请高手帮忙看一下线要素光滑代码，为什么没有执行光滑操作，谢谢

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<P>请高手帮忙看一下线要素光滑代码，为什么没有执行光滑操作，谢谢</P>
<P>IWorkspaceEditPtr  ipWorkspaceEdit;<br>ipWorkspaceEdit = XEditorAPI::GetWorkspaceEdit(m_ipCurrentLayer);<br>if(ipWorkspaceEdit == NULL)<br>  return ;<br>ipWorkspaceEdit->StartEditOperation();</P>
<P>IFeaturePtr ipFeature;<br>ipFeatureCursor->NextFeature(;ipFeature);<br>while(ipFeature)<br>{<br>  IGeometryPtr ipGeo;<br>  ipFeature->get_Shape(;ipGeo);<br>  IPolylinePtr ipPolyline(ipGeo);<br>  double dlength;<br>  ipPolyline->get_Length(;dlength);</P>
<P>  if(ipPolyline != NULL)<br>  {<br>   ipPolyline->Smooth(10000);<br>   AfxMessageBox("smooth");<br>  }</P>
<P>  ipFeatureCursor->NextFeature(;ipFeature);<br>}<br><br>ipWorkspaceEdit->StopEditOperation();<br><br><br>IActiveViewPtr ipActiveView(ipMap);<br>ipActiveView->Refresh();</P></DIV>