【winform】ListBox如何给item项添加hover

1、绑定move事件

  listBox1.MouseMove += new MouseEventHandler(listBox_MouseMove);

2、编写代码

  private void listBox_MouseMove(object? sender, MouseEventArgs e)
  {
      ListBox? listBox = sender as ListBox;
      //获取鼠标在ListBox中的位置
      int newIndex = listBox.IndexFromPoint(e.X, e.Y);
      if (newIndex != ListBox.NoMatches && newIndex != -1)
      {
          if (oldIndex != newIndex)
          {
              ControlUtils.ListBoxItemHover(sender,false, oldIndex, newIndex, Color.FromArgb(31, 31, 31), Color.White, Color.FromArgb(55, 55, 61), Color.White);
              oldIndex = newIndex;
          }

          // 设置ToolTip显示的文本
          lbToolTip.SetToolTip(listBox, listBox.Items[newIndex].ToString());
      }
  }

3、查看效果