请问如何用VBA获取样条曲线的拟合点个数

白埠农夫

下面是从屏幕上拾取一条样条曲线并显示其有多少个拟合点的代码片段：

1. 
   
2. dim splineObj as AcadEntity
   
3. dim pickedPoint as Variant
   
4. ThisDrawing.Utility.GetEntity splineObj,pickedPoint
   
5. Msgbox "The selected spline has "&splineObj.NumberofFitPoints&" fitpoints"
   

<br /> dim splineObj as AcadEntity<br /> dim pickedPoint as Variant<br /> ThisDrawing.Utility.GetEntity splineObj,pickedPoint<br /> Msgbox "The selected spline has "&splineObj.NumberofFitPoints&" fitpoints"<br />

但是运行时老是提示“类型不匹配”，请问是什么原因？请知道的朋友指导一下，非常感谢！

VBALISPER

帮助里有这个例子
Sub Example_NumberOfFitPoints()
    ' This example creates a spline object in model space.
    ' It then finds the number of control points for that spline.

    ' Create the spline
    Dim splineObj As AcadSpline
    Dim startTan(0 To 2) As Double
    Dim endTan(0 To 2) As Double
    Dim fitPoints(0 To 8) As Double
   
    startTan(0) = 0.5: startTan(1) = 0.5: startTan(2) = 0
    endTan(0) = 0.5: endTan(1) = 0.5: endTan(2) = 0
    fitPoints(0) = 1: fitPoints(1) = 1: fitPoints(2) = 0
    fitPoints(3) = 5: fitPoints(4) = 5: fitPoints(5) = 0
    fitPoints(6) = 10: fitPoints(7) = 0: fitPoints(8) = 0
    Set splineObj = ThisDrawing.ModelSpace.AddSpline(fitPoints, startTan, endTan)
    ZoomAll
   
    MsgBox "The Spline has " & splineObj.NumberOfFitPoints & " fit points.", , "NumberOfFitPoints Example"

End Sub