Assigns the font to this widget and all of its children.

        :param      font | <QtGui.QFont>

def setFont(self, font):
        """
        Assigns the font to this widget and all of its children.

        :param      font | <QtGui.QFont>
        """
        super(XTimeEdit, self).setFont(font)

        # update the fonts for the time combos
        self._hourCombo.setFont(font)
        self._minuteCombo.setFont(font)
        self._secondCombo.setFont(font)
        self._timeOfDayCombo.setFont(font)