地图如何高亮度显示

根据图层中的某个属性实现对空间位置的查询，通过在世界地图中根据国家名称字段来查找国家所对应的位置，一旦查找到该国家，地图将其高亮度显示出来。

这个代码如何实现啊？我用的是AO开发！
急啊！！



Public g_pActiveView As esriCarto.IActiveView

Public g_pMap As esriCarto.IMap



If Not pFeature Is Nothing Then

          '求实现的代码

End If

Public Sub HighLight()
    Dim pMxDoc As IMxDocument
    Dim pDisplay As IDisplay
    Dim pApp1 As IMxApplication
    Dim pMap As IMap
    
    Dim Tvw As TreeView
    
    Set pMxDoc = ThisDocument
    Set pMap = pMxDoc.FocusMap
  
    Dim pFeature As IFeature
    Dim pIdentify As IIdentify
    Dim pFeatureIdentifyObj As IFeatureIdentifyObj
    Dim pArray As IArray
    Dim pIdentifyObj As IIdentifyObj
    Dim pGeometry As IGeometry
    Dim pLayer As ILayer
    
    'begin获取图层和图元
    Dim OID As String
    Dim str_LayerName As String
    Set Tvw = frm_ShuXing.trw_Features
    If Not Tvw.SelectedItem.Parent Is Nothing Then
        str_LayerName = Tvw.SelectedItem.Parent.Text
        OID = Left(Tvw.SelectedItem.key, (Len(Tvw.SelectedItem.key) _
              - Len(Tvw.SelectedItem.Parent.key)))
        Set pFeature = GetFeatureName(OID, str_LayerName)
        
        Dim lyrCount As Integer
'        For lyrCount = 0 To pMap.LayerCount - 1
            Set pLayer = GetLayer(str_LayerName)
'            If pLayer.name = str_LayerName Then
'                Exit For
'            End If
'        Next
    Else
        Exit Sub
    End If
    'end获取图层和图元
    
    Set pIdentify = pLayer
    Set pGeometry = pFeature.Shape
    Set pArray = pIdentify.Identify(pGeometry)
    
    If pArray Is Nothing Then Exit Sub  '如果pArray为空则跳出
    
    Set pFeatureIdentifyObj = pArray.Element(0)
    Set pIdentifyObj = pFeatureIdentifyObj
    
    If pIdentifyObj Is Nothing Then Exit Sub    '如果pIdentifyObj为空则跳出
    
    pIdentifyObj.Flash pMxDoc.ActiveView.ScreenDisplay
End Sub

给你方法：让它选中后闪烁，或是让它显示为选中后的状态！就像在ArcMap中用选中工具选中时那样。

自己顶一下