Modifies the minimum width to factor in the size of the pixmaps and the
        number for the maximum.

def adjustMinimumWidth( self ):
        """
        Modifies the minimum width to factor in the size of the pixmaps and the
        number for the maximum.
        """
        pw = self.pixmapSize().width()
        
        # allow 1 pixel space between the icons
        self.setMinimumWidth(pw * self.maximum() + 3 * self.maximum())