该内容是公司内部对VC中如何使用COM接口做的编程培训，讲的很不错，很细致，并有代码辅助参考。通过此培训，可以对想使用COM编程的人有较好效果，能大致清楚COM编程的内容-The content is internal to the VC in how to use COM interfaces to do the training program, said very good, very detailed, and auxiliary reference code. Through this