/////////////////////////////////////////////////////////////////////////////
-// Name: utilsexec.cpp
+// Name: msw/utilsexec.cpp
// Purpose: Various utilities
// Author: Julian Smart
// Modified by:
// 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 <windows.h>
+#include "wx/msw/private.h"
#include <ctype.h>
-#if !defined(__GNUWIN32__) && !defined(__SALFORDC__)
-#include <direct.h>
+#if !defined(__GNUWIN32__) && !defined(__WXWINE__) && !defined(__SALFORDC__)
+ #include <direct.h>
#ifndef __MWERKS__
-#include <dos.h>
+ #include <dos.h>
#endif
#endif
-#ifdef __GNUWIN32__
-#ifndef __TWIN32__
-#include <sys/unistd.h>
-#include <sys/stat.h>
-#endif
+#if defined(__GNUWIN32__) && !defined(__TWIN32__)
+ #include <sys/unistd.h>
+ #include <sys/stat.h>
#endif
-#ifdef __WIN32__
+#if defined(__WIN32__) && !defined(__WXWINE__)
#include <io.h>
#ifndef __GNUWIN32__
#endif
#include <stdarg.h>
+#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
{
public:
~wxExecuteData()
{
+#ifndef __WIN16__
if ( !::CloseHandle(hProcess) )
{
wxLogLastError("CloseHandle(hProcess)");
}
+#endif
}
HWND hWnd; // window to send wxWM_PROC_TERMINATED to
};
+#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)
{
}
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
data->handler->OnTerminate((int)data->dwProcessId,
(int)data->dwExitCode);
}
-
+
if ( data->state )
{
// we're executing synchronously, tell the waiting thread
// 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:<command>:DDE_SERVER:DDE_TOPIC:DDE_COMMAND in which
+ // case we execute just <command> 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
// only reached for space not inside quotes
break;
}
-
wxString commandArgs = pc;
wxWindow *winTop = wxTheApp->GetTopWindow();
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;
- ::ZeroMemory(&si, sizeof(si));
+ wxZeroMemory(si);
+
si.cb = sizeof(si);
PROCESS_INFORMATION pi;
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;
data->hProcess = pi.hProcess;
data->dwProcessId = pi.dwProcessId;
data->hWnd = hwnd;
data->state = sync;
- data->handler = handler;
+ 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,
&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");
// 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
+
+ // 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 pi.dwProcessId;
+ // 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((HANDLE)instanceID);
+ running = GetModuleUsage((HINSTANCE)instanceID);
} while (running);
}
long wxExecute(char **argv, bool sync, wxProcess *handler)
{
wxString command;
-
+
while ( *argv != NULL )
{
command << *argv++ << ' ';
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);
+}
projects / wxWidgets.git / blobdiff