X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/57c208c5759da71a637f0f0f5b7d3dc3eda09c02..a06066343d670807825adcafebfa4fb8cfff5521:/src/msw/utilsexc.cpp?ds=sidebyside diff --git a/src/msw/utilsexc.cpp b/src/msw/utilsexc.cpp index e74411c229..453b7efc5d 100644 --- a/src/msw/utilsexc.cpp +++ b/src/msw/utilsexc.cpp @@ -1,53 +1,63 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: utilsexec.cpp +// Name: msw/utilsexec.cpp // Purpose: Various utilities // Author: Julian Smart // Modified by: // Created: 04/01/98 // RCS-ID: $Id$ // Copyright: (c) Julian Smart and Markus Holzem -// Licence: wxWindows license +// Licence: wxWindows license ///////////////////////////////////////////////////////////////////////////// +// ============================================================================ +// declarations +// ============================================================================ + +// ---------------------------------------------------------------------------- +// headers +// ---------------------------------------------------------------------------- + #ifdef __GNUG__ -#pragma implementation + #pragma implementation #endif // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" #ifdef __BORLANDC__ -#pragma hdrstop + #pragma hdrstop #endif #ifndef WX_PRECOMP -#include "wx/setup.h" -#include "wx/utils.h" -#include "wx/app.h" -#include "wx/intl.h" + #include "wx/utils.h" + #include "wx/app.h" + #include "wx/intl.h" #endif #include "wx/log.h" + +#ifdef __WIN32__ + #include "wx/stream.h" + #include "wx/process.h" +#endif + #include "wx/msw/private.h" -#include #include -#if !defined(__GNUWIN32__) && !defined(__SALFORDC__) -#include +#if !defined(__GNUWIN32__) && !defined(__WXWINE__) && !defined(__SALFORDC__) + #include #ifndef __MWERKS__ -#include + #include #endif #endif -#ifdef __GNUWIN32__ -#ifndef __TWIN32__ -#include -#include -#endif +#if defined(__GNUWIN32__) && !defined(__TWIN32__) + #include + #include #endif -#ifdef __WIN32__ +#if defined(__WIN32__) && !defined(__WXWINE__) #include #ifndef __GNUWIN32__ @@ -59,161 +69,622 @@ #include #include #ifndef __WATCOMC__ -#if !(defined(_MSC_VER) && (_MSC_VER > 800)) -#include -#endif + #if !(defined(_MSC_VER) && (_MSC_VER > 800)) + #include + #endif #endif #include -#define wxEXECUTE_WIN_MESSAGE 10000 +#if wxUSE_IPC + #include "wx/dde.h" // for WX_DDE hack in wxExecute +#endif // wxUSE_IPC -struct wxExecuteData { - HWND window; - HINSTANCE process; - wxProcess *handler; - char state; +// ---------------------------------------------------------------------------- +// constants +// ---------------------------------------------------------------------------- + +// this message is sent when the process we're waiting for terminates +#define wxWM_PROC_TERMINATED (WM_USER + 10000) + +// ---------------------------------------------------------------------------- +// this module globals +// ---------------------------------------------------------------------------- + +// we need to create a hidden window to receive the process termination +// notifications and for this we need a (Win) class name for it which we will +// register the first time it's needed +static const wxChar *gs_classForHiddenWindow = NULL; + +// ---------------------------------------------------------------------------- +// private types +// ---------------------------------------------------------------------------- + +// structure describing the process we're being waiting for +struct wxExecuteData +{ +public: + ~wxExecuteData() + { +#ifndef __WIN16__ + if ( !::CloseHandle(hProcess) ) + { + wxLogLastError("CloseHandle(hProcess)"); + } +#endif + } + + HWND hWnd; // window to send wxWM_PROC_TERMINATED to + HANDLE hProcess; // handle of the process + DWORD dwProcessId; // pid of the process + wxProcess *handler; + DWORD dwExitCode; // the exit code of the process + bool state; // set to FALSE when the process finishes }; #ifdef __WIN32__ -static DWORD wxExecuteThread(wxExecuteData *data) +// ---------------------------------------------------------------------------- +// wxPipeStreams +// ---------------------------------------------------------------------------- + +class wxPipeInputStream: public wxInputStream { +public: + wxPipeInputStream(HANDLE hInput); + ~wxPipeInputStream(); + +protected: + size_t OnSysRead(void *buffer, size_t len); + +protected: + HANDLE m_hInput; +}; + +class wxPipeOutputStream: public wxOutputStream { +public: + wxPipeOutputStream(HANDLE hOutput); + ~wxPipeOutputStream(); + +protected: + size_t OnSysWrite(const void *buffer, size_t len); + +protected: + HANDLE m_hOutput; +}; + +// ================== +// wxPipeInputStream +// ================== + +wxPipeInputStream::wxPipeInputStream(HANDLE hInput) { - WaitForSingleObject(data->process, INFINITE); + m_hInput = hInput; +} - // Send an implicit message to the window - SendMessage(data->window, wxEXECUTE_WIN_MESSAGE, 0, (LPARAM)data); +wxPipeInputStream::~wxPipeInputStream() +{ + ::CloseHandle(m_hInput); +} - return 0; +size_t wxPipeInputStream::OnSysRead(void *buffer, size_t len) +{ + DWORD bytesRead; + + m_lasterror = wxSTREAM_NOERROR; + if (! ::ReadFile(m_hInput, buffer, len, &bytesRead, NULL) ) { + if (GetLastError() == ERROR_BROKEN_PIPE) + m_lasterror = wxSTREAM_EOF; + else + m_lasterror = wxSTREAM_READ_ERROR; + } + return bytesRead; } -#endif +// ================== +// wxPipeOutputStream +// ================== -LRESULT APIENTRY _EXPORT wxExecuteWindowCbk(HWND hWnd, UINT message, - WPARAM wParam, LPARAM lParam) +wxPipeOutputStream::wxPipeOutputStream(HANDLE hOutput) { - wxExecuteData *data = (wxExecuteData *)lParam; + m_hOutput = hOutput; +} - if (message == wxEXECUTE_WIN_MESSAGE) { - DestroyWindow(hWnd); - if (data->handler) - data->handler->OnTerminate((int)data->process); +wxPipeOutputStream::~wxPipeOutputStream() +{ + ::CloseHandle(m_hOutput); +} - if (data->state) - data->state = 0; - else - delete data; - } - return 0; +size_t wxPipeOutputStream::OnSysWrite(const void *buffer, size_t len) +{ + DWORD bytesRead; + + m_lasterror = wxSTREAM_NOERROR; + if (! ::WriteFile(m_hOutput, buffer, len, &bytesRead, NULL) ) { + if (GetLastError() == ERROR_BROKEN_PIPE) + m_lasterror = wxSTREAM_EOF; + else + m_lasterror = wxSTREAM_READ_ERROR; + } + return bytesRead; } -extern char wxPanelClassName[]; +#endif // __WIN32__ + +// ============================================================================ +// implementation +// ============================================================================ -long wxExecute(const wxString& command, bool sync, wxProcess *handler) +#ifdef __WIN32__ +static DWORD wxExecuteThread(wxExecuteData *data) { - if (command == "") + WaitForSingleObject(data->hProcess, INFINITE); + + // get the exit code + if ( !GetExitCodeProcess(data->hProcess, &data->dwExitCode) ) + { + wxLogLastError("GetExitCodeProcess"); + } + + wxASSERT_MSG( data->dwExitCode != STILL_ACTIVE, + wxT("process should have terminated") ); + + // send a message indicating process termination to the window + SendMessage(data->hWnd, wxWM_PROC_TERMINATED, 0, (LPARAM)data); + return 0; +} -#if defined(__WIN32__) && !defined(__TWIN32__) - char * cl; - char * argp; - int clen; - HINSTANCE result; - DWORD dresult; - HWND window; - wxExecuteData *data; - DWORD tid; - - // copy the command line - clen = command.Length(); - if (!clen) return -1; - cl = (char *) calloc( 1, 256); - if (!cl) return -1; - strcpy( cl, WXSTRINGCAST command); - - // isolate command and arguments - argp = strchr( cl, ' '); - if (argp) - *argp++ = '\0'; +// window procedure of a hidden window which is created just to receive +// the notification message when a process exits +LRESULT APIENTRY _EXPORT wxExecuteWindowCbk(HWND hWnd, UINT message, + WPARAM wParam, LPARAM lParam) +{ + if ( message == wxWM_PROC_TERMINATED ) + { + DestroyWindow(hWnd); // we don't need it any more + + wxExecuteData *data = (wxExecuteData *)lParam; + if ( data->handler ) + { + data->handler->OnTerminate((int)data->dwProcessId, + (int)data->dwExitCode); + } + + if ( data->state ) + { + // we're executing synchronously, tell the waiting thread + // that the process finished + data->state = 0; + } + else + { + // asynchronous execution - we should do the clean up + delete data; + } + + return 0; + } + else + { + return DefWindowProc(hWnd, message, wParam, lParam); + } +} +#endif // Win32 -#ifdef __GNUWIN32__ - result = ShellExecute((HWND) (wxTheApp->GetTopWindow() ? (HWND) wxTheApp->GetTopWindow()->GetHWND() : NULL), - (const wchar_t) "open", (const wchar_t) cl, (const wchar_t) argp, - (const wchar_t) NULL, SW_SHOWNORMAL); -#else - result = ShellExecute( (HWND) (wxTheApp->GetTopWindow() ? wxTheApp->GetTopWindow()->GetHWND() : NULL), - "open", cl, argp, NULL, SW_SHOWNORMAL); -#endif +long wxExecute(const wxString& cmd, bool sync, wxProcess *handler) +{ + wxCHECK_MSG( !!cmd, 0, wxT("empty command in wxExecute") ); + + wxString command; +#if wxUSE_IPC + // DDE hack: this is really not pretty, but we need to allow this for + // transparent handling of DDE servers in wxMimeTypesManager. Usually it + // returns the command which should be run to view/open/... a file of the + // given type. Sometimes, however, this command just launches the server + // and an additional DDE request must be made to really open the file. To + // keep all this well hidden from the application, we allow a special form + // of command: WX_DDE::DDE_SERVER:DDE_TOPIC:DDE_COMMAND in which + // case we execute just and process the rest below + wxString ddeServer, ddeTopic, ddeCommand; + static const size_t lenDdePrefix = 7; // strlen("WX_DDE:") + if ( cmd.Left(lenDdePrefix) == _T("WX_DDE#") ) + { + const wxChar *p = cmd.c_str() + 7; + while ( *p && *p != _T('#') ) + { + command += *p++; + } + + if ( *p ) + { + // skip '#' + p++; + } + else + { + wxFAIL_MSG(_T("invalid WX_DDE command in wxExecute")); + } + + while ( *p && *p != _T('#') ) + { + ddeServer += *p++; + } + + if ( *p ) + { + // skip '#' + p++; + } + else + { + wxFAIL_MSG(_T("invalid WX_DDE command in wxExecute")); + } + + while ( *p && *p != _T('#') ) + { + ddeTopic += *p++; + } + + if ( *p ) + { + // skip '#' + p++; + } + else + { + wxFAIL_MSG(_T("invalid WX_DDE command in wxExecute")); + } + + while ( *p ) + { + ddeCommand += *p++; + } + } + else +#endif // wxUSE_IPC + { + // no DDE + command = cmd; + } - if (((long)result) <= 32) { - free(cl); - - wxLogSysError(_("Can't execute command '%s'"), command.c_str()); - return 0; - } - - // Alloc data - data = new wxExecuteData; - - // Create window - window = CreateWindow(wxPanelClassName, NULL, 0, 0, 0, 0, 0, NULL, - (HMENU) NULL, wxGetInstance(), 0); - - FARPROC ExecuteWindowInstance = MakeProcInstance((FARPROC) wxExecuteWindowCbk, - wxGetInstance()); - - SetWindowLong(window, GWL_WNDPROC, (LONG) ExecuteWindowInstance); - SetWindowLong(window, GWL_USERDATA, (LONG) data); - - data->process = result; - data->window = window; - data->state = sync; - data->handler = (sync) ? NULL : handler; - - dresult = (DWORD)CreateThread(NULL, 0, - (LPTHREAD_START_ROUTINE)wxExecuteThread, - (void *)data, 0, &tid); - if (dresult == 0) { - wxDebugMsg("wxExecute PANIC: I can't create the waiting thread !"); - DestroyWindow(window); - return (long)result; - } - - if (!sync) - { - free(cl); - return (long)result; - } - - // waiting until command executed - while (data->state) - wxYield(); - - free(cl); - return 0; -#else - long instanceID = WinExec((LPCSTR) WXSTRINGCAST command, SW_SHOW); - if (instanceID < 32) return(0); - - if (sync) { - int running; - do { - wxYield(); - running = GetModuleUsage((HANDLE)instanceID); - } while (running); - } - return(instanceID); -#endif +#if defined(__WIN32__) && !defined(__TWIN32__) + // the old code is disabled because we really need a process handle + // if we want to execute it asynchronously or even just get its + // return code and for this we must use CreateProcess() and not + // ShellExecute() +#if 0 + // isolate command and arguments + wxString commandName; + bool insideQuotes = FALSE; + const char *pc; + for ( pc = command.c_str(); *pc != '\0'; pc++ ) + { + switch ( *pc ) + { + case ' ': + case '\t': + if ( !insideQuotes ) + break; + // fall through + + case '"': + insideQuotes = !insideQuotes; + // fall through + + default: + commandName += *pc; + continue; // skip the next break + } + + // only reached for space not inside quotes + break; + } + wxString commandArgs = pc; + + wxWindow *winTop = wxTheApp->GetTopWindow(); + HWND hwndTop = (HWND)(winTop ? winTop->GetHWND() : 0); + + HANDLE result; +#ifdef __GNUWIN32__ + result = ShellExecute(hwndTop, + (const wchar_t)"open", + (const wchar_t)commandName, + (const wchar_t)commandArgs, + (const wchar_t)NULL, + SW_SHOWNORMAL); +#else // !GNUWIN32 + result = ShellExecute(hwndTop, "open", commandName, + commandArgs, NULL, SW_SHOWNORMAL); +#endif // GNUWIN32 + + if ( ((long)result) <= 32 ) + wxLogSysError(_("Can't execute command '%s'"), command.c_str()); + + return result; +#else // 1 + + HANDLE hpipeRead[2]; + HANDLE hpipeWrite[2]; + HANDLE hStdIn = INVALID_HANDLE_VALUE; + HANDLE hStdOut = INVALID_HANDLE_VALUE; + + // we need to inherit handles in the child process if we want to redirect + // its IO + BOOL inheritHandles = FALSE; + + // open the pipes to which child process IO will be redirected if needed + if ( handler && handler->IsRedirected() ) + { + SECURITY_ATTRIBUTES security; + + security.nLength = sizeof(security); + security.lpSecurityDescriptor = NULL; + security.bInheritHandle = TRUE; + + if ( !::CreatePipe(&hpipeRead[0], &hpipeRead[1], &security, 0) ) + { + wxLogSysError(_("Can't create the inter-process read pipe")); + + return 0; + } + + if ( !::CreatePipe(&hpipeWrite[0], &hpipeWrite[1], &security, 0) ) + { + ::CloseHandle(hpipeRead[0]); + ::CloseHandle(hpipeRead[1]); + + wxLogSysError(_("Can't create the inter-process write pipe")); + + return 0; + } + + // We need to save the old stdio handles to restore them after the call + // to CreateProcess + hStdIn = ::GetStdHandle(STD_INPUT_HANDLE); + hStdOut = ::GetStdHandle(STD_OUTPUT_HANDLE); + + if ( !::SetStdHandle(STD_INPUT_HANDLE, hpipeRead[0]) || + !::SetStdHandle(STD_OUTPUT_HANDLE, hpipeWrite[1]) ) + { + wxLogDebug(_T("Failed to change stdin/out handles")); + } + + inheritHandles = TRUE; + } + + // create the process + STARTUPINFO si; + wxZeroMemory(si); + + si.cb = sizeof(si); + + PROCESS_INFORMATION pi; + + if ( ::CreateProcess( + NULL, // application name (use only cmd line) + (wxChar *)command.c_str(), // full command line + NULL, // security attributes: defaults for both + NULL, // the process and its main thread + inheritHandles, // inherit handles if we need pipes + CREATE_DEFAULT_ERROR_MODE | + CREATE_SUSPENDED, // flags + NULL, // environment (use the same) + NULL, // current directory (use the same) + &si, // startup info (unused here) + &pi // process info + ) == 0 ) + { + if ( inheritHandles ) + { + ::CloseHandle(hpipeWrite[0]); + ::CloseHandle(hpipeWrite[1]); + ::CloseHandle(hpipeRead[0]); + ::CloseHandle(hpipeRead[1]); + } + + wxLogSysError(_("Execution of command '%s' failed"), command.c_str()); + + return 0; + } + + // Restore the old stdio handles + if ( inheritHandles ) + { + if ( !::SetStdHandle(STD_INPUT_HANDLE, hStdIn) || + !::SetStdHandle(STD_OUTPUT_HANDLE, hStdOut) ) + { + wxLogDebug(_T("Failed to restore old stdin/out handles")); + } + + // they're still opened in child process + ::CloseHandle(hpipeWrite[1]); + ::CloseHandle(hpipeRead[0]); + + // We can now initialize the wxStreams + wxInputStream *inStream = new wxPipeInputStream(hpipeWrite[0]); + wxOutputStream *outStream = new wxPipeOutputStream(hpipeRead[1]); + + handler->SetPipeStreams(inStream, outStream); + } + + // register the class for the hidden window used for the notifications + if ( !gs_classForHiddenWindow ) + { + gs_classForHiddenWindow = _T("wxHiddenWindow"); + + WNDCLASS wndclass; + wxZeroMemory(wndclass); + wndclass.lpfnWndProc = (WNDPROC)wxExecuteWindowCbk; + wndclass.hInstance = wxGetInstance(); + wndclass.lpszClassName = gs_classForHiddenWindow; + + if ( !::RegisterClass(&wndclass) ) + { + wxLogLastError("RegisterClass(hidden window)"); + } + } + + // create a hidden window to receive notification about process + // termination + HWND hwnd = ::CreateWindow(gs_classForHiddenWindow, NULL, + WS_OVERLAPPEDWINDOW, + 0, 0, 0, 0, NULL, + (HMENU)NULL, wxGetInstance(), 0); + wxASSERT_MSG( hwnd, wxT("can't create a hidden window for wxExecute") ); + + // Alloc data + wxExecuteData *data = new wxExecuteData; + data->hProcess = pi.hProcess; + data->dwProcessId = pi.dwProcessId; + data->hWnd = hwnd; + data->state = sync; + if ( sync ) + { + // handler may be !NULL for capturing program output, but we don't use + // it wxExecuteData struct in this case + data->handler = NULL; + } + else + { + // may be NULL or not + data->handler = handler; + } + + DWORD tid; + HANDLE hThread = ::CreateThread(NULL, + 0, + (LPTHREAD_START_ROUTINE)wxExecuteThread, + (void *)data, + 0, + &tid); + + // resume process we created now - whether the thread creation succeeded or + // not + if ( ::ResumeThread(pi.hThread) == (DWORD)-1 ) + { + // ignore it - what can we do? + wxLogLastError("ResumeThread in wxExecute"); + } + + // close unneeded handle + if ( !::CloseHandle(pi.hThread) ) + wxLogLastError("CloseHandle(hThread)"); + + if ( !hThread ) + { + wxLogLastError("CreateThread in wxExecute"); + + DestroyWindow(hwnd); + delete data; + + // the process still started up successfully... + return pi.dwProcessId; + } + +#if wxUSE_IPC + // second part of DDE hack: now establish the DDE conversation with the + // just launched process + if ( !!ddeServer ) + { + wxDDEClient client; + wxConnectionBase *conn = client.MakeConnection(_T(""), + ddeServer, + ddeTopic); + if ( !conn || !conn->Execute(ddeCommand) ) + { + wxLogError(_("Couldn't launch DDE server '%s'."), command.c_str()); + } + } +#endif // wxUSE_IPC + + if ( !sync ) + { + // clean up will be done when the process terminates + + // return the pid + return pi.dwProcessId; + } + + // waiting until command executed (disable everything while doing it) +#if wxUSE_GUI + { + wxBusyCursor bc; + + wxWindowDisabler wd; +#endif // wxUSE_GUI + + while ( data->state ) + wxYield(); + +#if wxUSE_GUI + } +#endif // wxUSE_GUI + + DWORD dwExitCode = data->dwExitCode; + delete data; + + // return the exit code + return dwExitCode; +#endif // 0/1 +#else // Win16 + long instanceID = WinExec((LPCSTR) WXSTRINGCAST command, SW_SHOW); + if (instanceID < 32) return(0); + + if (sync) { + int running; + do { + wxYield(); + running = GetModuleUsage((HINSTANCE)instanceID); + } while (running); + } + + return(instanceID); +#endif // Win16/32 } long wxExecute(char **argv, bool sync, wxProcess *handler) { - wxString command = ""; - - while (*argv != NULL) { - command += *argv; - command += ' '; - argv++; - } - command.RemoveLast(); - return wxExecute(command, sync, handler); + wxString command; + + while ( *argv != NULL ) + { + command << *argv++ << ' '; + } + + command.RemoveLast(); + + return wxExecute(command, sync, handler); +} + +// ---------------------------------------------------------------------------- +// Metafile helpers +// ---------------------------------------------------------------------------- + +extern void PixelToHIMETRIC(LONG *x, LONG *y) +{ + ScreenHDC hdcRef; + + int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE), + iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE), + iWidthPels = GetDeviceCaps(hdcRef, HORZRES), + iHeightPels = GetDeviceCaps(hdcRef, VERTRES); + + *x *= (iWidthMM * 100); + *x /= iWidthPels; + *y *= (iHeightMM * 100); + *y /= iHeightPels; +} + +extern void HIMETRICToPixel(LONG *x, LONG *y) +{ + ScreenHDC hdcRef; + + int iWidthMM = GetDeviceCaps(hdcRef, HORZSIZE), + iHeightMM = GetDeviceCaps(hdcRef, VERTSIZE), + iWidthPels = GetDeviceCaps(hdcRef, HORZRES), + iHeightPels = GetDeviceCaps(hdcRef, VERTRES); + + *x *= iWidthPels; + *x /= (iWidthMM * 100); + *y *= iHeightPels; + *y /= (iHeightMM * 100); }