def on_menu_exit(self, event):
        """
        Exit the GUI
        """
        # also delete appropriate copy file
        try:
            self.help_window.Destroy()
        except:
            pass
        if '-i' in sys.argv:
            self.Destroy()
        try:
            sys.exit() # can raise TypeError if wx inspector was used
        except Exception as ex:
            if isinstance(ex, TypeError):
                pass
            else:
                raise ex