Sets whether or not the buttons should respond to defaulting options
        when the user is interacting with it.
        
        :param      state | <bool>

def setAutoDefault(self, state):
        """
        Sets whether or not the buttons should respond to defaulting options
        when the user is interacting with it.
        
        :param      state | <bool>
        """
        self._autoDefault = state
        for button in self.buttonBox().buttons():
            button.setAutoDefault(state)
            button.setDefault(state)