说明：  本文主要介绍了如何实现替换Windows上的API函数，实现Windows API Hook（当然，对于 socket的Hook只是其中的一种特例）。这种Hook API技术被广泛的采用在一些领域中，如 屏幕取词，个人防火墙等。
(This paper mainly introduces how to replace the API function of Windows to achieve Windows API Hook (Of course, the Hook is only one socket of a special case). Hook API such technology are widely used in a number of areas, such as Screen, personal firewalls.)