AutoCAD VBA 通过选择集删除图层上所有对象和图层

'删除图层上所有对象
Function DelAllInLayer(ByVal LName As String)
    'On Error Resume Next
    Dim SSet As AcadSelectionSet
    Set SSet = CreateSelectionSet("XXX")
    Dim Ft(0) As Integer, Fd(0)
    Ft(0) = 8: Fd(0) = LName
    SSet.Select acSelectionSetAll, , , Ft, Fd
    Dim E As AcadEntity
    MsgBox SSet.Count
    For Each E In SSet
        E.Delete
    Next
End Function