This article deals with how to develop a GIS using VC++, and the emphases are placed on the data process to construct a road information system, and the developing procedure using API functions and MFC class library in MAPGIS environment.

• 结合VC ++开发地理信息系统的优点 ,着重讨论了在GIS平台MAPGIS下建立道路信息系统的数据处理方法及如何用API函数和MFC类库实现该系统的过程