創建一條輕量多義線并將第二段修改為圓弧。

Private Sub Command1_Click()
    Dim plineobj As AcadLWPolyline
    Dim points(0 To 9) As Double
    points(0) = 1: points(1) = 1
    points(2) = 1: points(3) = 2
    points(4) = 2: points(5) = 2
    points(6) = 3: points(7) = 2
    points(8) = 4: points(9) = 4
    Set plineobj = acadapp.ActiveDocument.ModelSpace.AddLightWeightPolyline(points)
    plineobj.SetBulge 2, 1
    plineobj.Update
    ZoomExtents
End Sub

給輕量多義線添加新定點，設置線寬，封閉多義線，計算多義線圍成的面積。

Private Sub Command1_Click()
    Dim plineobj As AcadLWPolyline
    Dim points(0 To 9) As Double
    points(0) = 1: points(1) = 1
    points(2) = 1: points(3) = 2
    points(4) = 2: points(5) = 2
    points(6) = 3: points(7) = 2
    points(8) = 4: points(9) = 4
    Set plineobj = acadapp.ActiveDocument.ModelSpace.AddLightWeightPolyline(points)
    plineobj.SetBulge 2, 1
    plineobj.Update
    ZoomExtents
    Dim newvertex(0 To 1) As Double
    newvertex(0) = 4: newvertex(1) = 1
    plineobj.AddVertex 5, newvertex
    plineobj.SetWidth 4, 0.1, 0.5
    plineobj.Closed = True
    MsgBox "多義線圍成的面積=" & plineobj.Area
    plineobj.Update
End Sub