这是一款可用于VB、VC++的CAD绘图OCX控件，文件不大，却具备通用平面CAD功能，方便的处理各种矢量图形，并提供交换文件及二次开发接口。适用于CAD/GIS等图形相关的软件开发。-This is a can be used for VB, VC++ CAD OCX drawing control, file is small, but with the general plane CAD function, convenient to deal with all kinds of vector graphics, and provides the exchange of documents and two secondary development interface. Application of software development in CAD/GIS such as graphics related.