "NoRedraw" classes must have the same names as the "normal" classes +// with NR suffix - wxWindow::MSWCreate() supposes this +#ifdef __WXWINCE__ +WXDLLIMPEXP_CORE wxChar *wxCanvasClassName; +WXDLLIMPEXP_CORE wxChar *wxCanvasClassNameNR; #else - #define wxUSE_RICHEDIT 0 +WXDLLIMPEXP_CORE const wxChar *wxCanvasClassName = wxT("wxWindowClass"); +WXDLLIMPEXP_CORE const wxChar *wxCanvasClassNameNR = wxT("wxWindowClassNR"); #endif +WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassName = wxT("wxMDIFrameClass"); +WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR"); +WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass"); +WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR"); -#if wxUSE_RICHEDIT - static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL; -#endif +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- + +LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); // =========================================================================== -// implementation +// wxGUIAppTraits implementation // =========================================================================== -// --------------------------------------------------------------------------- -// wxApp -// --------------------------------------------------------------------------- - -#if !USE_SHARED_LIBRARY - IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler) +// private class which we use to pass parameters from BeforeChildWaitLoop() to +// AfterChildWaitLoop() +struct ChildWaitLoopData +{ + ChildWaitLoopData(wxWindowDisabler *wd_, wxWindow *winActive_) + { + wd = wd_; + winActive = winActive_; + } - BEGIN_EVENT_TABLE(wxApp, wxEvtHandler) - EVT_IDLE(wxApp::OnIdle) - EVT_END_SESSION(wxApp::OnEndSession) - EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession) - END_EVENT_TABLE() -#endif + wxWindowDisabler *wd; + wxWindow *winActive; +}; -//// Initialize -bool wxApp::Initialize() +void *wxGUIAppTraits::BeforeChildWaitLoop() { - // Some people may wish to use this, but - // probably it shouldn't be here by default. -#ifdef __WXDEBUG__ - // wxRedirectIOToConsole(); -#endif + /* + We use a dirty hack here to disable all application windows (which we + must do because otherwise the calls to wxYield() could lead to some very + unexpected reentrancies in the users code) but to avoid losing + focus/activation entirely when the child process terminates which would + happen if we simply disabled everything using wxWindowDisabler. Indeed, + remember that Windows will never activate a disabled window and when the + last childs window is closed and Windows looks for a window to activate + all our windows are still disabled. There is no way to enable them in + time because we don't know when the childs windows are going to be + closed, so the solution we use here is to keep one special tiny frame + enabled all the time. Then when the child terminates it will get + activated and when we close it below -- after reenabling all the other + windows! -- the previously active window becomes activated again and + everything is ok. + */ + wxBeginBusyCursor(); + + // first disable all existing windows + wxWindowDisabler *wd = new wxWindowDisabler; + + // then create an "invisible" frame: it has minimal size, is positioned + // (hopefully) outside the screen and doesn't appear on the taskbar + wxWindow *winActive = new wxFrame + ( + wxTheApp->GetTopWindow(), + wxID_ANY, + wxEmptyString, + wxPoint(32600, 32600), + wxSize(1, 1), + wxDEFAULT_FRAME_STYLE | wxFRAME_NO_TASKBAR + ); + winActive->Show(); + + return new ChildWaitLoopData(wd, winActive); +} - wxBuffer = new wxChar[1500]; // FIXME +void wxGUIAppTraits::AlwaysYield() +{ + wxYield(); +} - wxClassInfo::InitializeClasses(); +void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig) +{ + wxEndBusyCursor(); -#if wxUSE_RESOURCES - wxGetResource(_T("wxWindows"), _T("OsVersion"), &wxOsVersion); -#endif + ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig; - // 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. -#if wxUSE_THREADS - wxPendingEvents = new wxList(); - wxPendingEventsLocker = new wxCriticalSection(); -#endif + delete data->wd; - wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING); - wxTheColourDatabase->Initialize(); + // finally delete the dummy frame and, as wd has been already destroyed and + // the other windows reenabled, the activation is going to return to the + // window which had had it before + data->winActive->Destroy(); - wxInitializeStockLists(); - wxInitializeStockObjects(); + // also delete the temporary data object itself + delete data; +} -#if wxUSE_WX_RESOURCES - wxInitializeResourceSystem(); -#endif +bool wxGUIAppTraits::DoMessageFromThreadWait() +{ + // we should return false only if the app should exit, i.e. only if + // Dispatch() determines that the main event loop should terminate + wxEventLoopBase * const evtLoop = wxEventLoop::GetActive(); + if ( !evtLoop || !evtLoop->Pending() ) + { + // no events means no quit event + return true; + } - wxBitmap::InitStandardHandlers(); + return evtLoop->Dispatch(); +} -#if defined(__WIN95__) - InitCommonControls(); +DWORD wxGUIAppTraits::WaitForThread(WXHANDLE hThread) +{ + // if we don't have a running event loop, we shouldn't wait for the + // messages as we never remove them from the message queue and so we enter + // an infinite loop as MsgWaitForMultipleObjects() keeps returning + // WAIT_OBJECT_0 + 1 + if ( !wxEventLoop::GetActive() ) + return DoSimpleWaitForThread(hThread); + + return ::MsgWaitForMultipleObjects + ( + 1, // number of objects to wait for + (HANDLE *)&hThread, // the objects + false, // wait for any objects, not all + INFINITE, // no timeout + QS_ALLINPUT | // return as soon as there are any events + QS_ALLPOSTMESSAGE + ); +} -#if wxUSE_RICHEDIT - gs_hRichEdit = LoadLibrary(_T("RICHED32.DLL")); +wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const +{ + OSVERSIONINFO info; + wxZeroMemory(info); - if (gs_hRichEdit == (HINSTANCE) NULL) + // on Windows, the toolkit version is the same of the OS version + // as Windows integrates the OS kernel with the GUI toolkit. + info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + if ( ::GetVersionEx(&info) ) { - wxLogError(_("Could not initialise Rich Edit DLL")); + if ( majVer ) + *majVer = info.dwMajorVersion; + if ( minVer ) + *minVer = info.dwMinorVersion; } -#endif // wxUSE_RICHEDIT -#endif // __WIN95__ +#if defined(__WXHANDHELD__) || defined(__WXWINCE__) + return wxPORT_WINCE; +#else + return wxPORT_MSW; +#endif +} - // for OLE, enlarge message queue to be as large as possible - int iMsg = 96; - while (!SetMessageQueue(iMsg) && (iMsg -= 8)); +#if wxUSE_TIMER -#if wxUSE_OLE - // we need to initialize OLE library - if ( FAILED(::OleInitialize(NULL)) ) - wxLogError(_("Cannot initialize OLE")); -#endif +wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer) +{ + return new wxMSWTimerImpl(timer); +} -#if wxUSE_CTL3D - if (!Ctl3dRegister(wxhInstance)) - wxLogError(_T("Cannot register CTL3D")); +#endif // wxUSE_TIMER - Ctl3dAutoSubclass(wxhInstance); -#endif +wxEventLoopBase* wxGUIAppTraits::CreateEventLoop() +{ + return new wxEventLoop; +} + +// =========================================================================== +// wxApp implementation +// =========================================================================== - g_globalCursor = new wxCursor; +int wxApp::m_nCmdShow = SW_SHOWNORMAL; - wxSTD_FRAME_ICON = LoadIcon(wxhInstance, _T("wxSTD_FRAME")); - wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, _T("wxSTD_MDIPARENTFRAME")); - wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, _T("wxSTD_MDICHILDFRAME")); +// --------------------------------------------------------------------------- +// wxWin macros +// --------------------------------------------------------------------------- - wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, _T("wxDEFAULT_FRAME")); - wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, _T("wxDEFAULT_MDIPARENTFRAME")); - wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, _T("wxDEFAULT_MDICHILDFRAME")); +IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler) - RegisterWindowClasses(); +BEGIN_EVENT_TABLE(wxApp, wxEvtHandler) + EVT_IDLE(wxApp::OnIdle) + EVT_END_SESSION(wxApp::OnEndSession) + EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession) +END_EVENT_TABLE() + +// class to ensure that wxAppBase::CleanUp() is called if our Initialize() +// fails +class wxCallBaseCleanup +{ +public: + wxCallBaseCleanup(wxApp *app) : m_app(app) { } + ~wxCallBaseCleanup() { if ( m_app ) m_app->wxAppBase::CleanUp(); } + + void Dismiss() { m_app = NULL; } - // Create the brush for disabling bitmap buttons +private: + wxApp *m_app; +}; - LOGBRUSH lb; - lb.lbStyle = BS_PATTERN; - lb.lbHatch = (int)LoadBitmap( wxhInstance, _T("wxDISABLE_BUTTON_BITMAP") ); - if ( lb.lbHatch ) +//// Initialize +bool wxApp::Initialize(int& argc, wxChar **argv) +{ + if ( !wxAppBase::Initialize(argc, argv) ) + return false; + + // ensure that base cleanup is done if we return too early + wxCallBaseCleanup callBaseCleanup(this); + +#ifdef __WXWINCE__ + wxString tmp = GetAppName(); + tmp += wxT("ClassName"); + wxCanvasClassName = wxStrdup( tmp.wc_str() ); + tmp += wxT("NR"); + wxCanvasClassNameNR = wxStrdup( tmp.wc_str() ); + HWND hWnd = FindWindow( wxCanvasClassNameNR, NULL ); + if (hWnd) { - wxDisableButtonBrush = ::CreateBrushIndirect( & lb ); - ::DeleteObject( (HGDIOBJ)lb.lbHatch ); + SetForegroundWindow( (HWND)(((DWORD)hWnd)|0x01) ); + return false; } - //else: wxWindows resources are probably not linked in +#endif + +#if !defined(__WXMICROWIN__) + InitCommonControls(); +#endif // !defined(__WXMICROWIN__) + +#if defined(__SMARTPHONE__) || defined(__POCKETPC__) + SHInitExtraControls(); +#endif -#if wxUSE_PENWINDOWS - wxRegisterPenWin(); +#ifndef __WXWINCE__ + // Don't show a message box if a function such as SHGetFileInfo + // fails to find a device. + SetErrorMode(SEM_FAILCRITICALERRORS|SEM_NOOPENFILEERRORBOX); #endif - wxWinHandleList = new wxList(wxKEY_INTEGER); + wxOleInitialize(); + + RegisterWindowClasses(); + + 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(WXMAKINGDLL) - extern char wxDummyChar; - if (wxDummyChar) wxDummyChar++; +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) + wxSetKeyboardHook(true); #endif - wxSetKeyboardHook(TRUE); + callBaseCleanup.Dismiss(); - wxModule::RegisterModules(); - if (!wxModule::InitializeModules()) - return FALSE; - return TRUE; + 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.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS; wndclass.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass.cbClsExtra = 0; - wndclass.cbWndExtra = sizeof( DWORD ); // what is this DWORD used for? wndclass.hInstance = wxhInstance; - wndclass.hIcon = (HICON) NULL; wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW); - wndclass.lpszMenuName = NULL; - // Register the frame window class. - wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1); -#ifdef _MULTIPLE_INSTANCES - sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance ); -#endif - wndclass.lpszClassName = wxFrameClassName; + // register the class for all normal windows + wndclass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); + wndclass.lpszClassName = wxCanvasClassName; + wndclass.style = styleNormal; if ( !RegisterClass(&wndclass) ) { - wxLogLastError("RegisterClass(frame)"); + wxLogLastError(wxT("RegisterClass(frame)")); + } + + // "no redraw" frame + wndclass.lpszClassName = wxCanvasClassNameNR; + wndclass.style = styleNoRedraw; - return FALSE; + 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("RegisterClass(MDI parent)"); - - return FALSE; + wxLogLastError(wxT("RegisterClass(MDI parent)")); } - // Register the MDI child frame window class. - wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); - wndclass.lpszClassName = wxMDIChildFrameClassName; + // "no redraw" MDI frame + wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw; + wndclass.style = styleNoRedraw; if ( !RegisterClass(&wndclass) ) { - wxLogLastError("RegisterClass(MDI child)"); - - return FALSE; + wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)")); } - // Register the panel window class. - wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH ); - wndclass.lpszClassName = wxPanelClassName; + // Register the MDI child frame window class. + wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); + wndclass.lpszClassName = wxMDIChildFrameClassName; + wndclass.style = styleNormal; if ( !RegisterClass(&wndclass) ) { - wxLogLastError("RegisterClass(panel)"); - - return FALSE; + wxLogLastError(wxT("RegisterClass(MDI child)")); } - // Register the canvas and textsubwindow class name - wndclass.hbrBackground = (HBRUSH)NULL; - wndclass.lpszClassName = wxCanvasClassName; + // "no redraw" MDI child frame + wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw; + wndclass.style = styleNoRedraw; if ( !RegisterClass(&wndclass) ) { - wxLogLastError("RegisterClass(canvas)"); - - return FALSE; + wxLogLastError(wxT("RegisterClass(no redraw MDI child)")); } - return TRUE; + return true; } // --------------------------------------------------------------------------- -// Convert Windows to argc, argv style +// UnregisterWindowClasses // --------------------------------------------------------------------------- -void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine) +bool wxApp::UnregisterWindowClasses() { - wxStringList args; + bool retval = true; - wxString cmdLine(lpCmdLine); - int count = 0; +#ifndef __WXMICROWIN__ + // MDI frame window class. + if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) ) + { + wxLogLastError(wxT("UnregisterClass(MDI parent)")); - // Get application name - wxChar name[260]; // 260 is MAX_PATH value from windef.h - ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name)); + retval = false; + } - args.Add(name); - count++; + // "no redraw" MDI frame + if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) ) + { + wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)")); - wxStrcpy(name, wxFileNameFromPath(name)); - wxStripExtension(name); - wxTheApp->SetAppName(name); + retval = false; + } - // Break up string - // Treat strings enclosed in double-quotes as single arguments - int i = 0; - int len = cmdLine.Length(); - while (i < len) + // MDI child frame window class. + if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) ) { - // Skip whitespace - while ((i < len) && wxIsspace(cmdLine.GetChar(i))) - i ++; - - if (i < len) - { - if (cmdLine.GetChar(i) == _T('"')) // We found the start of a string - { - i ++; - int first = i; - while ((i < len) && (cmdLine.GetChar(i) != _T('"'))) - i ++; + wxLogLastError(wxT("UnregisterClass(MDI child)")); - wxString arg(cmdLine.Mid(first, (i - first))); + retval = false; + } - args.Add(arg); - count ++; + // "no redraw" MDI child frame + if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) ) + { + wxLogLastError(wxT("UnregisterClass(no redraw MDI child)")); - if (i < len) - i ++; // Skip past 2nd quote - } - else // Unquoted argument - { - int first = i; - while ((i < len) && !wxIsspace(cmdLine.GetChar(i))) - i ++; + retval = false; + } - wxString arg(cmdLine.Mid(first, (i - first))); + // canvas class name + if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) ) + { + wxLogLastError(wxT("UnregisterClass(canvas)")); - args.Add(arg); - count ++; - } - } + retval = false; } - wxTheApp->argv = new wxChar*[count + 1]; - for (i = 0; i < count; i++) + if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) ) { - wxString arg(args[i]); - wxTheApp->argv[i] = copystring((const wxChar*)arg); + wxLogLastError(wxT("UnregisterClass(no redraw canvas)")); + + retval = false; } - wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list - wxTheApp->argc = count; -} +#endif // __WXMICROWIN__ -//// Cleans up any wxWindows internal structures left lying around + return retval; +} 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 - - // Indicate that the cursor can be freed, so that cursor won't be deleted - // by deleting the bitmap list before g_globalCursor goes out of scope - // (double deletion of the cursor). - wxSetCursor(wxNullCursor); - delete g_globalCursor; - g_globalCursor = NULL; - - wxDeleteStockObjects(); - - // Destroy all GDI lists, etc. - wxDeleteStockLists(); - - delete wxTheColourDatabase; - wxTheColourDatabase = NULL; - - wxBitmap::CleanUpHandlers(); - - delete[] wxBuffer; - wxBuffer = NULL; - - //// WINDOWS-SPECIFIC CLEANUP - - wxSetKeyboardHook(FALSE); - -#ifdef __WIN95__ - -#if wxUSE_RICHEDIT - if (gs_hRichEdit != (HINSTANCE) NULL) - FreeLibrary(gs_hRichEdit); -#endif - -#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); + // all objects pending for deletion must be deleted first, otherwise we + // would crash when they use wxWinHandleHash (and UnregisterWindowClasses() + // call wouldn't succeed as long as any windows still exist), so call the + // base class method first and only then do our clean up + wxAppBase::CleanUp(); - 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(); +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) + wxSetKeyboardHook(false); #endif -#if wxUSE_CTL3D - Ctl3dUnregister(wxhInstance); -#endif - - if (wxWinHandleList) - delete wxWinHandleList; - - // 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. -#if wxUSE_THREADS - delete wxPendingEvents; - delete wxPendingEventsLocker; - // If we don't do the following, we get an apparent memory leak. - ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker(); -#endif + wxOleUninitialize(); - wxClassInfo::CleanUpClasses(); + // 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(); - delete wxTheApp; - wxTheApp = NULL; + delete wxWinHandleHash; + wxWinHandleHash = 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) - { - wxLogDebug(_T("There were memory leaks.")); - wxDebugContext::Dump(); - wxDebugContext::PrintStatistics(); - } - // wxDebugContext::SetStream(NULL, NULL); +#ifdef __WXWINCE__ + free( wxCanvasClassName ); + free( wxCanvasClassNameNR ); #endif - -#if wxUSE_LOG - // do it as the very last thing because everything else can log messages - delete wxLog::SetActiveTarget(NULL); -#endif // wxUSE_LOG } -#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++ +// ---------------------------------------------------------------------------- +// wxApp ctor/dtor +// ---------------------------------------------------------------------------- -//// Main wxWindows entry point -int wxEntry(WXHINSTANCE hInstance, - WXHINSTANCE WXUNUSED(hPrevInstance), - char *lpCmdLine, - int nCmdShow, - bool enterLoop) +wxApp::wxApp() { - // 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) - wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF); - - // take everything into a try-except block in release build - // FIXME other compilers must support Win32 SEH (structured exception - // handling) too, just find the appropriate keyword in their docs! - // Please note that it's _not_ the same as C++ exceptions! -#if !defined(__WXDEBUG__) && defined(__VISUALC__) - #define CATCH_PROGRAM_EXCEPTIONS - - __try { -#else - #undef CATCH_PROGRAM_EXCEPTIONS -#endif - - wxhInstance = (HINSTANCE) hInstance; - - if (!wxApp::Initialize()) - 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, - _T("No initializer - use IMPLEMENT_APP macro.") ); - - wxTheApp = (*wxApp::GetInitializerFunction()) (); - } - - wxCHECK_MSG( wxTheApp, 0, _T("You have to define an instance of wxApp!") ); - - // save the WinMain() parameters - wxTheApp->ConvertToStandardCommandArgs(lpCmdLine); - wxTheApp->m_nCmdShow = nCmdShow; - - // GUI-specific initialisation. In fact on Windows we don't have any, - // but this call is provided for compatibility across platforms. - wxTheApp->OnInitGui(); - - int retValue = 0; - - if ( wxTheApp->OnInit() ) - { - if ( enterLoop ) - { - retValue = 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); - } - } - - wxTheApp->OnExit(); - - wxApp::CleanUp(); - - return retValue; - -#ifdef CATCH_PROGRAM_EXCEPTIONS - } - __except ( EXCEPTION_EXECUTE_HANDLER ) { - /* - if ( wxTheApp ) - wxTheApp->OnFatalException(); - */ - - // using wxLog would be unsafe here - ::MessageBox(NULL, - _("Unrecoverable program error detected: " - " the application will terminate."), - _("Fatal Error"), - MB_APPLMODAL | MB_ICONSTOP | MB_OK); - - ::ExitProcess(3); // the same exit code as abort() - - // NOTREACHED - } -#endif // CATCH_PROGRAM_EXCEPTIONS + m_printMode = wxPRINT_WINDOWS; } -// restore warning state -#ifdef __VISUALC__ - #pragma warning(default: 4715) // not all control paths return a value -#endif // Visual C++ - -#else /* _WINDLL */ - -//// Entry point for DLLs - -int wxEntry(WXHINSTANCE hInstance) +wxApp::~wxApp() { - wxhInstance = (HINSTANCE) hInstance; - wxApp::Initialize(); - - // 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; +} - wxTheApp->OnInitGui(); +// ---------------------------------------------------------------------------- +// wxApp idle handling +// ---------------------------------------------------------------------------- - wxTheApp->OnInit(); +void wxApp::OnIdle(wxIdleEvent& WXUNUSED(event)) +{ +#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 +} +void wxApp::WakeUpIdle() +{ + // 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 && topWindow->GetHWND()) + if ( topWindow ) { - topWindow->Show(TRUE); + if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) ) + { + // should never happen + wxLogLastError(wxT("PostMessage(WM_NULL)")); + } } - - return 1; } -#endif // _WINDLL - -//// Static member initialization -wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL; +// ---------------------------------------------------------------------------- +// other wxApp event hanlders +// ---------------------------------------------------------------------------- -wxApp::wxApp() +void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event)) { - m_topWindow = NULL; - wxTheApp = this; - m_wantDebugOutput = TRUE; - - argc = 0; - argv = NULL; - m_printMode = wxPRINT_WINDOWS; - m_exitOnFrameDelete = TRUE; - m_auto3D = TRUE; + if (GetTopWindow()) + GetTopWindow()->Close(true); } -wxApp::~wxApp() +// Default behaviour: close the application with prompts. The +// user can veto the close, and therefore the end session. +void wxApp::OnQueryEndSession(wxCloseEvent& event) { - // Delete command-line args - int i; - for (i = 0; i < argc; i++) + if (GetTopWindow()) { - delete[] argv[i]; + if (!GetTopWindow()->Close(!event.CanVeto())) + event.Veto(true); } - delete[] argv; } -bool wxApp::Initialized() -{ -#ifndef _WINDLL - if (GetTopWindow()) - return TRUE; - else - return FALSE; -#endif -#ifdef _WINDLL // Assume initialized if DLL (no way of telling) - return TRUE; -#endif -} +// ---------------------------------------------------------------------------- +// miscellaneous +// ---------------------------------------------------------------------------- -/* - * 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() +/* static */ +int wxApp::GetComCtl32Version() { - BOOL rc = ::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0); - if ( rc == 0 ) - { - // got WM_QUIT - m_keepGoing = FALSE; +#if defined(__WXMICROWIN__) || defined(__WXWINCE__) + return 0; +#else + // cache the result + // + // NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice, + // but as its value should be the same both times it doesn't matter + static int s_verComCtl32 = -1; - return FALSE; - } - else if ( rc == -1 ) + if ( s_verComCtl32 == -1 ) { - // should never happen, but let's test for it nevertheless - wxLogLastError("GetMessage"); - } - else - { -#if wxUSE_THREADS - wxASSERT_MSG( wxThread::IsMain(), - _T("only the main thread can process Windows messages") ); + // initally assume no comctl32.dll at all + s_verComCtl32 = 0; - static bool s_hadGuiLock = TRUE; - static wxMsgArray s_aSavedMessages; + // we're prepared to handle the errors + wxLogNull noLog; - // 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); - } +#if wxUSE_DYNLIB_CLASS + // do we have it? + wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM); - return TRUE; - } - else + // if so, then we can check for the version + if ( dllComCtl32.IsLoaded() ) { - // 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 ) + // now check if the function is available during run-time + wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dllComCtl32 ); + if ( pfnDllGetVersion ) { - s_hadGuiLock = TRUE; + DLLVERSIONINFO dvi; + dvi.cbSize = sizeof(dvi); - size_t count = s_aSavedMessages.Count(); - for ( size_t n = 0; n < count; n++ ) + HRESULT hr = (*pfnDllGetVersion)(&dvi); + if ( FAILED(hr) ) + { + wxLogApiError(_T("DllGetVersion"), hr); + } + else { - MSG& msg = s_aSavedMessages[n]; + // this is incompatible with _WIN32_IE values, but + // compatible with the other values returned by + // GetComCtl32Version() + s_verComCtl32 = 100*dvi.dwMajorVersion + + dvi.dwMinorVersion; + } + } - if ( !ProcessMessage((WXMSG *)&msg) ) + // if DllGetVersion() is unavailable either during compile or + // run-time, try to guess the version otherwise + if ( !s_verComCtl32 ) + { + // InitCommonControlsEx is unique to 4.70 and later + void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx")); + if ( !pfn ) + { + // not found, must be 4.00 + s_verComCtl32 = 400; + } + else // 4.70+ + { + // many symbols appeared in comctl32 4.71, could use any of + // them except may be DllInstall() + pfn = dllComCtl32.GetSymbol(_T("InitializeFlatSB")); + if ( !pfn ) + { + // not found, must be 4.70 + s_verComCtl32 = 470; + } + else { - ::TranslateMessage(&msg); - ::DispatchMessage(&msg); + // found, must be 4.71 or later + s_verComCtl32 = 471; } } - - s_aSavedMessages.Empty(); } } -#endif // wxUSE_THREADS - - // Process the message - if ( !ProcessMessage((WXMSG *)&s_currentMsg) ) - { - ::TranslateMessage(&s_currentMsg); - ::DispatchMessage(&s_currentMsg); - } - } - - return TRUE; -} - -/* - * 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 ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) && - ProcessIdle() ) - { - } - - - 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(); -} - -#if wxUSE_THREADS -void wxApp::ProcessPendingEvents() -{ - wxNode *node = wxPendingEvents->First(); - wxCriticalSectionLocker locker(*wxPendingEventsLocker); - - while (node) - { - wxEvtHandler *handler = (wxEvtHandler *)node->Data(); - - handler->ProcessPendingEvents(); - - delete node; - node = wxPendingEvents->First(); - } -} #endif - - -void wxApp::ExitMainLoop() -{ - m_keepGoing = FALSE; -} - -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 = wxFindWinFromHandle((WXHWND)hWnd), *wnd; - - // Try translations first; find the youngest window with - // a translation table. - for ( wnd = wndThis; wnd; wnd = wnd->GetParent() ) - { - if ( wnd->MSWTranslateMessage(wxmsg) ) - return TRUE; - } - - // Anyone for a non-translation message? Try youngest descendants first. - for ( wnd = wndThis; wnd; wnd = wnd->GetParent() ) - { - if ( wnd->MSWProcessMessage(wxmsg) ) - return TRUE; } - return FALSE; + return s_verComCtl32; +#endif // Microwin/!Microwin } -void wxApp::OnIdle(wxIdleEvent& event) -{ - static bool s_inOnIdle = FALSE; - - // Avoid recursion (via ProcessEvent default case) - if ( s_inOnIdle ) - return; - - s_inOnIdle = TRUE; +// Yield to incoming messages - // 'Garbage' collection of windows deleted with Close(). - DeletePendingObjects(); +bool wxApp::Yield(bool onlyIfNeeded) +{ + // MT-FIXME + static bool s_inYield = false; #if wxUSE_LOG - // flush the logged messages if any - wxLog *pLog = wxLog::GetActiveTarget(); - if ( pLog != NULL && pLog->HasPendingMessages() ) - pLog->Flush(); + // disable log flushing from here because a call to wxYield() shouldn't + // normally result in message boxes popping up &c + wxLog::Suspend(); #endif // wxUSE_LOG - // Send OnIdle events to all windows - if ( SendIdleEvents() ) + if ( s_inYield ) { - // SendIdleEvents() returns TRUE if at least one window requested more - // idle events - event.RequestMore(TRUE); - } - - // If they are pending events, we must process them. -#if wxUSE_THREADS - ProcessPendingEvents(); -#endif - s_inOnIdle = FALSE; -} - -// Send idle event to all top-level windows -bool wxApp::SendIdleEvents() -{ - bool needMore = FALSE; + if ( !onlyIfNeeded ) + { + wxFAIL_MSG( wxT("wxYield called recursively" ) ); + } - wxWindowList::Node* node = wxTopLevelWindows.GetFirst(); - while (node) - { - wxWindow* win = node->GetData(); - if (SendIdleEvents(win)) - needMore = TRUE; - node = node->GetNext(); + return false; } - 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); + s_inYield = true; - if (event.MoreRequested()) - needMore = TRUE; - - wxNode* node = win->GetChildren().First(); - while (node) + // 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 ) { - wxWindow* win = (wxWindow*) node->Data(); - if (SendIdleEvents(win)) - needMore = TRUE; +#if wxUSE_THREADS + wxMutexGuiLeaveOrEnter(); +#endif // wxUSE_THREADS - node = node->Next(); + if ( !wxTheApp->Dispatch() ) + break; } - return needMore; -} -void wxApp::DeletePendingObjects() -{ - wxNode *node = wxPendingDelete.First(); - while (node) - { - wxObject *obj = (wxObject *)node->Data(); - - delete obj; - - if (wxPendingDelete.Member(obj)) - delete node; + // if there are pending events, we must process them. + ProcessPendingEvents(); - // Deleting one object may have deleted other pending - // objects, so start from beginning of list again. - node = wxPendingDelete.First(); - } -} +#if wxUSE_LOG + // let the logs be flashed again + wxLog::Resume(); +#endif // wxUSE_LOG -void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event)) -{ - if (GetTopWindow()) - GetTopWindow()->Close(TRUE); -} + s_inYield = false; -// 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); - } + return true; } -wxLog* wxApp::CreateLogTarget() -{ - return new wxLogGui; -} +#if wxUSE_EXCEPTIONS -wxWindow* wxApp::GetTopWindow() const -{ - if (m_topWindow) - return m_topWindow; - else if (wxTopLevelWindows.GetCount() > 0) - return wxTopLevelWindows.GetFirst()->GetData(); - else - return NULL; -} +// ---------------------------------------------------------------------------- +// exception handling +// ---------------------------------------------------------------------------- -int wxApp::GetComCtl32Version() const +bool wxApp::OnExceptionInMainLoop() { - // have we loaded COMCTL32 yet? - HMODULE theModule = ::GetModuleHandle(_T("COMCTL32")); - int version = 0; - - // if so, then we can check for the version - if (theModule) + // ask the user about what to do: use the Win32 API function here as it + // could be dangerous to use any wxWidgets code in this state + switch ( + ::MessageBox + ( + NULL, + _T("An unhandled exception occurred. Press \"Abort\" to \ +terminate the program,\r\n\ +\"Retry\" to exit the program normally and \"Ignore\" to try to continue."), + _T("Unhandled exception"), + MB_ABORTRETRYIGNORE | + MB_ICONERROR| + MB_TASKMODAL + ) + ) { - // InitCommonControlsEx is unique to 4.7 and later - FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx"); + case IDABORT: + throw; - if (! theProc) - { // not found, must be 4.00 - version = 400; - } - else - { - // The following symbol are unique to 4.71 - // DllInstall - // FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos - // FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo - // FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange - // FlatSB_ShowScrollBar - // _DrawIndirectImageList _DuplicateImageList - // InitializeFlatSB - // UninitializeFlatSB - // we could check for any of these - I chose DllInstall - FARPROC theProc = ::GetProcAddress(theModule, "DllInstall"); - if (! theProc) - { - // not found, must be 4.70 - version = 470; - } - else - { // found, must be 4.71 - version = 471; - } - } - } - return version; -} + default: + wxFAIL_MSG( _T("unexpected MessageBox() return code") ); + // fall through -void wxExit() -{ - wxLogError(_("Fatal error: exiting")); - - wxApp::CleanUp(); -} + case IDRETRY: + return false; -// Yield to incoming messages -bool wxYield() -{ - MSG msg; - // We want to go back to the main message loop - // if we see a WM_QUIT. (?) -#ifdef __WXWINE__ - while (PeekMessage(&msg, (HWND)NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT) -#else - while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT) -#endif - { - if ( !wxTheApp->DoMessage() ) - break; + case IDIGNORE: + return true; } - // If they are pending events, we must process them. -#if wxUSE_THREADS - wxTheApp->ProcessPendingEvents(); -#endif - - return TRUE; } -HINSTANCE wxGetInstance() -{ - return wxhInstance; -} - -void wxSetInstance(HINSTANCE hInst) -{ - wxhInstance = hInst; -} - -// 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__)) -#include "main.cpp" -#endif +#endif // wxUSE_EXCEPTIONS