这个到底是出了什么问题呢

<P>ISimpleLineSymbol pLineSymbol;<BR>    pLineSymbol = new SimpleLineSymbol();<BR>    IRgbColor rgbColor = new RgbColorClass();<BR>    ISymbol pSymbol;<BR>    //IFontDisp pFont;<BR>    //线属性<BR>    pLineSymbol.Width = 2; //线宽<BR>    rgbColor = new RgbColor(); //线色<BR>    rgbColor.Red = 128;<BR>    rgbColor.Green = 128;<BR>    rgbColor.Blue = 128;<BR>    pLineSymbol.Color = rgbColor;</P>
<P>    pSymbol = (ISymbol)m_pLineSymbol;<BR>//    pSymbol.ROP2 = esriRasterOpCode.esriROPNotXOrPen;<BR>  <BR>    IRubberBand pRubberLine;<BR>    pRubberLine = new RubberLine();<BR>    <BR>    IPolyline pPolyline;<BR>    pPolyline = (IPolyline)pRubberLine.TrackNew(g_ScreenDisp,(ISymbol)pSymbol);</P>
<P>    this.g_ScreenDisp.StartDrawing(g_ScreenDisp.hDC, (short)esriScreenCache.esriNoScreenCache);<BR>    this.g_ScreenDisp.SetSymbol((ISymbol)pLineSymbol);<BR>    this.g_ScreenDisp.DrawPolyline(pPolyline);<BR>    this.g_ScreenDisp.FinishDrawing();<BR>    </P>
<P><BR>    ISegmentCollection psc;<BR>                psc = new PolylineClass(); <BR>    object missing = Type.Missing;<BR>    psc.AddSegment((ISegment)pPolyline,ref missing,ref missing);<BR>                IGeometry   pgeo1,pgeo2;<BR>                pgeo1=(IGeometry) psc;<BR>    ISpatialReferenceFactory2 spatRefFact = new SpatialReferenceEnvironmentClass();<BR>    m_GeographicCoordinateSystem = spatRefFact.CreateGeographicCoordinateSystem((int) esriSRGeoCSType.esriSRGeoCS_WGS1984);</P>
<P>                pgeo1.SpatialReference =  m_GeographicCoordinateSystem;<BR>    </P>
<P>              //Can now be used with ITopologicalOperator methods</P>
<P>               <BR>                ITopologicalOperator pT;<BR>    pT=new PolylineClass();<BR>                pT.Cut(pPolyline,out pgeo1,out pgeo2 );<BR> <BR>这个是我的图元分割的,但是运行之后,分割的效果始终是不出现,现请各位帮小弟看看问题出现在什么地方了 </P>

<P>在线的各位兄弟都过来看看 ~~</P>

为什么没人来帮我看看这个问题呢 ??

<FONT color=#000000>请

<SCRIPT language=javascript type=text/javascript><br>document.write (usercolor('3','hsghxm'));<br></script>

</FONT> <FONT face=Verdana color=#da2549><B>hsghxm<FONT color=#000000>兄来帮忙看看  我是想实现图元分割的,上面是代码,你看看是什么地方出错了</FONT></B></FONT>

请hsghxm兄帮忙看看,为什么我的做的图元分割不能实现呢??