COM中可连接对象的通信机制

The Communication Principle of Connectable Object in COM

COM(Component Object Model)技术是一种新的软件开发方法,它提供了跨越编程语言、操作系统甚至网络来访问组件对象的通用途径。通常,客户与组件之间的通信过程是单向的,客户创建组件对象,然后调用对象所提供的功能,这往往不能够满足实际的需要。对于一个全面的交互过程来说,组件对象也要主动与客户进行通信,可连接对象的通信机制可以很好地解决这个问题。并且对实际工作很有指导意义。

COM （Component Object Model） technology as a new software developing method can provide general approach span programming language,operating system even network to visit component object. Usually, the communication between client and component object is one- way, the client creats the component object, then call the function supplied by component object. Such one way communication can＇t be able to satisfy practical need. For a mutual communication process,most time, component object should communicate with client activly, the communication principle of connectable object can resolve this problem well. This has guide meaning for practicality work.