怎样利用VBA提取选定的cad中多段线坐标,并将这些坐标写入txt中

1.要改两个部份，第一步，改首行的private 为 public
2.ss_dim.Select acSelectionSetAll, , , dxf_code, dxf_value
改正:
ss_dim.SelectOnScreen dxf_code, dxf_value

这样就是输出选中对象了。

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Public Sub GetLWPOLYLINECoordinates()
Dim ss_dim As AcadSelectionSet, ent As AcadLWPolyline
Dim dxf_code() As Integer, dxf_value() As Variant
Dim i As Long, j As Long
Dim dbCor As Variant, x As Double, y As Double, z As Double

Set ss_dim = ThisDrawing.SelectionSets.Add("ssLine1")
ReDim dxf_code(0), dxf_value(0)
dxf_code(0) = 0: dxf_value(0) = "LWPOLYLINE"
'ss_dim.Select acSelectionSetAll, , , dxf_code, dxf_value
ss_dim.SelectOnScreen dxf_code, dxf_value
Open "d:\aaaaa.txt" For Append As #1

For Each ent In ss_dim
For j = 0 To UBound(ent.Coordinates) \ 2
x = ent.Coordinates(j * 2)
y = ent.Coordinates(j * 2 + 1)
Print #1, (j); ",," & x & "," & y
Next
Next
Close #1
ss_dim.Clear
ss_dim.Delete
End Sub