X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/5ea105e0ba20c15e4d83f829e1c4faeb0a4952f0..3f8e5072f7391db2158f44c6b9209bbb3db6eb06:/src/msw/utilsexc.cpp diff --git a/src/msw/utilsexc.cpp b/src/msw/utilsexc.cpp index bcb9faf6a3..453b7efc5d 100644 --- a/src/msw/utilsexc.cpp +++ b/src/msw/utilsexc.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: utilsexec.cpp +// Name: msw/utilsexec.cpp // Purpose: Various utilities // Author: Julian Smart // Modified by: @@ -9,45 +9,52 @@ // 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" -#include "wx/process.h" -#include "wx/msw/private.h" +#ifdef __WIN32__ + #include "wx/stream.h" + #include "wx/process.h" +#endif -#include +#include "wx/msw/private.h" #include #if !defined(__GNUWIN32__) && !defined(__WXWINE__) && !defined(__SALFORDC__) -#include + #include #ifndef __MWERKS__ -#include + #include #endif #endif -#ifdef __GNUWIN32__ -#ifndef __TWIN32__ -#include -#include -#endif +#if defined(__GNUWIN32__) && !defined(__TWIN32__) + #include + #include #endif #if defined(__WIN32__) && !defined(__WXWINE__) @@ -68,9 +75,30 @@ #endif #include +#if wxUSE_IPC + #include "wx/dde.h" // for WX_DDE hack in wxExecute +#endif // wxUSE_IPC + +// ---------------------------------------------------------------------------- +// 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 { @@ -94,6 +122,97 @@ public: }; +#ifdef __WIN32__ +// ---------------------------------------------------------------------------- +// 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) +{ + m_hInput = hInput; +} + +wxPipeInputStream::~wxPipeInputStream() +{ + ::CloseHandle(m_hInput); +} + +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; +} + +// ================== +// wxPipeOutputStream +// ================== + +wxPipeOutputStream::wxPipeOutputStream(HANDLE hOutput) +{ + m_hOutput = hOutput; +} + +wxPipeOutputStream::~wxPipeOutputStream() +{ + ::CloseHandle(m_hOutput); +} + +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; +} + +#endif // __WIN32__ + +// ============================================================================ +// implementation +// ============================================================================ + #ifdef __WIN32__ static DWORD wxExecuteThread(wxExecuteData *data) { @@ -106,14 +225,13 @@ static DWORD wxExecuteThread(wxExecuteData *data) } wxASSERT_MSG( data->dwExitCode != STILL_ACTIVE, - "process should have terminated" ); + 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; } -#endif // window procedure of a hidden window which is created just to receive // the notification message when a process exits @@ -142,16 +260,91 @@ LRESULT APIENTRY _EXPORT wxExecuteWindowCbk(HWND hWnd, UINT message, // asynchronous execution - we should do the clean up delete data; } - } - return 0; + return 0; + } + else + { + return DefWindowProc(hWnd, message, wParam, lParam); + } } +#endif // Win32 -extern char wxPanelClassName[]; - -long wxExecute(const wxString& command, bool sync, wxProcess *handler) +long wxExecute(const wxString& cmd, bool sync, wxProcess *handler) { - wxCHECK_MSG( !!command, 0, "empty command in wxExecute" ); + 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 defined(__WIN32__) && !defined(__TWIN32__) // the old code is disabled because we really need a process handle @@ -185,7 +378,6 @@ long wxExecute(const wxString& command, bool sync, wxProcess *handler) // only reached for space not inside quotes break; } - wxString commandArgs = pc; wxWindow *winTop = wxTheApp->GetTopWindow(); @@ -209,13 +401,59 @@ long wxExecute(const wxString& command, bool sync, wxProcess *handler) 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; -#ifdef __GNUWIN32__ - memset(&si, 0, sizeof(si)); -#else - ::ZeroMemory(&si, sizeof(si)); -#endif + wxZeroMemory(si); si.cb = sizeof(si); @@ -223,36 +461,75 @@ long wxExecute(const wxString& command, bool sync, wxProcess *handler) if ( ::CreateProcess( NULL, // application name (use only cmd line) - (char *)command.c_str(), // full command line + (wxChar *)command.c_str(), // full command line NULL, // security attributes: defaults for both NULL, // the process and its main thread - FALSE, // don't inherit handles - CREATE_DEFAULT_ERROR_MODE, // flags + 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; } - // close unneeded handle - if ( !::CloseHandle(pi.hThread) ) - wxLogLastError("CloseHandle(hThread)"); + // 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(wxPanelClassName, NULL, 0, 0, 0, 0, 0, NULL, + HWND hwnd = ::CreateWindow(gs_classForHiddenWindow, NULL, + WS_OVERLAPPEDWINDOW, + 0, 0, 0, 0, NULL, (HMENU)NULL, wxGetInstance(), 0); - wxASSERT_MSG( hwnd, "can't create a hidden window for wxExecute" ); - - FARPROC ExecuteWindowInstance = MakeProcInstance((FARPROC)wxExecuteWindowCbk, - wxGetInstance()); - - ::SetWindowLong(hwnd, GWL_WNDPROC, (LONG) ExecuteWindowInstance); + wxASSERT_MSG( hwnd, wxT("can't create a hidden window for wxExecute") ); // Alloc data wxExecuteData *data = new wxExecuteData; @@ -262,8 +539,8 @@ long wxExecute(const wxString& command, bool sync, wxProcess *handler) data->state = sync; if ( sync ) { - wxASSERT_MSG( !handler, "wxProcess param ignored for sync execution" ); - + // handler may be !NULL for capturing program output, but we don't use + // it wxExecuteData struct in this case data->handler = NULL; } else @@ -280,6 +557,18 @@ long wxExecute(const wxString& command, bool sync, wxProcess *handler) 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"); @@ -291,6 +580,22 @@ long wxExecute(const wxString& command, bool sync, wxProcess *handler) 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 @@ -299,10 +604,21 @@ long wxExecute(const wxString& command, bool sync, wxProcess *handler) return pi.dwProcessId; } - // waiting until command executed + // 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; @@ -317,7 +633,7 @@ long wxExecute(const wxString& command, bool sync, wxProcess *handler) int running; do { wxYield(); - running = GetModuleUsage((HANDLE)instanceID); + running = GetModuleUsage((HINSTANCE)instanceID); } while (running); } @@ -338,3 +654,37 @@ long wxExecute(char **argv, bool sync, wxProcess *handler) 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); +}