利用钩子函数截取键盘消息，并读出按下的键对应的字母，是个不错的学习hook的样板程序。-use of the keyboard hook function interception of information, and read out the keys by pressing the corresponding letter. is a good model for studying the hook procedures.

本程序是一个简单的模拟程序块,主要对于c++的初学者提供一个开发的样板,-This procedure is a simple simulation program, mainly for beginners c++ provides a development model,