X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d0e278d98e9ecc0f78943a662fca855811f3bea7..dd9f8b6bb6935360a8271dc3e8749fb026b601a8:/src/msw/app.cpp diff --git a/src/msw/app.cpp b/src/msw/app.cpp index 2b69e91300..04916f784b 100644 --- a/src/msw/app.cpp +++ b/src/msw/app.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: app.cpp +// Name: src/msw/app.cpp // Purpose: wxApp // Author: Julian Smart // Modified by: @@ -17,10 +17,6 @@ // headers // --------------------------------------------------------------------------- -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #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" @@ -42,18 +40,21 @@ #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/crt.h" #include "wx/log.h" + #include "wx/module.h" #endif #include "wx/apptrait.h" #include "wx/filename.h" -#include "wx/module.h" #include "wx/dynlib.h" +#include "wx/evtloop.h" +#include "wx/thread.h" #include "wx/msw/private.h" +#include "wx/msw/dc.h" +#include "wx/msw/ole/oleutils.h" +#include "wx/msw/private/timer.h" #if wxUSE_TOOLTIPS #include "wx/tooltip.h" @@ -61,12 +62,17 @@ // 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__) +#if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__) #undef wxUSE_OLE #define wxUSE_OLE 0 #endif // broken compilers +#if defined(__POCKETPC__) || defined(__SMARTPHONE__) + #include + #include +#endif + #if wxUSE_OLE #include #endif @@ -74,34 +80,51 @@ #include #include -#include "wx/msw/wrapcctl.h" +#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_* + }; + + typedef HRESULT (CALLBACK* DLLGETVERSIONPROC)(DLLVERSIONINFO *); +#endif // defined(DLLVERSIONINFO) -#if (!defined(__MINGW32__) || wxCHECK_W32API_VERSION( 2, 0 )) && \ - !defined(__CYGWIN__) && !defined(__DIGITALMARS__) && !defined(__WXWINCE__) && \ - (!defined(_MSC_VER) || (_MSC_VER > 1100)) - #include -#endif // --------------------------------------------------------------------------- // global variables // --------------------------------------------------------------------------- -extern wxList WXDLLEXPORT wxPendingDelete; - #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) extern void wxSetKeyboardHook(bool doIt); #endif // NB: all "NoRedraw" classes must have the same names as the "normal" classes // with NR suffix - wxWindow::MSWCreate() supposes this -const wxChar *wxCanvasClassName = wxT("wxWindowClass"); -const wxChar *wxCanvasClassNameNR = wxT("wxWindowClassNR"); -const wxChar *wxMDIFrameClassName = wxT("wxMDIFrameClass"); -const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR"); -const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass"); -const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR"); - -HBRUSH wxDisableButtonBrush = (HBRUSH) 0; +#ifdef __WXWINCE__ +WXDLLIMPEXP_CORE wxChar *wxCanvasClassName; +WXDLLIMPEXP_CORE wxChar *wxCanvasClassNameNR; +#else +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"); // ---------------------------------------------------------------------------- // private functions @@ -175,7 +198,7 @@ void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig) { wxEndBusyCursor(); - const ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig; + ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig; delete data->wd; @@ -183,29 +206,80 @@ void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig) // the other windows reenabled, the activation is going to return to the // window which had had it before data->winActive->Destroy(); + + // also delete the temporary data object itself + delete data; } 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 - return !wxTheApp || wxTheApp->Dispatch(); + wxEventLoopBase * const evtLoop = wxEventLoop::GetActive(); + if ( !evtLoop || !evtLoop->Pending() ) + { + // no events means no quit event + return true; + } + + return evtLoop->Dispatch(); +} + +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 + ); } -wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo() +wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const { - static wxToolkitInfo info; - wxToolkitInfo& baseInfo = wxAppTraits::GetToolkitInfo(); - info.versionMajor = baseInfo.versionMajor; - info.versionMinor = baseInfo.versionMinor; - info.os = baseInfo.os; - info.shortName = _T("msw"); - info.name = _T("wxMSW"); -#ifdef __WXUNIVERSAL__ - info.shortName << _T("univ"); - info.name << _T("/wxUniversal"); + OSVERSIONINFO info; + wxZeroMemory(info); + + // 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) ) + { + if ( majVer ) + *majVer = info.dwMajorVersion; + if ( minVer ) + *minVer = info.dwMinorVersion; + } + +#if defined(__WXHANDHELD__) || defined(__WXWINCE__) + return wxPORT_WINCE; +#else + return wxPORT_MSW; #endif - return info; +} + +#if wxUSE_TIMER + +wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer) +{ + return new wxMSWTimerImpl(timer); +} + +#endif // wxUSE_TIMER + +wxEventLoopBase* wxGUIAppTraits::CreateEventLoop() +{ + return new wxEventLoop; } // =========================================================================== @@ -249,92 +323,40 @@ bool wxApp::Initialize(int& argc, wxChar **argv) // ensure that base cleanup is done if we return too early wxCallBaseCleanup callBaseCleanup(this); - // 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 && wxGetOsVersion() != wxWINDOWS_CE ) +#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) { - // 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/CE.\nProgram aborted."), - _T("wxWindows Fatal Error"), - MB_ICONERROR | MB_OK - ); - - return FALSE; + SetForegroundWindow( (HWND)(((DWORD)hWnd)|0x01) ); + return false; } -#endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU - -#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 -#ifdef __WXWINCE__ - if ( FAILED(::CoInitializeEx(NULL, COINIT_MULTITHREADED)) ) - wxLogError(_("Cannot initialize OLE")); -#else - if ( FAILED(::OleInitialize(NULL)) ) - wxLogError(_("Cannot initialize OLE")); -#endif #endif -#endif // wxUSE_OLE - -#if wxUSE_CTL3D - if (!Ctl3dRegister(wxhInstance)) - wxLogError(wxT("Cannot register CTL3D")); - - Ctl3dAutoSubclass(wxhInstance); -#endif // wxUSE_CTL3D - - RegisterWindowClasses(); - -#if defined(__WXMICROWIN__) && !defined(__WXWINCE__) - // Create the brush for disabling bitmap buttons +#if !defined(__WXMICROWIN__) + InitCommonControls(); +#endif // !defined(__WXMICROWIN__) - 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 +#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 - wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100); + wxOleInitialize(); - // 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 + RegisterWindowClasses(); #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) - wxSetKeyboardHook(TRUE); + wxSetKeyboardHook(true); #endif callBaseCleanup.Dismiss(); @@ -364,8 +386,8 @@ bool wxApp::RegisterWindowClasses() wndclass.hInstance = wxhInstance; wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW); - // Register the frame window class. - wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1); + // register the class for all normal windows + wndclass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); wndclass.lpszClassName = wxCanvasClassName; wndclass.style = styleNormal; @@ -421,7 +443,7 @@ bool wxApp::RegisterWindowClasses() wxLogLastError(wxT("RegisterClass(no redraw MDI child)")); } - return TRUE; + return true; } // --------------------------------------------------------------------------- @@ -430,7 +452,7 @@ bool wxApp::RegisterWindowClasses() bool wxApp::UnregisterWindowClasses() { - bool retval = TRUE; + bool retval = true; #ifndef __WXMICROWIN__ // MDI frame window class. @@ -438,7 +460,7 @@ bool wxApp::UnregisterWindowClasses() { wxLogLastError(wxT("UnregisterClass(MDI parent)")); - retval = FALSE; + retval = false; } // "no redraw" MDI frame @@ -446,7 +468,7 @@ bool wxApp::UnregisterWindowClasses() { wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)")); - retval = FALSE; + retval = false; } // MDI child frame window class. @@ -454,7 +476,7 @@ bool wxApp::UnregisterWindowClasses() { wxLogLastError(wxT("UnregisterClass(MDI child)")); - retval = FALSE; + retval = false; } // "no redraw" MDI child frame @@ -462,7 +484,7 @@ bool wxApp::UnregisterWindowClasses() { wxLogLastError(wxT("UnregisterClass(no redraw MDI child)")); - retval = FALSE; + retval = false; } // canvas class name @@ -470,14 +492,14 @@ bool wxApp::UnregisterWindowClasses() { wxLogLastError(wxT("UnregisterClass(canvas)")); - retval = FALSE; + retval = false; } if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) ) { wxLogLastError(wxT("UnregisterClass(no redraw canvas)")); - retval = FALSE; + retval = false; } #endif // __WXMICROWIN__ @@ -486,24 +508,17 @@ bool wxApp::UnregisterWindowClasses() void wxApp::CleanUp() { -#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) - wxSetKeyboardHook(FALSE); -#endif + // all objects pending for deletion must be deleted first, otherwise + // UnregisterWindowClasses() call wouldn't succeed (because windows + // using the classes being unregistered still exist), so call the base + // class method first and only then do our clean up + wxAppBase::CleanUp(); -#if wxUSE_PENWINDOWS - wxCleanUpPenWin(); +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) + wxSetKeyboardHook(false); #endif - if ( wxDisableButtonBrush ) - ::DeleteObject( wxDisableButtonBrush ); - -#if wxUSE_OLE -#ifdef __WXWINCE__ - ::CoUninitialize(); -#else - ::OleUninitialize(); -#endif -#endif + wxOleUninitialize(); // 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 @@ -511,14 +526,10 @@ void wxApp::CleanUp() // unregister the classes now UnregisterWindowClasses(); -#if wxUSE_CTL3D - Ctl3dUnregister(wxhInstance); +#ifdef __WXWINCE__ + free( wxCanvasClassName ); + free( wxCanvasClassNameNR ); #endif - - delete wxWinHandleHash; - wxWinHandleHash = NULL; - - wxAppBase::CleanUp(); } // ---------------------------------------------------------------------------- @@ -532,41 +543,20 @@ wxApp::wxApp() wxApp::~wxApp() { - // our cmd line arguments are allocated inside wxEntry(HINSTANCE), they - // don't come from main(), so we have to free them - - while ( argc ) - { - // m_argv elements were allocated by wxStrdup() - free(argv[--argc]); - } - - // but m_argv itself -- using new[] - 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 -} +// ---------------------------------------------------------------------------- +// wxApp idle handling +// ---------------------------------------------------------------------------- -void wxApp::OnIdle(wxIdleEvent& event) +void wxApp::OnIdle(wxIdleEvent& WXUNUSED(event)) { - wxAppBase::OnIdle(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(); + wxMSWDCImpl::ClearCache(); #endif // wxUSE_DC_CACHEING } @@ -576,21 +566,40 @@ void wxApp::WakeUpIdle() // 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(); + wxWindow * const topWindow = wxTheApp->GetTopWindow(); if ( topWindow ) { - if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) ) + HWND hwndTop = GetHwndOf(topWindow); + + // Do not post WM_NULL if there's already a pending WM_NULL to avoid + // overflowing the message queue. + // + // Notice that due to a limitation of PeekMessage() API (which handles + // 0,0 range specially), we have to check the range from 0-1 instead. + // This still makes it possible to overflow the queue with WM_NULLs by + // interspersing the calles to WakeUpIdle() with windows creation but + // it should be rather hard to do it accidentally. + MSG msg; + if ( !::PeekMessage(&msg, hwndTop, 0, 1, PM_NOREMOVE) || + ::PeekMessage(&msg, hwndTop, 1, 1, PM_NOREMOVE) ) { - // should never happen - wxLogLastError(wxT("PostMessage(WM_NULL)")); + if ( !::PostMessage(hwndTop, WM_NULL, 0, 0) ) + { + // should never happen + wxLogLastError(wxT("PostMessage(WM_NULL)")); + } } } } +// ---------------------------------------------------------------------------- +// other wxApp event hanlders +// ---------------------------------------------------------------------------- + void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event)) { if (GetTopWindow()) - GetTopWindow()->Close(TRUE); + GetTopWindow()->Close(true); } // Default behaviour: close the application with prompts. The @@ -600,17 +609,50 @@ void wxApp::OnQueryEndSession(wxCloseEvent& event) if (GetTopWindow()) { if (!GetTopWindow()->Close(!event.CanVeto())) - event.Veto(TRUE); + event.Veto(true); } } +// ---------------------------------------------------------------------------- +// system DLL versions +// ---------------------------------------------------------------------------- + +// these functions have trivial inline implementations for CE +#ifndef __WXWINCE__ + +#if wxUSE_DYNLIB_CLASS + +namespace +{ + +// helper function: retrieve the DLL version by using DllGetVersion(), returns +// 0 if the DLL doesn't export such function +int CallDllGetVersion(wxDynamicLibrary& dll) +{ + // now check if the function is available during run-time + wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dll ); + if ( !pfnDllGetVersion ) + return 0; + + DLLVERSIONINFO dvi; + dvi.cbSize = sizeof(dvi); + + HRESULT hr = (*pfnDllGetVersion)(&dvi); + if ( FAILED(hr) ) + { + wxLogApiError(_T("DllGetVersion"), hr); + + return 0; + } + + return 100*dvi.dwMajorVersion + dvi.dwMinorVersion; +} + +} // anonymous namespace + /* static */ int wxApp::GetComCtl32Version() { -//FIX ME FOR DIGITALMARS!! -#if defined(__WXMICROWIN__) || defined(__WXWINCE__) || defined(__DIGITALMARS__) - return 0; -#else // cache the result // // NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice, @@ -619,83 +661,110 @@ int wxApp::GetComCtl32Version() if ( s_verComCtl32 == -1 ) { - // initally assume no comctl32.dll at all - s_verComCtl32 = 0; - // we're prepared to handle the errors wxLogNull noLog; - // do we have it? + // the DLL should really be available wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM); + if ( !dllComCtl32.IsLoaded() ) + { + s_verComCtl32 = 0; + return 0; + } + + // try DllGetVersion() for recent DLLs + s_verComCtl32 = CallDllGetVersion(dllComCtl32); - // if so, then we can check for the version - if ( dllComCtl32.IsLoaded() ) + // if DllGetVersion() is unavailable either during compile or + // run-time, try to guess the version otherwise + if ( !s_verComCtl32 ) { -#ifdef DLLVER_PLATFORM_WINDOWS - // try to use DllGetVersion() if available in _headers_ - wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dllComCtl32 ); - if ( pfnDllGetVersion ) + // InitCommonControlsEx is unique to 4.70 and later + void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx")); + if ( !pfn ) { - 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; - } + // not found, must be 4.00 + s_verComCtl32 = 400; } -#endif - - // if DllGetVersion() is unavailable either during compile or - // run-time, try to guess the version otherwise - if ( !s_verComCtl32 ) + else // 4.70+ { - // InitCommonControlsEx is unique to 4.70 and later - void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx")); + // 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 4.00 - s_verComCtl32 = 400; + // not found, must be 4.70 + s_verComCtl32 = 470; } - else // 4.70+ + else { - // 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 - { - // found, must be 4.71 or later - s_verComCtl32 = 471; - } + // found, must be 4.71 or later + s_verComCtl32 = 471; } } } } return s_verComCtl32; -#endif // Microwin/!Microwin } +/* static */ +int wxApp::GetShell32Version() +{ + static int s_verShell32 = -1; + if ( s_verShell32 == -1 ) + { + // we're prepared to handle the errors + wxLogNull noLog; + + wxDynamicLibrary dllShell32(_T("shell32.dll"), wxDL_VERBATIM); + if ( dllShell32.IsLoaded() ) + { + s_verShell32 = CallDllGetVersion(dllShell32); + + if ( !s_verShell32 ) + { + // there doesn't seem to be any way to distinguish between 4.00 + // and 4.70 (starting from 4.71 we have DllGetVersion()) so + // just assume it is 4.0 + s_verShell32 = 400; + } + } + else // failed load the DLL? + { + s_verShell32 = 0; + } + } + + return s_verShell32; +} + +#else // !wxUSE_DYNLIB_CLASS + +/* static */ +int wxApp::GetComCtl32Version() +{ + return 0; +} + +/* static */ +int wxApp::GetShell32Version() +{ + return 0; +} + +#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS + +#endif // !__WXWINCE__ + +// ---------------------------------------------------------------------------- // Yield to incoming messages +// ---------------------------------------------------------------------------- bool wxApp::Yield(bool onlyIfNeeded) { // MT-FIXME - static bool s_inYield = FALSE; + static bool s_inYield = false; #if wxUSE_LOG // disable log flushing from here because a call to wxYield() shouldn't @@ -710,10 +779,10 @@ bool wxApp::Yield(bool onlyIfNeeded) wxFAIL_MSG( wxT("wxYield called recursively" ) ); } - return FALSE; + return false; } - s_inYield = TRUE; + 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 @@ -737,8 +806,48 @@ bool wxApp::Yield(bool onlyIfNeeded) wxLog::Resume(); #endif // wxUSE_LOG - s_inYield = FALSE; + s_inYield = false; + + return true; +} + +#if wxUSE_EXCEPTIONS + +// ---------------------------------------------------------------------------- +// exception handling +// ---------------------------------------------------------------------------- + +bool wxApp::OnExceptionInMainLoop() +{ + // 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 + ) + ) + { + case IDABORT: + throw; + + default: + wxFAIL_MSG( _T("unexpected MessageBox() return code") ); + // fall through - return TRUE; + case IDRETRY: + return false; + + case IDIGNORE: + return true; + } } +#endif // wxUSE_EXCEPTIONS