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added demo of capturing program output - doesn't work very well though

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6398 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2000-03-02 16:17:43 +00:00
parent 42d14d4e8f
commit d8e41d423d
1 changed files with 79 additions and 4 deletions
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83
samples/exec/exec.cpp
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@ -38,8 +38,11 @@
#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__
@ -73,16 +76,24 @@ public:
// 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);
// for MyPipedProcess
wxListBox *GetLogListBox() const { return m_lbox; }
private:
wxString m_cmdLast;
wxListBox *m_lbox;
// any class wishing to process wxWindows events must use this macro
DECLARE_EVENT_TABLE()
};
@ -91,7 +102,7 @@ private:
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;
@ -102,11 +113,24 @@ public:
// 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)
{
m_needPipe = TRUE;
}
virtual void OnTerminate(int pid, int status);
};
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
@ -116,10 +140,12 @@ enum
{
// menu items
Exec_Quit = 100,
Exec_ClearLog,
Exec_SyncExec = 200,
Exec_AsyncExec,
Exec_Shell,
Exec_DDEExec,
Exec_Redirect,
Exec_About = 300
};
@ -134,10 +160,12 @@ static const wxChar *DIALOG_TITLE = _T("Exec sample");
// 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)
@ -196,6 +224,9 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
// 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;
@ -205,6 +236,8 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
_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();
@ -224,7 +257,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
SetMenuBar(menuBar);
// create the listbox in which we will show misc messages as they come
m_listbox = new wxListBox(this, -1);
m_lbox = new wxListBox(this, -1);
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
@ -242,6 +275,11 @@ void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
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"),
@ -300,6 +338,28 @@ void MyFrame::OnShell(wxCommandEvent& WXUNUSED(event))
m_cmdLast = cmd;
}
void MyFrame::OnExecWithRedirect(wxCommandEvent& WXUNUSED(event))
{
wxString cmd = wxGetTextFromUser(_T("Enter the command: "),
DIALOG_TITLE,
m_cmdLast);
if ( !cmd )
return;
wxProcess *process = new MyPipedProcess(this, cmd);
if ( !wxExecute(cmd, FALSE /* async */, process) )
{
wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
delete process;
}
else
{
m_cmdLast = cmd;
}
}
void MyFrame::OnDDEExec(wxCommandEvent& WXUNUSED(event))
{
#ifdef __WINDOWS__
@ -354,3 +414,18 @@ void MyProcess::OnTerminate(int pid, int status)
// we're not needed any more
delete this;
}
void MyPipedProcess::OnTerminate(int pid, int status)
{
// show the program output
wxListBox *lbox = m_parent->GetLogListBox();
lbox->Append(wxString::Format(_T("--- Output of '%s' ---"), m_cmd.c_str()));
wxTextInputStream tis(*m_in_stream);
while ( !m_in_stream->LastError() )
{
lbox->Append(tis.ReadLine());
}
MyProcess::OnTerminate(pid, status);
}