windows系统下的编程，消息message的传递是贯穿其始终的。这个消息我们可以简单理解为一个有特定意义的整数，正如我们看过的老故事片中的“长江长江，我是黄河”一个含义。windows中定义的消息给初学者的印象似乎是“不计其数”的，常见的一部分消息在winuser.h头文件中定义。hook与消息有着非常密切的联系，它的中文含义是“钩子”，这样理解起来我们不难得出“hook是消息处理中的一个环节，用于监控消息在系统中的传递，并在这些消息到达最终的消息处理过程前，处 理某些特定的消息”。这也是hook分为不同种类的原因。-Windows system programming, to deliver the message message is through the beginning of. The news we can be simply understood as the meaning of a particular integer, as we have seen the old story in the "Yangtze River, I am the Yellow River" a meaning. Definition of the message in windows for beginners to the impression that it is "too many to count", a common part of the messages defined in the winuser.h header file. Hook and message has a very close contact, Chinese and its meaning is "hook", it is not difficult for us to understand that "hook is a link in the transfer of message processing, for monitoring message in the system, and arrive at the final message in the message processing process, processing certain news". This is also the reason for different types of hook.