使SWT的Table根据TableItem显示Tooltip

默认情况下,SWT的Table只会给整个Table设置Tooltip,要对每一个TableItem设置Tooltip的话,就要监听鼠标事件了:

table.addMouseTrackListener(new MouseTrackAdapter() {
      public void mouseHover(MouseEvent event) {
          Point pt = new Point(event.x, event.y);
          int index = table.getTopIndex();
          while (index < table.getItemCount()) {
              TableItem item = table.getItem(index);
              for (int i = 0; i < table.getColumnCount(); i++) {
                  Rectangle rect = item.getBounds(i);
                  if (rect.contains(pt)) {
                      Object object= item.getData();
                      ........
                  }
              }
              index++;
          }
      }
  });

在省略号的地方就可以对对象进行转型了