面域是由AcadEntity数组建立的。以上小程序能方便的理解，VBA的AcadEntity实体数组。
Sub ls()
Dim mm() As AcadEntity
mm = oLine
Dim objRegion As Variant
objRegion = ThisDrawing.ModelSpace.AddRegion(mm)
End Sub
Function oLine() As AcadEntity()
Dim Ent As AcadEntity
Dim pp() As AcadEntity
kk = 0
With ThisDrawing
For Each Ent In .ModelSpace
If Ent.Layer = "粗实线" Then
ReDim Preserve pp(kk) As AcadEntity
Set pp(kk) = Ent
kk = kk + 1
End If
Next
End With
oLine = pp
End Function
置顶卡
