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[wxWidgets.git] / samples / exec / exec.cpp

diff --git a/samples/exec/exec.cpp b/samples/exec/exec.cpp
index 80f4f4335d938ced49c1bab13b28763a98cc3845..50c351e463896676c6ef1601c061126fc70e42e6 100644 (file)
--- a/samples/exec/exec.cpp
+++ b/samples/exec/exec.cpp
@@ -40,6 +40,7 @@
     #include "wx/textdlg.h"
     #include "wx/listbox.h"
     #include "wx/filedlg.h"
+    #include "wx/choicdlg.h"
 #endif
 
 #include "wx/txtstrm.h"
@@ -83,6 +84,8 @@ public:
     // event handlers (these functions should _not_ be virtual)
     void OnQuit(wxCommandEvent& event);
 
+    void OnKill(wxCommandEvent& event);
+
     void OnClear(wxCommandEvent& event);
 
     void OnSyncExec(wxCommandEvent& event);
@@ -109,6 +112,9 @@ private:
 
     void DoAsyncExec(const wxString& cmd);
 
+    // the PID of the last process we launched asynchronously
+    int m_pidLast;
+
     // last command we executed
     wxString m_cmdLast;
 
@@ -192,6 +198,7 @@ enum
 {
     // menu items
     Exec_Quit = 100,
+    Exec_Kill,
     Exec_ClearLog,
     Exec_SyncExec = 200,
     Exec_AsyncExec,
@@ -215,6 +222,7 @@ 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_Kill,  MyFrame::OnKill)
     EVT_MENU(Exec_ClearLog,  MyFrame::OnClear)
 
     EVT_MENU(Exec_SyncExec, MyFrame::OnSyncExec)
@@ -225,9 +233,11 @@ BEGIN_EVENT_TABLE(MyFrame, wxFrame)
 
     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)
@@ -273,6 +283,8 @@ bool MyApp::OnInit()
 MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
        : wxFrame((wxFrame *)NULL, -1, title, pos, size)
 {
+    m_pidLast = 0;
+
 #ifdef __WXMAC__
     // we need this in order to allow the about menu relocation, since ABOUT is
     // not the default id of the about menu
@@ -281,6 +293,9 @@ 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_Kill, _T("&Kill process...\tCtrl-K"),
+                     _T("Kill a process by PID"));
+    menuFile->AppendSeparator();
     menuFile->Append(Exec_ClearLog, _T("&Clear log\tCtrl-C"),
                      _T("Clear the log window"));
     menuFile->AppendSeparator();
@@ -334,8 +349,9 @@ MyFrame::MyFrame(const wxString& title, const wxPoint& pos, const wxSize& size)
 #endif // wxUSE_STATUSBAR
 }
 
-
-// event handlers
+// ----------------------------------------------------------------------------
+// event handlers: file and help menu
+// ----------------------------------------------------------------------------
 
 void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
 {
@@ -350,15 +366,117 @@ void MyFrame::OnClear(wxCommandEvent& WXUNUSED(event))
 
 void MyFrame::OnAbout(wxCommandEvent& WXUNUSED(event))
 {
-    wxMessageBox(_T("Exec sample\n© 2000 Vadim Zeitlin"),
+    wxMessageBox(_T("Exec wxWindows Sample\n© 2000-2001 Vadim Zeitlin"),
                  _T("About Exec"), wxOK | wxICON_INFORMATION, this);
 }
 
+void MyFrame::OnKill(wxCommandEvent& WXUNUSED(event))
+{
+    long pid = wxGetNumberFromUser(_T("Please specify the process to kill"),
+                                   _T("Enter PID:"),
+                                   _T("Exec question"),
+                                   m_pidLast,
+                                   1, INT_MAX,
+                                   this);
+    if ( pid == -1 )
+    {
+        // cancelled
+        return;
+    }
+
+    static const wxString signalNames[] =
+    {
+        _T("Just test (SIGNONE)"),
+        _T("Hangup (SIGHUP)"),
+        _T("Interrupt (SIGINT)"),
+        _T("Quit (SIGQUIT)"),
+        _T("Illegal instruction (SIGILL)"),
+        _T("Trap (SIGTRAP)"),
+        _T("Abort (SIGABRT)"),
+        _T("Emulated trap (SIGEMT)"),
+        _T("FP exception (SIGFPE)"),
+        _T("Kill (SIGKILL)"),
+        _T("Bus (SIGBUS)"),
+        _T("Segment violation (SIGSEGV)"),
+        _T("System (SIGSYS)"),
+        _T("Broken pipe (SIGPIPE)"),
+        _T("Alarm (SIGALRM)"),
+        _T("Terminate (SIGTERM)"),
+    };
+
+    int sig = wxGetSingleChoiceIndex(_T("How to kill the process?"),
+                                     _T("Exec question"),
+                                     WXSIZEOF(signalNames), signalNames,
+                                     this);
+    switch ( sig )
+    {
+        default:
+            wxFAIL_MSG( _T("unexpected return value") );
+            // fall through
+
+        case -1:
+            // cancelled
+            return;
+
+        case wxSIGNONE:
+        case wxSIGHUP:
+        case wxSIGINT:
+        case wxSIGQUIT:
+        case wxSIGILL:
+        case wxSIGTRAP:
+        case wxSIGABRT:
+        case wxSIGEMT:
+        case wxSIGFPE:
+        case wxSIGKILL:
+        case wxSIGBUS:
+        case wxSIGSEGV:
+        case wxSIGSYS:
+        case wxSIGPIPE:
+        case wxSIGALRM:
+        case wxSIGTERM:
+            break;
+    }
+
+    if ( sig == 0 )
+    {
+        if ( wxProcess::Exists(pid) )
+            wxLogStatus(_T("Process %d is running."), pid);
+        else
+            wxLogStatus(_T("No process with pid = %d."), 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);
+        }
+        else
+        {
+            static const wxChar *errorText[] =
+            {
+                _T(""), // no error
+                _T("signal not supported"),
+                _T("permission denied"),
+                _T("no such process"),
+                _T("unspecified error"),
+            };
+
+            wxLogStatus(_T("Failed to kill process %d with signal %d: %s"),
+                        pid, sig, errorText[rc]);
+        }
+    }
+}
+
+// ----------------------------------------------------------------------------
+// event handlers: exec menu
+// ----------------------------------------------------------------------------
+
 void MyFrame::DoAsyncExec(const wxString& cmd)
 {
     wxProcess *process = new MyProcess(this, cmd);
-    long pid = wxExecute(cmd, FALSE /* async */, process);
-    if ( !pid )
+    m_pidLast = wxExecute(cmd, FALSE /* async */, process);
+    if ( !m_pidLast )
     {
         wxLogError(_T("Execution of '%s' failed."), cmd.c_str());
 
@@ -366,7 +484,7 @@ void MyFrame::DoAsyncExec(const wxString& cmd)
     }
     else
     {
-        wxLogStatus(_T("Process %ld (%s) launched."), pid, cmd.c_str());
+        wxLogStatus(_T("Process %ld (%s) launched."), m_pidLast, cmd.c_str());
 
         m_cmdLast = cmd;
     }
@@ -543,6 +661,10 @@ void MyFrame::OnFileExec(wxCommandEvent& event)
     DoAsyncExec(cmd);
 }
 
+// ----------------------------------------------------------------------------
+// DDE stuff
+// ----------------------------------------------------------------------------
+
 #ifdef __WINDOWS__
 
 bool MyFrame::GetDDEServer()
@@ -623,6 +745,10 @@ void MyFrame::OnDDERequest(wxCommandEvent& WXUNUSED(event))
 
 #endif // __WINDOWS__
 
+// ----------------------------------------------------------------------------
+// various helpers
+// ----------------------------------------------------------------------------
+
 // input polling
 void MyFrame::OnIdle(wxIdleEvent& event)
 {