A little tweak to the wxProcess demo to make it run more smoothly

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_2_BRANCH@8645 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

wxPython/demo/wxProcess.py

@@ -62,6 +62,7 @@ class TestPanel(wxPanel):
         if self.process is not None:
             self.process.Detach()
             self.process.CloseOutput()
+            self.process = None
 
 
     def OnExecuteBtn(self, evt):
@@ -85,6 +86,7 @@ class TestPanel(wxPanel):
         self.inp.SetValue('')
         self.log.write('OnSendText: "%s"\n' % text)
         self.process.GetOutputStream().write(text + '\n')
+        self.inp.SetFocus()
 
 
     def OnCloseStream(self, evt):