Sets the fixed height for this bar to the inputed height.

        :param      height | <int>

def setFixedHeight(self, height):
        """
        Sets the fixed height for this bar to the inputed height.

        :param      height | <int>
        """
        super(XViewPanelBar, self).setFixedHeight(height)

        # update the layout
        if self.layout():
            for i in xrange(self.layout().count()):
                try:
                    self.layout().itemAt(i).widget().setFixedHeight(height)
                except StandardError:
                    continue