如何使用layerinfo来生成新的图层呢？

<b>

</b>我的代码如下：
long position=1;
CMapXFields flds;
CMapXLayer lyrNew;
CMapXPoint ptNew;
CMapXFeature ftrNew;
CMapXFeatureFactory ff;
CMapXLayerInfo li;
//


<P>ptNew.CreateDispatch (ptNew.GetClsid ());
ff=m_ctrlMapX.GetFeatureFactory ();
flds.CreateDispatch(flds.GetClsid ());
flds.Add("CellName","CellName");
li.CreateDispatch (li.GetClsid ());
li.SetType(miLayerInfoTypeNewTable);
li.AddParameter("FileSpec",COleVariant("D:\\test\\CellInfo.tab"));
li.AddParameter ("Name",COleVariant("mycustomers"));
COleVariant vflds;
vflds.vt = VT_DISPATCH;
vflds.pdispVal = flds.m_lpDispatch ;
vflds.pdispVal->AddRef();
li.AddParameter ("Fields",vflds);
COleVariant vLi;
vLi.vt=VT_DISPATCH;
vLi.pdispVal =li.m_lpDispatch ;
vLi.pdispVal ->AddRef ();
m_ctrlMapX.GetLayers().Add (vLi,COleVariant(position));
可是，每一次运行到最后一行就会碰到一个错误：access violation
各位大侠帮忙看看！！</P>

<P>偶然看到这个，偶真地头痛，期待有人解决，顶上去先</P>