def show(self, containers=None):
txtmarshal = TextGrab()
txtmarshal.register(self.get_char)
if containers:
self.add(containers)
else:
self.add(self._containers)
self._button.show()
def close(self):
txtmarshal = TextGrab()
txtmarshal.deregister()
self._button.kill()
self.kill()