code: def helpEvent( self, event ):
          
          item  = self.itemAt(event.scenePos())
          if ( item and item and item.toolTip() ):
              parent = self.parent()
              rect   = item.path().boundingRect()
              point  = event.scenePos()
              point.setY(item.pos().y() + rect.bottom())
              
              point  = parent.mapFromScene(point)
              point  = parent.mapToGlobal(point)
              
              XPopupWidget.showToolTip(item.toolTip(),
                                       point = point,
                                       parent = parent)
              event.accept()
          else:
              super(XCalendarScene, self).helpEvent(event)
docs: Displays a tool tip for the given help event.
          
          :param      event | <QHelpEvent>