绘制圆的VC++源代码,能够有效的帮助初学者学习VC++编程-Draw a circle in the VC++ source code, can effectively help the beginner learn VC++ programming

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