X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/4c1ef4220f5b21dd4ad618d8c29b11076e2aba1d..a0845d45830eb22769107a61a6cb3485fa21922b:/samples/exec/exec.cpp

diff --git a/samples/exec/exec.cpp b/samples/exec/exec.cpp
index 14a5ab2d2c..4ab8cdd22c 100644
--- a/samples/exec/exec.cpp
+++ b/samples/exec/exec.cpp
@@ -17,9 +17,9 @@
 // headers
 // ----------------------------------------------------------------------------
 
-#ifdef __GNUG__
-    #pragma implementation "exec.cpp"
-    #pragma interface "exec.cpp"
+#if defined(__GNUG__) && !defined(__APPLE__)
+    #pragma implementation
+    #pragma interface
 #endif
 
 // For compilers that support precompilation, includes "wx/wx.h".
@@ -30,20 +30,33 @@
 #endif
 
 // for all others, include the necessary headers (this file is usually all you
-// need because it includes almost all "standard" wxWindows headers
+// need because it includes almost all "standard" wxWidgets headers
 #ifndef WX_PRECOMP
     #include "wx/app.h"
+    #include "wx/log.h"
     #include "wx/frame.h"
+    #include "wx/panel.h"
+
+    #include "wx/timer.h"
+
     #include "wx/utils.h"
     #include "wx/menu.h"
+
     #include "wx/msgdlg.h"
     #include "wx/textdlg.h"
-    #include "wx/listbox.h"
     #include "wx/filedlg.h"
     #include "wx/choicdlg.h"
+
+    #include "wx/button.h"
+    #include "wx/textctrl.h"
+    #include "wx/listbox.h"
+
+    #include "wx/sizer.h"
 #endif
 
 #include "wx/txtstrm.h"
+#include "wx/numdlg.h"
+#include "wx/ffile.h"
 
 #include "wx/process.h"
 
@@ -54,7 +67,7 @@
 #endif // __WINDOWS__
 
 // ----------------------------------------------------------------------------
-// private classes
+// the usual application and main frame classes
 // ----------------------------------------------------------------------------
 
 // Define a new application type, each program should derive a class from wxApp
@@ -72,7 +85,7 @@ public:
 
 // Define an array of process pointers used by MyFrame
 class MyPipedProcess;
-WX_DEFINE_ARRAY(MyPipedProcess *, MyProcessesArray);
+WX_DEFINE_ARRAY_PTR(MyPipedProcess *, MyProcessesArray);
 
 // Define a new frame type: this is going to be our main frame
 class MyFrame : public wxFrame
@@ -94,11 +107,14 @@ public:
     void OnExecWithRedirect(wxCommandEvent& event);
     void OnExecWithPipe(wxCommandEvent& event);
 
+    void OnPOpen(wxCommandEvent& event);
+
     void OnFileExec(wxCommandEvent& event);
 
     void OnAbout(wxCommandEvent& event);
 
     // polling output of async processes
+    void OnTimer(wxTimerEvent& event);
     void OnIdle(wxIdleEvent& event);
 
     // for MyPipedProcess
@@ -112,8 +128,33 @@ private:
 
     void DoAsyncExec(const wxString& cmd);
 
+    void AddAsyncProcess(MyPipedProcess *process)
+    {
+        if ( m_running.IsEmpty() )
+        {
+            // we want to start getting the timer events to ensure that a
+            // steady stream of idle events comes in -- otherwise we
+            // wouldn't be able to poll the child process input
+            m_timerIdleWakeUp.Start(100);
+        }
+        //else: the timer is already running
+
+        m_running.Add(process);
+    }
+
+    void RemoveAsyncProcess(MyPipedProcess *process)
+    {
+        m_running.Remove(process);
+
+        if ( m_running.IsEmpty() )
+        {
+            // we don't need to get idle events all the time any more
+            m_timerIdleWakeUp.Stop();
+        }
+    }
+
     // the PID of the last process we launched asynchronously
-    int m_pidLast;
+    long m_pidLast;
 
     // last command we executed
     wxString m_cmdLast;
@@ -134,10 +175,71 @@ private:
 
     MyProcessesArray m_running;
 
-    // any class wishing to process wxWindows events must use this macro
+    // the idle event wake up timer
+    wxTimer m_timerIdleWakeUp;
+
+    // any class wishing to process wxWidgets events must use this macro
     DECLARE_EVENT_TABLE()
 };
 
+// ----------------------------------------------------------------------------
+// MyPipeFrame: allows the user to communicate with the child process
+// ----------------------------------------------------------------------------
+
+class MyPipeFrame : public wxFrame
+{
+public:
+    MyPipeFrame(wxFrame *parent,
+                const wxString& cmd,
+                wxProcess *process);
+
+protected:
+    void OnTextEnter(wxCommandEvent& WXUNUSED(event)) { DoSend(); }
+    void OnBtnSend(wxCommandEvent& WXUNUSED(event)) { DoSend(); }
+    void OnBtnSendFile(wxCommandEvent& WXUNUSED(event));
+    void OnBtnGet(wxCommandEvent& WXUNUSED(event)) { DoGet(); }
+    void OnBtnClose(wxCommandEvent& WXUNUSED(event)) { DoClose(); }
+
+    void OnClose(wxCloseEvent& event);
+
+    void OnProcessTerm(wxProcessEvent& event);
+
+    void DoSend()
+    {
+        wxString s(m_textOut->GetValue());
+        s += _T('\n');
+        m_out.Write(s.c_str(), s.length());
+        m_textOut->Clear();
+
+        DoGet();
+    }
+
+    void DoGet();
+    void DoClose();
+
+private:
+    void DoGetFromStream(wxTextCtrl *text, wxInputStream& in);
+    void DisableInput();
+    void DisableOutput();
+
+
+    wxProcess *m_process;
+
+    wxOutputStream &m_out;
+    wxInputStream &m_in,
+                  &m_err;
+
+    wxTextCtrl *m_textOut,
+               *m_textIn,
+               *m_textErr;
+
+    DECLARE_EVENT_TABLE()
+};
+
+// ----------------------------------------------------------------------------
+// wxProcess-derived classes
+// ----------------------------------------------------------------------------
+
 // This is the handler for process termination events
 class MyProcess : public wxProcess
 {
@@ -203,21 +305,28 @@ enum
     Exec_SyncExec = 200,
     Exec_AsyncExec,
     Exec_Shell,
+    Exec_POpen,
     Exec_OpenFile,
     Exec_DDEExec,
     Exec_DDERequest,
     Exec_Redirect,
     Exec_Pipe,
-    Exec_About = 300
+    Exec_About = 300,
+
+    // control ids
+    Exec_Btn_Send = 1000,
+    Exec_Btn_SendFile,
+    Exec_Btn_Get,
+    Exec_Btn_Close
 };
 
 static const wxChar *DIALOG_TITLE = _T("Exec sample");
 
 // ----------------------------------------------------------------------------
-// event tables and other macros for wxWindows
+// event tables and other macros for wxWidgets
 // ----------------------------------------------------------------------------
 
-// the event tables connect the wxWindows events with the functions (event
+// the event tables connect the wxWidgets events with the functions (event
 // handlers) which process them. It can be also done at run-time, but for the
 // simple menu events like this the static method is much simpler.
 BEGIN_EVENT_TABLE(MyFrame, wxFrame)
@@ -231,19 +340,36 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
     EVT_MENU(Exec_Redirect, MyFrame::OnExecWithRedirect)
     EVT_MENU(Exec_Pipe, MyFrame::OnExecWithPipe)
 
+    EVT_MENU(Exec_POpen, MyFrame::OnPOpen)
+
     EVT_MENU(Exec_OpenFile, MyFrame::OnFileExec)
 
 #ifdef __WINDOWS__
     EVT_MENU(Exec_DDEExec, MyFrame::OnDDEExec)
     EVT_MENU(Exec_DDERequest, MyFrame::OnDDERequest)
 #endif // __WINDOWS__
-    
+
     EVT_MENU(Exec_About, MyFrame::OnAbout)
 
     EVT_IDLE(MyFrame::OnIdle)
+
+    EVT_TIMER(wxID_ANY, MyFrame::OnTimer)
 END_EVENT_TABLE()
 
-// Create a new application object: this macro will allow wxWindows to create
+BEGIN_EVENT_TABLE(MyPipeFrame, wxFrame)
+    EVT_BUTTON(Exec_Btn_Send, MyPipeFrame::OnBtnSend)
+    EVT_BUTTON(Exec_Btn_SendFile, MyPipeFrame::OnBtnSendFile)
+    EVT_BUTTON(Exec_Btn_Get, MyPipeFrame::OnBtnGet)
+    EVT_BUTTON(Exec_Btn_Close, MyPipeFrame::OnBtnClose)
+
+    EVT_TEXT_ENTER(wxID_ANY, MyPipeFrame::OnTextEnter)
+
+    EVT_CLOSE(MyPipeFrame::OnClose)
+
+    EVT_END_PROCESS(wxID_ANY, MyPipeFrame::OnProcessTerm)
+END_EVENT_TABLE()
+
+// Create a new application object: this macro will allow wxWidgets to create
 // the application object during program execution (it's better than using a
 // static object for many reasons) and also declares the accessor function
 // wxGetApp() which will return the reference of the right type (i.e. MyApp and
@@ -262,26 +388,31 @@ IMPLEMENT_APP(MyApp)
 bool MyApp::OnInit()
 {
     // Create the main application window
-    MyFrame *frame = new MyFrame(_T("Exec wxWindows sample"),
+    MyFrame *frame = new MyFrame(_T("Exec wxWidgets sample"),
                                  wxDefaultPosition, wxSize(500, 140));
 
     // Show it and tell the application that it's our main window
-    frame->Show(TRUE);
+    frame->Show(true);
     SetTopWindow(frame);
 
     // success: wxApp::OnRun() will be called which will enter the main message
-    // loop and the application will run. If we returned FALSE here, the
+    // loop and the application will run. If we returned false here, the
     // application would exit immediately.
-    return TRUE;
+    return true;
 }
 
 // ----------------------------------------------------------------------------
 // main frame
 // ----------------------------------------------------------------------------
 
+#ifdef __VISUALC__
+#pragma warning(disable: 4355) // this used in base member initializer list
+#endif
+
 // frame constructor
 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
-       : wxFrame((wxFrame *)NULL, -1, title, pos, size)
+       : wxFrame((wxFrame *)NULL, wxID_ANY, title, pos, size),
+         m_timerIdleWakeUp(this)
 {
     m_pidLast = 0;
 
@@ -292,7 +423,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 #endif
 
     // create a menu bar
-    wxMenu *menuFile = new wxMenu(_T(""), wxMENU_TEAROFF);
+    wxMenu *menuFile = new wxMenu(wxEmptyString, wxMENU_TEAROFF);
     menuFile->Append(Exec_Kill, _T("&Kill process...\tCtrl-K"),
                      _T("Kill a process by PID"));
     menuFile->AppendSeparator();
@@ -311,8 +442,10 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
     execMenu->AppendSeparator();
     execMenu->Append(Exec_Redirect, _T("Capture command &output...\tCtrl-O"),
                      _T("Launch a program and capture its output"));
-    execMenu->Append(Exec_Pipe, _T("&Pipe through command...\tCtrl-P"),
+    execMenu->Append(Exec_Pipe, _T("&Pipe through command..."),
                      _T("Pipe a string through a filter"));
+    execMenu->Append(Exec_POpen, _T("&Open a pipe to a command...\tCtrl-P"),
+                     _T("Open a pipe to and from another program"));
 
     execMenu->AppendSeparator();
     execMenu->Append(Exec_OpenFile, _T("Open &file...\tCtrl-F"),
@@ -323,7 +456,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
     execMenu->Append(Exec_DDERequest, _T("Send DDE &request...\tCtrl-R"));
 #endif
 
-    wxMenu *helpMenu = new wxMenu(_T(""), wxMENU_TEAROFF);
+    wxMenu *helpMenu = new wxMenu(wxEmptyString, wxMENU_TEAROFF);
     helpMenu->Append(Exec_About, _T("&About...\tF1"), _T("Show about dialog"));
 
     // now append the freshly created menu to the menu bar...
@@ -336,7 +469,7 @@ 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_lbox = new wxListBox(this, -1);
+    m_lbox = new wxListBox(this, wxID_ANY);
     wxFont font(12, wxFONTFAMILY_TELETYPE, wxFONTSTYLE_NORMAL,
                 wxFONTWEIGHT_NORMAL);
     if ( font.Ok() )
@@ -345,7 +478,7 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 #if wxUSE_STATUSBAR
     // create a status bar just for fun (by default with 1 pane only)
     CreateStatusBar();
-    SetStatusText(_T("Welcome to wxWindows exec sample!"));
+    SetStatusText(_T("Welcome to wxWidgets exec sample!"));
 #endif // wxUSE_STATUSBAR
 }
 
@@ -355,8 +488,8 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 
 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 {
-    // TRUE is to force the frame to close
-    Close(TRUE);
+    // true is to force the frame to close
+    Close(true);
 }
 
 void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event))
@@ -366,7 +499,7 @@ void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event))
 
 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 {
-    wxMessageBox(_T("Exec wxWindows Sample\n© 2000-2001 Vadim Zeitlin"),
+    wxMessageBox(_T("Exec wxWidgets Sample\n(c) 2000-2002 Vadim Zeitlin"),
                  _T("About Exec"), wxOK | wxICON_INFORMATION, this);
 }
 
@@ -376,7 +509,8 @@ void MyFrame::OnKill(wxCommandEvent& WXUNUSED(event))
                                    _T("Enter PID:"),
                                    _T("Exec question"),
                                    m_pidLast,
-                                   1, INT_MAX,
+                                   // we need the full unsigned int range
+                                   -INT_MAX, INT_MAX,
                                    this);
     if ( pid == -1 )
     {
@@ -440,16 +574,16 @@ void MyFrame::OnKill(wxCommandEvent& WXUNUSED(event))
     if ( sig == 0 )
     {
         if ( wxProcess::Exists(pid) )
-            wxLogStatus(_T("Process %d is running."), pid);
+            wxLogStatus(_T("Process %ld is running."), pid);
         else
-            wxLogStatus(_T("No process with pid = %d."), pid);
+            wxLogStatus(_T("No process with pid = %ld."), pid);
     }
     else // not SIGNONE
     {
         wxKillError rc = wxProcess::Kill(pid, (wxSignal)sig);
         if ( rc == wxKILL_OK )
         {
-            wxLogStatus(_T("Process %d killed with signal %d."), pid, sig);
+            wxLogStatus(_T("Process %ld killed with signal %d."), pid, sig);
         }
         else
         {
@@ -462,7 +596,7 @@ void MyFrame::OnKill(wxCommandEvent& WXUNUSED(event))
                 _T("unspecified error"),
             };
 
-            wxLogStatus(_T("Failed to kill process %d with signal %d: %s"),
+            wxLogStatus(_T("Failed to kill process %ld with signal %d: %s"),
                         pid, sig, errorText[rc]);
         }
     }
@@ -478,13 +612,14 @@ void MyFrame::DoAsyncExec(const wxString& cmd)
     m_pidLast = wxExecute(cmd, wxEXEC_ASYNC, process);
     if ( !m_pidLast )
     {
-        wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
+        wxLogError( _T("Execution of '%s' failed."), cmd.c_str() );
 
         delete process;
     }
     else
     {
-        wxLogStatus(_T("Process %ld (%s) launched."), m_pidLast, cmd.c_str());
+        wxLogStatus( _T("Process %ld (%s) launched."),
+            m_pidLast, cmd.c_str() );
 
         m_cmdLast = cmd;
     }
@@ -499,12 +634,13 @@ void MyFrame::OnSyncExec(wxCommandEvent& WXUNUSED(event))
     if ( !cmd )
         return;
 
-    wxLogStatus(_T("'%s' is running please wait..."), cmd.c_str());
+    wxLogStatus( _T("'%s' is running please wait..."), cmd.c_str() );
 
     int code = wxExecute(cmd, wxEXEC_SYNC);
 
     wxLogStatus(_T("Process '%s' terminated with exit code %d."),
-                cmd.c_str(), code);
+        cmd.c_str(), code);
+
     m_cmdLast = cmd;
 }
 
@@ -550,11 +686,11 @@ void MyFrame::OnExecWithRedirect(wxCommandEvent& WXUNUSED(event))
                           wxYES_NO | wxCANCEL | wxICON_QUESTION, this) )
     {
         case wxYES:
-            sync = TRUE;
+            sync = true;
             break;
 
         case wxNO:
-            sync = FALSE;
+            sync = false;
             break;
 
         default:
@@ -585,7 +721,7 @@ void MyFrame::OnExecWithRedirect(wxCommandEvent& WXUNUSED(event))
         }
         else
         {
-            m_running.Add(process);
+            AddAsyncProcess(process);
         }
     }
 
@@ -611,12 +747,12 @@ void MyFrame::OnExecWithPipe(wxCommandEvent& WXUNUSED(event))
 
     // always execute the filter asynchronously
     MyPipedProcess2 *process = new MyPipedProcess2(this, cmd, input);
-    int pid = wxExecute(cmd, wxEXEC_ASYNC, process);
+    long pid = wxExecute(cmd, wxEXEC_ASYNC, process);
     if ( pid )
     {
-        wxLogStatus(_T("Process %ld (%s) launched."), pid, cmd.c_str());
+        wxLogStatus( _T("Process %ld (%s) launched."), pid, cmd.c_str() );
 
-        m_running.Add(process);
+        AddAsyncProcess(process);
     }
     else
     {
@@ -628,12 +764,49 @@ void MyFrame::OnExecWithPipe(wxCommandEvent& WXUNUSED(event))
     m_cmdLast = cmd;
 }
 
-void MyFrame::OnFileExec(wxCommandEvent& event)
+void MyFrame::OnPOpen(wxCommandEvent& WXUNUSED(event))
+{
+    wxString cmd = wxGetTextFromUser(_T("Enter the command to launch: "),
+                                     DIALOG_TITLE,
+                                     m_cmdLast);
+    if ( cmd.empty() )
+        return;
+
+    wxProcess *process = wxProcess::Open(cmd);
+    if ( !process )
+    {
+        wxLogError(_T("Failed to launch the command."));
+        return;
+    }
+
+    wxOutputStream *out = process->GetOutputStream();
+    if ( !out )
+    {
+        wxLogError(_T("Failed to connect to child stdin"));
+        return;
+    }
+
+    wxInputStream *in = process->GetInputStream();
+    if ( !in )
+    {
+        wxLogError(_T("Failed to connect to child stdout"));
+        return;
+    }
+
+    new MyPipeFrame(this, cmd, process);
+}
+
+void MyFrame::OnFileExec(wxCommandEvent& WXUNUSED(event))
 {
     static wxString s_filename;
 
-    wxString filename = wxLoadFileSelector(_T("file"), _T(""), s_filename);
-    if ( !filename )
+    wxString filename;
+
+#if wxUSE_FILEDLG
+    filename = wxLoadFileSelector(wxEmptyString, wxEmptyString, s_filename);
+#endif // wxUSE_FILEDLG
+
+    if ( filename.empty() )
         return;
 
     s_filename = filename;
@@ -649,7 +822,7 @@ void MyFrame::OnFileExec(wxCommandEvent& event)
 
     wxString cmd;
     bool ok = ft->GetOpenCommand(&cmd,
-                                 wxFileType::MessageParameters(filename, _T("")));
+                                 wxFileType::MessageParameters(filename));
     delete ft;
     if ( !ok )
     {
@@ -672,23 +845,23 @@ bool MyFrame::GetDDEServer()
     wxString server = wxGetTextFromUser(_T("Server to connect to:"),
                                         DIALOG_TITLE, m_server);
     if ( !server )
-        return FALSE;
+        return false;
 
     m_server = server;
 
     wxString topic = wxGetTextFromUser(_T("DDE topic:"), DIALOG_TITLE, m_topic);
     if ( !topic )
-        return FALSE;
+        return false;
 
     m_topic = topic;
 
     wxString cmd = wxGetTextFromUser(_T("DDE command:"), DIALOG_TITLE, m_cmdDde);
     if ( !cmd )
-        return FALSE;
+        return false;
 
     m_cmdDde = cmd;
 
-    return TRUE;
+    return true;
 }
 
 void MyFrame::OnDDEExec(wxCommandEvent& WXUNUSED(event))
@@ -697,7 +870,7 @@ void MyFrame::OnDDEExec(wxCommandEvent& WXUNUSED(event))
         return;
 
     wxDDEClient client;
-    wxConnectionBase *conn = client.MakeConnection("", m_server, m_topic);
+    wxConnectionBase *conn = client.MakeConnection(wxEmptyString, m_server, m_topic);
     if ( !conn )
     {
         wxLogError(_T("Failed to connect to the DDE server '%s'."),
@@ -723,7 +896,7 @@ void MyFrame::OnDDERequest(wxCommandEvent& WXUNUSED(event))
         return;
 
     wxDDEClient client;
-    wxConnectionBase *conn = client.MakeConnection("", m_server, m_topic);
+    wxConnectionBase *conn = client.MakeConnection(wxEmptyString, m_server, m_topic);
     if ( !conn )
     {
         wxLogError(_T("Failed to connect to the DDE server '%s'."),
@@ -762,9 +935,14 @@ void MyFrame::OnIdle(wxIdleEvent& event)
     }
 }
 
+void MyFrame::OnTimer(wxTimerEvent& WXUNUSED(event))
+{
+    wxWakeUpIdle();
+}
+
 void MyFrame::OnProcessTerminated(MyPipedProcess *process)
 {
-    m_running.Remove(process);
+    RemoveAsyncProcess(process);
 }
 
 
@@ -784,7 +962,8 @@ void MyFrame::ShowOutput(const wxString& cmd,
         m_lbox->Append(output[n]);
     }
 
-    m_lbox->Append(_T("--- End of output ---"));
+    m_lbox->Append(wxString::Format(_T("--- End of %s ---"),
+                                    title.Lower().c_str()));
 }
 
 // ----------------------------------------------------------------------------
@@ -806,12 +985,11 @@ void MyProcess::OnTerminate(int pid, int status)
 
 bool MyPipedProcess::HasInput()
 {
-    bool hasInput = FALSE;
+    bool hasInput = false;
 
-    wxInputStream& is = *GetInputStream();
-    if ( !is.Eof() )
+    if ( IsInputAvailable() )
     {
-        wxTextInputStream tis(is);
+        wxTextInputStream tis(*GetInputStream());
 
         // this assumes that the output is always line buffered
         wxString msg;
@@ -819,13 +997,12 @@ bool MyPipedProcess::HasInput()
 
         m_parent->GetLogListBox()->Append(msg);
 
-        hasInput = TRUE;
+        hasInput = true;
     }
 
-    wxInputStream& es = *GetErrorStream();
-    if ( !es.Eof() )
+    if ( IsErrorAvailable() )
     {
-        wxTextInputStream tis(es);
+        wxTextInputStream tis(*GetErrorStream());
 
         // this assumes that the output is always line buffered
         wxString msg;
@@ -833,7 +1010,7 @@ bool MyPipedProcess::HasInput()
 
         m_parent->GetLogListBox()->Append(msg);
 
-        hasInput = TRUE;
+        hasInput = true;
     }
 
     return hasInput;
@@ -856,7 +1033,7 @@ void MyPipedProcess::OnTerminate(int pid, int status)
 
 bool MyPipedProcess2::HasInput()
 {
-    if ( !!m_input )
+    if ( !m_input.empty() )
     {
         wxTextOutputStream os(*GetOutputStream());
         os.WriteString(m_input);
@@ -865,8 +1042,162 @@ bool MyPipedProcess2::HasInput()
         m_input.clear();
 
         // call us once again - may be we'll have output
-        return TRUE;
+        return true;
     }
 
     return MyPipedProcess::HasInput();
 }
+
+// ============================================================================
+// MyPipeFrame implementation
+// ============================================================================
+
+MyPipeFrame::MyPipeFrame(wxFrame *parent,
+                         const wxString& cmd,
+                         wxProcess *process)
+           : wxFrame(parent, wxID_ANY, cmd),
+             m_process(process),
+             // in a real program we'd check that the streams are !NULL here
+             m_out(*process->GetOutputStream()),
+             m_in(*process->GetInputStream()),
+             m_err(*process->GetErrorStream())
+{
+    m_process->SetNextHandler(this);
+
+    wxPanel *panel = new wxPanel(this, wxID_ANY);
+
+    m_textOut = new wxTextCtrl(panel, wxID_ANY, wxEmptyString,
+                              wxDefaultPosition, wxDefaultSize,
+                              wxTE_PROCESS_ENTER);
+    m_textIn = new wxTextCtrl(panel, wxID_ANY, wxEmptyString,
+                               wxDefaultPosition, wxDefaultSize,
+                               wxTE_MULTILINE | wxTE_RICH);
+    m_textIn->SetEditable(false);
+    m_textErr = new wxTextCtrl(panel, wxID_ANY, wxEmptyString,
+                               wxDefaultPosition, wxDefaultSize,
+                               wxTE_MULTILINE | wxTE_RICH);
+    m_textErr->SetEditable(false);
+
+    wxSizer *sizerTop = new wxBoxSizer(wxVERTICAL);
+    sizerTop->Add(m_textOut, 0, wxGROW | wxALL, 5);
+
+    wxSizer *sizerBtns = new wxBoxSizer(wxHORIZONTAL);
+    sizerBtns->
+        Add(new wxButton(panel, Exec_Btn_Send, _T("&Send")), 0, wxALL, 5);
+    sizerBtns->
+        Add(new wxButton(panel, Exec_Btn_SendFile, _T("&File...")), 0, wxALL, 5);
+    sizerBtns->
+        Add(new wxButton(panel, Exec_Btn_Get, _T("&Get")), 0, wxALL, 5);
+    sizerBtns->
+        Add(new wxButton(panel, Exec_Btn_Close, _T("&Close")), 0, wxALL, 5);
+
+    sizerTop->Add(sizerBtns, 0, wxCENTRE | wxALL, 5);
+    sizerTop->Add(m_textIn, 1, wxGROW | wxALL, 5);
+    sizerTop->Add(m_textErr, 1, wxGROW | wxALL, 5);
+
+    panel->SetSizer(sizerTop);
+    sizerTop->Fit(this);
+
+    Show();
+}
+
+void MyPipeFrame::OnBtnSendFile(wxCommandEvent& WXUNUSED(event))
+{
+#if wxUSE_FILEDLG
+    wxFileDialog filedlg(this, _T("Select file to send"));
+    if ( filedlg.ShowModal() != wxID_OK )
+        return;
+
+    wxFFile file(filedlg.GetFilename(), _T("r"));
+    wxString data;
+    if ( !file.IsOpened() || !file.ReadAll(&data) )
+        return;
+
+    // can't write the entire string at once, this risk overflowing the pipe
+    // and we would dead lock
+    size_t len = data.length();
+    const wxChar *pc = data.c_str();
+    while ( len )
+    {
+        const size_t CHUNK_SIZE = 4096;
+        m_out.Write(pc, len > CHUNK_SIZE ? CHUNK_SIZE : len);
+
+        // note that not all data could have been written as we don't block on
+        // the write end of the pipe
+        const size_t lenChunk = m_out.LastWrite();
+
+        pc += lenChunk;
+        len -= lenChunk;
+
+        DoGet();
+    }
+#endif // wxUSE_FILEDLG
+}
+
+void MyPipeFrame::DoGet()
+{
+    // we don't have any way to be notified when any input appears on the
+    // stream so we have to poll it :-(
+    DoGetFromStream(m_textIn, m_in);
+    DoGetFromStream(m_textErr, m_err);
+}
+
+void MyPipeFrame::DoGetFromStream(wxTextCtrl *text, wxInputStream& in)
+{
+    while ( in.CanRead() )
+    {
+        wxChar buffer[4096];
+        buffer[in.Read(buffer, WXSIZEOF(buffer) - 1).LastRead()] = _T('\0');
+
+        text->AppendText(buffer);
+    }
+}
+
+void MyPipeFrame::DoClose()
+{
+    m_process->CloseOutput();
+
+    DisableInput();
+}
+
+void MyPipeFrame::DisableInput()
+{
+    m_textOut->SetEditable(false);
+    FindWindow(Exec_Btn_Send)->Disable();
+    FindWindow(Exec_Btn_SendFile)->Disable();
+    FindWindow(Exec_Btn_Close)->Disable();
+}
+
+void MyPipeFrame::DisableOutput()
+{
+    FindWindow(Exec_Btn_Get)->Disable();
+}
+
+void MyPipeFrame::OnClose(wxCloseEvent& event)
+{
+    if ( m_process )
+    {
+        // we're not interested in getting the process termination notification
+        // if we are closing it ourselves
+        wxProcess *process = m_process;
+        m_process = NULL;
+        process->SetNextHandler(NULL);
+
+        process->CloseOutput();
+    }
+
+    event.Skip();
+}
+
+void MyPipeFrame::OnProcessTerm(wxProcessEvent& WXUNUSED(event))
+{
+    DoGet();
+
+    delete m_process;
+    m_process = NULL;
+
+    wxLogWarning(_T("The other process has terminated, closing"));
+
+    DisableInput();
+    DisableOutput();
+}