vc+mapx的一点问题 急！！！

<P>地图在放大缩小时发生拉伸形变，自己做的地图，用setcurrenttool好像不行，是否要像mo里那样获取选择矩形框，具体怎么搞？</P>
<P>程序运行中生成新的tab，再用addlayer总是不行，怎么搞？</P>
<P>我的代码如下:</P>
<P>CMapXLayerInfo lyrInfo;
 lyrInfo.CreateDispatch(lyrInfo.GetClsid());
 COleVariant lyrinfoVt;
 lyrinfoVt.vt = VT_DISPATCH;
 lyrinfoVt.pdispVal = lyrInfo.m_lpDispatch;
 lyrinfoVt.pdispVal->AddRef();</P>
<P> CMapXFields fields;
 fields.CreateDispatch(fields.GetClsid());</P>
<P> fields.Add(COleVariant("Name"), COleVariant("Name"),
 COleVariant((short)miAggregationIndividual),
 COleVariant((short)miTypeString))</P>
<P> COleVariant fieldsVt;
 try
 {
 fieldsVt.vt = VT_DISPATCH;
 fieldsVt.pdispVal = fields.m_lpDispatch;
 fieldsVt.pdispVal->AddRef();
 }
 catch(...)
 {
  AfxMessageBox("fail to create fields!");
 }</P>
<P>
 lyrInfo.SetType(miLayerInfoTypeTemp);
 <a>file://lyrInfo.AddParameter</A>("FileSpec", COleVariant("mytgt.tab"));
 lyrInfo.AddParameter("Name", COleVariant("Target"));
 lyrInfo.AddParameter("Fields", fieldsVt);*/</P>
<P>
// ctrlWorldMap.GetLayers().Add(/*LPDISPATCH(*/lyrInfo/*)*/,1);
// ctrlWorldMap.GetLayers().Add("map\\目标.tab");</P>
<img src="images/post/smile/dvbbs/em12.gif" />