IIdentifyDialog的用法

<P>我想实现查询功能,想用IIdentifyDialog的  AddLayerIdentifyPoint函数,可总是不行,应怎么用?大家能给个例子吗?</P>
<P>   dlg.Map = activeView.FocusMap;<BR>   dlg.AddLayerIdentifyPoint(activeView.FocusMap.ActiveGraphicsLayer,.X,Y));</P>
<P>下面是我用IIdentify接口做的,但效果差远了</P>
<P>private IHookHelper m_HookHelper = new HookHelperClass();<BR>  private IIdentifyDialog dlg = new IdentifyDialogClass();<BR>  IFeatureIdentifyObj featIdObj;<BR>  IIdentifyObj idObj;<BR>  IMap map;<BR>  IIdentify identify;<BR>  IPoint point;<BR>  IArray idArray;  </P>
<P>public override void OnMouseDown(int Button, int Shift, int X, int Y)<BR>  {<BR>   base.OnMouseDown (Button, Shift, X, Y);<BR>   <BR>   //Get the active view<BR>   IActiveView activeView = m_HookHelper.ActiveView;<BR>   map = activeView.FocusMap;<BR>   identify = map.get_Layer(0) as IIdentify;<BR>   point = activeView.ScreenDisplay.DisplayTransformation.ToMapPoint(X, Y);<BR>   idArray = identify.Identify(point);</P>
<P>   if (idArray != null)<BR>   {<BR>    featIdObj = idArray.get_Element(0) as IFeatureIdentifyObj;<BR>    idObj = featIdObj as IIdentifyObj;<BR>    idObj.Flash(activeView.ScreenDisplay);<BR>    MessageBox.Show("Layer: " + idObj.Layer.Name + "\n" + "Feature: " + idObj.Name);<BR>   }<BR>  }</P>

<P>要什么效果?</P>
<P>和空间查询的原理是一样的</P>

<P>就是象ArcGIS中的那种效果,用IdentifyDialog显示所有属性,我那个方法只能显示部分属性</P>
<P>我不太会用IdentifyDialog,不知点图形的时候,怎么在IdentifyDialog中把相应的信息显示出来,我用AddLayerIdentifyPoint函数,但是没反应,不知问题出在哪儿?</P>
<P>dlg.AddLayerIdentifyPoint(activeView.FocusMap.ActiveGraphicsLayer,X,Y));</P>

我用了上面的代码为什么获取不到点、线要素呢？每次都是idArray = null，各位多执教啊！

<P>呵呵,回答得晚了点,下面的例子用了AddLayerIdentifyOID来添加</P>
<P>Dim pMap As IMap <BR>Dim pContentsView As IContentsView <BR>Dim pfeaturel As IFeatureLayer <BR>Dim pEnumLayer As IEnumLayer <BR>Dim pLayer As ILayer <BR>Dim pIdentifyDialog As IIdentifyDialog <BR>Dim pIdentifyDialogProps As IIdentifyDialogProps <BR><BR><BR>Set PMXDoc = m_pApp.Document <BR>Set pMap = PMXDoc.FocusMap <BR>Set PActiveView = PMXDoc.FocusMap <BR>'Create a new IdentifyDialog and associate it <BR>'with the focus map and the map's display <BR>Set pIdentifyDialog = New IdentifyDialog <BR>Set pIdentifyDialogProps = pIdentifyDialog 'QI <BR>Set pIdentifyDialog.Map = PMXDoc.FocusMap <BR>Set pIdentifyDialog.Display = PActiveView.ScreenDisplay <BR><BR>'Clear the dialog on each mouse click <BR>pIdentifyDialog.ClearLayers <BR><BR>'Clear all the selectable layers <BR>Set pEnumLayer = pMap.Layers <BR>Set pLayer = pEnumLayer.Next <BR>Do Until pLayer Is Nothing <BR>If TypeOf pLayer Is IFeatureLayer Then <BR>Set pfeaturel = pLayer <BR>Dim pfeatureselect As IFeatureSelection <BR>Set pfeatureselect = pfeaturel <BR>Dim pselected As ISelectionSet <BR>Set pselected = pfeatureselect.SelectionSet <BR>Dim pCuros As ICursor <BR>pselected.Search Nothing, True, pCuros <BR><BR>Dim pfeature As IFeature <BR>Set pfeature = pCuros.NextRow <BR>Do Until pfeature Is Nothing <BR>pIdentifyDialog.AddLayerIdentifyOID pLayer, pfeature.OID <BR><BR><BR>Set pfeature = pCuros.NextRow <BR>Loop <BR><BR>End If <BR>Set pLayer = pEnumLayer.Next <BR>Loop <BR>pIdentifyDialog.Show <BR><BR></P>

总统总是热心的啊！！！