X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/d3f0a137d2d306d69106851dce9ee4f2a25b90d1..181dd701faf12eb62d2572dddca5af72cbd04022:/src/msw/app.cpp diff --git a/src/msw/app.cpp b/src/msw/app.cpp index 9e1d6f64e4..50df7cdeff 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" @@ -42,35 +40,41 @@ #include "wx/dialog.h" #include "wx/msgdlg.h" #include "wx/intl.h" - #include "wx/dynarray.h" + #include "wx/crt.h" + #include "wx/log.h" + #include "wx/module.h" #endif -#include "wx/msw/private.h" -#include "wx/log.h" -#include "wx/module.h" - -#if wxUSE_THREADS - #include "wx/thread.h" - - // define the array of MSG strutures - WX_DECLARE_OBJARRAY(MSG, wxMsgArray); - - #include "wx/arrimpl.cpp" +#include "wx/apptrait.h" +#include "wx/filename.h" +#include "wx/dynlib.h" +#include "wx/evtloop.h" +#include "wx/thread.h" +#include "wx/scopeguard.h" +#include "wx/vector.h" - WX_DEFINE_OBJARRAY(wxMsgArray); -#endif // wxUSE_THREADS +#include "wx/msw/private.h" +#include "wx/msw/dc.h" +#include "wx/msw/ole/oleutils.h" +#include "wx/msw/private/timer.h" -#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... -#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__) #undef wxUSE_OLE #define wxUSE_OLE 0 #endif // broken compilers +#if defined(__POCKETPC__) || defined(__SMARTPHONE__) + #include + #include +#endif + #if wxUSE_OLE #include #endif @@ -78,976 +82,775 @@ #include #include -#if (defined(__WIN95__) && !defined(__GNUWIN32__)) || defined(__TWIN32__) - #include +#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) + +#ifndef ATTACH_PARENT_PROCESS + #define ATTACH_PARENT_PROCESS ((DWORD)-1) #endif -#include "wx/msw/msvcrt.h" - // --------------------------------------------------------------------------- // global variables // --------------------------------------------------------------------------- -extern char *wxBuffer; -extern char *wxOsVersion; -extern wxList *wxWinHandleList; -extern wxList WXDLLEXPORT wxPendingDelete; +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) extern void wxSetKeyboardHook(bool doIt); -extern wxCursor *g_globalCursor; - -HINSTANCE wxhInstance = 0; -static MSG s_currentMsg; -wxApp *wxTheApp = NULL; +#endif -// FIXME why not const? and not static? -char wxFrameClassName[] = "wxFrameClass"; -char wxMDIFrameClassName[] = "wxMDIFrameClass"; -char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass"; -char wxPanelClassName[] = "wxPanelClass"; -char wxCanvasClassName[] = "wxCanvasClass"; +// because of mingw32 4.3 bug this struct can't be inside the namespace below: +// see http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/110282 +struct ClassRegInfo +{ + // the base name of the class: this is used to construct the unique name in + // wxApp::GetRegisteredClassName() + wxString basename; -HICON wxSTD_FRAME_ICON = (HICON) NULL; -HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL; -HICON wxSTD_MDIPARENTFRAME_ICON = (HICON) NULL; + // the name of the registered class with and without CS_[HV]REDRAW styles + wxString regname, + regnameNR; +}; -HICON wxDEFAULT_FRAME_ICON = (HICON) NULL; -HICON wxDEFAULT_MDICHILDFRAME_ICON = (HICON) NULL; -HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL; +namespace +{ -HBRUSH wxDisableButtonBrush = (HBRUSH) 0; +wxVector gs_regClassesInfo; -LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); +} // anonymous namespace -#if defined(__WIN95__) && !defined(__TWIN32__) - #define wxUSE_RICHEDIT 1 -#else - #define wxUSE_RICHEDIT 0 -#endif +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- -#if wxUSE_RICHEDIT - static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL; -#endif +LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); // =========================================================================== -// implementation +// wxGUIAppTraits implementation // =========================================================================== -// --------------------------------------------------------------------------- -// wxApp -// --------------------------------------------------------------------------- - -#if !USE_SHARED_LIBRARY - 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() -#endif - -long wxApp::sm_lastMessageTime = 0; - -//// Initialize -bool wxApp::Initialize() +// private class which we use to pass parameters from BeforeChildWaitLoop() to +// AfterChildWaitLoop() +struct ChildWaitLoopData { - // Some people may wish to use this, but - // probably it shouldn't be here by default. -#ifdef __WXDEBUG__ - // wxRedirectIOToConsole(); -#endif - - wxBuffer = new char[1500]; // FIXME - - wxClassInfo::InitializeClasses(); - -#if wxUSE_RESOURCES - wxGetResource("wxWindows", "OsVersion", &wxOsVersion); -#endif - - wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING); - wxTheColourDatabase->Initialize(); - - wxInitializeStockLists(); - wxInitializeStockObjects(); - -#if wxUSE_WX_RESOURCES - wxInitializeResourceSystem(); -#endif - - wxBitmap::InitStandardHandlers(); - -#if defined(__WIN95__) - InitCommonControls(); - -#if wxUSE_RICHEDIT - gs_hRichEdit = LoadLibrary("RICHED32.DLL"); - - if (gs_hRichEdit == (HINSTANCE) NULL) + ChildWaitLoopData(wxWindowDisabler *wd_, wxWindow *winActive_) { - wxLogError(_("Could not initialise Rich Edit DLL")); + wd = wd_; + winActive = winActive_; } -#endif // wxUSE_RICHEDIT - -#endif // __WIN95__ - // for OLE, enlarge message queue to be as large as possible - int iMsg = 96; - while (!SetMessageQueue(iMsg) && (iMsg -= 8)); + wxWindowDisabler *wd; + wxWindow *winActive; +}; +void *wxGUIAppTraits::BeforeChildWaitLoop() +{ /* - DWORD dwOleVer; - dwOleVer = CoBuildVersion(); - - // check the OLE library version - if (rmm != HIWORD(dwOleVer)) - { - wxMessageBox("Incorrect version of OLE libraries."); - return FALSE; - } + 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); +} -#if wxUSE_OLE - // we need to initialize OLE library - if ( FAILED(::OleInitialize(NULL)) ) - wxLogError(_("Cannot initialize OLE")); -#endif - -#if wxUSE_CTL3D - if (!Ctl3dRegister(wxhInstance)) - wxLogError("Cannot register CTL3D"); - - Ctl3dAutoSubclass(wxhInstance); -#endif - - g_globalCursor = new wxCursor; - - wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME"); - wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME"); - wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME"); - - wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME"); - wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME"); - wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME"); - - RegisterWindowClasses(); - - // Create the brush for disabling bitmap buttons - - LOGBRUSH lb ; - lb.lbStyle = BS_PATTERN; - lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ; - wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ; - ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ; +void wxGUIAppTraits::AlwaysYield() +{ + wxYield(); +} -#if wxUSE_PENWINDOWS - wxRegisterPenWin(); -#endif +void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig) +{ + wxEndBusyCursor(); - wxWinHandleList = new wxList(wxKEY_INTEGER); + ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig; - // 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++; -#endif + delete data->wd; - wxSetKeyboardHook(TRUE); + // 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(); - wxModule::RegisterModules(); - if (!wxModule::InitializeModules()) - return FALSE; - return TRUE; + // also delete the temporary data object itself + delete data; } -//// RegisterWindowClasses - -bool wxApp::RegisterWindowClasses() +bool wxGUIAppTraits::DoMessageFromThreadWait() { - /////////////////////////////////////////////////////////////////////// - // Register the frame window class. - WNDCLASS wndclass; // Structure used to register Windows class. - - wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ; - wndclass.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass.cbClsExtra = 0; - wndclass.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass.hInstance = wxhInstance; - wndclass.hIcon = (HICON) NULL; // wxSTD_FRAME_ICON; - wndclass.hCursor = LoadCursor( (HINSTANCE) NULL, IDC_ARROW ); - wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE+1) ; - // wndclass.hbrBackground = GetStockObject( WHITE_BRUSH ); - wndclass.lpszMenuName = NULL; -#ifdef _MULTIPLE_INSTANCES - sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance ); -#endif - wndclass.lpszClassName = wxFrameClassName; - - if (!RegisterClass( &wndclass )) + // 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() ) { - // wxFatalError("Can't register Frame Window class"); + // no events means no quit event + return true; } - /////////////////////////////////////////////////////////////////////// - // Register the MDI frame window class. - WNDCLASS wndclass1; // Structure used to register Windows class. - - wndclass1.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ; - wndclass1.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass1.cbClsExtra = 0; - wndclass1.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass1.hInstance = wxhInstance; - wndclass1.hIcon = (HICON) NULL; // wxSTD_MDIPARENTFRAME_ICON; - wndclass1.hCursor = LoadCursor( (HINSTANCE) NULL, IDC_ARROW ); - // wndclass1.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE+1) ; - wndclass1.hbrBackground = (HBRUSH) NULL; - wndclass1.lpszMenuName = NULL; - - wndclass1.lpszClassName = wxMDIFrameClassName; - if (!RegisterClass( &wndclass1 )) - { - // wxFatalError("Can't register MDI Frame window class"); - // return FALSE; - } + return evtLoop->Dispatch(); +} - /////////////////////////////////////////////////////////////////////// - // Register the MDI child frame window class. - WNDCLASS wndclass4; // Structure used to register Windows class. - - wndclass4.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ; - wndclass4.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass4.cbClsExtra = 0; - wndclass4.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass4.hInstance = wxhInstance; - wndclass4.hIcon = (HICON) NULL; // wxSTD_MDICHILDFRAME_ICON; - wndclass4.hCursor = LoadCursor( (HINSTANCE) NULL, IDC_ARROW ); - // TODO: perhaps this should be NULL so that Windows doesn't - // paint the background itself (would OnEraseBackground duplicate - // this?) - wndclass4.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ; - // wndclass4.hbrBackground = NULL; - wndclass4.lpszMenuName = NULL; - wndclass4.lpszClassName = wxMDIChildFrameClassName; - - if (!RegisterClass( &wndclass4 )) - { - // wxFatalError("Can't register MDI child frame window class"); - // return FALSE; - } +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 + ); +} - /////////////////////////////////////////////////////////////////////// - // Register the panel window class. - WNDCLASS wndclass2; // Structure used to register Windows class. - memset(&wndclass2, 0, sizeof(WNDCLASS)); // start with NULL defaults - wndclass2.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ; - wndclass2.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass2.cbClsExtra = 0; - wndclass2.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass2.hInstance = wxhInstance; - wndclass2.hIcon = (HICON) NULL; - wndclass2.hCursor = LoadCursor( (HINSTANCE) NULL, IDC_ARROW ); - // wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ; - wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH ); - wndclass2.lpszMenuName = NULL; - wndclass2.lpszClassName = wxPanelClassName; - if (!RegisterClass( &wndclass2 )) - { - // wxFatalError("Can't register Panel Window class"); - // return FALSE; - } +wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const +{ + OSVERSIONINFO info; + wxZeroMemory(info); - /////////////////////////////////////////////////////////////////////// - // Register the canvas and textsubwindow class name - WNDCLASS wndclass3; // Structure used to register Windows class. - memset(&wndclass3, 0, sizeof(WNDCLASS)); // start with NULL defaults - // Use CS_OWNDC to avoid messing about restoring the context - // for every graphic operation. - // wndclass3.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ; - // wxWin 2.0 - wndclass3.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ; - wndclass3.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass3.cbClsExtra = 0; - wndclass3.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass3.hInstance = wxhInstance; - wndclass3.hIcon = (HICON) NULL; - wndclass3.hCursor = LoadCursor( (HINSTANCE) NULL, IDC_ARROW ); - // wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ; - wndclass3.hbrBackground = (HBRUSH) NULL; - wndclass3.lpszMenuName = NULL; - wndclass3.lpszClassName = wxCanvasClassName; - if (!RegisterClass( &wndclass3)) + // 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) ) { - // wxFatalError("Can't register Canvas class"); - // return FALSE; + if ( majVer ) + *majVer = info.dwMajorVersion; + if ( minVer ) + *minVer = info.dwMinorVersion; } - return TRUE; +#if defined(__WXHANDHELD__) || defined(__WXWINCE__) + return wxPORT_WINCE; +#else + return wxPORT_MSW; +#endif } -//// Convert Windows to argc, argv style +#if wxUSE_TIMER -void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine) +wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer) { - wxStringList args; + return new wxMSWTimerImpl(timer); +} - wxString cmdLine(lpCmdLine); - int count = 0; +#endif // wxUSE_TIMER - // Get application name - char name[260]; // 260 is MAX_PATH value from windef.h - ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name)); +wxEventLoopBase* wxGUIAppTraits::CreateEventLoop() +{ + return new wxEventLoop; +} - // GNUWIN32 already fills in the first arg with the application name. - // JACS: apparently not now (b20 and above?) -#if 0 // !defined(__GNUWIN32__) - args.Add(name); - count ++; -#endif +// --------------------------------------------------------------------------- +// Stuff for using console from the GUI applications +// --------------------------------------------------------------------------- - strcpy(name, wxFileNameFromPath(name)); - wxStripExtension(name); - wxTheApp->SetAppName(name); +#ifndef __WXWINCE__ - // Break up string - // Treat strings enclosed in double-quotes as single arguments - int i = 0; - int len = cmdLine.Length(); - while (i < len) - { - // Skip whitespace - while ((i < len) && isspace(cmdLine.GetChar(i))) - i ++; +#include - if (i < len) - { - if (cmdLine.GetChar(i) == '"') // We found the start of a string - { - i ++; - int first = i; - while ((i < len) && (cmdLine.GetChar(i) != '"')) - i ++; +namespace +{ - wxString arg(cmdLine.Mid(first, (i - first))); +/* + Helper class to manipulate console from a GUI app. - args.Add(arg); - count ++; + Notice that console output is available in the GUI app only if: + - AttachConsole() returns TRUE (which means it never works under pre-XP) + - we have a valid STD_ERROR_HANDLE + - command history hasn't been changed since our startup - if (i < len) - i ++; // Skip past 2nd quote - } - else // Unquoted argument - { - int first = i; - while ((i < len) && !isspace(cmdLine.GetChar(i))) - i ++; + To check if all these conditions are verified, you need to simple call + IsOkToUse(). It will check the first two conditions above the first time it + is called (and if this fails, the subsequent calls will return immediately) + and also recheck the last one every time it is called. + */ +class wxConsoleStderr +{ +public: + // default ctor does nothing, call Init() before using this class + wxConsoleStderr() + { + m_hStderr = INVALID_HANDLE_VALUE; + m_historyLen = + m_dataLen = + m_dataLine = 0; - wxString arg(cmdLine.Mid(first, (i - first))); + m_ok = -1; + } - args.Add(arg); - count ++; + ~wxConsoleStderr() + { + if ( m_hStderr != INVALID_HANDLE_VALUE ) + { + if ( !::FreeConsole() ) + { + wxLogLastError(_T("FreeConsole")); } } } - wxTheApp->argv = new char*[count + 1]; - for (i = 0; i < count; i++) + // return true if we were successfully initialized and there had been no + // console activity which would interfere with our output since then + bool IsOkToUse() const { - wxString arg(args[i]); - wxTheApp->argv[i] = copystring((const char*)arg); - } - wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list - wxTheApp->argc = count; -} - -//// Cleans up any wxWindows internal structures left lying around + if ( m_ok == -1 ) + { + wxConsoleStderr * const self = const_cast(this); + self->m_ok = self->DoInit(); -void wxApp::CleanUp() -{ - //// COMMON CLEANUP + // no need to call IsHistoryUnchanged() as we just initialized + // m_history anyhow + return m_ok == 1; + } - // 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(); + return m_ok && IsHistoryUnchanged(); + } - // this will flush the old messages if any - delete wxLog::SetActiveTarget(new wxLogStderr); - // One last chance for pending objects to be cleaned up - wxTheApp->DeletePendingObjects(); + // output the provided text on the console, return true if ok + bool Write(const wxString& text); - wxModule::CleanUpModules(); +private: + // called by Init() once only to do the real initialization + bool DoInit(); -#if wxUSE_WX_RESOURCES - wxCleanUpResourceSystem(); + // retrieve the command line history into the provided buffer and return + // its length + int GetCommandHistory(wxWxCharBuffer& buf) const; - // wxDefaultResourceTable->ClearTable(); -#endif + // check if the console history has changed + bool IsHistoryUnchanged() const; - // 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; + int m_ok; // initially -1, set to true or false by Init() - wxDeleteStockObjects() ; + wxDynamicLibrary m_dllKernel32; - // Destroy all GDI lists, etc. - wxDeleteStockLists(); + HANDLE m_hStderr; // console handle, if it's valid we must call + // FreeConsole() (even if m_ok != 1) - delete wxTheColourDatabase; - wxTheColourDatabase = NULL; + wxWxCharBuffer m_history; // command history on startup + int m_historyLen; // length command history buffer - wxBitmap::CleanUpHandlers(); + wxCharBuffer m_data; // data between empty line and cursor position + int m_dataLen; // length data buffer + int m_dataLine; // line offset - delete[] wxBuffer; - wxBuffer = NULL; + typedef DWORD (WINAPI *GetConsoleCommandHistory_t)(LPTSTR sCommands, + DWORD nBufferLength, + LPCTSTR sExeName); + typedef DWORD (WINAPI *GetConsoleCommandHistoryLength_t)(LPCTSTR sExeName); - //// WINDOWS-SPECIFIC CLEANUP + GetConsoleCommandHistory_t m_pfnGetConsoleCommandHistory; + GetConsoleCommandHistoryLength_t m_pfnGetConsoleCommandHistoryLength; - wxSetKeyboardHook(FALSE); + wxDECLARE_NO_COPY_CLASS(wxConsoleStderr); +}; -#ifdef __WIN95__ +bool wxConsoleStderr::DoInit() +{ + HANDLE hStderr = ::GetStdHandle(STD_ERROR_HANDLE); -#if wxUSE_RICHEDIT - if (gs_hRichEdit != (HINSTANCE) NULL) - FreeLibrary(gs_hRichEdit); -#endif + if ( hStderr == INVALID_HANDLE_VALUE || !hStderr ) + return false; -#endif + if ( !m_dllKernel32.Load(_T("kernel32.dll")) ) + return false; -#if wxUSE_PENWINDOWS - wxCleanUpPenWin(); -#endif + typedef BOOL (WINAPI *AttachConsole_t)(DWORD dwProcessId); + AttachConsole_t wxDL_INIT_FUNC(pfn, AttachConsole, m_dllKernel32); - 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 ( !pfnAttachConsole || !pfnAttachConsole(ATTACH_PARENT_PROCESS) ) + return false; - if (wxDEFAULT_FRAME_ICON) - DestroyIcon(wxDEFAULT_FRAME_ICON); - if (wxDEFAULT_MDICHILDFRAME_ICON) - DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON); - if (wxDEFAULT_MDIPARENTFRAME_ICON) - DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON); + // console attached, set m_hStderr now to ensure that we free it in the + // dtor + m_hStderr = hStderr; - if ( wxDisableButtonBrush ) - ::DeleteObject( wxDisableButtonBrush ) ; + wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistory, m_dllKernel32); + if ( !m_pfnGetConsoleCommandHistory ) + return false; -#if wxUSE_OLE - ::OleUninitialize(); -#endif + wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistoryLength, m_dllKernel32); + if ( !m_pfnGetConsoleCommandHistoryLength ) + return false; -#if wxUSE_CTL3D - Ctl3dUnregister(wxhInstance); -#endif + // remember the current command history to be able to compare with it later + // in IsHistoryUnchanged() + m_historyLen = GetCommandHistory(m_history); + if ( !m_history ) + return false; - if (wxWinHandleList) - delete wxWinHandleList ; - wxClassInfo::CleanUpClasses(); + // now find the first blank line above the current position + CONSOLE_SCREEN_BUFFER_INFO csbi; - 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() > 0) + if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) ) { - wxLogDebug("There were memory leaks."); - wxDebugContext::Dump(); - wxDebugContext::PrintStatistics(); + wxLogLastError(_T("GetConsoleScreenBufferInfo")); + return false; } - // wxDebugContext::SetStream(NULL, NULL); -#endif - - // do it as the very last thing because everything else can log messages - delete wxLog::SetActiveTarget(NULL); -} - -#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++ + COORD pos; + pos.X = 0; + pos.Y = csbi.dwCursorPosition.Y + 1; -//// 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) - 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; + // we decide that a line is empty if first 4 characters are spaces + DWORD ret; + char buf[4]; + do + { + pos.Y--; + if ( !::ReadConsoleOutputCharacterA(m_hStderr, buf, WXSIZEOF(buf), + pos, &ret) ) + { + wxLogLastError(_T("ReadConsoleOutputCharacterA")); + return false; + } + } while ( wxStrncmp(" ", buf, WXSIZEOF(buf)) != 0 ); - if (!wxApp::Initialize()) - return 0; + // calculate line offset and length of data + m_dataLine = csbi.dwCursorPosition.Y - pos.Y; + m_dataLen = m_dataLine*csbi.dwMaximumWindowSize.X + csbi.dwCursorPosition.X; - // create the application object or ensure that one already exists - if (!wxTheApp) + if ( m_dataLen > 0 ) + { + m_data.extend(m_dataLen); + if ( !::ReadConsoleOutputCharacterA(m_hStderr, m_data.data(), m_dataLen, + pos, &ret) ) { - // 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, - "No initializer - use IMPLEMENT_APP macro." ); - - wxTheApp = (*wxApp::GetInitializerFunction()) (); + wxLogLastError(_T("ReadConsoleOutputCharacterA")); + return false; } + } - wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" ); + return true; +} - // save the WinMain() parameters - wxTheApp->ConvertToStandardCommandArgs(lpCmdLine); - wxTheApp->m_nCmdShow = nCmdShow; +int wxConsoleStderr::GetCommandHistory(wxWxCharBuffer& buf) const +{ + // these functions are internal and may only be called by cmd.exe + static const wxChar *CMD_EXE = _T("cmd.exe"); - // GUI-specific initialisation. In fact on Windows we don't have any, - // but this call is provided for compatibility across platforms. - wxTheApp->OnInitGui() ; + const int len = m_pfnGetConsoleCommandHistoryLength(CMD_EXE); + if ( len ) + { + buf.extend(len); - int retValue = 0; + int len2 = m_pfnGetConsoleCommandHistory(buf.data(), len, CMD_EXE); - 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() +#if !wxUSE_UNICODE + // there seems to be a bug in the GetConsoleCommandHistoryA(), it + // returns the length of Unicode string and not ANSI one + len2 /= 2; +#endif // !wxUSE_UNICODE - wxWindow *topWindow = wxTheApp->GetTopWindow(); - if ( topWindow ) + if ( len2 != len ) { - // Forcibly delete the window. - if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) || - topWindow->IsKindOf(CLASSINFO(wxDialog)) ) - { - topWindow->Close(TRUE); - wxTheApp->DeletePendingObjects(); - } - else - { - delete topWindow; - wxTheApp->SetTopWindow(NULL); - } + wxFAIL_MSG( _T("failed getting history?") ); } - - 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 + + return len; } -// restore warning state -#ifdef __VISUALC__ - #pragma warning(default: 4715) // not all control paths return a value -#endif // Visual C++ +bool wxConsoleStderr::IsHistoryUnchanged() const +{ + wxASSERT_MSG( m_ok == 1, _T("shouldn't be called if not initialized") ); -#else /* _WINDLL */ + // get (possibly changed) command history + wxWxCharBuffer history; + const int historyLen = GetCommandHistory(history); -//// Entry point for DLLs + // and compare it with the original one + return historyLen == m_historyLen && history && + memcmp(m_history, history, historyLen) == 0; +} -int wxEntry(WXHINSTANCE hInstance) +bool wxConsoleStderr::Write(const wxString& text) { - wxhInstance = (HINSTANCE) hInstance; - wxApp::Initialize(); + wxASSERT_MSG( m_hStderr != INVALID_HANDLE_VALUE, + _T("should only be called if Init() returned true") ); - // 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) + // get current position + CONSOLE_SCREEN_BUFFER_INFO csbi; + if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) ) { - wxCHECK_MSG( wxApp::GetInitializerFunction(), 0, - "No initializer - use IMPLEMENT_APP macro." ); - - wxTheApp = (* wxApp::GetInitializerFunction()) (); + wxLogLastError(_T("GetConsoleScreenBufferInfo")); + return false; } - wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" ); - - wxTheApp->argc = 0; - wxTheApp->argv = NULL; + // and calculate new position (where is empty line) + csbi.dwCursorPosition.X = 0; + csbi.dwCursorPosition.Y -= m_dataLine; - wxTheApp->OnInitGui(); + if ( !::SetConsoleCursorPosition(m_hStderr, csbi.dwCursorPosition) ) + { + wxLogLastError(_T("SetConsoleCursorPosition")); + return false; + } - wxTheApp->OnInit(); + DWORD ret; + if ( !::FillConsoleOutputCharacter(m_hStderr, _T(' '), m_dataLen, + csbi.dwCursorPosition, &ret) ) + { + wxLogLastError(_T("FillConsoleOutputCharacter")); + return false; + } - wxWindow *topWindow = wxTheApp->GetTopWindow(); - if ( topWindow && topWindow->GetHWND()) + if ( !::WriteConsole(m_hStderr, text.wx_str(), text.length(), &ret, NULL) ) { - topWindow->Show(TRUE); + wxLogLastError(_T("WriteConsole")); + return false; } - return 1; -} -#endif // _WINDLL + WriteConsoleA(m_hStderr, m_data, m_dataLen, &ret, 0); -//// Static member initialization + return true; +} -wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL; +wxConsoleStderr s_consoleStderr; -wxApp::wxApp() -{ - m_topWindow = NULL; - wxTheApp = this; - m_className = ""; - m_wantDebugOutput = TRUE ; - m_appName = ""; - argc = 0; - argv = NULL; -#ifdef __WXMSW__ - m_printMode = wxPRINT_WINDOWS; -#else - m_printMode = wxPRINT_POSTSCRIPT; -#endif - m_exitOnFrameDelete = TRUE; - m_auto3D = TRUE; -} +} // anonymous namespace -wxApp::~wxApp() +bool wxGUIAppTraits::CanUseStderr() { - // Delete command-line args - int i; - for (i = 0; i < argc; i++) - { - delete[] argv[i]; - } - delete[] argv; + return s_consoleStderr.IsOkToUse(); } -bool wxApp::Initialized() +bool wxGUIAppTraits::WriteToStderr(const wxString& text) { -#ifndef _WINDLL - if (GetTopWindow()) - return TRUE; - else - return FALSE; -#endif -#ifdef _WINDLL // Assume initialized if DLL (no way of telling) - return TRUE; -#endif + return s_consoleStderr.IsOkToUse() && s_consoleStderr.Write(text); } -/* - * 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("GetMessage"); - } - else - { -#if wxUSE_THREADS - wxASSERT_MSG( wxThread::IsMain(), - "only the main thread can process Windows messages" ); - - static bool s_hadGuiLock = TRUE; - static wxMsgArray s_aSavedMessages; +#endif // !__WXWINCE__ - // 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; +// =========================================================================== +// wxApp implementation +// =========================================================================== - // 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); - } +int wxApp::m_nCmdShow = SW_SHOWNORMAL; - 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; +// --------------------------------------------------------------------------- +// wxWin macros +// --------------------------------------------------------------------------- - size_t count = s_aSavedMessages.Count(); - for ( size_t n = 0; n < count; n++ ) - { - MSG& msg = s_aSavedMessages[n]; +IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler) - if ( !ProcessMessage((WXMSG *)&msg) ) - { - ::TranslateMessage(&msg); - ::DispatchMessage(&msg); - } - } +BEGIN_EVENT_TABLE(wxApp, wxEvtHandler) + EVT_IDLE(wxApp::OnIdle) + EVT_END_SESSION(wxApp::OnEndSession) + EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession) +END_EVENT_TABLE() - s_aSavedMessages.Empty(); - } - } -#endif // wxUSE_THREADS - - // Process the message - if ( !ProcessMessage((WXMSG *)&s_currentMsg) ) - { - ::TranslateMessage(&s_currentMsg); - wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */ - ::DispatchMessage(&s_currentMsg); - } - } +// 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(); } - return TRUE; -} + void Dismiss() { m_app = NULL; } -/* - * 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). - */ +private: + wxApp *m_app; +}; -int wxApp::MainLoop() +//// Initialize +bool wxApp::Initialize(int& argc, wxChar **argv) { - m_keepGoing = TRUE; + if ( !wxAppBase::Initialize(argc, argv) ) + return false; - while ( m_keepGoing ) - { -#if wxUSE_THREADS - wxMutexGuiLeaveOrEnter(); -#endif // wxUSE_THREADS + // ensure that base cleanup is done if we return too early + wxCallBaseCleanup callBaseCleanup(this); - while ( !::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) && - ProcessIdle() ) - { - } +#if !defined(__WXMICROWIN__) + InitCommonControls(); +#endif // !defined(__WXMICROWIN__) - DoMessage(); - } +#if defined(__SMARTPHONE__) || defined(__POCKETPC__) + SHInitExtraControls(); +#endif - return s_currentMsg.wParam; -} +#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 -// Returns TRUE if more time is needed. -bool wxApp::ProcessIdle() -{ - wxIdleEvent event; - event.SetEventObject(this); - ProcessEvent(event); + wxOleInitialize(); - return event.MoreRequested(); -} +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) + wxSetKeyboardHook(true); +#endif -void wxApp::ExitMainLoop() -{ - m_keepGoing = FALSE; -} + callBaseCleanup.Dismiss(); -bool wxApp::Pending() -{ - return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ; + return true; } -void wxApp::Dispatch() -{ - DoMessage(); -} +// --------------------------------------------------------------------------- +// Win32 window class registration +// --------------------------------------------------------------------------- -/* - * Give all windows a chance to preprocess - * the message. Some may have accelerator tables, or have - * MDI complications. - */ -bool wxApp::ProcessMessage(WXMSG *wxmsg) +/* static */ +const wxChar *wxApp::GetRegisteredClassName(const wxChar *name, + int bgBrushCol, + int extraStyles) { - MSG *msg = (MSG *)wxmsg; - HWND hWnd = msg->hwnd; - wxWindow *wndThis = wxFindWinFromHandle((WXHWND)hWnd), *wnd; + const size_t count = gs_regClassesInfo.size(); + for ( size_t n = 0; n < count; n++ ) + { + if ( gs_regClassesInfo[n].basename == name ) + return gs_regClassesInfo[n].regname.c_str(); + } + + // we need to register this class + WNDCLASS wndclass; + wxZeroMemory(wndclass); - // Try translations first; find the youngest window with - // a translation table. - for ( wnd = wndThis; wnd; wnd = wnd->GetParent() ) + wndclass.lpfnWndProc = (WNDPROC)wxWndProc; + wndclass.hInstance = wxhInstance; + wndclass.hCursor = ::LoadCursor(NULL, IDC_ARROW); + wndclass.hbrBackground = (HBRUSH)wxUIntToPtr(bgBrushCol + 1); + wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | extraStyles; + + + ClassRegInfo regClass; + regClass.basename = name; + + // constuct a unique suffix to allow registering the class with the same + // base name in a main application using wxWidgets and a DLL using + // wxWidgets loaded into its address space: as gs_regClassesInfo variable + // is different in them, we're going to obtain a unique prefix by using its + // address here + regClass.regname = regClass.basename + + wxString::Format(wxT("@%p"), &gs_regClassesInfo); + wndclass.lpszClassName = regClass.regname.wx_str(); + if ( !::RegisterClass(&wndclass) ) { - if ( wnd->MSWTranslateMessage(wxmsg) ) - return TRUE; + wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"), + regClass.regname)); + return NULL; } - // Anyone for a non-translation message? Try youngest descendants first. - for ( wnd = wndThis; wnd; wnd = wnd->GetParent() ) + // NB: remember that code elsewhere supposes that no redraw class names + // use the same names as normal classes with "NR" suffix so we must put + // "NR" at the end instead of using more natural basename+"NR"+suffix + regClass.regnameNR = regClass.regname + GetNoRedrawClassSuffix(); + wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW); + wndclass.lpszClassName = regClass.regnameNR.wx_str(); + if ( !::RegisterClass(&wndclass) ) { - if ( wnd->MSWProcessMessage(wxmsg) ) - return TRUE; + wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"), + regClass.regname)); + ::UnregisterClass(regClass.regname.c_str(), wxhInstance); + return NULL; } - return FALSE; + gs_regClassesInfo.push_back(regClass); + + // take care to return the pointer which will remain valid after the + // function returns (it could be invalidated later if new elements are + // added to the vector and it's reallocated but this shouldn't matter as + // this pointer should be used right now, not stored) + return gs_regClassesInfo.back().regname.wx_str(); } -void wxApp::OnIdle(wxIdleEvent& event) +bool wxApp::IsRegisteredClassName(const wxString& name) { - static bool s_inOnIdle = FALSE; - - // Avoid recursion (via ProcessEvent default case) - if ( s_inOnIdle ) - return; - - s_inOnIdle = TRUE; - - // 'Garbage' collection of windows deleted with Close(). - DeletePendingObjects(); - - // flush the logged messages if any - wxLog *pLog = wxLog::GetActiveTarget(); - if ( pLog != NULL && pLog->HasPendingMessages() ) - pLog->Flush(); - - // Send OnIdle events to all windows - if ( SendIdleEvents() ) + const size_t count = gs_regClassesInfo.size(); + for ( size_t n = 0; n < count; n++ ) { - // SendIdleEvents() returns TRUE if at least one window requested more - // idle events - event.RequestMore(TRUE); + if ( gs_regClassesInfo[n].regname == name || + gs_regClassesInfo[n].regnameNR == name ) + return true; } - s_inOnIdle = FALSE; + return false; } -// Send idle event to all top-level windows -bool wxApp::SendIdleEvents() +void wxApp::UnregisterWindowClasses() { - bool needMore = FALSE; - wxNode* node = wxTopLevelWindows.First(); - while (node) + const size_t count = gs_regClassesInfo.size(); + for ( size_t n = 0; n < count; n++ ) { - wxWindow* win = (wxWindow*) node->Data(); - if (SendIdleEvents(win)) - needMore = TRUE; + const ClassRegInfo& regClass = gs_regClassesInfo[n]; + if ( !::UnregisterClass(regClass.regname.c_str(), wxhInstance) ) + { + wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"), + regClass.regname)); + } - node = node->Next(); + if ( !::UnregisterClass(regClass.regnameNR.c_str(), wxhInstance) ) + { + wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"), + regClass.regnameNR)); + } } - return needMore; + gs_regClassesInfo.clear(); } -// Send idle event to window and all subwindows -bool wxApp::SendIdleEvents(wxWindow* win) +void wxApp::CleanUp() { - bool needMore = FALSE; + // 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 !defined(__WXMICROWIN__) && !defined(__WXWINCE__) + wxSetKeyboardHook(false); +#endif - wxIdleEvent event; - event.SetEventObject(win); - win->GetEventHandler()->ProcessEvent(event); + wxOleUninitialize(); - if (event.MoreRequested()) - needMore = TRUE; + // 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(); +} - wxNode* node = win->GetChildren().First(); - while (node) - { - wxWindow* win = (wxWindow*) node->Data(); - if (SendIdleEvents(win)) - needMore = TRUE; +// ---------------------------------------------------------------------------- +// wxApp ctor/dtor +// ---------------------------------------------------------------------------- - node = node->Next(); - } - return needMore ; +wxApp::wxApp() +{ + m_printMode = wxPRINT_WINDOWS; } -void wxApp::DeletePendingObjects() +wxApp::~wxApp() { - wxNode *node = wxPendingDelete.First(); - while (node) - { - wxObject *obj = (wxObject *)node->Data(); +} - delete obj; +// ---------------------------------------------------------------------------- +// wxApp idle handling +// ---------------------------------------------------------------------------- - if (wxPendingDelete.Member(obj)) - delete node; +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)) + wxMSWDCImpl::ClearCache(); +#endif // wxUSE_DC_CACHEING +} - // Deleting one object may have deleted other pending - // objects, so start from beginning of list again. - node = wxPendingDelete.First(); +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 * const topWindow = wxTheApp->GetTopWindow(); + if ( topWindow ) + { + 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) ) + { + 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); + // Windows will terminate the process soon after we return from + // WM_ENDSESSION handler or when we delete our last window, so make sure we + // at least execute our cleanup code before + + // prevent the window from being destroyed when the corresponding wxTLW is + // destroyed: this will result in a leak of a HWND, of course, but who + // cares when the process is being killed anyhow + if ( !wxTopLevelWindows.empty() ) + wxTopLevelWindows[0]->SetHWND(0); + + const int rc = OnExit(); + + wxEntryCleanup(); + + // calling exit() instead of ExitProcess() or not doing anything at all and + // being killed by Windows has the advantage of executing the dtors of + // global objects + exit(rc); } // Default behaviour: close the application with prompts. The @@ -1057,102 +860,194 @@ void wxApp::OnQueryEndSession(wxCloseEvent& event) if (GetTopWindow()) { if (!GetTopWindow()->Close(!event.CanVeto())) - event.Veto(TRUE); + event.Veto(true); } } -wxLog* wxApp::CreateLogTarget() +// ---------------------------------------------------------------------------- +// system DLL versions +// ---------------------------------------------------------------------------- + +// these functions have trivial inline implementations for CE +#ifndef __WXWINCE__ + +#if wxUSE_DYNLIB_CLASS + +namespace { - return new wxLogGui; -} -wxWindow* wxApp::GetTopWindow() const +// helper function: retrieve the DLL version by using DllGetVersion(), returns +// 0 if the DLL doesn't export such function +int CallDllGetVersion(wxDynamicLibrary& dll) { - if (m_topWindow) - return m_topWindow; - else if (wxTopLevelWindows.Number() > 0) - return (wxWindow*) wxTopLevelWindows.First()->Data(); - else - return NULL; + // 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; } -int wxApp::GetComCtl32Version() const +} // anonymous namespace + +/* static */ +int wxApp::GetComCtl32Version() { - // have we loaded COMCTL32 yet? - HMODULE theModule = ::GetModuleHandle("COMCTL32"); - int version = 0; + // 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; - // if so, then we can check for the version - if (theModule) + if ( s_verComCtl32 == -1 ) { - // InitCommonControlsEx is unique to 4.7 and later - FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx"); - - if (! theProc) - { // not found, must be 4.00 - version = 400; + // we're prepared to handle the errors + wxLogNull noLog; + + // we don't want to load comctl32.dll, it should be already loaded but, + // depending on the OS version and the presence of the manifest, it can + // be either v5 or v6 and instead of trying to guess it just get the + // handle of the already loaded version + wxLoadedDLL dllComCtl32(_T("comctl32.dll")); + if ( !dllComCtl32.IsLoaded() ) + { + s_verComCtl32 = 0; + return 0; } - else + + // try DllGetVersion() for recent DLLs + s_verComCtl32 = CallDllGetVersion(dllComCtl32); + + // if DllGetVersion() is unavailable either during compile or + // run-time, try to guess the version otherwise + if ( !s_verComCtl32 ) { - // 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) + // InitCommonControlsEx is unique to 4.70 and later + void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx")); + if ( !pfn ) { - // not found, must be 4.70 - version = 470; + // not found, must be 4.00 + s_verComCtl32 = 400; } - else - { // found, must be 4.71 - version = 471; + 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 + { + // found, must be 4.71 or later + s_verComCtl32 = 471; + } } } } - return version; -} -void wxExit() -{ - wxLogError(_("Fatal error: exiting")); - - wxApp::CleanUp(); + return s_verComCtl32; } -// Yield to incoming messages -bool wxYield() +/* static */ +int wxApp::GetShell32Version() { - MSG msg; - // We want to go back to the main message loop - // if we see a WM_QUIT. (?) - while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT) + static int s_verShell32 = -1; + if ( s_verShell32 == -1 ) { - if ( !wxTheApp->DoMessage() ) - break; + // 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 TRUE; + return s_verShell32; } -HINSTANCE wxGetInstance() +#else // !wxUSE_DYNLIB_CLASS + +/* static */ +int wxApp::GetComCtl32Version() { - return wxhInstance; + return 0; } -void wxSetInstance(HINSTANCE hInst) +/* static */ +int wxApp::GetShell32Version() { - wxhInstance = hInst; + return 0; } -// 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_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS + +#endif // !__WXWINCE__ + +#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 + + case IDRETRY: + return false; + + case IDIGNORE: + return true; + } +} + +#endif // wxUSE_EXCEPTIONS