#include "wx/menu.h"
#include "wx/msgdlg.h"
#include "wx/textdlg.h"
+ #include "wx/listbox.h"
#endif
+#include "wx/txtstrm.h"
+
#include "wx/process.h"
#ifdef __WINDOWS__
virtual bool OnInit();
};
+// Define an array of process pointers used by MyFrame
+class MyPipedProcess;
+WX_DEFINE_ARRAY(MyPipedProcess *, MyProcessesArray);
+
// Define a new frame type: this is going to be our main frame
class MyFrame : public wxFrame
{
// event handlers (these functions should _not_ be virtual)
void OnQuit(wxCommandEvent& event);
+ void OnClear(wxCommandEvent& event);
+
void OnSyncExec(wxCommandEvent& event);
void OnAsyncExec(wxCommandEvent& event);
void OnShell(wxCommandEvent& event);
+ void OnExecWithRedirect(wxCommandEvent& event);
void OnDDEExec(wxCommandEvent& event);
void OnAbout(wxCommandEvent& event);
+ // polling output of async processes
+ void OnIdle(wxIdleEvent& event);
+
+ // for MyPipedProcess
+ void OnProcessTerminated(MyPipedProcess *process)
+ { m_running.Remove(process); }
+ wxListBox *GetLogListBox() const { return m_lbox; }
+
private:
wxString m_cmdLast;
+ wxListBox *m_lbox;
+
+ MyProcessesArray m_running;
+
// any class wishing to process wxWindows events must use this macro
DECLARE_EVENT_TABLE()
};
class MyProcess : public wxProcess
{
public:
- MyProcess(wxFrame *parent, const wxString& cmd)
+ MyProcess(MyFrame *parent, const wxString& cmd)
: wxProcess(parent), m_cmd(cmd)
{
m_parent = parent;
// cases
virtual void OnTerminate(int pid, int status);
-private:
- wxFrame *m_parent;
+protected:
+ MyFrame *m_parent;
wxString m_cmd;
};
+// A specialization of MyProcess for redirecting the output
+class MyPipedProcess : public MyProcess
+{
+public:
+ MyPipedProcess(MyFrame *parent, const wxString& cmd)
+ : MyProcess(parent, cmd)
+ {
+ Redirect();
+ }
+
+ virtual void OnTerminate(int pid, int status);
+
+ bool HasInput();
+};
+
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
{
// menu items
Exec_Quit = 100,
+ Exec_ClearLog,
Exec_SyncExec = 200,
Exec_AsyncExec,
Exec_Shell,
Exec_DDEExec,
+ Exec_Redirect,
Exec_About = 300
};
// simple menu events like this the static method is much simpler.
BEGIN_EVENT_TABLE(MyFrame, wxFrame)
EVT_MENU(Exec_Quit, MyFrame::OnQuit)
+ EVT_MENU(Exec_ClearLog, MyFrame::OnClear)
EVT_MENU(Exec_SyncExec, MyFrame::OnSyncExec)
EVT_MENU(Exec_AsyncExec, MyFrame::OnAsyncExec)
EVT_MENU(Exec_Shell, MyFrame::OnShell)
+ EVT_MENU(Exec_Redirect, MyFrame::OnExecWithRedirect)
EVT_MENU(Exec_DDEExec, MyFrame::OnDDEExec)
EVT_MENU(Exec_About, MyFrame::OnAbout)
+
+ EVT_IDLE(MyFrame::OnIdle)
END_EVENT_TABLE()
// Create a new application object: this macro will allow wxWindows to create
#endif
// set the frame icon
+#ifndef __WXGTK__
SetIcon(wxICON(mondrian));
+#endif
// create a menu bar
wxMenu *menuFile = new wxMenu(_T(""), wxMENU_TEAROFF);
+ menuFile->Append(Exec_ClearLog, _T("&Clear log\tCtrl-C"),
+ _T("Clear the log window"));
+ menuFile->AppendSeparator();
menuFile->Append(Exec_Quit, _T("E&xit\tAlt-X"), _T("Quit this program"));
wxMenu *execMenu = new wxMenu;
_T("Launch a program and return immediately"));
execMenu->Append(Exec_Shell, _T("Execute &shell command...\tCtrl-S"),
_T("Launch a shell and execute a command in it"));
+ execMenu->Append(Exec_Redirect, _T("Capture command &output...\tCtrl-O"),
+ _T("Launch a program and capture its output"));
#ifdef __WINDOWS__
execMenu->AppendSeparator();
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
+ // create the listbox in which we will show misc messages as they come
+ m_lbox = new wxListBox(this, -1);
+
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
- CreateStatusBar(2);
- SetStatusText(_T("Welcome to wxWindows!"));
+ CreateStatusBar();
+ SetStatusText(_T("Welcome to wxWindows exec sample!"));
#endif // wxUSE_STATUSBAR
}
Close(TRUE);
}
+void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event))
+{
+ m_lbox->Clear();
+}
+
void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
{
wxMessageBox(_T("Exec sample\n© 2000 Vadim Zeitlin"),
if ( !cmd )
return;
+ wxLogStatus(_T("'%s' is running please wait..."), cmd.c_str());
+
int code = wxExecute(cmd, TRUE /* sync */);
+
wxLogStatus(_T("Process '%s' terminated with exit code %d."),
cmd.c_str(), code);
m_cmdLast = cmd;
return;
wxProcess *process = new MyProcess(this, cmd);
- if ( !wxExecute(cmd, FALSE /* async */, process) )
+ long pid = wxExecute(cmd, FALSE /* async */, process);
+ if ( !pid )
{
wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
}
else
{
+ wxLogStatus(_T("Process %ld (%s) launched."), pid, cmd.c_str());
+
m_cmdLast = cmd;
}
}
m_cmdLast = cmd;
}
+void MyFrame::OnExecWithRedirect(wxCommandEvent& WXUNUSED(event))
+{
+ wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
+ DIALOG_TITLE,
+ m_cmdLast);
+
+ if ( !cmd )
+ return;
+
+ bool sync;
+ switch ( wxMessageBox(_T("Execute it synchronously?"),
+ _T("Exec question"),
+ wxYES_NO | wxCANCEL | wxICON_QUESTION, this) )
+ {
+ case wxYES:
+ sync = TRUE;
+ break;
+
+ case wxNO:
+ sync = FALSE;
+ break;
+
+ default:
+ return;
+ }
+
+ if ( sync )
+ {
+ wxArrayString output;
+ int code = wxExecute(cmd, output);
+ wxLogStatus(_T("command '%s' terminated with exit code %d."),
+ cmd.c_str(), code);
+
+ if ( code != -1 )
+ {
+ m_lbox->Append(wxString::Format(_T("--- Output of '%s' ---"),
+ cmd.c_str()));
+
+ size_t count = output.GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ m_lbox->Append(output[n]);
+ }
+ }
+ }
+ else // async exec
+ {
+ MyPipedProcess *process = new MyPipedProcess(this, cmd);
+ if ( !wxExecute(cmd, FALSE /* async */, process) )
+ {
+ wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
+
+ delete process;
+ }
+ else
+ {
+ m_running.Add(process);
+ }
+ }
+
+ m_cmdLast = cmd;
+}
+
void MyFrame::OnDDEExec(wxCommandEvent& WXUNUSED(event))
{
#ifdef __WINDOWS__
#endif // __WINDOWS__
}
+// input polling
+void MyFrame::OnIdle(wxIdleEvent& event)
+{
+ size_t count = m_running.GetCount();
+ for ( size_t n = 0; n < count; n++ )
+ {
+ if ( m_running[n]->HasInput() )
+ {
+ event.RequestMore();
+ }
+ }
+}
+
// ----------------------------------------------------------------------------
// MyProcess
// ----------------------------------------------------------------------------
// we're not needed any more
delete this;
}
+
+// ----------------------------------------------------------------------------
+// MyPipedProcess
+// ----------------------------------------------------------------------------
+
+bool MyPipedProcess::HasInput()
+{
+ wxInputStream& is = *GetInputStream();
+ if ( !is.Eof() )
+ {
+ wxTextInputStream tis(is);
+
+ // this assumes that the output is always line buffered
+ wxString msg;
+ msg << m_cmd << _T(": ") << tis.ReadLine();
+
+ m_parent->GetLogListBox()->Append(msg);
+
+ return TRUE;
+ }
+ else
+ {
+ return FALSE;
+ }
+}
+
+void MyPipedProcess::OnTerminate(int pid, int status)
+{
+ // show the rest of the output
+ while ( HasInput() )
+ ;
+
+ m_parent->OnProcessTerminated(this);
+
+ MyProcess::OnTerminate(pid, status);
+}
projects / wxWidgets.git / blobdiff