随着Internet和Intranet应用的飞速发展，COM(Component Object Model，组件对象模型)以其巨大的潜力渗透到软件学科的各个领域。在Windows操作平台下，众多以COM形式提供的组件模块，如DirectX多媒体软件包、OLE DB/ADO数据库组件系统等，极大地丰富了操作系统的功能。由于COM机制允许任意两组件之间相互通信而不必关心是在何种计算机上的何种操作系统下运行，也不用关心组件是使用何种语言编制的，这使COM技术拥有了强大的生命力。尤其是Windows 2000同COM的下一代产品COM+的结合更加紧密，将使COM/COM+技术得到更广泛的应用。本文介绍在VC++ 6.0下编写COM客户程序的三种方法，虽然每一种方法都可以达到使用代码组件的目的，但详细了解并掌握所有方法会为根据具体情况选择适当方法提供更大的余地。

-With the rapid Internet and Intranet applications development, COM (Component Object Model, Component Object Model) for its tremendous potential to infiltrate all areas of software disciplines. In the Windows operating platform, the number of components in the form of COM modules, such as DirectX multimedia software package, OLE DB/ADO database component systems, which greatly enriched the operating system functions. Because the COM mechanism allows communication between any two components and do not care what is what on the computer operating systems, they do not care what language the component is prepared to use this technology to have a powerful COM vitality. Especially the next generation of Windows 2000 with COM, COM+ combination of products more closely, make COM/COM+ technology is more widely used. This article describes the preparation of VC++ 6.0 COM client under the three methods, although each method can achieve the purpose of using the code components, but more to understa