综合使用ADO和GDAL读取各类常用空间数据格式，并写入Sql server等数据库。-The integrated use of ADO and GDAL to read various types of commonly used spatial data formats, and write, such as Sql server database.

VC+SQL（odbc连接方式）+MapX控件制作的能在地图上显示一个带有旋转方向的图标。参考了尹旭日等编著的《Visual C++环境下MapX的开发技术》。-Produced by the VC+ SQL (odbc connection)+ MapX control can be displayed on the map with a rotation direction of the icon. Reference to Yin Rising Sun, the Visual C++ en