摘要： 在总结开发基于实体模型的ＣＡＭ系统经验的基础上，论述了如何利用ＣＯＭ技术开发基于ＨｅｌｉｘＤ＆Ｍ的应用，并阐述了常用ＣＯＭ接口的使用方法与技巧，以及Ｈｅｌｉｘ中各类ＣＯＭ之间的关系．

关键词: 组件对象模型, 对象, 接口, 实体模型

Abstract: Helix design & Modeling offers API in the form of COM. This paper discusses bow to develop an application based oil Helix D&M using COM technology. and illustrated the methods and technique of the COM interfaces in common use. as well as the relationships between classes and interfaces.