def cb():
     dlg = MessageDialog(self, MessageDialog.Type.Warning, "Title",
                         "This is a question message", "Yes", "No",
                         True)
     dlg.setCallback(cb2)
 def cb():
     dlg = MessageDialog(self, MessageDialog.Type.Information, "Title",
                         "This is an information message")
     dlg.setCallback(cb2)
 def cb():
     dlg = MessageDialog(self, MessageDialog.Type.Warning, "Title",
                         "This is a warning message")
     dlg.setCallback(cb2)