MapSourceĺתmapgis棿
һѺΪDXFʽļ;
ڶmapgisļת;
װDXFļ򿪸ղļ
Ĳ ѡTrkAttribs
ԹرգҲԱ棬ʾ档wlļ
߲,½ļ,Ӹղűwlļ 
 