主要介绍基于UG二次开发的VC编程教程，很适合与初学者使用，同时也介绍了和数据库的相关知识-Introduces the development of UG VC programming tutorial, it is suitable for use with beginners, but also describes the knowledge and database

acad数据库连接与开发 AutoCAD2004-acad database connection with the development AutoCAD2004

CAD监视器插件，用于查看CAD数据库结构，二次开发调试功能-CAD monitor plugin for viewing CAD database structure, secondary development debugging features