说明：  Windows消息在系统及应用程序的运行中起着关键的作用，每一次键盘、鼠标的点击 都会有消息的传递，应用程序通过对消息的响应来实现与用户的交互。钩子(Hook)函数作为Win— dows编程中的一种强有力的工具，可以有效地截获Windows系统内部传递的消息，在消息到达目标窗 1：7的处理函数之前先对消息做出相应处理，从而实现对应用程序的监视与控制。文中描述了Windows 消息的构成，介绍了Hook函数的安装、释放及类型，最后介绍了一个Hook函数实现应用程序操作的 捕捉的实例。
(Windows messages in the system and applications running in a critical role to play, every keyboard, mouse clicks, there will be transmission of messages, the application of information in response to realize the interaction with the user. Hook (Hook) function as a Win-dows of a powerful programming tool that can effectively pass intercepted Windows system information in the message window to reach the goal of treatment 1:7 function before treatment of the news and make the corresponding in order to realize the application of surveillance and control. The article describes the Windows message composition, introduction of the Hook function to install, release and type, and finally introduce a function realize Hook applications to capture examples of the operation.)