docs: def dragMoveEvent( self, event ):
          """
          Processes the drag drop event using the filter set by the \
          setDragDropFilter
          
          :param      event | <QDragEvent>
          """
          filt = self.dragDropFilter()
          if ( not filt ):
              super(XCalendarWidget, self).dragMoveEvent(event)
              return
          
          filt(self, event)