/////////////////////////////////////////////////////////////////////////////
-// Name: msw/utilsexec.cpp
+// Name: src/msw/utilsexc.cpp
// Purpose: wxExecute implementation for MSW
// Author: Julian Smart
// Modified by:
// Created: 04/01/98
// RCS-ID: $Id$
-// Copyright: (c) 1998-2002 wxWindows dev team
+// Copyright: (c) 1998-2002 wxWidgets dev team
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
// headers
// ----------------------------------------------------------------------------
-#ifdef __GNUG__
- #pragma implementation
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#include "wx/log.h"
#endif
-#ifdef __WIN32__
- #include "wx/stream.h"
- #include "wx/process.h"
-#endif
+#include "wx/stream.h"
+#include "wx/process.h"
#include "wx/apptrait.h"
+#include "wx/module.h"
+
#include "wx/msw/private.h"
#include <ctype.h>
#include <sys/stat.h>
#endif
-#if defined(__WIN32__) && !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
-#ifndef __UNIX__
- #include <io.h>
-#endif
+#if !defined(__WXMICROWIN__) && !defined(__WXWINCE__)
+ #ifndef __UNIX__
+ #include <io.h>
+ #endif
-#ifndef __GNUWIN32__
-#include <shellapi.h>
-#endif
+ #ifndef __GNUWIN32__
+ #include <shellapi.h>
+ #endif
#endif
#include <stdio.h>
#include "wx/dde.h" // for WX_DDE hack in wxExecute
#endif // wxUSE_IPC
+// implemented in utils.cpp
+extern "C" WXDLLIMPEXP_BASE HWND
+wxCreateHiddenWindow(LPCTSTR *pclassname, LPCTSTR classname, WNDPROC wndproc);
+
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
// 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 *wxMSWEXEC_WNDCLASSNAME = wxT("_wxExecute_Internal_Class");
static const wxChar *gs_classForHiddenWindow = NULL;
// ----------------------------------------------------------------------------
public:
~wxExecuteData()
{
-#ifndef __WIN16__
if ( !::CloseHandle(hProcess) )
{
wxLogLastError(wxT("CloseHandle(hProcess)"));
}
-#endif
}
HWND hWnd; // window to send wxWM_PROC_TERMINATED to
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
+ bool state; // set to false when the process finishes
+};
+
+class wxExecuteModule : public wxModule
+{
+public:
+ virtual bool OnInit() { return true; }
+ virtual void OnExit()
+ {
+ if ( *gs_classForHiddenWindow )
+ {
+ if ( !::UnregisterClass(wxMSWEXEC_WNDCLASSNAME, wxGetInstance()) )
+ {
+ wxLogLastError(_T("UnregisterClass(wxExecClass)"));
+ }
+
+ gs_classForHiddenWindow = NULL;
+ }
+ }
+
+private:
+ DECLARE_DYNAMIC_CLASS(wxExecuteModule)
};
-#if defined(__WIN32__) && wxUSE_STREAMS && !defined(__WXWINCE__)
+#if wxUSE_STREAMS && !defined(__WXWINCE__)
// ----------------------------------------------------------------------------
// wxPipeStreams
wxPipeInputStream(HANDLE hInput);
virtual ~wxPipeInputStream();
- // returns TRUE if the pipe is still opened
+ // returns true if the pipe is still opened
bool IsOpened() const { return m_hInput != INVALID_HANDLE_VALUE; }
- // returns TRUE if there is any data to be read from the pipe
+ // returns true if there is any data to be read from the pipe
virtual bool CanRead() const;
protected:
{
public:
wxPipeOutputStream(HANDLE hOutput);
- virtual ~wxPipeOutputStream();
+ virtual ~wxPipeOutputStream() { Close(); }
+ bool Close();
protected:
size_t OnSysWrite(const void *buffer, size_t len);
// default ctor doesn't do anything
wxPipe() { m_handles[Read] = m_handles[Write] = INVALID_HANDLE_VALUE; }
- // create the pipe, return TRUE if ok, FALSE on error
+ // create the pipe, return true if ok, false on error
bool Create()
{
// default secutiry attributes
{
wxLogSysError(_("Failed to create an anonymous pipe"));
- return FALSE;
+ return false;
}
- return TRUE;
+ return true;
}
- // return TRUE if we were created successfully
+ // return true if we were created successfully
bool IsOk() const { return m_handles[Read] != INVALID_HANDLE_VALUE; }
// return the descriptor for one of the pipe ends
- HANDLE operator[](Direction which) const
- {
- wxASSERT_MSG( which >= 0 && (size_t)which < WXSIZEOF(m_handles),
- _T("invalid pipe index") );
-
- return m_handles[which];
- }
+ HANDLE operator[](Direction which) const { return m_handles[which]; }
// detach a descriptor, meaning that the pipe dtor won't close it, and
// return it
HANDLE Detach(Direction which)
{
- wxASSERT_MSG( which >= 0 && (size_t)which < WXSIZEOF(m_handles),
- _T("invalid pipe index") );
-
HANDLE handle = m_handles[which];
m_handles[which] = INVALID_HANDLE_VALUE;
// implementation
// ============================================================================
-#ifdef __WIN32__
-
// ----------------------------------------------------------------------------
// process termination detecting support
// ----------------------------------------------------------------------------
bool wxPipeInputStream::CanRead() const
{
if ( !IsOpened() )
- return FALSE;
+ return false;
DWORD nAvailable;
wxLogLastError(_T("PeekNamedPipe"));
}
- // don't try to continue reading from a pipe if an error occured or if
+ // don't try to continue reading from a pipe if an error occurred or if
// it had been closed
::CloseHandle(m_hInput);
: wxSTREAM_READ_ERROR;
}
- // bytesRead is set to 0, as desired, if an error occured
+ // bytesRead is set to 0, as desired, if an error occurred
return bytesRead;
}
wxPipeOutputStream::wxPipeOutputStream(HANDLE hOutput)
{
m_hOutput = hOutput;
+
+ // unblock the pipe to prevent deadlocks when we're writing to the pipe
+ // from which the child process can't read because it is writing in its own
+ // end of it
+ DWORD mode = PIPE_READMODE_BYTE | PIPE_NOWAIT;
+ if ( !::SetNamedPipeHandleState
+ (
+ m_hOutput,
+ &mode,
+ NULL, // collection count (we don't set it)
+ NULL // timeout (we don't set it neither)
+ ) )
+ {
+ wxLogLastError(_T("SetNamedPipeHandleState(PIPE_NOWAIT)"));
+ }
}
-wxPipeOutputStream::~wxPipeOutputStream()
+bool wxPipeOutputStream::Close()
{
- ::CloseHandle(m_hOutput);
+ return ::CloseHandle(m_hOutput) != 0;
}
+
size_t wxPipeOutputStream::OnSysWrite(const void *buffer, size_t len)
{
- DWORD bytesWritten;
-
m_lasterror = wxSTREAM_NO_ERROR;
- if ( !::WriteFile(m_hOutput, buffer, len, &bytesWritten, NULL) )
+
+ DWORD totalWritten = 0;
+ while ( len > 0 )
{
- m_lasterror = ::GetLastError() == ERROR_BROKEN_PIPE
- ? wxSTREAM_EOF
- : wxSTREAM_WRITE_ERROR;
+ DWORD chunkWritten;
+ if ( !::WriteFile(m_hOutput, buffer, len, &chunkWritten, NULL) )
+ {
+ m_lasterror = ::GetLastError() == ERROR_BROKEN_PIPE
+ ? wxSTREAM_EOF
+ : wxSTREAM_WRITE_ERROR;
+ break;
+ }
+
+ if ( !chunkWritten )
+ break;
+
+ buffer = (char *)buffer + chunkWritten;
+ totalWritten += chunkWritten;
+ len -= chunkWritten;
}
- return bytesWritten;
+ return totalWritten;
}
#endif // wxUSE_STREAMS
-#endif // Win32
-
// ============================================================================
// wxExecute functions family
// ============================================================================
#if wxUSE_IPC
// connect to the given server via DDE and ask it to execute the command
-static bool wxExecuteDDE(const wxString& ddeServer,
- const wxString& ddeTopic,
- const wxString& ddeCommand)
+bool
+wxExecuteDDE(const wxString& ddeServer,
+ const wxString& ddeTopic,
+ const wxString& ddeCommand)
{
- bool ok = FALSE;
+ bool ok wxDUMMY_INITIALIZE(false);
wxDDEClient client;
- wxConnectionBase *conn = client.MakeConnection(wxEmptyString,
- ddeServer,
- ddeTopic);
+ wxConnectionBase *
+ conn = client.MakeConnection(wxEmptyString, ddeServer, ddeTopic);
if ( !conn )
{
- ok = FALSE;
+ ok = false;
}
else // connected to DDE server
{
- // the added complication here is that although most
- // programs use XTYP_EXECUTE for their DDE API, some
- // important ones - like IE and other MS stuff - use
- // XTYP_REQUEST!
+ // the added complication here is that although most programs use
+ // XTYP_EXECUTE for their DDE API, some important ones -- like Word
+ // and other MS stuff - use XTYP_REQUEST!
//
- // so we try one first and then the other one if it
- // failed
+ // moreover, anotheri mportant program (IE) understands both but
+ // returns an error from Execute() so we must try Request() first
+ // to avoid doing it twice
{
+ // we're prepared for this one to fail, so don't show errors
wxLogNull noErrors;
- ok = conn->Execute(ddeCommand);
+
+ ok = conn->Request(ddeCommand) != NULL;
}
if ( !ok )
{
- // now try request - but show the errors
- ok = conn->Request(ddeCommand) != NULL;
+ // now try execute -- but show the errors
+ ok = conn->Execute(ddeCommand);
}
}
long wxExecute(const wxString& cmd, int flags, wxProcess *handler)
{
- wxCHECK_MSG( !!cmd, 0, wxT("empty command in wxExecute") );
+ wxCHECK_MSG( !cmd.empty(), 0, wxT("empty command in wxExecute") );
#if wxUSE_THREADS
// for many reasons, the code below breaks down if it's called from another
PROCESS_INFORMATION pi;
DWORD dwFlags = CREATE_SUSPENDED;
+
#ifndef __WXWINCE__
dwFlags |= CREATE_DEFAULT_ERROR_MODE ;
+#else
+ // we are assuming commands without spaces for now
+ wxString moduleName = command.BeforeFirst(wxT(' '));
+ wxString arguments = command.AfterFirst(wxT(' '));
#endif
bool ok = ::CreateProcess
(
- NULL, // application name (use only cmd line)
+ // WinCE requires appname to be non null
+ // Win32 allows for null
+#ifdef __WXWINCE__
+ (wxChar *)
+ moduleName.c_str(), // application name
+ (wxChar *)
+ arguments.c_str(), // arguments
+#else
+ 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
- redirect, // inherit handles if we use pipes
- dwFlags, // process creation flags
- NULL, // environment (use the same)
- NULL, // current directory (use the same)
- &si, // startup info (unused here)
- &pi // process info
+ command.c_str(), // full command line
+#endif
+ NULL, // security attributes: defaults for both
+ NULL, // the process and its main thread
+ redirect, // inherit handles if we use pipes
+ dwFlags, // process creation flags
+ NULL, // environment (use the same)
+ NULL, // current directory (use the same)
+ &si, // startup info (unused here)
+ &pi // process info
) != 0;
#if wxUSE_STREAMS && !defined(__WXWINCE__)
}
#endif // wxUSE_STREAMS
- // 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(wxT("RegisterClass(hidden window)"));
- }
- }
-
// create a hidden window to receive notification about process
// termination
-#ifdef __WXWINCE__
- HWND hwnd = ::CreateWindow(gs_classForHiddenWindow, NULL,
- WS_OVERLAPPED,
- 0, 0, 0, 0, NULL,
- (HMENU)NULL, wxGetInstance(), 0);
-#else
- HWND hwnd = ::CreateWindow(gs_classForHiddenWindow, NULL,
- WS_OVERLAPPEDWINDOW,
- 0, 0, 0, 0, NULL,
- (HMENU)NULL, wxGetInstance(), 0);
-#endif
+ HWND hwnd = wxCreateHiddenWindow
+ (
+ &gs_classForHiddenWindow,
+ wxMSWEXEC_WNDCLASSNAME,
+ (WNDPROC)wxExecuteWindowCbk
+ );
+
wxASSERT_MSG( hwnd, wxT("can't create a hidden window for wxExecute") );
// Alloc data
case WAIT_TIMEOUT:
wxLogDebug(_T("Timeout too small in WaitForInputIdle"));
- ok = FALSE;
+ ok = false;
break;
case 0:
// ok, process ready to accept DDE requests
ok = wxExecuteDDE(ddeServer, ddeTopic, ddeCommand);
}
+
+ if ( !ok )
+ {
+ wxLogDebug(_T("Failed to send DDE request to the process \"%s\"."),
+ cmd.c_str());
+ }
}
#endif // wxUSE_IPC
wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
wxCHECK_MSG( traits, -1, _T("no wxAppTraits in wxExecute()?") );
- // disable all app windows while waiting for the child process to finish
- void *cookie = traits->BeforeChildWaitLoop();
+ void *cookie = NULL;
+ if ( !(flags & wxEXEC_NODISABLE) )
+ {
+ // disable all app windows while waiting for the child process to finish
+ cookie = traits->BeforeChildWaitLoop();
+ }
// wait until the child process terminates
while ( data->state )
traits->AlwaysYield();
}
- traits->AfterChildWaitLoop(cookie);
+ if ( !(flags & wxEXEC_NODISABLE) )
+ {
+ // reenable disabled windows back
+ traits->AfterChildWaitLoop(cookie);
+ }
DWORD dwExitCode = data->dwExitCode;
delete data;
return wxExecute(command, flags, handler);
}
-
projects / wxWidgets.git / blobdiff