利用 IIdentifyDialog 模拟ArcMap工具里面 Identify功能进行要素查询

利用AE提供的IIdentifyDialog,创建class identifyTool 。然后在程序里面就可以在鼠标点击按钮功能下,模拟实现ArcMap工具里面 Identify功能
类生成代码如下:

 1 public sealed class identifyTool : BaseTool
 2    {
 3        IHookHelper pHookHelper = new HookHelperClass();
 4        public identifyTool()
 5        {
 6            m_cursor = new System.Windows.Forms.Cursor(@"..\..\Resources\Identify_md.cur");
 7
 8        }

 9
10        public override void OnCreate(object hook)
11        {
12            pHookHelper.Hook = hook;
13        }

14        public override void OnMouseDown(int Button, int Shift, int X, int Y)
15        {
16
17            IActiveView pActiveView;
18            IIdentifyDialog pIdentifyDialog;
19            IIdentifyDialogProps pIdentifyDialogProps;
20            IEnumLayer pEnumLayer;
21            ILayer pLayer;
22
23            pActiveView = pHookHelper.ActiveView;
24
25            pIdentifyDialog = new IdentifyDialogClass();
26            pIdentifyDialogProps = pIdentifyDialog as IIdentifyDialogProps;
27            pIdentifyDialog.Map = pHookHelper.ActiveView.FocusMap;
28            pIdentifyDialog.Display = pActiveView.ScreenDisplay;
29
30            pIdentifyDialog.ClearLayers();
31
32            pEnumLayer = pIdentifyDialogProps.Layers;
33            pEnumLayer.Reset();
34            pLayer = pEnumLayer.Next();
35            while (pLayer != null)
36            {
37                pIdentifyDialog.AddLayerIdentifyPoint(pLayer, X, Y);
38                pLayer = pEnumLayer.Next();
39            }

40            pIdentifyDialog.Show();
41        }

42    }

其中m_cursor用来设置鼠标样式。
IIdentifyDialog要设置其Map和Display属性。
(参考ESRI中国社区)

posted on 2008-05-31 14:43  duckweeds  阅读(1188)  评论(0编辑  收藏  举报

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