By analyzing the characteristics of COM and graph of topology component the design and implementation method of general graph of topology component based on COM technique is given in term of the OO design for the software.

• 通过分析COM技术及拓扑图组件的特点,按照面向对象的软件设计思想,给出了基于COM的通用拓扑图组件设计和实现方法。