X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8907154c1a8a6882c6797d1f16393ddfb23e7f3a..697c314b162ff4758db0047e548d5401994d2c70:/src/msw/app.cpp diff --git a/src/msw/app.cpp b/src/msw/app.cpp index b6cbc4c8a8..ae797329c2 100644 --- a/src/msw/app.cpp +++ b/src/msw/app.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: app.cpp +// Name: src/msw/app.cpp // Purpose: wxApp // Author: Julian Smart // Modified by: @@ -25,6 +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" @@ -38,19 +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/apptrait.h" #include "wx/filename.h" -#include "wx/module.h" #include "wx/dynlib.h" +#include "wx/evtloop.h" +#include "wx/thread.h" +#include "wx/scopeguard.h" #include "wx/msw/private.h" +#include "wx/msw/dc.h" #include "wx/msw/ole/oleutils.h" +#include "wx/msw/private/timer.h" #if wxUSE_TOOLTIPS #include "wx/tooltip.h" @@ -58,7 +63,7 @@ // OLE is used for drag-and-drop, clipboard, OLE Automation..., but some // compilers don't support it (missing headers, libs, ...) -#if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__) || defined(__SALFORDC__) +#if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__) #undef wxUSE_OLE #define wxUSE_OLE 0 @@ -76,12 +81,7 @@ #include #include -#include "wx/msw/wrapcctl.h" - -// For MB_TASKMODAL -#ifdef __WXWINCE__ -#include "wx/msw/wince/missing.h" -#endif +#include "wx/msw/missing.h" // instead of including which is not part of the core SDK and not // shipped at all with other compilers, we always define the parts of it we @@ -104,13 +104,14 @@ typedef HRESULT (CALLBACK* DLLGETVERSIONPROC)(DLLVERSIONINFO *); #endif // defined(DLLVERSIONINFO) +#ifndef ATTACH_PARENT_PROCESS + #define ATTACH_PARENT_PROCESS ((DWORD)-1) +#endif // --------------------------------------------------------------------------- // global variables // --------------------------------------------------------------------------- -extern wxList WXDLLEXPORT wxPendingDelete; - #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) extern void wxSetKeyboardHook(bool doIt); #endif @@ -121,13 +122,13 @@ extern void wxSetKeyboardHook(bool doIt); WXDLLIMPEXP_CORE wxChar *wxCanvasClassName; WXDLLIMPEXP_CORE wxChar *wxCanvasClassNameNR; #else -WXDLLIMPEXP_CORE const wxChar *wxCanvasClassName = wxT("wxWindowClass"); -WXDLLIMPEXP_CORE const wxChar *wxCanvasClassNameNR = wxT("wxWindowClassNR"); +WXDLLIMPEXP_CORE const wxChar *wxCanvasClassName = NULL; +WXDLLIMPEXP_CORE const wxChar *wxCanvasClassNameNR = NULL; #endif -WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassName = wxT("wxMDIFrameClass"); -WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR"); -WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass"); -WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR"); +WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassName = NULL; +WXDLLIMPEXP_CORE const wxChar *wxMDIFrameClassNameNoRedraw = NULL; +WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassName = NULL; +WXDLLIMPEXP_CORE const wxChar *wxMDIChildFrameClassNameNoRedraw = NULL; // ---------------------------------------------------------------------------- // private functions @@ -218,25 +219,357 @@ bool wxGUIAppTraits::DoMessageFromThreadWait() { // we should return false only if the app should exit, i.e. only if // Dispatch() determines that the main event loop should terminate - return !wxTheApp || wxTheApp->Dispatch(); + wxEventLoopBase * const evtLoop = wxEventLoop::GetActive(); + if ( !evtLoop || !evtLoop->Pending() ) + { + // no events means no quit event + return true; + } + + return evtLoop->Dispatch(); } -wxToolkitInfo& wxGUIAppTraits::GetToolkitInfo() +DWORD wxGUIAppTraits::WaitForThread(WXHANDLE hThread) { - static wxToolkitInfo info; - wxToolkitInfo& baseInfo = wxAppTraits::GetToolkitInfo(); - info.versionMajor = baseInfo.versionMajor; - info.versionMinor = baseInfo.versionMinor; - info.os = baseInfo.os; - info.shortName = _T("msw"); - info.name = _T("wxMSW"); -#ifdef __WXUNIVERSAL__ - info.shortName << _T("univ"); - info.name << _T("/wxUniversal"); + // 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 + ); +} + +wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const +{ + OSVERSIONINFO info; + wxZeroMemory(info); + + // on Windows, the toolkit version is the same of the OS version + // as Windows integrates the OS kernel with the GUI toolkit. + info.dwOSVersionInfoSize = sizeof(OSVERSIONINFO); + if ( ::GetVersionEx(&info) ) + { + if ( majVer ) + *majVer = info.dwMajorVersion; + if ( minVer ) + *minVer = info.dwMinorVersion; + } + +#if defined(__WXHANDHELD__) || defined(__WXWINCE__) + return wxPORT_WINCE; +#else + return wxPORT_MSW; #endif - return info; } +#if wxUSE_TIMER + +wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer) +{ + return new wxMSWTimerImpl(timer); +} + +#endif // wxUSE_TIMER + +wxEventLoopBase* wxGUIAppTraits::CreateEventLoop() +{ + return new wxEventLoop; +} + +// --------------------------------------------------------------------------- +// Stuff for using console from the GUI applications +// --------------------------------------------------------------------------- + +#ifndef __WXWINCE__ + +#include + +namespace +{ + +/* + Helper class to manipulate console from a GUI app. + + 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 + + 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; + + m_ok = -1; + } + + ~wxConsoleStderr() + { + if ( m_hStderr != INVALID_HANDLE_VALUE ) + { + if ( !::FreeConsole() ) + { + wxLogLastError(_T("FreeConsole")); + } + } + } + + // 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 + { + 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 m_ok && IsHistoryUnchanged(); + } + + + // output the provided text on the console, return true if ok + bool Write(const wxString& text); + +private: + // called by Init() once only to do the real initialization + bool DoInit(); + + // retrieve the command line history into the provided buffer and return + // its length + int GetCommandHistory(wxWxCharBuffer& buf) const; + + // check if the console history has changed + bool IsHistoryUnchanged() const; + + int m_ok; // initially -1, set to true or false by Init() + + wxDynamicLibrary m_dllKernel32; + + HANDLE m_hStderr; // console handle, if it's valid we must call + // FreeConsole() (even if m_ok != 1) + + wxWxCharBuffer m_history; // command history on startup + int m_historyLen; // length command history buffer + + wxCharBuffer m_data; // data between empty line and cursor position + int m_dataLen; // length data buffer + int m_dataLine; // line offset + + typedef DWORD (WINAPI *GetConsoleCommandHistory_t)(LPTSTR sCommands, + DWORD nBufferLength, + LPCTSTR sExeName); + typedef DWORD (WINAPI *GetConsoleCommandHistoryLength_t)(LPCTSTR sExeName); + + GetConsoleCommandHistory_t m_pfnGetConsoleCommandHistory; + GetConsoleCommandHistoryLength_t m_pfnGetConsoleCommandHistoryLength; + + DECLARE_NO_COPY_CLASS(wxConsoleStderr) +}; + +bool wxConsoleStderr::DoInit() +{ + HANDLE hStderr = ::GetStdHandle(STD_ERROR_HANDLE); + + if ( hStderr == INVALID_HANDLE_VALUE || !hStderr ) + return false; + + if ( !m_dllKernel32.Load(_T("kernel32.dll")) ) + return false; + + typedef BOOL (WINAPI *AttachConsole_t)(DWORD dwProcessId); + AttachConsole_t wxDL_INIT_FUNC(pfn, AttachConsole, m_dllKernel32); + + if ( !pfnAttachConsole || !pfnAttachConsole(ATTACH_PARENT_PROCESS) ) + return false; + + // console attached, set m_hStderr now to ensure that we free it in the + // dtor + m_hStderr = hStderr; + + wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistory, m_dllKernel32); + if ( !m_pfnGetConsoleCommandHistory ) + return false; + + wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistoryLength, m_dllKernel32); + if ( !m_pfnGetConsoleCommandHistoryLength ) + return false; + + // 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; + + + // now find the first blank line above the current position + CONSOLE_SCREEN_BUFFER_INFO csbi; + + if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) ) + { + wxLogLastError(_T("GetConsoleScreenBufferInfo")); + return false; + } + + COORD pos; + pos.X = 0; + pos.Y = csbi.dwCursorPosition.Y + 1; + + // 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 ); + + // calculate line offset and length of data + m_dataLine = csbi.dwCursorPosition.Y - pos.Y; + m_dataLen = m_dataLine*csbi.dwMaximumWindowSize.X + csbi.dwCursorPosition.X; + + 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; + } + } + + return true; +} + +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"); + + const int len = m_pfnGetConsoleCommandHistoryLength(CMD_EXE); + if ( len ) + { + buf.extend(len); + + int len2 = m_pfnGetConsoleCommandHistory(buf.data(), len, CMD_EXE); + +#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 ( len2 != len ) + { + wxFAIL_MSG( _T("failed getting history?") ); + } + } + + return len; +} + +bool wxConsoleStderr::IsHistoryUnchanged() const +{ + wxASSERT_MSG( m_ok == 1, _T("shouldn't be called if not initialized") ); + + // get (possibly changed) command history + wxWxCharBuffer history; + const int historyLen = GetCommandHistory(history); + + // and compare it with the original one + return historyLen == m_historyLen && history && + memcmp(m_history, history, historyLen) == 0; +} + +bool wxConsoleStderr::Write(const wxString& text) +{ + wxASSERT_MSG( m_hStderr != INVALID_HANDLE_VALUE, + _T("should only be called if Init() returned true") ); + + // get current position + CONSOLE_SCREEN_BUFFER_INFO csbi; + if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) ) + { + wxLogLastError(_T("GetConsoleScreenBufferInfo")); + return false; + } + + // and calculate new position (where is empty line) + csbi.dwCursorPosition.X = 0; + csbi.dwCursorPosition.Y -= m_dataLine; + + if ( !::SetConsoleCursorPosition(m_hStderr, csbi.dwCursorPosition) ) + { + wxLogLastError(_T("SetConsoleCursorPosition")); + return false; + } + + DWORD ret; + if ( !::FillConsoleOutputCharacter(m_hStderr, _T(' '), m_dataLen, + csbi.dwCursorPosition, &ret) ) + { + wxLogLastError(_T("FillConsoleOutputCharacter")); + return false; + } + + if ( !::WriteConsole(m_hStderr, text.wx_str(), text.length(), &ret, NULL) ) + { + wxLogLastError(_T("WriteConsole")); + return false; + } + + WriteConsoleA(m_hStderr, m_data, m_dataLen, &ret, 0); + + return true; +} + +wxConsoleStderr s_consoleStderr; + +} // anonymous namespace + +bool wxGUIAppTraits::CanUseStderr() +{ + return s_consoleStderr.IsOkToUse(); +} + +bool wxGUIAppTraits::WriteToStderr(const wxString& text) +{ + return s_consoleStderr.IsOkToUse() && s_consoleStderr.Write(text); +} + +#endif // !__WXWINCE__ + // =========================================================================== // wxApp implementation // =========================================================================== @@ -281,9 +614,9 @@ bool wxApp::Initialize(int& argc, wxChar **argv) #ifdef __WXWINCE__ wxString tmp = GetAppName(); tmp += wxT("ClassName"); - wxCanvasClassName = wxStrdup( tmp.c_str() ); + wxCanvasClassName = wxStrdup( tmp.wc_str() ); tmp += wxT("NR"); - wxCanvasClassNameNR = wxStrdup( tmp.c_str() ); + wxCanvasClassNameNR = wxStrdup( tmp.wc_str() ); HWND hWnd = FindWindow( wxCanvasClassNameNR, NULL ); if (hWnd) { @@ -292,20 +625,24 @@ bool wxApp::Initialize(int& argc, wxChar **argv) } #endif -#if defined(__WIN95__) && !defined(__WXMICROWIN__) +#if !defined(__WXMICROWIN__) InitCommonControls(); -#endif // __WIN95__ +#endif // !defined(__WXMICROWIN__) #if defined(__SMARTPHONE__) || defined(__POCKETPC__) SHInitExtraControls(); #endif +#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 + wxOleInitialize(); RegisterWindowClasses(); - wxWinHandleHash = new wxWinHashTable(wxKEY_INTEGER, 100); - #if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) wxSetKeyboardHook(true); #endif @@ -319,6 +656,54 @@ bool wxApp::Initialize(int& argc, wxChar **argv) // RegisterWindowClasses // --------------------------------------------------------------------------- +// 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) +{ + const size_t length = uniqueClassName.length() + 1; // for trailing NUL + wxChar *newChars = new wxChar[length]; + wxStrncpy(newChars, uniqueClassName, length); + *className = newChars; + lpWndClass->lpszClassName = *className; + + if ( !::RegisterClass(lpWndClass) ) + { + wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"), newChars)); + } +} + +// 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; + + const wxString uniqueSuffix(wxString::Format(wxT("@%p"), className)); + + wxString uniqueClassName(baseName + uniqueSuffix); + lpWndClass->style = styleNormal; + RegisterAndStoreClassName(uniqueClassName, className, lpWndClass); + + // 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); +} + // 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. @@ -327,72 +712,31 @@ bool wxApp::RegisterWindowClasses() WNDCLASS wndclass; wxZeroMemory(wndclass); - // for each class we register one with CS_(V|H)REDRAW style and one - // without for windows created with wxNO_FULL_REDRAW_ON_REPAINT flag - static const long styleNormal = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS; - static const long styleNoRedraw = CS_DBLCLKS; - // the fields which are common to all classes wndclass.lpfnWndProc = (WNDPROC)wxWndProc; wndclass.hInstance = wxhInstance; wndclass.hCursor = ::LoadCursor((HINSTANCE)NULL, IDC_ARROW); - // register the class for all normal windows + // register the class for all normal windows and "no redraw" frames wndclass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1); - wndclass.lpszClassName = wxCanvasClassName; - wndclass.style = styleNormal; - - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(frame)")); - } - - // "no redraw" frame - wndclass.lpszClassName = wxCanvasClassNameNR; - wndclass.style = styleNoRedraw; - - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(no redraw frame)")); - } + RegisterClassWithUniqueNames(wxT("wxWindowClass"), + &wxCanvasClassName, + &wxCanvasClassNameNR, + &wndclass); - // Register the MDI frame window class. + // Register the MDI frame window class and "no redraw" MDI frame wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves - wndclass.lpszClassName = wxMDIFrameClassName; - wndclass.style = styleNormal; - - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(MDI parent)")); - } - - // "no redraw" MDI frame - wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw; - wndclass.style = styleNoRedraw; + RegisterClassWithUniqueNames(wxT("wxMDIFrameClass"), + &wxMDIFrameClassName, + &wxMDIFrameClassNameNoRedraw, + &wndclass); - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(no redraw MDI parent frame)")); - } - - // Register the MDI child frame window class. + // Register the MDI child frame window class and "no redraw" MDI child frame wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1); - wndclass.lpszClassName = wxMDIChildFrameClassName; - wndclass.style = styleNormal; - - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(MDI child)")); - } - - // "no redraw" MDI child frame - wndclass.lpszClassName = wxMDIChildFrameClassNameNoRedraw; - wndclass.style = styleNoRedraw; - - if ( !RegisterClass(&wndclass) ) - { - wxLogLastError(wxT("RegisterClass(no redraw MDI child)")); - } + RegisterClassWithUniqueNames(wxT("wxMDIChildFrameClass"), + &wxMDIChildFrameClassName, + &wxMDIChildFrameClassNameNoRedraw, + &wndclass); return true; } @@ -401,57 +745,48 @@ bool wxApp::RegisterWindowClasses() // UnregisterWindowClasses // --------------------------------------------------------------------------- -bool wxApp::UnregisterWindowClasses() +// This function unregisters the class with the given name and frees memory +// allocated for it by RegisterAndStoreClassName(). +static bool UnregisterAndFreeClassName(const wxChar **ppClassName) { bool retval = true; -#ifndef __WXMICROWIN__ - // MDI frame window class. - if ( !::UnregisterClass(wxMDIFrameClassName, wxhInstance) ) + if ( !::UnregisterClass(*ppClassName, wxhInstance) ) { - wxLogLastError(wxT("UnregisterClass(MDI parent)")); + wxLogLastError( + wxString::Format(wxT("UnregisterClass(%s)"), *ppClassName)); retval = false; } - // "no redraw" MDI frame - if ( !::UnregisterClass(wxMDIFrameClassNameNoRedraw, wxhInstance) ) - { - wxLogLastError(wxT("UnregisterClass(no redraw MDI parent frame)")); + delete [] (wxChar*) *ppClassName; + *ppClassName = NULL; - retval = false; - } + return retval; +} - // MDI child frame window class. - if ( !::UnregisterClass(wxMDIChildFrameClassName, wxhInstance) ) - { - wxLogLastError(wxT("UnregisterClass(MDI child)")); +bool wxApp::UnregisterWindowClasses() +{ + bool retval = true; +#ifndef __WXMICROWIN__ + if ( !UnregisterAndFreeClassName(&wxMDIFrameClassName) ) retval = false; - } - - // "no redraw" MDI child frame - if ( !::UnregisterClass(wxMDIChildFrameClassNameNoRedraw, wxhInstance) ) - { - wxLogLastError(wxT("UnregisterClass(no redraw MDI child)")); + if ( !UnregisterAndFreeClassName(&wxMDIFrameClassNameNoRedraw) ) retval = false; - } - // canvas class name - if ( !::UnregisterClass(wxCanvasClassName, wxhInstance) ) - { - wxLogLastError(wxT("UnregisterClass(canvas)")); + if ( !UnregisterAndFreeClassName(&wxMDIChildFrameClassName) ) + retval = false; + if ( !UnregisterAndFreeClassName(&wxMDIChildFrameClassNameNoRedraw) ) retval = false; - } - if ( !::UnregisterClass(wxCanvasClassNameNR, wxhInstance) ) - { - wxLogLastError(wxT("UnregisterClass(no redraw canvas)")); + if ( !UnregisterAndFreeClassName(&wxCanvasClassName) ) + retval = false; + if ( !UnregisterAndFreeClassName(&wxCanvasClassNameNR) ) retval = false; - } #endif // __WXMICROWIN__ return retval; @@ -459,10 +794,10 @@ bool wxApp::UnregisterWindowClasses() void wxApp::CleanUp() { - // all objects pending for deletion must be deleted first, otherwise we - // would crash when they use wxWinHandleHash (and UnregisterWindowClasses() - // call wouldn't succeed as long as any windows still exist), so call the - // base class method first and only then do our clean up + // 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__) @@ -477,9 +812,6 @@ void wxApp::CleanUp() // unregister the classes now UnregisterWindowClasses(); - delete wxWinHandleHash; - wxWinHandleHash = NULL; - #ifdef __WXWINCE__ free( wxCanvasClassName ); free( wxCanvasClassNameNR ); @@ -497,33 +829,20 @@ wxApp::wxApp() wxApp::~wxApp() { - // our cmd line arguments are allocated inside wxEntry(HINSTANCE), they - // don't come from main(), so we have to free them - - while ( argc ) - { - // m_argv elements were allocated by wxStrdup() - free(argv[--argc]); - } - - // but m_argv itself -- using new[] - delete [] argv; } // ---------------------------------------------------------------------------- // wxApp idle handling // ---------------------------------------------------------------------------- -void wxApp::OnIdle(wxIdleEvent& event) +void wxApp::OnIdle(wxIdleEvent& WXUNUSED(event)) { - wxAppBase::OnIdle(event); - #if wxUSE_DC_CACHEING // automated DC cache management: clear the cached DCs and bitmap // if it's likely that the app has finished with them, that is, we // get an idle event and we're not dragging anything. if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON)) - wxDC::ClearCache(); + wxMSWDCImpl::ClearCache(); #endif // wxUSE_DC_CACHEING } @@ -533,13 +852,28 @@ void wxApp::WakeUpIdle() // start up again. Doing it this way ensures that the idle handler // wakes up in the right thread (see also wxWakeUpMainThread() which does // the same for the main app thread only) - wxWindow *topWindow = wxTheApp->GetTopWindow(); + wxWindow * const topWindow = wxTheApp->GetTopWindow(); if ( topWindow ) { - if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) ) + HWND hwndTop = GetHwndOf(topWindow); + + // Do not post WM_NULL if there's already a pending WM_NULL to avoid + // overflowing the message queue. + // + // Notice that due to a limitation of PeekMessage() API (which handles + // 0,0 range specially), we have to check the range from 0-1 instead. + // This still makes it possible to overflow the queue with WM_NULLs by + // interspersing the calles to WakeUpIdle() with windows creation but + // it should be rather hard to do it accidentally. + MSG msg; + if ( !::PeekMessage(&msg, hwndTop, 0, 1, PM_NOREMOVE) || + ::PeekMessage(&msg, hwndTop, 1, 1, PM_NOREMOVE) ) { - // should never happen - wxLogLastError(wxT("PostMessage(WM_NULL)")); + if ( !::PostMessage(hwndTop, WM_NULL, 0, 0) ) + { + // should never happen + wxLogLastError(wxT("PostMessage(WM_NULL)")); + } } } } @@ -550,8 +884,24 @@ void wxApp::WakeUpIdle() 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 @@ -566,15 +916,45 @@ void wxApp::OnQueryEndSession(wxCloseEvent& event) } // ---------------------------------------------------------------------------- -// miscellaneous +// system DLL versions // ---------------------------------------------------------------------------- +// these functions have trivial inline implementations for CE +#ifndef __WXWINCE__ + +#if wxUSE_DYNLIB_CLASS + +namespace +{ + +// helper function: retrieve the DLL version by using DllGetVersion(), returns +// 0 if the DLL doesn't export such function +int CallDllGetVersion(wxDynamicLibrary& dll) +{ + // now check if the function is available during run-time + wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dll ); + if ( !pfnDllGetVersion ) + return 0; + + DLLVERSIONINFO dvi; + dvi.cbSize = sizeof(dvi); + + HRESULT hr = (*pfnDllGetVersion)(&dvi); + if ( FAILED(hr) ) + { + wxLogApiError(_T("DllGetVersion"), hr); + + return 0; + } + + return 100*dvi.dwMajorVersion + dvi.dwMinorVersion; +} + +} // anonymous namespace + /* static */ int wxApp::GetComCtl32Version() { -#if defined(__WXMICROWIN__) || defined(__WXWINCE__) - return 0; -#else // cache the result // // NB: this is MT-ok as in the worst case we'd compute s_verComCtl32 twice, @@ -583,88 +963,111 @@ int wxApp::GetComCtl32Version() if ( s_verComCtl32 == -1 ) { - // initally assume no comctl32.dll at all - s_verComCtl32 = 0; - // we're prepared to handle the errors wxLogNull noLog; - // do we have it? + // the DLL should really be available wxDynamicLibrary dllComCtl32(_T("comctl32.dll"), wxDL_VERBATIM); + if ( !dllComCtl32.IsLoaded() ) + { + s_verComCtl32 = 0; + return 0; + } + + // try DllGetVersion() for recent DLLs + s_verComCtl32 = CallDllGetVersion(dllComCtl32); - // if so, then we can check for the version - if ( dllComCtl32.IsLoaded() ) + // if DllGetVersion() is unavailable either during compile or + // run-time, try to guess the version otherwise + if ( !s_verComCtl32 ) { - // now check if the function is available during run-time - wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dllComCtl32 ); - if ( pfnDllGetVersion ) + // InitCommonControlsEx is unique to 4.70 and later + void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx")); + if ( !pfn ) { - DLLVERSIONINFO dvi; - dvi.cbSize = sizeof(dvi); - - HRESULT hr = (*pfnDllGetVersion)(&dvi); - if ( FAILED(hr) ) - { - wxLogApiError(_T("DllGetVersion"), hr); - } - else - { - // this is incompatible with _WIN32_IE values, but - // compatible with the other values returned by - // GetComCtl32Version() - s_verComCtl32 = 100*dvi.dwMajorVersion + - dvi.dwMinorVersion; - } + // not found, must be 4.00 + s_verComCtl32 = 400; } - - // if DllGetVersion() is unavailable either during compile or - // run-time, try to guess the version otherwise - if ( !s_verComCtl32 ) + else // 4.70+ { - // InitCommonControlsEx is unique to 4.70 and later - void *pfn = dllComCtl32.GetSymbol(_T("InitCommonControlsEx")); + // many symbols appeared in comctl32 4.71, could use any of + // them except may be DllInstall() + pfn = dllComCtl32.GetSymbol(_T("InitializeFlatSB")); if ( !pfn ) { - // not found, must be 4.00 - s_verComCtl32 = 400; + // not found, must be 4.70 + s_verComCtl32 = 470; } - else // 4.70+ + else { - // many symbols appeared in comctl32 4.71, could use any of - // them except may be DllInstall() - pfn = dllComCtl32.GetSymbol(_T("InitializeFlatSB")); - if ( !pfn ) - { - // not found, must be 4.70 - s_verComCtl32 = 470; - } - else - { - // found, must be 4.71 or later - s_verComCtl32 = 471; - } + // found, must be 4.71 or later + s_verComCtl32 = 471; } } } } return s_verComCtl32; -#endif // Microwin/!Microwin } +/* static */ +int wxApp::GetShell32Version() +{ + static int s_verShell32 = -1; + if ( s_verShell32 == -1 ) + { + // we're prepared to handle the errors + wxLogNull noLog; + + wxDynamicLibrary dllShell32(_T("shell32.dll"), wxDL_VERBATIM); + if ( dllShell32.IsLoaded() ) + { + s_verShell32 = CallDllGetVersion(dllShell32); + + if ( !s_verShell32 ) + { + // there doesn't seem to be any way to distinguish between 4.00 + // and 4.70 (starting from 4.71 we have DllGetVersion()) so + // just assume it is 4.0 + s_verShell32 = 400; + } + } + else // failed load the DLL? + { + s_verShell32 = 0; + } + } + + return s_verShell32; +} + +#else // !wxUSE_DYNLIB_CLASS + +/* static */ +int wxApp::GetComCtl32Version() +{ + return 0; +} + +/* static */ +int wxApp::GetShell32Version() +{ + return 0; +} + +#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS + +#endif // !__WXWINCE__ + +// ---------------------------------------------------------------------------- // Yield to incoming messages +// ---------------------------------------------------------------------------- bool wxApp::Yield(bool onlyIfNeeded) { // MT-FIXME static bool s_inYield = false; -#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(); -#endif // wxUSE_LOG - if ( s_inYield ) { if ( !onlyIfNeeded ) @@ -675,10 +1078,24 @@ bool wxApp::Yield(bool onlyIfNeeded) 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(); + + // ensure the logs will be flashed again when we exit + wxON_BLOCK_EXIT0(wxLog::Resume); +#endif // wxUSE_LOG + // 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 ) @@ -694,13 +1111,6 @@ bool wxApp::Yield(bool onlyIfNeeded) // if there are pending events, we must process them. ProcessPendingEvents(); -#if wxUSE_LOG - // let the logs be flashed again - wxLog::Resume(); -#endif // wxUSE_LOG - - s_inYield = false; - return true; } @@ -723,7 +1133,7 @@ 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_ICONERROR| MB_TASKMODAL ) ) @@ -744,33 +1154,3 @@ terminate the program,\r\n\ } #endif // wxUSE_EXCEPTIONS - -// ---------------------------------------------------------------------------- -// deprecated event loop functions -// ---------------------------------------------------------------------------- - -#if WXWIN_COMPATIBILITY_2_4 - -#include "wx/evtloop.h" - -void wxApp::DoMessage(WXMSG *pMsg) -{ - wxEventLoop *evtLoop = wxEventLoop::GetActive(); - if ( evtLoop ) - evtLoop->ProcessMessage(pMsg); -} - -bool wxApp::DoMessage() -{ - wxEventLoop *evtLoop = wxEventLoop::GetActive(); - return evtLoop ? evtLoop->Dispatch() : false; -} - -bool wxApp::ProcessMessage(WXMSG* pMsg) -{ - wxEventLoop *evtLoop = wxEventLoop::GetActive(); - return evtLoop && evtLoop->PreProcessMessage(pMsg); -} - -#endif // WXWIN_COMPATIBILITY_2_4 -