def mute_cb(self, action):
        # action has not toggled yet
        text = ('muted', 'not muted')[action.get_active()==False]
        self.mutelabel.set_text('Sound is %s' % text)
        return
dataset/ETHPy150Open anandology/pyjamas/pygtkweb/demos/062-uimanager.py/UIManagerExample.mute_cb/original