这篇文章主要介绍了DevExpress实现自定义TreeListNode的Tooltip的方法,需要的朋友可以参考下
本文实例展示了DevExpress实现自定义TreeListNode的Tooltip的方法，具体方法如下所示：
主要功能代码如下：

1. /// <summary>
   
2. /// 为节点提供Tooltip
   
3. /// 说明：
   
4. /// 1.设置tree.ToolTipController属性
   
5. /// 2.ToolTipController的GetActiveObjectInfo事件中使用
   
6. /// 3.举例
   
7. /// tlLHData.CustomNodeTooltip(e, node =>
   
8. ///{
   
9. /// string _cabId = node.GetKeyID();
   
10. /// CCabInfo _cabinfo = LHDBHelper.GetCabInfo(_cabId);
    
11. /// if (_cabinfo != null)
    
12. /// {
    
13. /// return string.Format("核对时间:{0}\r\n在线情况:{1}\r\n最后一次活跃时间:{2}\r\n",
    
14. /// _cabinfo.ChkDataTime,
    
15. /// _cabinfo.CtuOnlineStatus == 1 ? "在线" : "未上线",
    
16. /// _cabinfo.LastAliveTime);
    
17. /// }
    
18. /// return string.Empty;
    
19. ///});
    
20. /// </summary>
    
21. /// <param name="tree">TreeList</param>
    
22. /// <param name="e">ToolTipControllerGetActiveObjectInfoEventArgs</param>
    
23. /// <param name="builderNodeTooltipHandler">委托</param>
    
24. public static void CustomNodeTooltip(this TreeList tree, ToolTipControllerGetActiveObjectInfoEventArgs e, Func<TreeListNode, string> builderNodeTooltipHandler)
    
25. {
    
26. if (e.SelectedControl is DevExpress.XtraTreeList.TreeList)
    
27. {
    
28. TreeList _tree = (TreeList)e.SelectedControl;
    
29. TreeListHitInfo _hit = _tree.CalcHitInfo(e.ControlMousePosition);
    
30. if (_hit.HitInfoType == HitInfoType.Cell)
    
31. {
    
32. TreeListViewInfo _viewInfo = _tree.ViewInfo;
    
33. RowInfo _rowInfo = _viewInfo.GetRowInfoByPoint(e.ControlMousePosition);
    
34. CellInfo _cellInfo = _rowInfo.Cells[_hit.Column.VisibleIndex] as CellInfo;
    
35. EditHitInfo _editHitInfo = _cellInfo.EditorViewInfo.CalcHitInfo(e.ControlMousePosition);
    
36. if (_editHitInfo.HitTest == EditHitTest.MaskBox)
    
37. {
    
38. string _toolTip = builderNodeTooltipHandler(_hit.Node);
    
39. if (!string.IsNullOrEmpty(_toolTip))
    
40. e.Info = new ToolTipControlInfo(_cellInfo, _toolTip);
    
41. }
    
42. }
    
43. }
    
44. }

复制代码

代码运行效果如下：

这篇文章主要介绍了DevExpress实现自定义TreeListNode的Tooltip的方法,需要的朋友可以参考下
本文实例展示了DevExpress实现自定义TreeListNode的Tooltip的方法，具体方法如下所示：
主要功能代码如下：

1. /// <summary>
   
2. /// 为节点提供Tooltip
   
3. /// 说明：
   
4. /// 1.设置tree.ToolTipController属性
   
5. /// 2.ToolTipController的GetActiveObjectInfo事件中使用
   
6. /// 3.举例
   
7. /// tlLHData.CustomNodeTooltip(e, node =>
   
8. ///{
   
9. /// string _cabId = node.GetKeyID();
   
10. /// CCabInfo _cabinfo = LHDBHelper.GetCabInfo(_cabId);
    
11. /// if (_cabinfo != null)
    
12. /// {
    
13. /// return string.Format("核对时间:{0}\r\n在线情况:{1}\r\n最后一次活跃时间:{2}\r\n",
    
14. /// _cabinfo.ChkDataTime,
    
15. /// _cabinfo.CtuOnlineStatus == 1 ? "在线" : "未上线",
    
16. /// _cabinfo.LastAliveTime);
    
17. /// }
    
18. /// return string.Empty;
    
19. ///});
    
20. /// </summary>
    
21. /// <param name="tree">TreeList</param>
    
22. /// <param name="e">ToolTipControllerGetActiveObjectInfoEventArgs</param>
    
23. /// <param name="builderNodeTooltipHandler">委托</param>
    
24. public static void CustomNodeTooltip(this TreeList tree, ToolTipControllerGetActiveObjectInfoEventArgs e, Func<TreeListNode, string> builderNodeTooltipHandler)
    
25. {
    
26. if (e.SelectedControl is DevExpress.XtraTreeList.TreeList)
    
27. {
    
28. TreeList _tree = (TreeList)e.SelectedControl;
    
29. TreeListHitInfo _hit = _tree.CalcHitInfo(e.ControlMousePosition);
    
30. if (_hit.HitInfoType == HitInfoType.Cell)
    
31. {
    
32. TreeListViewInfo _viewInfo = _tree.ViewInfo;
    
33. RowInfo _rowInfo = _viewInfo.GetRowInfoByPoint(e.ControlMousePosition);
    
34. CellInfo _cellInfo = _rowInfo.Cells[_hit.Column.VisibleIndex] as CellInfo;
    
35. EditHitInfo _editHitInfo = _cellInfo.EditorViewInfo.CalcHitInfo(e.ControlMousePosition);
    
36. if (_editHitInfo.HitTest == EditHitTest.MaskBox)
    
37. {
    
38. string _toolTip = builderNodeTooltipHandler(_hit.Node);
    
39. if (!string.IsNullOrEmpty(_toolTip))
    
40. e.Info = new ToolTipControlInfo(_cellInfo, _toolTip);
    
41. }
    
42. }
    
43. }
    
44. }

复制代码

代码运行效果如下：