请指点！！

 
<P>Private Sub UIButtonControl1_Click()<BR>GraphicSelectionCount<BR>End Sub</P>
<P>Public Sub GraphicSelectionCount()<BR>  Dim pMxDocument As IMxDocument<BR>  Dim pMap As IMap<BR>  Dim pPageLayout As IPageLayout<BR>  Dim pMapGraphicsSelect As IGraphicsContainerSelect<BR>  Dim pPageLayoutGraphicsSelect As IGraphicsContainerSelect<BR>  <BR>  Set pMxDocument = Application.Document<BR>  Set pMap = pMxDocument.FocusMap<BR>  Set pPageLayout = pMxDocument.PageLayout<BR>  Set pMapGraphicsSelect = pMap<BR>  Set pPageLayoutGraphicsSelect = pPageLayout<BR>  MsgBox pMapGraphicsSelect.ElementSelectionCount<BR>  MsgBox pPageLayoutGraphicsSelect.ElementSelectionCount<BR>End Sub</P>
<P>我在ARCMAP中加载了一个图层 并在里面选择了几个图斑，为什么返回值 就是0 和1 </P>
<P>pMapGraphicsSelect.ElementSelection  指的是选中什么东西 </P>
<P>pPageLayoutGraphicsSelect 指的又是选中什么东西</P>