帮帮我这个新手
在建立拉伸实体时，怎样能更有效的将之前生成的拉伸平面消除呢？本人刚刚开始学习，请各位师兄、师姐多多帮忙。 你的意思有点不清楚，不知道是删除已拉伸好的实体，还是恢复操作。
若是前者可删除，是后者则加上以下语句：sendcommand "U " <PRE class=Code>Sub Example_<FONT style="BACKGROUND-COLOR: #316ac5" color=#ffffff>AddRegion</FONT>()
' This example creates a region from an arc and a line.
Dim curves(0 To 1) As AcadEntity
' Define the arc
Dim centerPoint(0 To 2) As Double
Dim radius As Double
Dim startAngle As Double
Dim endAngle As Double
centerPoint(0) = 5#: centerPoint(1) = 3#: centerPoint(2) = 0#
radius = 2#
startAngle = 0
endAngle = 3.141592
Set curves(0) = ThisDrawing.ModelSpace.AddArc(centerPoint, radius, startAngle, endAngle)
' Define the line
Set curves(1) = ThisDrawing.ModelSpace.AddLine(curves(0).startPoint, curves(0).endPoint)
' Create the region
Dim regionObj As Variant
regionObj = ThisDrawing.ModelSpace.<FONT style="BACKGROUND-COLOR: #316ac5" color=#ffffff>addregion</FONT>(curves)</PRE><PRE class=Code>dim height as double<BR>dim taperangle as double<BR>height=3<BR>taperangle=0</PRE><PRE class=Code>dim solidobj as acad3dsolid<BR>set solidobj=thisdrawing.modelspace.addextrudedsolid(regionobj(0),height,taperangle)<BR>zoomallEnd Sub</PRE><PRE class=Code>在上面在上面这个例子中，我们先建立了面域regionobj，然后将拉伸成三维实体，</PRE><PRE class=Code>但此时图形空间中还存在面域regionobj，这种情况下，我们如何将该面域删除。</PRE><PRE class=Code> 谢谢帮助！！！</PRE> 这么老的帖子我也把它顶起来，因为我也遇到这样的问题，期待高手解决
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