mapobject 与 VC++

<P>  Dim a As MapObjects2.Polygon<BR>    Dim b As MapObjects2.Polygon<BR>    Dim c As Object</P>
<P>Set c = b.Intersect(a)                  <BR> If Not c Is Nothing Then    <BR> If c.shapeType = MapObjects2.ShapeTypeConstants.moShapeTypePolygon Then   <BR>                           <BR> ElseIf c.shapeType = MapObjects2.ShapeTypeConstants.moShapeTypeRectangle Then </P>
<P>End If<BR>这个在VC++中怎么实现呀</P>