X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a5e0e655cb829a0112e1eecdf9ce4bede79cae80..1ecc323f2609c8afea31948b9eac2d965cc84f5e:/src/msw/app.cpp diff --git a/src/msw/app.cpp b/src/msw/app.cpp index e7a3e6210b..8df236020f 100644 --- a/src/msw/app.cpp +++ b/src/msw/app.cpp @@ -1,992 +1,1065 @@ ///////////////////////////////////////////////////////////////////////////// -// 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 ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ - #pragma implementation "app.h" -#endif +// =========================================================================== +// declarations +// =========================================================================== + +// --------------------------------------------------------------------------- +// headers +// --------------------------------------------------------------------------- // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #if defined(__BORLANDC__) - #pragma hdrstop + #pragma hdrstop #endif #ifndef WX_PRECOMP - #include "wx/frame.h" - #include "wx/app.h" - #include "wx/utils.h" - #include "wx/gdicmn.h" - #include "wx/pen.h" - #include "wx/brush.h" - #include "wx/cursor.h" - #include "wx/icon.h" - #include "wx/palette.h" - #include "wx/dc.h" - #include "wx/dialog.h" - #include "wx/msgdlg.h" + #include "wx/msw/wrapcctl.h" + #include "wx/dynarray.h" + #include "wx/frame.h" + #include "wx/app.h" + #include "wx/utils.h" + #include "wx/gdicmn.h" + #include "wx/pen.h" + #include "wx/brush.h" + #include "wx/cursor.h" + #include "wx/icon.h" + #include "wx/palette.h" + #include "wx/dc.h" + #include "wx/dialog.h" + #include "wx/msgdlg.h" + #include "wx/intl.h" + #include "wx/crt.h" + #include "wx/log.h" + #include "wx/module.h" #endif +#include "wx/apptrait.h" +#include "wx/filename.h" +#include "wx/dynlib.h" +#include "wx/evtloop.h" +#include "wx/thread.h" +#include "wx/scopeguard.h" +#include "wx/vector.h" + #include "wx/msw/private.h" -#include "wx/postscrp.h" -#include "wx/log.h" -#include "wx/module.h" +#include "wx/msw/dc.h" +#include "wx/msw/ole/oleutils.h" +#include "wx/msw/private/timer.h" -#if USE_WX_RESOURCES - #include "wx/resource.h" -#endif +#if wxUSE_TOOLTIPS + #include "wx/tooltip.h" +#endif // wxUSE_TOOLTIPS -#include -#include +// OLE is used for drag-and-drop, clipboard, OLE Automation..., but some +// compilers don't support it (missing headers, libs, ...) +#if defined(__GNUWIN32_OLD__) || defined(__SYMANTEC__) + #undef wxUSE_OLE -#if defined(__WIN95__) && !defined(__GNUWIN32__) - #include -#endif + #define wxUSE_OLE 0 +#endif // broken compilers -// use debug CRT functions for memory leak detections in VC++ -#if defined(__WXDEBUG__) && defined(_MSC_VER) - // VC++ uses this macro as debug/release mode indicator - #ifndef _DEBUG - #define _DEBUG - #endif +#if defined(__POCKETPC__) || defined(__SMARTPHONE__) + #include + #include +#endif - #include +#if wxUSE_OLE + #include #endif -extern char *wxBuffer; -extern char *wxOsVersion; -extern wxList *wxWinHandleList; -extern wxList wxPendingDelete; -extern void wxSetKeyboardHook(bool doIt); -extern wxCursor *g_globalCursor; +#include +#include -HINSTANCE wxhInstance = 0; -static MSG s_currentMsg; -wxApp *wxTheApp = NULL; +#include "wx/msw/missing.h" + +// instead of including which is not part of the core SDK and not +// shipped at all with other compilers, we always define the parts of it we +// need here ourselves +// +// NB: DLLVER_PLATFORM_WINDOWS will be defined if shlwapi.h had been somehow +// included already +#ifndef DLLVER_PLATFORM_WINDOWS + // hopefully we don't need to change packing as DWORDs should be already + // correctly aligned + struct DLLVERSIONINFO + { + DWORD cbSize; + DWORD dwMajorVersion; // Major version + DWORD dwMinorVersion; // Minor version + DWORD dwBuildNumber; // Build number + DWORD dwPlatformID; // DLLVER_PLATFORM_* + }; + + typedef HRESULT (CALLBACK* DLLGETVERSIONPROC)(DLLVERSIONINFO *); +#endif // defined(DLLVERSIONINFO) + +#ifndef ATTACH_PARENT_PROCESS + #define ATTACH_PARENT_PROCESS ((DWORD)-1) +#endif -// @@ why not const? and not static? -char wxFrameClassName[] = "wxFrameClass"; -char wxMDIFrameClassName[] = "wxMDIFrameClass"; -char wxMDIChildFrameClassName[] = "wxMDIChildFrameClass"; -char wxPanelClassName[] = "wxPanelClass"; -char wxCanvasClassName[] = "wxCanvasClass"; +// --------------------------------------------------------------------------- +// global variables +// --------------------------------------------------------------------------- -HICON wxSTD_FRAME_ICON = NULL; -HICON wxSTD_MDICHILDFRAME_ICON = NULL; -HICON wxSTD_MDIPARENTFRAME_ICON = NULL; +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) +extern void wxSetKeyboardHook(bool doIt); +#endif -HICON wxDEFAULT_FRAME_ICON = NULL; -HICON wxDEFAULT_MDICHILDFRAME_ICON = NULL; -HICON wxDEFAULT_MDIPARENTFRAME_ICON = NULL; +// because of mingw32 4.3 bug this struct can't be inside the namespace below: +// see http://article.gmane.org/gmane.comp.lib.wxwidgets.devel/110282 +struct ClassRegInfo +{ + ClassRegInfo(const wxChar *name) + : regname(name), + regnameNR(regname + wxApp::GetNoRedrawClassSuffix()) + { + } -HBRUSH wxDisableButtonBrush = 0; + // the name of the registered class with and without CS_[HV]REDRAW styles + wxString regname; + wxString regnameNR; +}; -LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); +namespace +{ -#if !USE_SHARED_LIBRARY - IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler) +wxVector gs_regClassesInfo; - BEGIN_EVENT_TABLE(wxApp, wxEvtHandler) - EVT_IDLE(wxApp::OnIdle) - END_EVENT_TABLE() -#endif +} // anonymous namespace -long wxApp::sm_lastMessageTime = 0; +// ---------------------------------------------------------------------------- +// private functions +// ---------------------------------------------------------------------------- -#ifdef __WIN95__ - static HINSTANCE gs_hRichEdit = NULL; -#endif +LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM); -//// Initialize +// =========================================================================== +// wxGUIAppTraits implementation +// =========================================================================== -bool wxApp::Initialize() +// private class which we use to pass parameters from BeforeChildWaitLoop() to +// AfterChildWaitLoop() +struct ChildWaitLoopData { - wxBuffer = new char[1500]; - - #if defined(__WXDEBUG__) && defined(_MSC_VER) - // 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) - _CrtSetDbgFlag(_CrtSetDbgFlag(_CRTDBG_REPORT_FLAG) | _CRTDBG_LEAK_CHECK_DF); - #endif // debug build under MS VC++ - - #if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT - #if defined(_WINDLL) - streambuf* sBuf = NULL; - #else // EXE - streambuf* sBuf = new wxDebugStreamBuf; - #endif // DLL - - ostream* oStr = new ostream(sBuf) ; - wxDebugContext::SetStream(oStr, sBuf); - #endif // USE_MEMORY_TRACING - - wxClassInfo::InitializeClasses(); + ChildWaitLoopData(wxWindowDisabler *wd_, wxWindow *winActive_) + { + wd = wd_; + winActive = winActive_; + } - #if USE_RESOURCES - wxGetResource("wxWindows", "OsVersion", &wxOsVersion); - #endif + wxWindowDisabler *wd; + wxWindow *winActive; +}; - wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING); - wxTheColourDatabase->Initialize(); +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); +} - wxInitializeStockLists(); - wxInitializeStockObjects(); +void wxGUIAppTraits::AfterChildWaitLoop(void *dataOrig) +{ + wxEndBusyCursor(); - #if USE_WX_RESOURCES - wxInitializeResourceSystem(); - #endif + ChildWaitLoopData * const data = (ChildWaitLoopData *)dataOrig; - // For PostScript printing - #if USE_POSTSCRIPT - wxInitializePrintSetupData(); - wxThePrintPaperDatabase = new wxPrintPaperDatabase; - wxThePrintPaperDatabase->CreateDatabase(); - #endif + delete data->wd; - wxBitmap::InitStandardHandlers(); + // 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(); - #if defined(__WIN95__) - InitCommonControls(); - gs_hRichEdit = LoadLibrary("RICHED32.DLL"); + // also delete the temporary data object itself + delete data; +} - if (gs_hRichEdit == NULL) +#if wxUSE_THREADS +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() ) { - wxMessageBox("Could not initialise Rich Edit DLL"); + // no events means no quit event + return true; } - #endif - #if defined(WX_DRAG_DROP) - // we need to initialize OLE library - if ( FAILED(::OleInitialize(NULL)) ) - wxFatalError(_("Cannot initialize OLE")); - #endif - - #if CTL3D - if (!Ctl3dRegister(wxhInstance)) - wxFatalError("Cannot register CTL3D"); + return evtLoop->Dispatch(); +} - Ctl3dAutoSubclass(wxhInstance); - #endif +DWORD wxGUIAppTraits::WaitForThread(WXHANDLE hThread, int flags) +{ + // We only ever dispatch messages from the main thread and, additionally, + // even from the main thread we shouldn't wait for the message if we don't + // have a running event loop as we would never remove them from the message + // queue then and so we would enter an infinite loop as + // MsgWaitForMultipleObjects() keeps returning WAIT_OBJECT_0 + 1. + if ( flags == wxTHREAD_WAIT_BLOCK || + !wxIsMainThread() || + !wxEventLoop::GetActive() ) + { + // Simple blocking wait. + return DoSimpleWaitForThread(hThread); + } - g_globalCursor = new wxCursor; + 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 + ); +} +#endif // wxUSE_THREADS - wxSTD_FRAME_ICON = LoadIcon(wxhInstance, "wxSTD_FRAME"); - wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDIPARENTFRAME"); - wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxSTD_MDICHILDFRAME"); +wxPortId wxGUIAppTraits::GetToolkitVersion(int *majVer, int *minVer) const +{ + OSVERSIONINFO info; + wxZeroMemory(info); - wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_FRAME"); - wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDIPARENTFRAME"); - wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, "wxDEFAULT_MDICHILDFRAME"); + // 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; + } - RegisterWindowClasses(); +#if defined(__WXHANDHELD__) || defined(__WXWINCE__) + return wxPORT_WINCE; +#else + return wxPORT_MSW; +#endif +} - // Create the brush for disabling bitmap buttons +#if wxUSE_TIMER - LOGBRUSH lb ; - lb.lbStyle = BS_PATTERN; - lb.lbHatch = (int)LoadBitmap( wxhInstance, "wxDISABLE_BUTTON_BITMAP" ) ; - wxDisableButtonBrush = ::CreateBrushIndirect( & lb ) ; - ::DeleteObject( (HGDIOBJ)lb.lbHatch ) ; +wxTimerImpl *wxGUIAppTraits::CreateTimerImpl(wxTimer *timer) +{ + return new wxMSWTimerImpl(timer); +} - #if USE_PENWINDOWS - wxRegisterPenWin(); - #endif +#endif // wxUSE_TIMER - wxWinHandleList = new wxList(wxKEY_INTEGER); +wxEventLoopBase* wxGUIAppTraits::CreateEventLoop() +{ + return new wxEventLoop; +} - // This is to foil optimizations in Visual C++ that - // throw out dummy.obj. - #if (_MSC_VER >= 800) && !defined(WXMAKINGDLL) - extern char wxDummyChar; - if (wxDummyChar) wxDummyChar++; - #endif +// --------------------------------------------------------------------------- +// Stuff for using console from the GUI applications +// --------------------------------------------------------------------------- - wxSetKeyboardHook(TRUE); +#ifndef __WXWINCE__ - wxModule::RegisterModules(); - if (!wxModule::InitializeModules()) - return FALSE; - return TRUE; -} +#if wxUSE_DYNLIB_CLASS -//// RegisterWindowClasses +#include -bool wxApp::RegisterWindowClasses() +namespace { -/////////////////////////////////////////////////////////////////////// -// Register the frame window class. - WNDCLASS wndclass; // Structure used to register Windows class. - wndclass.style = CS_HREDRAW | CS_VREDRAW; - wndclass.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass.cbClsExtra = 0; - wndclass.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass.hInstance = wxhInstance; - wndclass.hIcon = NULL; // wxSTD_FRAME_ICON; - wndclass.hCursor = LoadCursor( NULL, IDC_ARROW ); - wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE+1) ; -// wndclass.hbrBackground = GetStockObject( WHITE_BRUSH ); - wndclass.lpszMenuName = NULL; -#ifdef _MULTIPLE_INSTANCES - sprintf( wxFrameClassName,"wxFrameClass%d", wxhInstance ); -#endif - wndclass.lpszClassName = wxFrameClassName; - - if (!RegisterClass( &wndclass )) - { - // wxFatalError("Can't register Frame Window class"); - } - -/////////////////////////////////////////////////////////////////////// -// Register the MDI frame window class. - WNDCLASS wndclass1; // Structure used to register Windows class. - - wndclass1.style = CS_HREDRAW | CS_VREDRAW; - wndclass1.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass1.cbClsExtra = 0; - wndclass1.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass1.hInstance = wxhInstance; - wndclass1.hIcon = NULL; // wxSTD_MDIPARENTFRAME_ICON; - wndclass1.hCursor = LoadCursor( NULL, IDC_ARROW ); -// wndclass1.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE+1) ; - wndclass1.hbrBackground = NULL; - wndclass1.lpszMenuName = NULL; - - wndclass1.lpszClassName = wxMDIFrameClassName; - if (!RegisterClass( &wndclass1 )) - { -// wxFatalError("Can't register MDI Frame window class"); -// return FALSE; - } - -/////////////////////////////////////////////////////////////////////// -// Register the MDI child frame window class. - WNDCLASS wndclass4; // Structure used to register Windows class. - - wndclass4.style = CS_HREDRAW | CS_VREDRAW; - wndclass4.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass4.cbClsExtra = 0; - wndclass4.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass4.hInstance = wxhInstance; - wndclass4.hIcon = NULL; // wxSTD_MDICHILDFRAME_ICON; - wndclass4.hCursor = LoadCursor( NULL, IDC_ARROW ); - // TODO: perhaps this should be NULL so that Windows doesn't - // paint the background itself (would OnEraseBackground duplicate - // this?) - wndclass4.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ; -// wndclass4.hbrBackground = NULL; - wndclass4.lpszMenuName = NULL; - wndclass4.lpszClassName = wxMDIChildFrameClassName; - - if (!RegisterClass( &wndclass4 )) - { -// wxFatalError("Can't register MDI child frame window class"); -// return FALSE; - } - -/////////////////////////////////////////////////////////////////////// -// Register the panel window class. - WNDCLASS wndclass2; // Structure used to register Windows class. - memset(&wndclass2, 0, sizeof(WNDCLASS)); // start with NULL defaults - // Use CS_OWNDC to avoid messing about restoring the context - // for every graphic operation. - wndclass2.style = CS_HREDRAW | CS_VREDRAW; - wndclass2.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass2.cbClsExtra = 0; - wndclass2.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass2.hInstance = wxhInstance; - wndclass2.hIcon = NULL; - wndclass2.hCursor = NULL; -// wndclass2.hbrBackground = (HBRUSH)(COLOR_BTNFACE+1) ; - wndclass2.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH ); - wndclass2.lpszMenuName = NULL; - wndclass2.lpszClassName = wxPanelClassName; - if (!RegisterClass( &wndclass2 )) - { -// wxFatalError("Can't register Panel Window class"); -// return FALSE; - } - -/////////////////////////////////////////////////////////////////////// -// Register the canvas and textsubwindow class name - WNDCLASS wndclass3; // Structure used to register Windows class. - memset(&wndclass3, 0, sizeof(WNDCLASS)); // start with NULL defaults - // Use CS_OWNDC to avoid messing about restoring the context - // for every graphic operation. -// wndclass3.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC | CS_DBLCLKS ; - // wxWin 2.0 - wndclass3.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS ; - wndclass3.lpfnWndProc = (WNDPROC)wxWndProc; - wndclass3.cbClsExtra = 0; - wndclass3.cbWndExtra = sizeof( DWORD ); // was 4 - wndclass3.hInstance = wxhInstance; - wndclass3.hIcon = NULL; - wndclass3.hCursor = NULL; -// wndclass3.hbrBackground = (HBRUSH)(COLOR_WINDOW+1) ; - wndclass3.hbrBackground = NULL; - wndclass3.lpszMenuName = NULL; - wndclass3.lpszClassName = wxCanvasClassName; - if (!RegisterClass( &wndclass3)) - { -// wxFatalError("Can't register Canvas class"); -// return FALSE; - } - - return TRUE; -} - -//// Convert Windows to argc, argv style - -// FIXME this code should be rewritten (use wxArrayString instead...) -void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine) -{ - // Split command line into tokens, as in usual main(argc, argv) - char **command = new char*[50]; // VZ: sure? why not 25 or 73 and a half?? - - int count = 0; - char *buf = new char[strlen(lpCmdLine) + 1]; - - /* Model independent strcpy */ - int i; - for (i = 0; (buf[i] = lpCmdLine[i]) != 0; i++) - { - /* loop */; - } - - // Get application name - char name[260]; // 260 is MAX_PATH value from windef.h - ::GetModuleFileName(wxhInstance, name, WXSIZEOF(name)); - - // Is it only 16-bit Borland that already copies the program name - // to the first argv index? -#if !defined(__GNUWIN32__) -// #if ! (defined(__BORLANDC__) && !defined(__WIN32__)) - command[count++] = copystring(name); -// #endif -#endif +/* + Helper class to manipulate console from a GUI app. - strcpy(name, wxFileNameFromPath(name)); - wxStripExtension(name); - wxTheApp->SetAppName(name); + 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 - /* Break up string */ - // Treat strings enclosed in double-quotes as single arguments - char* str = buf; - while (*str) - { - if ( count == WXSIZEOF(command) ) + 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() { - wxFAIL_MSG("too many command line args."); - break; - } + m_hStderr = INVALID_HANDLE_VALUE; + m_historyLen = + m_dataLen = + m_dataLine = 0; - while ( *str && isspace(*str) ) // skip whitespace - str++; + m_ok = -1; + } - if (*str == '"') + ~wxConsoleStderr() { - str++; - command[count++] = str; - while (*str && *str != '"') - str++; + if ( m_hStderr != INVALID_HANDLE_VALUE ) + { + if ( !::FreeConsole() ) + { + wxLogLastError(wxT("FreeConsole")); + } + } } - else if (*str) + + // 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 { - command[count++] = str; - while (*str && !isspace(*str)) - str++; + if ( m_ok == -1 ) + { + wxConsoleStderr * const self = const_cast(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(); } - if (*str) - *str++ = '\0'; - } - wxTheApp->argv = new char*[count + 1]; - wxTheApp->argv[count] = NULL; /* argv[] is NULL terminated list! */ - wxTheApp->argc = count; - for (i = 0; i < count; i++) - { - wxTheApp->argv[i] = copystring(command[i]); + // output the provided text on the console, return true if ok + bool Write(const wxString& text); - delete [] command[i]; - } +private: + // called by Init() once only to do the real initialization + bool DoInit(); - delete [] command; - delete [] buf; -} + // retrieve the command line history into the provided buffer and return + // its length + int GetCommandHistory(wxWxCharBuffer& buf) const; -//// Cleans up any wxWindows internal structures left lying around + // check if the console history has changed + bool IsHistoryUnchanged() const; -void wxApp::CleanUp() -{ - //// COMMON CLEANUP - wxModule::CleanUpModules(); + int m_ok; // initially -1, set to true or false by Init() -#if USE_WX_RESOURCES - wxCleanUpResourceSystem(); + wxDynamicLibrary m_dllKernel32; -// wxDefaultResourceTable->ClearTable(); -#endif + HANDLE m_hStderr; // console handle, if it's valid we must call + // FreeConsole() (even if m_ok != 1) - // Indicate that the cursor can be freed, - // so that cursor won't be deleted by deleting - // the bitmap list before g_globalCursor goes out - // of scope (double deletion of the cursor). - wxSetCursor(wxNullCursor); - delete g_globalCursor; + wxWxCharBuffer m_history; // command history on startup + int m_historyLen; // length command history buffer - wxDeleteStockObjects() ; + wxCharBuffer m_data; // data between empty line and cursor position + int m_dataLen; // length data buffer + int m_dataLine; // line offset - // Destroy all GDI lists, etc. - wxDeleteStockLists(); + typedef DWORD (WINAPI *GetConsoleCommandHistory_t)(LPTSTR sCommands, + DWORD nBufferLength, + LPCTSTR sExeName); + typedef DWORD (WINAPI *GetConsoleCommandHistoryLength_t)(LPCTSTR sExeName); - delete wxTheColourDatabase; - wxTheColourDatabase = NULL; + GetConsoleCommandHistory_t m_pfnGetConsoleCommandHistory; + GetConsoleCommandHistoryLength_t m_pfnGetConsoleCommandHistoryLength; -#if USE_POSTSCRIPT - wxInitializePrintSetupData(FALSE); - delete wxThePrintPaperDatabase; - wxThePrintPaperDatabase = NULL; -#endif + wxDECLARE_NO_COPY_CLASS(wxConsoleStderr); +}; - wxBitmap::CleanUpHandlers(); +bool wxConsoleStderr::DoInit() +{ + HANDLE hStderr = ::GetStdHandle(STD_ERROR_HANDLE); - delete[] wxBuffer; - wxBuffer = NULL; + if ( hStderr == INVALID_HANDLE_VALUE || !hStderr ) + return false; - //// WINDOWS-SPECIFIC CLEANUP + if ( !m_dllKernel32.Load(wxT("kernel32.dll")) ) + return false; - wxSetKeyboardHook(FALSE); + typedef BOOL (WINAPI *AttachConsole_t)(DWORD dwProcessId); + AttachConsole_t wxDL_INIT_FUNC(pfn, AttachConsole, m_dllKernel32); -#ifdef __WIN95__ - if (gs_hRichEdit != NULL) - FreeLibrary(gs_hRichEdit); -#endif + if ( !pfnAttachConsole || !pfnAttachConsole(ATTACH_PARENT_PROCESS) ) + return false; -#if USE_PENWINDOWS - wxCleanUpPenWin(); -#endif + // console attached, set m_hStderr now to ensure that we free it in the + // dtor + m_hStderr = hStderr; - if (wxSTD_FRAME_ICON) - DestroyIcon(wxSTD_FRAME_ICON); - if (wxSTD_MDICHILDFRAME_ICON) - DestroyIcon(wxSTD_MDICHILDFRAME_ICON); - if (wxSTD_MDIPARENTFRAME_ICON) - DestroyIcon(wxSTD_MDIPARENTFRAME_ICON); - - if (wxDEFAULT_FRAME_ICON) - DestroyIcon(wxDEFAULT_FRAME_ICON); - if (wxDEFAULT_MDICHILDFRAME_ICON) - DestroyIcon(wxDEFAULT_MDICHILDFRAME_ICON); - if (wxDEFAULT_MDIPARENTFRAME_ICON) - DestroyIcon(wxDEFAULT_MDIPARENTFRAME_ICON); - - if ( wxDisableButtonBrush ) - ::DeleteObject( wxDisableButtonBrush ) ; - -#if defined(WX_DRAG_DROP) - ::OleUninitialize(); -#endif + wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistory, m_dllKernel32); + if ( !m_pfnGetConsoleCommandHistory ) + return false; -#if CTL3D - Ctl3dUnregister(wxhInstance); -#endif + wxDL_INIT_FUNC_AW(m_pfn, GetConsoleCommandHistoryLength, m_dllKernel32); + if ( !m_pfnGetConsoleCommandHistoryLength ) + return false; - if (wxWinHandleList) - delete wxWinHandleList ; + // 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; - wxClassInfo::CleanUpClasses(); - // do it as the very last thing because everything else can log messages - wxLog::DontCreateOnDemand(); - delete wxLog::SetActiveTarget(NULL); -} + // now find the first blank line above the current position + CONSOLE_SCREEN_BUFFER_INFO csbi; + + if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) ) + { + wxLogLastError(wxT("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(wxT("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(wxT("ReadConsoleOutputCharacterA")); + return false; + } + } -#if !defined(_WINDLL) || (defined(_WINDLL) && defined(WXMAKINGDLL)) + return true; +} -//// Main wxWindows entry point -int wxEntry(WXHINSTANCE hInstance, - WXHINSTANCE WXUNUSED(hPrevInstance), - char *lpCmdLine, - int nCmdShow, - bool enterLoop) +int wxConsoleStderr::GetCommandHistory(wxWxCharBuffer& buf) const { -#ifndef __WXDEBUG__ // take everything into a try-except block in release build - __try { -#endif + // these functions are internal and may only be called by cmd.exe + static const wxChar *CMD_EXE = wxT("cmd.exe"); - wxhInstance = (HINSTANCE) hInstance; + const int len = m_pfnGetConsoleCommandHistoryLength(CMD_EXE); + if ( len ) + { + buf.extend(len); - if (!wxApp::Initialize()) - return 0; + int len2 = m_pfnGetConsoleCommandHistory(buf.data(), len, CMD_EXE); - // 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, - "No initializer - use IMPLEMENT_APP macro." ); - - wxTheApp = (*wxApp::GetInitializerFunction()) (); - } - - wxCHECK_MSG( wxTheApp, 0, "You have to define an instance of wxApp!" ); - - // save the WinMain() parameters - wxTheApp->ConvertToStandardCommandArgs(lpCmdLine); - wxTheApp->m_nCmdShow = nCmdShow; - - // GUI-specific initialisation. In fact on Windows we don't have any, - // but this call is provided for compatibility across platforms. - wxTheApp->OnInitGui() ; - - int retValue = 0; - - if ( wxTheApp->OnInit() ) - { - if ( enterLoop ) - { - retValue = wxTheApp->OnRun(); - } - } - //else: app initialization failed, so we skipped OnRun() - - wxWindow *topWindow = wxTheApp->GetTopWindow(); - if ( topWindow ) - { - // Forcibly delete the window. - if ( topWindow->IsKindOf(CLASSINFO(wxFrame)) || - topWindow->IsKindOf(CLASSINFO(wxDialog)) ) - { - topWindow->Close(TRUE); - wxTheApp->DeletePendingObjects(); - } - else - { - delete topWindow; - wxTheApp->SetTopWindow(NULL); - } - } - - wxTheApp->OnExit(); - wxApp::CleanUp(); - - delete wxTheApp; - wxTheApp = NULL; - -#if (WXDEBUG && USE_MEMORY_TRACING) || USE_DEBUG_CONTEXT - // At this point we want to check if there are any memory - // blocks that aren't part of the wxDebugContext itself, - // as a special case. Then when dumping we need to ignore - // wxDebugContext, too. - if (wxDebugContext::CountObjectsLeft() > 0) - { - wxTrace("There were memory leaks.\n"); - wxDebugContext::Dump(); - wxDebugContext::PrintStatistics(); - } - wxDebugContext::SetStream(NULL, NULL); -#endif +#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 - return retValue; -#ifndef __WXDEBUG__ // catch exceptions only in release build - } - __except ( EXCEPTION_EXECUTE_HANDLER ) { - /* - if ( wxTheApp ) - wxTheApp->OnFatalException(); - */ + if ( len2 != len ) + { + wxFAIL_MSG( wxT("failed getting history?") ); + } + } - ::ExitProcess(3); // the same exit code as abort() - } -#endif //debug + return len; } -#else /* _WINDLL */ +bool wxConsoleStderr::IsHistoryUnchanged() const +{ + wxASSERT_MSG( m_ok == 1, wxT("shouldn't be called if not initialized") ); -//// Entry point for DLLs + // get (possibly changed) command history + wxWxCharBuffer history; + const int historyLen = GetCommandHistory(history); -int wxEntry(WXHINSTANCE hInstance) + // and compare it with the original one + return historyLen == m_historyLen && history && + memcmp(m_history, history, historyLen) == 0; +} + +bool wxConsoleStderr::Write(const wxString& text) { - wxhInstance = (HINSTANCE) hInstance; - wxApp::Initialize(); + wxASSERT_MSG( m_hStderr != INVALID_HANDLE_VALUE, + wxT("should only be called if Init() returned true") ); + + // get current position + CONSOLE_SCREEN_BUFFER_INFO csbi; + if ( !::GetConsoleScreenBufferInfo(m_hStderr, &csbi) ) + { + wxLogLastError(wxT("GetConsoleScreenBufferInfo")); + return false; + } - // 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. + // and calculate new position (where is empty line) + csbi.dwCursorPosition.X = 0; + csbi.dwCursorPosition.Y -= m_dataLine; - if (!wxTheApp) - { - if (!wxApp::GetInitializerFunction()) + if ( !::SetConsoleCursorPosition(m_hStderr, csbi.dwCursorPosition) ) { - MessageBox(NULL, "No initializer - use IMPLEMENT_APP macro.", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK); - return 0; + wxLogLastError(wxT("SetConsoleCursorPosition")); + return false; } - wxTheApp = (* wxApp::GetInitializerFunction()) (); - } + DWORD ret; + if ( !::FillConsoleOutputCharacter(m_hStderr, wxT(' '), m_dataLen, + csbi.dwCursorPosition, &ret) ) + { + wxLogLastError(wxT("FillConsoleOutputCharacter")); + return false; + } - if (!wxTheApp) { - MessageBox(NULL, "You have to define an instance of wxApp!", "wxWindows Error", MB_APPLMODAL | MB_ICONSTOP | MB_OK); - return 0; - } + if ( !::WriteConsole(m_hStderr, text.wx_str(), text.length(), &ret, NULL) ) + { + wxLogLastError(wxT("WriteConsole")); + return false; + } - wxTheApp->argc = 0; - wxTheApp->argv = NULL; + WriteConsoleA(m_hStderr, m_data, m_dataLen, &ret, 0); - wxTheApp->OnInitGui(); + return true; +} - wxTheApp->OnInit(); +wxConsoleStderr s_consoleStderr; - if (wxTheApp->GetTopWindow() && wxTheApp->GetTopWindow()->GetHWND()) { - wxTheApp->GetTopWindow()->Show(TRUE); - } +} // anonymous namespace - return 1; +bool wxGUIAppTraits::CanUseStderr() +{ + return s_consoleStderr.IsOkToUse(); } -#endif // _WINDLL -//// Static member initialization +bool wxGUIAppTraits::WriteToStderr(const wxString& text) +{ + return s_consoleStderr.IsOkToUse() && s_consoleStderr.Write(text); +} -wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL; +#else // !wxUSE_DYNLIB_CLASS -wxApp::wxApp() +bool wxGUIAppTraits::CanUseStderr() { - m_topWindow = NULL; - wxTheApp = this; - m_className = ""; - m_wantDebugOutput = TRUE ; - m_appName = ""; - argc = 0; - argv = NULL; -#ifdef __WXMSW__ - m_printMode = wxPRINT_WINDOWS; -#else - m_printMode = wxPRINT_POSTSCRIPT; -#endif - m_exitOnFrameDelete = TRUE; - m_auto3D = TRUE; + return false; } -wxApp::~wxApp() +bool wxGUIAppTraits::WriteToStderr(const wxString& WXUNUSED(text)) { - // Delete command-line args - int i; - for (i = 0; i < argc; i++) - { - delete[] argv[i]; - } - delete argv; + return false; } -bool wxApp::Initialized() +#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS + +#endif // !__WXWINCE__ + +// =========================================================================== +// wxApp implementation +// =========================================================================== + +int wxApp::m_nCmdShow = SW_SHOWNORMAL; + +// --------------------------------------------------------------------------- +// wxWin macros +// --------------------------------------------------------------------------- + +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() + +// class to ensure that wxAppBase::CleanUp() is called if our Initialize() +// fails +class wxCallBaseCleanup { -#ifndef _WINDLL - if (GetTopWindow()) - return TRUE; - else - return FALSE; +public: + wxCallBaseCleanup(wxApp *app) : m_app(app) { } + ~wxCallBaseCleanup() { if ( m_app ) m_app->wxAppBase::CleanUp(); } + + void Dismiss() { m_app = NULL; } + +private: + wxApp *m_app; +}; + +//// 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); + +#if !defined(__WXMICROWIN__) + InitCommonControls(); +#endif // !defined(__WXMICROWIN__) + +#if defined(__SMARTPHONE__) || defined(__POCKETPC__) + SHInitExtraControls(); #endif -#ifdef _WINDLL // Assume initialized if DLL (no way of telling) - return TRUE; + +#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 -} -/* - * Get and process a message, returning FALSE if WM_QUIT - * received. - * - */ -bool wxApp::DoMessage() -{ - if (!::GetMessage(&s_currentMsg, (HWND) NULL, 0, 0)) - { - return FALSE; - } + wxOleInitialize(); - // Process the message - if (!ProcessMessage((WXMSG *)&s_currentMsg)) - { - ::TranslateMessage(&s_currentMsg); - wxApp::sm_lastMessageTime = s_currentMsg.time; /* MATTHEW: timeStamp impl. */ - ::DispatchMessage(&s_currentMsg); - } - return TRUE; +#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__) + wxSetKeyboardHook(true); +#endif + + callBaseCleanup.Dismiss(); + + return true; } -/* - * Keep trying to process messages until WM_QUIT - * received. - * - * If there are messages to be processed, they will all be - * processed and OnIdle will not be called. - * When there are no more messages, OnIdle is called. - * If OnIdle requests more time, - * it will be repeatedly called so long as there are no pending messages. - * A 'feature' of this is that once OnIdle has decided that no more processing - * is required, then it won't get processing time until further messages - * are processed (it'll sit in DoMessage). - */ +// --------------------------------------------------------------------------- +// Win32 window class registration +// --------------------------------------------------------------------------- -int wxApp::MainLoop() +/* static */ +const wxChar *wxApp::GetRegisteredClassName(const wxChar *name, + int bgBrushCol, + int extraStyles) { - m_keepGoing = TRUE; - while (m_keepGoing) - { - while (!::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) && - ProcessIdle()) {} - if (!DoMessage()) - m_keepGoing = FALSE; - } + const size_t count = gs_regClassesInfo.size(); + for ( size_t n = 0; n < count; n++ ) + { + if ( gs_regClassesInfo[n].regname == name ) + return gs_regClassesInfo[n].regname.c_str(); + } + + // we need to register this class + WNDCLASS wndclass; + wxZeroMemory(wndclass); + + wndclass.lpfnWndProc = (WNDPROC)wxWndProc; + wndclass.hInstance = wxGetInstance(); + wndclass.hCursor = ::LoadCursor(NULL, IDC_ARROW); + wndclass.hbrBackground = (HBRUSH)wxUIntToPtr(bgBrushCol + 1); + wndclass.style = CS_HREDRAW | CS_VREDRAW | CS_DBLCLKS | extraStyles; + + + ClassRegInfo regClass(name); + wndclass.lpszClassName = regClass.regname.wx_str(); + if ( !::RegisterClass(&wndclass) ) + { + wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"), + regClass.regname)); + return NULL; + } + + wndclass.style &= ~(CS_HREDRAW | CS_VREDRAW); + wndclass.lpszClassName = regClass.regnameNR.wx_str(); + if ( !::RegisterClass(&wndclass) ) + { + wxLogLastError(wxString::Format(wxT("RegisterClass(%s)"), + regClass.regname)); + ::UnregisterClass(regClass.regname.c_str(), wxGetInstance()); + return NULL; + } + + gs_regClassesInfo.push_back(regClass); - return s_currentMsg.wParam; + // take care to return the pointer which will remain valid after the + // function returns (it could be invalidated later if new elements are + // added to the vector and it's reallocated but this shouldn't matter as + // this pointer should be used right now, not stored) + return gs_regClassesInfo.back().regname.wx_str(); } -// Returns TRUE if more time is needed. -bool wxApp::ProcessIdle() +bool wxApp::IsRegisteredClassName(const wxString& name) { - wxIdleEvent event; - event.SetEventObject(this); - ProcessEvent(event); + const size_t count = gs_regClassesInfo.size(); + for ( size_t n = 0; n < count; n++ ) + { + if ( gs_regClassesInfo[n].regname == name || + gs_regClassesInfo[n].regnameNR == name ) + return true; + } - return event.MoreRequested(); + return false; } -void wxApp::ExitMainLoop() +void wxApp::UnregisterWindowClasses() { - m_keepGoing = FALSE; + const size_t count = gs_regClassesInfo.size(); + for ( size_t n = 0; n < count; n++ ) + { + const ClassRegInfo& regClass = gs_regClassesInfo[n]; + if ( !::UnregisterClass(regClass.regname.c_str(), wxGetInstance()) ) + { + wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"), + regClass.regname)); + } + + if ( !::UnregisterClass(regClass.regnameNR.c_str(), wxGetInstance()) ) + { + wxLogLastError(wxString::Format(wxT("UnregisterClass(%s)"), + regClass.regnameNR)); + } + } + + gs_regClassesInfo.clear(); } -bool wxApp::Pending() +void wxApp::CleanUp() { - return (::PeekMessage(&s_currentMsg, 0, 0, 0, PM_NOREMOVE) != 0) ; + // 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 + + wxOleUninitialize(); + + // for an EXE the classes are unregistered when it terminates but DLL may + // be loaded several times (load/unload/load) into the same process in + // which case the registration will fail after the first time if we don't + // unregister the classes now + UnregisterWindowClasses(); } -void wxApp::Dispatch() +// ---------------------------------------------------------------------------- +// wxApp ctor/dtor +// ---------------------------------------------------------------------------- + +wxApp::wxApp() { - if (!DoMessage()) - m_keepGoing = FALSE; + m_printMode = wxPRINT_WINDOWS; } -/* - * Give all windows a chance to preprocess - * the message. Some may have accelerator tables, or have - * MDI complications. - */ -bool wxApp::ProcessMessage(WXMSG *Msg) +wxApp::~wxApp() { - MSG *msg = (MSG *)Msg; +} - HWND hWnd; +// ---------------------------------------------------------------------------- +// wxApp idle handling +// ---------------------------------------------------------------------------- - // Try translations first; find the youngest window with - // a translation table. - for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd)) - { - wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd); - if (wnd) - { - if (wnd->MSWTranslateMessage(Msg)) - return TRUE; - } - } +void wxApp::OnIdle(wxIdleEvent& WXUNUSED(event)) +{ +#if wxUSE_DC_CACHEING + // automated DC cache management: clear the cached DCs and bitmap + // if it's likely that the app has finished with them, that is, we + // get an idle event and we're not dragging anything. + if (!::GetKeyState(MK_LBUTTON) && !::GetKeyState(MK_MBUTTON) && !::GetKeyState(MK_RBUTTON)) + wxMSWDCImpl::ClearCache(); +#endif // wxUSE_DC_CACHEING +} - // Anyone for a non-translation message? Try youngest descendants first. - for (hWnd = msg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd)) - { - wxWindow *wnd = wxFindWinFromHandle((WXHWND) hWnd); - if (wnd) +void wxApp::WakeUpIdle() +{ + // Send the top window a dummy message so idle handler processing will + // start up again. Doing it this way ensures that the idle handler + // wakes up in the right thread (see also wxWakeUpMainThread() which does + // the same for the main app thread only) + wxWindow * const topWindow = wxTheApp->GetTopWindow(); + if ( topWindow ) { - if (wnd->MSWProcessMessage(Msg)) - return TRUE; + HWND hwndTop = GetHwndOf(topWindow); + + // Do not post WM_NULL if there's already a pending WM_NULL to avoid + // overflowing the message queue. + // + // Notice that due to a limitation of PeekMessage() API (which handles + // 0,0 range specially), we have to check the range from 0-1 instead. + // This still makes it possible to overflow the queue with WM_NULLs by + // interspersing the calles to WakeUpIdle() with windows creation but + // it should be rather hard to do it accidentally. + MSG msg; + if ( !::PeekMessage(&msg, hwndTop, 0, 1, PM_NOREMOVE) || + ::PeekMessage(&msg, hwndTop, 1, 1, PM_NOREMOVE) ) + { + if ( !::PostMessage(hwndTop, WM_NULL, 0, 0) ) + { + // should never happen + wxLogLastError(wxT("PostMessage(WM_NULL)")); + } + } } - } - return FALSE; +#if wxUSE_THREADS + else + wxWakeUpMainThread(); +#endif // wxUSE_THREADS } -void wxApp::OnIdle(wxIdleEvent& event) +// ---------------------------------------------------------------------------- +// other wxApp event hanlders +// ---------------------------------------------------------------------------- + +void wxApp::OnEndSession(wxCloseEvent& WXUNUSED(event)) { - static bool inOnIdle = FALSE; + // 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 - // Avoid recursion (via ProcessEvent default case) - if (inOnIdle) - return; + // 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); - inOnIdle = TRUE; + const int rc = OnExit(); - // 'Garbage' collection of windows deleted with Close(). - DeletePendingObjects(); + wxEntryCleanup(); - // flush the logged messages if any - wxLog *pLog = wxLog::GetActiveTarget(); - if ( pLog != NULL && pLog->HasPendingMessages() ) - pLog->Flush(); + // 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 OnIdle events to all windows - bool needMore = SendIdleEvents(); -// bool needMore = FALSE; +// Default behaviour: close the application with prompts. The +// user can veto the close, and therefore the end session. +void wxApp::OnQueryEndSession(wxCloseEvent& event) +{ + if (GetTopWindow()) + { + if (!GetTopWindow()->Close(!event.CanVeto())) + event.Veto(true); + } +} - if (needMore) - event.RequestMore(TRUE); +// ---------------------------------------------------------------------------- +// system DLL versions +// ---------------------------------------------------------------------------- - inOnIdle = FALSE; -} +// these functions have trivial inline implementations for CE +#ifndef __WXWINCE__ -// Send idle event to all top-level windows -bool wxApp::SendIdleEvents() -{ - bool needMore = FALSE; - wxNode* node = wxTopLevelWindows.First(); - while (node) - { - wxWindow* win = (wxWindow*) node->Data(); - if (SendIdleEvents(win)) - needMore = TRUE; +#if wxUSE_DYNLIB_CLASS - node = node->Next(); - } - return needMore; -} +namespace +{ -// Send idle event to window and all subwindows -bool wxApp::SendIdleEvents(wxWindow* win) +// helper function: retrieve the DLL version by using DllGetVersion(), returns +// 0 if the DLL doesn't export such function +int CallDllGetVersion(wxDynamicLibrary& dll) { - bool needMore = FALSE; + // now check if the function is available during run-time + wxDYNLIB_FUNCTION( DLLGETVERSIONPROC, DllGetVersion, dll ); + if ( !pfnDllGetVersion ) + return 0; - wxIdleEvent event; - event.SetEventObject(win); - win->ProcessEvent(event); + DLLVERSIONINFO dvi; + dvi.cbSize = sizeof(dvi); - if (event.MoreRequested()) - needMore = TRUE; + HRESULT hr = (*pfnDllGetVersion)(&dvi); + if ( FAILED(hr) ) + { + wxLogApiError(wxT("DllGetVersion"), hr); - wxNode* node = win->GetChildren()->First(); - while (node) - { - wxWindow* win = (wxWindow*) node->Data(); - if (SendIdleEvents(win)) - needMore = TRUE; + return 0; + } - node = node->Next(); - } - return needMore ; + return 100*dvi.dwMajorVersion + dvi.dwMinorVersion; } -void wxApp::DeletePendingObjects() -{ - wxNode *node = wxPendingDelete.First(); - while (node) - { - wxObject *obj = (wxObject *)node->Data(); +} // anonymous namespace - delete obj; +/* 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; - if (wxPendingDelete.Member(obj)) - delete node; + if ( s_verComCtl32 == -1 ) + { + // we're prepared to handle the errors + wxLogNull noLog; + + // we don't want to load comctl32.dll, it should be already loaded but, + // depending on the OS version and the presence of the manifest, it can + // be either v5 or v6 and instead of trying to guess it just get the + // handle of the already loaded version + wxLoadedDLL dllComCtl32(wxT("comctl32.dll")); + if ( !dllComCtl32.IsLoaded() ) + { + s_verComCtl32 = 0; + return 0; + } - // Deleting one object may have deleted other pending - // objects, so start from beginning of list again. - node = wxPendingDelete.First(); - } -} + // try DllGetVersion() for recent DLLs + s_verComCtl32 = CallDllGetVersion(dllComCtl32); -wxLog* wxApp::CreateLogTarget() -{ - return new wxLogGui; -} + // if DllGetVersion() is unavailable either during compile or + // run-time, try to guess the version otherwise + if ( !s_verComCtl32 ) + { + // InitCommonControlsEx is unique to 4.70 and later + void *pfn = dllComCtl32.GetSymbol(wxT("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(wxT("InitializeFlatSB")); + if ( !pfn ) + { + // not found, must be 4.70 + s_verComCtl32 = 470; + } + else + { + // found, must be 4.71 or later + s_verComCtl32 = 471; + } + } + } + } -wxWindow* wxApp::GetTopWindow() const -{ - if (m_topWindow) - return m_topWindow; - else if (wxTopLevelWindows.Number() > 0) - return (wxWindow*) wxTopLevelWindows.First()->Data(); - else - return NULL; + return s_verComCtl32; } -int wxApp::GetComCtl32Version() const +/* static */ +int wxApp::GetShell32Version() { - // have we loaded COMCTL32 yet? - HMODULE theModule = ::GetModuleHandle("COMCTL32"); - int version = 0; - - // if so, then we can check for the version - if (theModule) + static int s_verShell32 = -1; + if ( s_verShell32 == -1 ) { - // InitCommonControlsEx is unique to 4.7 and later - FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx"); + // we're prepared to handle the errors + wxLogNull noLog; - if (! theProc) - { // not found, must be 4.00 - version = 400; + wxDynamicLibrary dllShell32(wxT("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 + else // failed load the DLL? { - // The following symbol are unique to 4.71 - // DllInstall - // FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos - // FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo - // FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange - // FlatSB_ShowScrollBar - // _DrawIndirectImageList _DuplicateImageList - // InitializeFlatSB - // UninitializeFlatSB - // we could check for any of these - I chose DllInstall - FARPROC theProc = ::GetProcAddress(theModule, "DllInstall"); - if (! theProc) - { - // not found, must be 4.70 - version = 470; - } - else - { // found, must be 4.71 - version = 471; - } + s_verShell32 = 0; } } - return version; + + return s_verShell32; } -void wxExit() +#else // !wxUSE_DYNLIB_CLASS + +/* static */ +int wxApp::GetComCtl32Version() { - wxApp::CleanUp(); - FatalAppExit(0, "Fatal error: exiting"); + return 0; } -// Yield to incoming messages -bool wxYield() +/* static */ +int wxApp::GetShell32Version() { - MSG msg; - // We want to go back to the main message loop - // if we see a WM_QUIT. (?) - while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT) - { - if (!wxTheApp->DoMessage()) - break; - } - - return TRUE; + return 0; } -HINSTANCE wxGetInstance() +#endif // wxUSE_DYNLIB_CLASS/!wxUSE_DYNLIB_CLASS + +#endif // !__WXWINCE__ + +#if wxUSE_EXCEPTIONS + +// ---------------------------------------------------------------------------- +// exception handling +// ---------------------------------------------------------------------------- + +bool wxApp::OnExceptionInMainLoop() { - return wxhInstance; + // 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, + wxT("An unhandled exception occurred. Press \"Abort\" to \ +terminate the program,\r\n\ +\"Retry\" to exit the program normally and \"Ignore\" to try to continue."), + wxT("Unhandled exception"), + MB_ABORTRETRYIGNORE | + MB_ICONERROR| + MB_TASKMODAL + ) + ) + { + case IDABORT: + throw; + + default: + wxFAIL_MSG( wxT("unexpected MessageBox() return code") ); + // fall through + + case IDRETRY: + return false; + + 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(_MSC_VER) && !defined(__WIN32__)) || defined(__GNUWIN32__) - #include "main.cpp" -#endif +#endif // wxUSE_EXCEPTIONS