X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/33ac7e6f01acbac1cff0ad400d8ea7f0bfd0a62f..697c314b162ff4758db0047e548d5401994d2c70:/src/msw/app.cpp diff --git a/src/msw/app.cpp b/src/msw/app.cpp index 3424745eaf..ae797329c2 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" @@ -42,30 +40,22 @@ #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/log.h" -#include "wx/module.h" +#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/msw/private.h" - -#if wxUSE_THREADS - #include "wx/thread.h" - - // define the array of MSG strutures - WX_DECLARE_OBJARRAY(MSG, wxMsgArray); - - #include "wx/arrimpl.cpp" - - WX_DEFINE_OBJARRAY(wxMsgArray); -#endif // wxUSE_THREADS - -#if wxUSE_WX_RESOURCES - #include "wx/resource.h" -#endif +#include "wx/msw/dc.h" +#include "wx/msw/ole/oleutils.h" +#include "wx/msw/private/timer.h" #if wxUSE_TOOLTIPS #include "wx/tooltip.h" @@ -73,12 +63,17 @@ // 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(__SC__) || 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 @@ -86,1218 +81,1021 @@ #include #include -#if defined(__WIN95__) && !(defined(__GNUWIN32_OLD__) || defined(__TWIN32__)) - #include -#endif - -#include "wx/msw/msvcrt.h" +#include "wx/msw/missing.h" -// ---------------------------------------------------------------------------- -// conditional compilation -// ---------------------------------------------------------------------------- - -// The macro _WIN32_IE is defined by commctrl.h (unless it had already been -// defined before) and shows us what common control features are available -// during the compile time (it doesn't mean that they will be available during -// the run-time, use GetComCtl32Version() to test for them!). The possible -// values are: +// 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 // -// 0x0200 for comctl32.dll 4.00 shipped with Win95/NT 4.0 -// 0x0300 4.70 IE 3.x -// 0x0400 4.71 IE 4.0 -// 0x0401 4.72 IE 4.01 and Win98 -// 0x0500 5.00 IE 5.x and NT 5.0 (Win2000) - -#ifndef _WIN32_IE - // minimal set of features by default - #define _WIN32_IE 0x0200 -#endif - -#if _WIN32_IE >= 0x0300 - #include +// 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 // --------------------------------------------------------------------------- // global variables // --------------------------------------------------------------------------- -extern wxChar *wxBuffer; -extern wxList *wxWinHandleList; -extern wxList WXDLLEXPORT wxPendingDelete; +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) extern void wxSetKeyboardHook(bool doIt); - -MSG s_currentMsg; -wxApp *wxTheApp = NULL; +#endif // NB: all "NoRedraw" classes must have the same names as the "normal" classes // with NR suffix - wxWindow::MSWCreate() supposes this -const wxChar *wxFrameClassName = wxT("wxFrameClass"); -const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR"); -const wxChar *wxMDIFrameClassName = wxT("wxMDIFrameClass"); -const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR"); -const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass"); -const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR"); -const wxChar *wxPanelClassName = wxT("wxPanelClass"); -const wxChar *wxPanelClassNameNR = wxT("wxPanelClassNR"); -const wxChar *wxCanvasClassName = wxT("wxCanvasClass"); -const wxChar *wxCanvasClassNameNR = wxT("wxCanvasClassNR"); - -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; +#ifdef __WXWINCE__ +WXDLLIMPEXP_CORE wxChar *wxCanvasClassName; +WXDLLIMPEXP_CORE wxChar *wxCanvasClassNameNR; +#else +WXDLLIMPEXP_CORE const wxChar *wxCanvasClassName = NULL; +WXDLLIMPEXP_CORE const wxChar *wxCanvasClassNameNR = NULL; +#endif +WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassName = NULL; +WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassNameNoRedraw = NULL; +WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassName = NULL; +WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassNameNoRedraw = NULL; -LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- -// FIXME wxUSE_ON_FATAL_EXCEPTION is only supported for VC++ now because it -// needs compiler support for Win32 SEH. Others (especially Borland) -// probably have it too, but I'm not sure about how it works -// JACS: get 'Cannot use __try in functions that require unwinding -// in Unicode mode, so disabling. -#if !defined(__VISUALC__) || defined(__WIN16__) || defined(UNICODE) - #undef wxUSE_ON_FATAL_EXCEPTION - #define wxUSE_ON_FATAL_EXCEPTION 0 -#endif // VC++ - -#if wxUSE_ON_FATAL_EXCEPTION - static bool gs_handleExceptions = FALSE; -#endif +LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); // =========================================================================== -// implementation +// wxGUIAppTraits implementation // =========================================================================== -// --------------------------------------------------------------------------- -// wxApp -// --------------------------------------------------------------------------- - -IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler) - -BEGIN_EVENT_TABLE(wxApp, wxEvtHandler) - EVT_IDLE(wxApp::OnIdle) - EVT_END_SESSION(wxApp::OnEndSession) - EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession) -END_EVENT_TABLE() - -//// Initialize -bool wxApp::Initialize() +// private class which we use to pass parameters from BeforeChildWaitLoop() to +// AfterChildWaitLoop() +struct ChildWaitLoopData { - // the first thing to do is to check if we're trying to run an Unicode - // program under Win9x - if so, abort right now as it has no chance to - // work -#if wxUSE_UNICODE - if ( wxGetOsVersion() != wxWINDOWS_NT ) + ChildWaitLoopData(wxWindowDisabler *wd_, wxWindow *winActive_) { - // 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.\nProgram aborted."), - _T("wxWindows Fatal Error"), - MB_ICONERROR | MB_OK - ); - - return FALSE; + wd = wd_; + winActive = winActive_; } -#endif // wxUSE_UNICODE - - // Some people may wish to use this, but - // probably it shouldn't be here by default. -#ifdef __WXDEBUG__ - // wxRedirectIOToConsole(); -#endif - - wxBuffer = new wxChar[1500]; // FIXME - - wxClassInfo::InitializeClasses(); - -#if wxUSE_THREADS - wxPendingEventsLocker = new wxCriticalSection; -#endif - wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING); - wxTheColourDatabase->Initialize(); + wxWindowDisabler *wd; + wxWindow *winActive; +}; - wxInitializeStockLists(); - wxInitializeStockObjects(); +void *wxGUIAppTraits::BeforeChildWaitLoop() +{ + /* + 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_WX_RESOURCES - wxInitializeResourceSystem(); -#endif +void wxGUIAppTraits::AlwaysYield() +{ + wxYield(); +} - wxBitmap::InitStandardHandlers(); +void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig) +{ + wxEndBusyCursor(); -#if defined(__WIN95__) - InitCommonControls(); + ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig; -#endif // __WIN95__ + delete data->wd; -#if wxUSE_OLE + // 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(); -#ifdef __WIN16__ - // for OLE, enlarge message queue to be as large as possible - int iMsg = 96; - while (!SetMessageQueue(iMsg) && (iMsg -= 8)) - ; -#endif // Win16 - // we need to initialize OLE library - if ( FAILED(::OleInitialize(NULL)) ) - wxLogError(_("Cannot initialize OLE")); -#endif // wxUSE_OLE - -#if wxUSE_CTL3D - if (!Ctl3dRegister(wxhInstance)) - wxLogError(wxT("Cannot register CTL3D")); - - Ctl3dAutoSubclass(wxhInstance); -#endif + // also delete the temporary data object itself + delete data; +} - // VZ: these icons are not in wx.rc anyhow (but should they?)! -#if 0 - wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME")); - wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME")); - wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME")); +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; + } - wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME")); - wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME")); - wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME")); -#endif // 0 + return evtLoop->Dispatch(); +} - RegisterWindowClasses(); +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 + ); +} - // Create the brush for disabling bitmap buttons +wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const +{ + OSVERSIONINFO info; + wxZeroMemory(info); - LOGBRUSH lb; - lb.lbStyle = BS_PATTERN; - lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") ); - if ( lb.lbHatch ) + // 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) ) { - wxDisableButtonBrush = ::CreateBrushIndirect( & lb ); - ::DeleteObject( (HGDIOBJ)lb.lbHatch ); + if ( majVer ) + *majVer = info.dwMajorVersion; + if ( minVer ) + *minVer = info.dwMinorVersion; } - //else: wxWindows resources are probably not linked in -#if wxUSE_PENWINDOWS - wxRegisterPenWin(); +#if defined(__WXHANDHELD__) || defined(__WXWINCE__) + return wxPORT_WINCE; +#else + return wxPORT_MSW; #endif +} - wxWinHandleList = new wxList(wxKEY_INTEGER); +#if wxUSE_TIMER - // 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 +wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer) +{ + return new wxMSWTimerImpl(timer); +} - wxSetKeyboardHook(TRUE); +#endif // wxUSE_TIMER - wxModule::RegisterModules(); - if (!wxModule::InitializeModules()) - return FALSE; - return TRUE; +wxEventLoopBase* wxGUIAppTraits::CreateEventLoop() +{ + return new wxEventLoop; } // --------------------------------------------------------------------------- -// RegisterWindowClasses +// Stuff for using console from the GUI applications // --------------------------------------------------------------------------- -// 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; - - // for each class we register one with CS_(V|H)REDRAW style and one - // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag - static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS; - static const long styleNoRedraw = CS_DBLCLKS; - - // the fields which are common to all classes - wndclass.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass.cbClsExtra = 0; - wndclass.cbWndExtra = sizeof( DWORD ); // VZ: what is this DWORD used for? - wndclass.hInstance = wxhInstance; - wndclass.hIcon = (HICON) NULL; - wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW); - wndclass.lpszMenuName = NULL; +#ifndef __WXWINCE__ - // Register the frame window class. - wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1); - wndclass.lpszClassName = wxFrameClassName; - wndclass.style = styleNormal; +#include - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(frame)")); +namespace +{ - return FALSE; - } +/* + Helper class to manipulate console from a GUI app. - // "no redraw" frame - wndclass.lpszClassName = wxFrameClassNameNoRedraw; - wndclass.style = styleNoRedraw; + 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 ( !RegisterClass(&wndclass) ) + 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() { - wxLogLastError(wxT("RegisterClass(no redraw frame)")); + m_hStderr = INVALID_HANDLE_VALUE; + m_historyLen = + m_dataLen = + m_dataLine = 0; - return FALSE; + m_ok = -1; } - // Register the MDI frame window class. - wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves - wndclass.lpszClassName = wxMDIFrameClassName; - wndclass.style = styleNormal; - - if ( !RegisterClass(&wndclass) ) + ~wxConsoleStderr() { - wxLogLastError(wxT("RegisterClass(MDI parent)")); - - return FALSE; + if ( m_hStderr != INVALID_HANDLE_VALUE ) + { + if ( !::FreeConsole() ) + { + wxLogLastError(_T("FreeConsole")); + } + } } - // "no redraw" MDI frame - wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw; - wndclass.style = styleNoRedraw; - - if ( !RegisterClass(&wndclass) ) + // 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 { - wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)")); + if ( m_ok == -1 ) + { + wxConsoleStderr * const self = wx_const_cast(wxConsoleStderr *, this); + self->m_ok = self->DoInit(); + + // no need to call IsHistoryUnchanged() as we just initialized + // m_history anyhow + return m_ok == 1; + } - return FALSE; + return m_ok && IsHistoryUnchanged(); } - // Register the MDI child frame window class. - wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); - wndclass.lpszClassName = wxMDIChildFrameClassName; - wndclass.style = styleNormal; - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(MDI child)")); + // output the provided text on the console, return true if ok + bool Write(const wxString& text); - return FALSE; - } +private: + // called by Init() once only to do the real initialization + bool DoInit(); - // "no redraw" MDI child frame - wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw; - wndclass.style = styleNoRedraw; + // retrieve the command line history into the provided buffer and return + // its length + int GetCommandHistory(wxWxCharBuffer& buf) const; - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(no redraw MDI child)")); + // check if the console history has changed + bool IsHistoryUnchanged() const; - return FALSE; - } + int m_ok; // initially -1, set to true or false by Init() - // Register the panel window class. - wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH ); - wndclass.lpszClassName = wxPanelClassName; - wndclass.style = styleNormal; + wxDynamicLibrary m_dllKernel32; - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(panel)")); + HANDLE m_hStderr; // console handle, if it's valid we must call + // FreeConsole() (even if m_ok != 1) - return FALSE; - } + wxWxCharBuffer m_history; // command history on startup + int m_historyLen; // length command history buffer - // Register the no redraw panel window class. - wndclass.lpszClassName = wxPanelClassNameNR; - wndclass.style = styleNoRedraw; + wxCharBuffer m_data; // data between empty line and cursor position + int m_dataLen; // length data buffer + int m_dataLine; // line offset - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(no redraw panel)")); + typedef DWORD (WINAPI *GetConsoleCommandHistory_t)(LPTSTR sCommands, + DWORD nBufferLength, + LPCTSTR sExeName); + typedef DWORD (WINAPI *GetConsoleCommandHistoryLength_t)(LPCTSTR sExeName); - return FALSE; - } + GetConsoleCommandHistory_t m_pfnGetConsoleCommandHistory; + GetConsoleCommandHistoryLength_t m_pfnGetConsoleCommandHistoryLength; - // Register the canvas and textsubwindow class name - wndclass.hbrBackground = (HBRUSH)NULL; - wndclass.lpszClassName = wxCanvasClassName; + DECLARE_NO_COPY_CLASS(wxConsoleStderr) +}; - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(canvas)")); +bool wxConsoleStderr::DoInit() +{ + HANDLE hStderr = ::GetStdHandle(STD_ERROR_HANDLE); - return FALSE; - } + if ( hStderr == INVALID_HANDLE_VALUE || !hStderr ) + return false; - wndclass.lpszClassName = wxCanvasClassNameNR; - wndclass.style = styleNoRedraw; - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(no redraw canvas)")); + if ( !m_dllKernel32.Load(_T("kernel32.dll")) ) + return false; - return FALSE; - } + typedef BOOL (WINAPI *AttachConsole_t)(DWORD dwProcessId); + AttachConsole_t wxDL_INIT_FUNC(pfn, AttachConsole, m_dllKernel32); - return TRUE; -} + if ( !pfnAttachConsole || !pfnAttachConsole(ATTACH_PARENT_PROCESS) ) + return false; -// --------------------------------------------------------------------------- -// Convert Windows to argc, argv style -// --------------------------------------------------------------------------- + // console attached, set m_hStderr now to ensure that we free it in the + // dtor + m_hStderr = hStderr; -void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine) -{ - wxStringList args; + wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistory, m_dllKernel32); + if ( !m_pfnGetConsoleCommandHistory ) + return false; - wxString cmdLine(lpCmdLine); - int count = 0; + wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistoryLength, m_dllKernel32); + if ( !m_pfnGetConsoleCommandHistoryLength ) + return false; - // Get application name - wxChar name[260]; // 260 is MAX_PATH value from windef.h - ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name)); + // 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; - args.Add(name); - count++; - wxStrcpy(name, wxFileNameFromPath(name)); - wxStripExtension(name); - wxTheApp->SetAppName(name); + // now find the first blank line above the current position + CONSOLE_SCREEN_BUFFER_INFO csbi; - // Break up string - // Treat strings enclosed in double-quotes as single arguments - int i = 0; - int len = cmdLine.Length(); - while (i < len) + if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) ) { - // Skip whitespace - while ((i < len) && wxIsspace(cmdLine.GetChar(i))) - i ++; - - if (i < len) - { - if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string - { - i ++; - int first = i; - while ((i < len) && (cmdLine.GetChar(i) != wxT('"'))) - i ++; - - wxString arg(cmdLine.Mid(first, (i - first))); + wxLogLastError(_T("GetConsoleScreenBufferInfo")); + return false; + } - args.Add(arg); - count ++; + COORD pos; + pos.X = 0; + pos.Y = csbi.dwCursorPosition.Y + 1; - if (i < len) - i ++; // Skip past 2nd quote - } - else // Unquoted argument - { - int first = i; - while ((i < len) && !wxIsspace(cmdLine.GetChar(i))) - i ++; + // 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 ); - wxString arg(cmdLine.Mid(first, (i - first))); + // calculate line offset and length of data + m_dataLine = csbi.dwCursorPosition.Y - pos.Y; + m_dataLen = m_dataLine*csbi.dwMaximumWindowSize.X + csbi.dwCursorPosition.X; - args.Add(arg); - count ++; - } + if ( m_dataLen > 0 ) + { + m_data.extend(m_dataLen); + if ( !::ReadConsoleOutputCharacterA(m_hStderr, m_data.data(), m_dataLen, + pos, &ret) ) + { + wxLogLastError(_T("ReadConsoleOutputCharacterA")); + return false; } } - wxTheApp->argv = new wxChar*[count + 1]; - for (i = 0; i < count; i++) - { - wxString arg(args[i]); - wxTheApp->argv[i] = copystring((const wxChar*)arg); - } - wxTheApp->argv[count] = NULL; // argv[] is a NULL-terminated list - wxTheApp->argc = count; + return true; } -//// Cleans up any wxWindows internal structures left lying around - -void wxApp::CleanUp() +int wxConsoleStderr::GetCommandHistory(wxWxCharBuffer& buf) const { - //// COMMON CLEANUP + // these functions are internal and may only be called by cmd.exe + static const wxChar *CMD_EXE = _T("cmd.exe"); -#if wxUSE_LOG - // flush the logged messages if any and install a 'safer' log target: the - // default one (wxLogGui) can't be used after the resources are freed just - // below and the user suppliedo ne might be even more unsafe (using any - // wxWindows GUI function is unsafe starting from now) - wxLog::DontCreateOnDemand(); - - // this will flush the old messages if any - delete wxLog::SetActiveTarget(new wxLogStderr); -#endif // wxUSE_LOG - - // One last chance for pending objects to be cleaned up - wxTheApp->DeletePendingObjects(); - - wxModule::CleanUpModules(); - -#if wxUSE_WX_RESOURCES - wxCleanUpResourceSystem(); - - // wxDefaultResourceTable->ClearTable(); -#endif - - wxDeleteStockObjects(); - - // Destroy all GDI lists, etc. - wxDeleteStockLists(); - - delete wxTheColourDatabase; - wxTheColourDatabase = NULL; - - wxBitmap::CleanUpHandlers(); - - delete[] wxBuffer; - wxBuffer = NULL; + const int len = m_pfnGetConsoleCommandHistoryLength(CMD_EXE); + if ( len ) + { + buf.extend(len); - //// WINDOWS-SPECIFIC CLEANUP + int len2 = m_pfnGetConsoleCommandHistory(buf.data(), len, CMD_EXE); - wxSetKeyboardHook(FALSE); +#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 -#if wxUSE_PENWINDOWS - wxCleanUpPenWin(); -#endif + if ( len2 != len ) + { + wxFAIL_MSG( _T("failed getting history?") ); + } + } - if (wxSTD_FRAME_ICON) - DestroyIcon(wxSTD_FRAME_ICON); - if (wxSTD_MDICHILDFRAME_ICON) - DestroyIcon(wxSTD_MDICHILDFRAME_ICON); - if (wxSTD_MDIPARENTFRAME_ICON) - DestroyIcon(wxSTD_MDIPARENTFRAME_ICON); + return len; +} - if (wxDEFAULT_FRAME_ICON) - DestroyIcon(wxDEFAULT_FRAME_ICON); - if (wxDEFAULT_MDICHILDFRAME_ICON) - DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON); - if (wxDEFAULT_MDIPARENTFRAME_ICON) - DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON); +bool wxConsoleStderr::IsHistoryUnchanged() const +{ + wxASSERT_MSG( m_ok == 1, _T("shouldn't be called if not initialized") ); - if ( wxDisableButtonBrush ) - ::DeleteObject( wxDisableButtonBrush ); + // get (possibly changed) command history + wxWxCharBuffer history; + const int historyLen = GetCommandHistory(history); -#if wxUSE_OLE - ::OleUninitialize(); -#endif + // and compare it with the original one + return historyLen == m_historyLen && history && + memcmp(m_history, history, historyLen) == 0; +} -#if wxUSE_CTL3D - Ctl3dUnregister(wxhInstance); -#endif +bool wxConsoleStderr::Write(const wxString& text) +{ + wxASSERT_MSG( m_hStderr != INVALID_HANDLE_VALUE, + _T("should only be called if Init() returned true") ); - if (wxWinHandleList) - delete wxWinHandleList; + // get current position + CONSOLE_SCREEN_BUFFER_INFO csbi; + if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) ) + { + wxLogLastError(_T("GetConsoleScreenBufferInfo")); + return false; + } - // GL: I'm annoyed ... I don't know where to put this and I don't want to - // create a module for that as it's part of the core. - delete wxPendingEvents; -#if wxUSE_THREADS - delete wxPendingEventsLocker; - // If we don't do the following, we get an apparent memory leak. - ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker(); -#endif + // and calculate new position (where is empty line) + csbi.dwCursorPosition.X = 0; + csbi.dwCursorPosition.Y -= m_dataLine; - wxClassInfo::CleanUpClasses(); + if ( !::SetConsoleCursorPosition(m_hStderr, csbi.dwCursorPosition) ) + { + wxLogLastError(_T("SetConsoleCursorPosition")); + return false; + } - delete wxTheApp; - wxTheApp = NULL; + DWORD ret; + if ( !::FillConsoleOutputCharacter(m_hStderr, _T(' '), m_dataLen, + csbi.dwCursorPosition, &ret) ) + { + wxLogLastError(_T("FillConsoleOutputCharacter")); + return false; + } -#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) + if ( !::WriteConsole(m_hStderr, text.wx_str(), text.length(), &ret, NULL) ) { - wxLogMessage(wxT("There were memory leaks.")); - wxDebugContext::Dump(); - wxDebugContext::PrintStatistics(); + wxLogLastError(_T("WriteConsole")); + return false; } - // wxDebugContext::SetStream(NULL, NULL); -#endif -#if wxUSE_LOG - // do it as the very last thing because everything else can log messages - delete wxLog::SetActiveTarget(NULL); -#endif // wxUSE_LOG + WriteConsoleA(m_hStderr, m_data, m_dataLen, &ret, 0); + + return true; } -//---------------------------------------------------------------------- -// Entry point helpers, used by wxPython -//---------------------------------------------------------------------- +wxConsoleStderr s_consoleStderr; -int WXDLLEXPORT wxEntryStart( int WXUNUSED(argc), char** WXUNUSED(argv) ) -{ - return wxApp::Initialize(); -} +} // anonymous namespace -int WXDLLEXPORT wxEntryInitGui() +bool wxGUIAppTraits::CanUseStderr() { - wxTheApp->OnInitGui(); - return 0; + return s_consoleStderr.IsOkToUse(); } -void WXDLLEXPORT wxEntryCleanup() +bool wxGUIAppTraits::WriteToStderr(const wxString& text) { - wxApp::CleanUp(); + return s_consoleStderr.IsOkToUse() && s_consoleStderr.Write(text); } +#endif // !__WXWINCE__ -#if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL)) - -// temporarily disable this warning which would be generated in release builds -// because of __try -#ifdef __VISUALC__ - #pragma warning(disable: 4715) // not all control paths return a value -#endif // Visual C++ - -//---------------------------------------------------------------------- -// Main wxWindows entry point -//---------------------------------------------------------------------- -int wxEntry(WXHINSTANCE hInstance, - WXHINSTANCE WXUNUSED(hPrevInstance), - char *lpCmdLine, - int nCmdShow, - bool enterLoop) -{ - // do check for memory leaks on program exit - // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free - // deallocated memory which may be used to simulate low-memory condition) - wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF); -#ifdef __MWERKS__ -#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT - // This seems to be necessary since there are 'rogue' - // objects present at this point (perhaps global objects?) - // Setting a checkpoint will ignore them as far as the - // memory checking facility is concerned. - // Of course you may argue that memory allocated in globals should be - // checked, but this is a reasonable compromise. - wxDebugContext::SetCheckpoint(); -#endif -#endif +// =========================================================================== +// wxApp implementation +// =========================================================================== - // take everything into a try-except block to be able to call - // OnFatalException() if necessary -#if wxUSE_ON_FATAL_EXCEPTION - __try { -#endif - wxhInstance = (HINSTANCE) hInstance; +int wxApp::m_nCmdShow = SW_SHOWNORMAL; - if (!wxEntryStart(0,0)) - return 0; +// --------------------------------------------------------------------------- +// wxWin macros +// --------------------------------------------------------------------------- - // create the application object or ensure that one already exists - if (!wxTheApp) - { - // The app may have declared a global application object, but we recommend - // the IMPLEMENT_APP macro is used instead, which sets an initializer - // function for delayed, dynamic app object construction. - wxCHECK_MSG( wxApp::GetInitializerFunction(), 0, - wxT("No initializer - use IMPLEMENT_APP macro.") ); +IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler) - wxTheApp = (*wxApp::GetInitializerFunction()) (); - } +BEGIN_EVENT_TABLE(wxApp, wxEvtHandler) + EVT_IDLE(wxApp::OnIdle) + EVT_END_SESSION(wxApp::OnEndSession) + EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession) +END_EVENT_TABLE() - wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") ); +// 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(); } - // save the WinMain() parameters - wxTheApp->ConvertToStandardCommandArgs(lpCmdLine); - wxTheApp->m_nCmdShow = nCmdShow; + void Dismiss() { m_app = NULL; } - // GUI-specific initialisation. In fact on Windows we don't have any, - // but this call is provided for compatibility across platforms. - wxEntryInitGui(); +private: + wxApp *m_app; +}; - // We really don't want timestamps by default, because it means - // we can't simply double-click on the error message and get to that - // line in the source. So VC++ at least, let's have a sensible default. -#ifdef __VISUALC__ - wxLog::SetTimestamp(NULL); +//// 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) + { + SetForegroundWindow( (HWND)(((DWORD)hWnd)|0x01) ); + return false; + } #endif - int retValue = 0; - - // it is common to create a modal dialog in OnInit() (to ask/notify the - // user about something) but it wouldn't work if we don't change the - // "exit on delete last frame" flag here as when this dialog is - // deleted, the app would terminate (it was the last top level window - // as the main frame wasn't created yet!), so disable this behaviour - // temproarily - bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete(); - wxTheApp->SetExitOnFrameDelete(FALSE); - - // init the app - retValue = wxTheApp->OnInit() ? 0 : -1; - - // restore the old flag value - wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete); - - if ( retValue == 0 ) - { - if ( enterLoop ) - { - // run the main loop - 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 !defined(__WXMICROWIN__) + InitCommonControls(); +#endif // !defined(__WXMICROWIN__) - 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); - } - } +#if defined(__SMARTPHONE__) || defined(__POCKETPC__) + SHInitExtraControls(); +#endif - wxTheApp->OnExit(); +#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 - wxEntryCleanup(); + wxOleInitialize(); - return retValue; + RegisterWindowClasses(); -#if wxUSE_ON_FATAL_EXCEPTION - } - __except ( gs_handleExceptions ? EXCEPTION_EXECUTE_HANDLER - : EXCEPTION_CONTINUE_SEARCH ) { - if ( wxTheApp ) - { - // give the user a chance to do something special about this - wxTheApp->OnFatalException(); - } +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) + wxSetKeyboardHook(true); +#endif - ::ExitProcess(3); // the same exit code as abort() + callBaseCleanup.Dismiss(); - // NOTREACHED - } -#endif // wxUSE_ON_FATAL_EXCEPTION + return true; } -// restore warning state -#ifdef __VISUALC__ - #pragma warning(default: 4715) // not all control paths return a value -#endif // Visual C++ - -#else /* _WINDLL */ - -//---------------------------------------------------------------------- -// Entry point for wxWindows + the App in a DLL -//---------------------------------------------------------------------- +// --------------------------------------------------------------------------- +// RegisterWindowClasses +// --------------------------------------------------------------------------- -int wxEntry(WXHINSTANCE hInstance) +// This function registers the given class name and stores a pointer to a +// heap-allocated copy of it at the specified location, it must be deleted +// later. +static void RegisterAndStoreClassName(const wxString& uniqueClassName, + const wxChar **className, + WNDCLASS *lpWndClass) { - wxhInstance = (HINSTANCE) hInstance; - wxEntryStart(0, 0); + const size_t length = uniqueClassName.length() + 1; // for trailing NUL + wxChar *newChars = new wxChar[length]; + wxStrncpy(newChars, uniqueClassName, length); + *className = newChars; + lpWndClass->lpszClassName = *className; - // 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) + if ( !::RegisterClass(lpWndClass) ) { - wxCHECK_MSG( wxApp::GetInitializerFunction(), 0, - "No initializer - use IMPLEMENT_APP macro." ); - - wxTheApp = (* wxApp::GetInitializerFunction()) (); + wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"), newChars)); } +} - wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" ); +// This function registers the class defined by the provided WNDCLASS struct +// contents using a unique name constructed from the specified base name and +// and a suffix unique to this library instance. It also stores the generated +// unique names for normal and "no redraw" versions of the class in the +// provided variables, caller must delete their contents later. +static void RegisterClassWithUniqueNames(const wxString& baseName, + const wxChar **className, + const wxChar **classNameNR, + WNDCLASS *lpWndClass) +{ + // 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; - wxTheApp->argc = 0; - wxTheApp->argv = NULL; + const wxString uniqueSuffix(wxString::Format(wxT("@%p"), className)); - wxEntryInitGui(); + wxString uniqueClassName(baseName + uniqueSuffix); + lpWndClass->style = styleNormal; + RegisterAndStoreClassName(uniqueClassName, className, lpWndClass); - wxTheApp->OnInit(); + // 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 + wxString uniqueClassNameNR(uniqueClassName + wxT("NR")); + lpWndClass->style = styleNoRedraw; + RegisterAndStoreClassName(uniqueClassNameNR, classNameNR, lpWndClass); +} - wxWindow *topWindow = wxTheApp->GetTopWindow(); - if ( topWindow && topWindow->GetHWND()) - { - topWindow->Show(TRUE); - } +// 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); - return 1; -} -#endif // _WINDLL + // the fields which are common to all classes + wndclass.lpfnWndProc = (WNDPROC)wxWndProc; + wndclass.hInstance = wxhInstance; + wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW); -//// Static member initialization + // register the class for all normal windows and "no redraw" frames + wndclass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); + RegisterClassWithUniqueNames(wxT("wxWindowClass"), + &wxCanvasClassName, + &wxCanvasClassNameNR, + &wndclass); -wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL; + // Register the MDI frame window class and "no redraw" MDI frame + wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves + RegisterClassWithUniqueNames(wxT("wxMDIFrameClass"), + &wxMDIFrameClassName, + &wxMDIFrameClassNameNoRedraw, + &wndclass); -wxApp::wxApp() -{ - m_topWindow = NULL; - wxTheApp = this; - m_wantDebugOutput = TRUE; + // Register the MDI child frame window class and "no redraw" MDI child frame + wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); + RegisterClassWithUniqueNames(wxT("wxMDIChildFrameClass"), + &wxMDIChildFrameClassName, + &wxMDIChildFrameClassNameNoRedraw, + &wndclass); - argc = 0; - argv = NULL; - m_printMode = wxPRINT_WINDOWS; - m_exitOnFrameDelete = TRUE; - m_auto3D = TRUE; + return true; } -wxApp::~wxApp() -{ - // Delete command-line args - int i; - for (i = 0; i < argc; i++) - { - delete[] argv[i]; - } - delete[] argv; -} +// --------------------------------------------------------------------------- +// UnregisterWindowClasses +// --------------------------------------------------------------------------- -bool wxApp::Initialized() +// This function unregisters the class with the given name and frees memory +// allocated for it by RegisterAndStoreClassName(). +static bool UnregisterAndFreeClassName(const wxChar **ppClassName) { -#ifndef _WINDLL - if (GetTopWindow()) - return TRUE; - else - return FALSE; -#else // Assume initialized if DLL (no way of telling) - return TRUE; -#endif -} + bool retval = true; -/* - * 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 ) + if ( !::UnregisterClass(*ppClassName, wxhInstance) ) { - // got WM_QUIT - m_keepGoing = FALSE; + wxLogLastError( + wxString::Format(wxT("UnregisterClass(%s)"), *ppClassName)); - return FALSE; - } - else if ( rc == -1 ) - { - // should never happen, but let's test for it nevertheless - wxLogLastError(wxT("GetMessage")); + retval = false; } - else - { -#if wxUSE_THREADS - wxASSERT_MSG( wxThread::IsMain(), - wxT("only the main thread can process Windows messages") ); - static bool s_hadGuiLock = TRUE; - static wxMsgArray s_aSavedMessages; + delete [] (wxChar*) *ppClassName; + *ppClassName = NULL; - // 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; + return retval; +} - // 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); - } +bool wxApp::UnregisterWindowClasses() +{ + bool retval = true; - 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; +#ifndef __WXMICROWIN__ + if ( !UnregisterAndFreeClassName(&wxMDIFrameClassName) ) + retval = false; - size_t count = s_aSavedMessages.Count(); - for ( size_t n = 0; n < count; n++ ) - { - MSG& msg = s_aSavedMessages[n]; + if ( !UnregisterAndFreeClassName(&wxMDIFrameClassNameNoRedraw) ) + retval = false; - if ( !ProcessMessage((WXMSG *)&msg) ) - { - ::TranslateMessage(&msg); - ::DispatchMessage(&msg); - } - } + if ( !UnregisterAndFreeClassName(&wxMDIChildFrameClassName) ) + retval = false; - s_aSavedMessages.Empty(); - } - } -#endif // wxUSE_THREADS + if ( !UnregisterAndFreeClassName(&wxMDIChildFrameClassNameNoRedraw) ) + retval = false; - // Process the message - if ( !ProcessMessage((WXMSG *)&s_currentMsg) ) - { - ::TranslateMessage(&s_currentMsg); - ::DispatchMessage(&s_currentMsg); - } - } + if ( !UnregisterAndFreeClassName(&wxCanvasClassName) ) + retval = false; - return TRUE; -} + if ( !UnregisterAndFreeClassName(&wxCanvasClassNameNR) ) + retval = false; +#endif // __WXMICROWIN__ -/* - * 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). - */ + return retval; +} -int wxApp::MainLoop() +void wxApp::CleanUp() { - m_keepGoing = TRUE; - - while ( m_keepGoing ) - { -#if wxUSE_THREADS - wxMutexGuiLeaveOrEnter(); -#endif // wxUSE_THREADS + // 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 - while ( !Pending() && ProcessIdle() ) - ; + wxOleUninitialize(); - // a message came or no more idle processing to do - DoMessage(); - } + // 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(); - return s_currentMsg.wParam; +#ifdef __WXWINCE__ + free( wxCanvasClassName ); + free( wxCanvasClassNameNR ); +#endif } -// Returns TRUE if more time is needed. -bool wxApp::ProcessIdle() -{ - wxIdleEvent event; - event.SetEventObject(this); - ProcessEvent(event); - - return event.MoreRequested(); -} +// ---------------------------------------------------------------------------- +// wxApp ctor/dtor +// ---------------------------------------------------------------------------- -void wxApp::ExitMainLoop() +wxApp::wxApp() { - // VZ: why not ::PostQuitMessage()? - m_keepGoing = FALSE; + m_printMode = wxPRINT_WINDOWS; } -bool wxApp::Pending() +wxApp::~wxApp() { - return ::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0; } -void wxApp::Dispatch() +// ---------------------------------------------------------------------------- +// wxApp idle handling +// ---------------------------------------------------------------------------- + +void wxApp::OnIdle(wxIdleEvent& WXUNUSED(event)) { - DoMessage(); +#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 } -/* - * Give all windows a chance to preprocess - * the message. Some may have accelerator tables, or have - * MDI complications. - */ - -bool wxApp::ProcessMessage(WXMSG *wxmsg) +void wxApp::WakeUpIdle() { - MSG *msg = (MSG *)wxmsg; - HWND hWnd = msg->hwnd; - wxWindow *wndThis = wxGetWindowFromHWND((WXHWND)hWnd); - -#if wxUSE_TOOLTIPS - // we must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to - // popup the tooltip bubbles - if ( wndThis && (msg->message == WM_MOUSEMOVE) ) + // 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 ) { - wxToolTip *tt = wndThis->GetToolTip(); - if ( tt ) + 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) ) { - tt->RelayEvent(wxmsg); + if ( !::PostMessage(hwndTop, WM_NULL, 0, 0) ) + { + // should never happen + wxLogLastError(wxT("PostMessage(WM_NULL)")); + } } } -#endif // wxUSE_TOOLTIPS - - // Try translations first; find the youngest window with - // a translation table. - wxWindow *wnd; - - 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; } -void wxApp::OnIdle(wxIdleEvent& event) -{ - static bool s_inOnIdle = FALSE; - - // Avoid recursion (via ProcessEvent default case) - if ( s_inOnIdle ) - return; - - s_inOnIdle = TRUE; +// ---------------------------------------------------------------------------- +// other wxApp event hanlders +// ---------------------------------------------------------------------------- - // If there are pending events, we must process them: pending events - // are either events to the threads other than main or events posted - // with wxPostEvent() functions - // GRG: I have moved this here so that all pending events are processed - // before starting to delete any objects. This behaves better (in - // particular, wrt wxPostEvent) and is coherent with wxGTK's current - // behaviour. Changed Feb/2000 before 2.1.14 - ProcessPendingEvents(); +void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event)) +{ + // 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 - // 'Garbage' collection of windows deleted with Close(). - DeletePendingObjects(); + // 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); -#if wxUSE_LOG - // flush the logged messages if any - wxLog::FlushActive(); -#endif // wxUSE_LOG + const int rc = OnExit(); - // Send OnIdle events to all windows - if ( SendIdleEvents() ) - { - // SendIdleEvents() returns TRUE if at least one window requested more - // idle events - event.RequestMore(TRUE); - } + wxEntryCleanup(); - s_inOnIdle = FALSE; + // 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); } -// Send idle event to all top-level windows -bool wxApp::SendIdleEvents() +// Default behaviour: close the application with prompts. The +// user can veto the close, and therefore the end session. +void wxApp::OnQueryEndSession(wxCloseEvent& event) { - bool needMore = FALSE; - - wxWindowList::Node* node = wxTopLevelWindows.GetFirst(); - while (node) + if (GetTopWindow()) { - wxWindow* win = node->GetData(); - if (SendIdleEvents(win)) - needMore = TRUE; - node = node->GetNext(); + if (!GetTopWindow()->Close(!event.CanVeto())) + event.Veto(true); } - - 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); +// ---------------------------------------------------------------------------- +// system DLL versions +// ---------------------------------------------------------------------------- - if (event.MoreRequested()) - needMore = TRUE; +// these functions have trivial inline implementations for CE +#ifndef __WXWINCE__ - wxNode* node = win->GetChildren().First(); - while (node) - { - wxWindow* win = (wxWindow*) node->Data(); - if (SendIdleEvents(win)) - needMore = TRUE; +#if wxUSE_DYNLIB_CLASS - node = node->Next(); - } - return needMore; -} +namespace +{ -void wxApp::DeletePendingObjects() +// helper function: retrieve the DLL version by using DllGetVersion(), returns +// 0 if the DLL doesn't export such function +int CallDllGetVersion(wxDynamicLibrary& dll) { - wxNode *node = wxPendingDelete.First(); - while (node) - { - wxObject *obj = (wxObject *)node->Data(); + // now check if the function is available during run-time + wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dll ); + if ( !pfnDllGetVersion ) + return 0; - delete obj; + DLLVERSIONINFO dvi; + dvi.cbSize = sizeof(dvi); - if (wxPendingDelete.Member(obj)) - delete node; + HRESULT hr = (*pfnDllGetVersion)(&dvi); + if ( FAILED(hr) ) + { + wxLogApiError(_T("DllGetVersion"), hr); - // Deleting one object may have deleted other pending - // objects, so start from beginning of list again. - node = wxPendingDelete.First(); + return 0; } -} -void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event)) -{ - if (GetTopWindow()) - GetTopWindow()->Close(TRUE); + return 100*dvi.dwMajorVersion + dvi.dwMinorVersion; } -// 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); - } -} +} // anonymous namespace /* static */ int wxApp::GetComCtl32Version() { // 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; - wxCRIT_SECT_DECLARE(csComCtl32); - wxCRIT_SECT_LOCKER(lock, csComCtl32); - 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? - HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32")); + // 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 ( hModuleComCtl32 ) + // if DllGetVersion() is unavailable either during compile or + // run-time, try to guess the version otherwise + if ( !s_verComCtl32 ) { - // try to use DllGetVersion() if available in _headers_ - #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h - DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC) - ::GetProcAddress(hModuleComCtl32, "DllGetVersion"); - if ( pfnDllGetVersion ) + // 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 ) { - 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 4.70 + s_verComCtl32 = 470; } - #endif - // DllGetVersion() unavailable either during compile or - // run-time, try to guess the version otherwise - if ( !s_verComCtl32 ) + else { - // InitCommonControlsEx is unique to 4.70 and later - FARPROC theProc = ::GetProcAddress - ( - hModuleComCtl32, - "InitCommonControlsEx" - ); - - if ( !theProc ) - { - // not found, must be 4.00 - s_verComCtl32 = 400; - } - else - { - // many symbols appeared in comctl32 4.71, could use - // any of them except may be DllInstall - theProc = ::GetProcAddress - ( - hModuleComCtl32, - "InitializeFlatSB" - ); - if ( !theProc ) - { - // not found, must be 4.70 - s_verComCtl32 = 470; - } - else - { - // found, must be 4.71 - s_verComCtl32 = 471; - } - } + // found, must be 4.71 or later + s_verComCtl32 = 471; } + } } } return s_verComCtl32; } -void wxExit() +/* static */ +int wxApp::GetShell32Version() { - wxLogError(_("Fatal error: exiting")); + 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; + } + } - wxApp::CleanUp(); - exit(0); + return s_verShell32; } -// Yield to incoming messages +#else // !wxUSE_DYNLIB_CLASS + +/* static */ +int wxApp::GetComCtl32Version() +{ + return 0; +} -static bool gs_inYield = FALSE; +/* static */ +int wxApp::GetShell32Version() +{ + return 0; +} + +#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS + +#endif // !__WXWINCE__ + +// ---------------------------------------------------------------------------- +// Yield to incoming messages +// ---------------------------------------------------------------------------- -bool wxYield() +bool wxApp::Yield(bool onlyIfNeeded) { + // MT-FIXME + static bool s_inYield = false; + + if ( s_inYield ) + { + if ( !onlyIfNeeded ) + { + wxFAIL_MSG( wxT("wxYield called recursively" ) ); + } + + return false; + } + + // set the flag and don't forget to reset it before returning + s_inYield = true; + wxON_BLOCK_EXIT_SET(s_inYield, false); + + +#if wxUSE_LOG // disable log flushing from here because a call to wxYield() shouldn't // normally result in message boxes popping up &c wxLog::Suspend(); -#ifdef __WXDEBUG__ - if (gs_inYield) - wxFAIL_MSG( wxT("wxYield called recursively" ) ); -#endif + // ensure the logs will be flashed again when we exit + wxON_BLOCK_EXIT0(wxLog::Resume); +#endif // wxUSE_LOG - gs_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 + wxEventLoopGuarantor dummyLoopIfNeeded; MSG msg; while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT ) @@ -1306,94 +1104,53 @@ bool wxYield() wxMutexGuiLeaveOrEnter(); #endif // wxUSE_THREADS - if ( !wxTheApp->DoMessage() ) + if ( !wxTheApp->Dispatch() ) break; } - // If they are pending events, we must process them. - if (wxTheApp) - wxTheApp->ProcessPendingEvents(); - - // let the logs be flashed again - wxLog::Resume(); - - gs_inYield = FALSE; - - return TRUE; -} - -// Yield to incoming messages; but fail silently if recursion is detected. -bool wxYieldIfNeeded() -{ - if (gs_inYield) - return FALSE; - - return wxYield(); -} - -bool wxHandleFatalExceptions(bool doit) -{ -#if wxUSE_ON_FATAL_EXCEPTION - // assume this can only be called from the main thread - gs_handleExceptions = doit; + // if there are pending events, we must process them. + ProcessPendingEvents(); - return TRUE; -#else - wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to sue this function")); - - (void)doit; - return FALSE; -#endif + return true; } -//----------------------------------------------------------------------------- -// wxWakeUpIdle -//----------------------------------------------------------------------------- +#if wxUSE_EXCEPTIONS -void wxWakeUpIdle() -{ - // Send the top window a dummy message so idle handler processing will - // start up again. Doing it this way ensures that the idle handler - // wakes up in the right thread (see also wxWakeUpMainThread() which does - // the same for the main app thread only) - wxWindow *topWindow = wxTheApp->GetTopWindow(); - if ( topWindow ) - { - if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) ) - { - // should never happen - wxLogLastError(wxT("PostMessage(WM_NULL)")); - } - } -} - -//----------------------------------------------------------------------------- +// ---------------------------------------------------------------------------- +// exception handling +// ---------------------------------------------------------------------------- -wxIcon -wxApp::GetStdIcon(int which) const +bool wxApp::OnExceptionInMainLoop() { - switch(which) + // 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 wxICON_INFORMATION: - return wxIcon("wxICON_INFO"); - - case wxICON_QUESTION: - return wxIcon("wxICON_QUESTION"); - - case wxICON_EXCLAMATION: - return wxIcon("wxICON_WARNING"); + case IDABORT: + throw; default: - wxFAIL_MSG(wxT("requested non existent standard icon")); - // still fall through + wxFAIL_MSG( _T("unexpected MessageBox() return code") ); + // fall through + + case IDRETRY: + return false; - case wxICON_HAND: - return wxIcon("wxICON_ERROR"); + case IDIGNORE: + return true; } } -// For some reason, with MSVC++ 1.5, WinMain isn't linked in properly -// if in a separate file. So include it here to ensure it's linked. -#if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL)) -#include "main.cpp" -#endif +#endif // wxUSE_EXCEPTIONS