COM组件探究与接口实现

COM Components Study and Interface Realization

在COM组件模型中，接口是最为重要的概念，在整个应用系统中起决定性作用，外界和组件方所有的交互都通过接口实现，因此接口设计的优劣直接影响组件的质量。接口是一组方法的集合，其方法也称为接口成员函数。COM组件为COM对象提供活动空间，COM对象以COM接口的方式提供服务。在COM中接口就是一切，对于客户来说，一个组件就是一个接口集，客户只要知道接口就可以对组件进行操作了。随着COM技术的不断完善，COM技术将得到更广泛的应用。

The COM component model,the interface is the most important concepts in the entire application system play a decisive role in the outside world and interact with the component side through all of the interface,the interface design will directly affect the quality of components.Interface is a collection of methods,the method is also known as the interface member functions.COM components to provide space for the COM objects,COM objects to COM interface approach to service delivery.In COM,the interface is everything,for customers,a component is a set of interfaces,customers can know the interfaces of the components can operate.As technology continues to improve COM,COM technology will be more widely used.