《COM技术内幕》是一本很有意思的书，可以说是中级程序员到高级程序员的过渡，有兴趣的朋友不防学学。COM，即Microsoft组件对象模型（Component Object Model），是开发软件组件的一种方法。组件实际上是一些小的二进制可执行程序，它可以给应用程序、操作系统以及其他组件提供一些服务。开发定制的COM组件就如同开发动态的、面向对象的API。多个COM对象可以连接起来以形成应用程序或组件系统，并且组件可以在运行时，在不重新链接或者编译应用程序的情况下被卸下或替换掉。Microsoft的许多技术，如ActiveX、DirectX以及OLE等都是基于COM建立起来的，并且Microsoft的开发人员也大量使用COM组件来定制他们的应用程序及操作系统。-The insider COM technology is a very interesting book, which is intermediate programmers to senior programmers transition, have the interest friend don t learn. COM, Microsoft Component Object Model (Component Object Model), is to develop a method of software Component. Component is actually a small binary executable program, it can give application procedures, operating system and other components provide some service. Develop customized COM components as dynamic and object oriented API. Multiple COM object can be connected to the application or component system, and components can at runtime, links or compile application cases were discharged or replace. Microsoft s many techniques, such as ActiveX, and OLE is DirectX based on COM built, and Microsoft developers used COM components to customize their applications and operating systems