[求助]………………

<P>现在有一幅图形，在程序中（VB+AO）给一个过滤条件得到一部分记录，我想高亮显示得到的这部分记录或者是以不一样的颜色显示或渲染。各位给些建议或是接口方法，程序代码更受欢迎啊<IMG border=0 src="http://www.gissky.net/bbs/images/Emotions/6.gif"> </P>
<P>现在能做到的是这样子：</P>
<P>

 </P>

<P>        Dim ipTopologicalOperator As ITopologicalOperator
        Dim ipPolygon As IPolygon
        Dim ipGeometryCollection As IGeometryCollection
        ipGeometryCollection = New GeometryBag</P><P>        Dim ipFeature As IFeature
        Dim ipPolyonFeature As IFeature</P><P>        Do While Not ipFeature Is Nothing
            ipTopologicalOperator = ipFeature.Shape
            ipPolygon = ipTopologicalOperator.Buffer(1.5)
            ipGeometryCollection.AddGeometry(ipPolygon)
            ipFeature = ipFeatureCorsor.NextFeature
        Loop</P><P>        Dim ipBufferPolygon As IPolygon
        ipBufferPolygon = New PolygonClass
        ipTopologicalOperator = ipBufferPolygon
        Dim ipEnumGeometry As IEnumGeometry
        ipEnumGeometry = ipGeometryCollection
        ipTopologicalOperator.ConstructUnion(ipEnumGeometry)
        Dim ipBufferEnvlop As IEnvelope
        ipBufferEnvlop = ipBufferPolygon.Envelope</P><P>        AxMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewGeography, Nothing, ipBufferEnvlop.Envelope)</P><P>楼上的看一下为什么这段代码运行后看不见缓冲区</P><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" /><img src="images/post/smile/dvbbs/em02.gif" />

Private Sub UIButtonControl3_Click()
Dim pMxApp As IMxApplication
Set pMxApp = Application
Dim pMxDoc As IMxDocument
Set pMxDoc = Application.Document

Dim pLayer As ILayer
Set pLayer = pMxDoc.SelectedLayer

Dim pRGBColorA As IRgbColor
Set pRGBColorA = New RgbColor
pRGBColorA.Red = 255

Dim pFLayer As IFeatureLayer
Set pFLayer = pLayer

Dim pQFilter As IQueryFilter
Set pQFilter = New QueryFilter
pQFilter.WhereClause = "LEIXING = '水田'"
'我的条件，可以根据自己需要定义

Dim pFeatSelection As IFeatureSelection
Set pFeatSelection = pLayer
pFeatSelection.SelectFeatures pQFilter, esriSelectionResultNew, False
pFeatSelection.SelectionChanged
Set pFeatSelection.SelectionColor = pRGBColorA

pMxDoc.ActiveView.Refresh
End Sub

<P>用什么方法或接口？？</P><P>请赐教啊！</P>

改变被选择到的数据集的颜色就ok了