docs: public boolean handleEvent(Event e) {
  
          switch (e.id) {
  
              case Event.SCROLL_LINE_UP :
              case Event.SCROLL_LINE_DOWN :
              case Event.SCROLL_PAGE_UP :
              case Event.SCROLL_PAGE_DOWN :
              case Event.SCROLL_ABSOLUTE :
                  iX = sbHoriz.getValue();
                  iY = iRowHeight * sbVert.getValue();
  
                  repaint();
  
                  return true;
          }
  
          return super.handleEvent(e);
      }