def _update_value_only ( self, event ):
        self._no_update = True
        self.value      = event.GetString()
        self._no_update = False
Unregister an e-mail hook.
dataset/ETHPy150Open enthought/traitsui/traitsui/wx/history_control.py/HistoryControl._update_value_only--crossover with--dataset/ETHPy150Open reviewboard/reviewboard/reviewboard/notifications/email.py/unregister_email_hook