一个基于MO 和VC++的地理信息系统程序，该程序不但实现了GIS的常用的对数据的显示，分析，处理等功能，还实现了绘制GIS符号等功能-MO-based and VC++ GIS program, the program has not only made of commonly used GIS data display, analysis, processing and other functions, but also achieved a symbol, such as GIS mapp