写了一个键盘钩子，利用了vb api函数GetAsyncKeyState，能够准确的截取没有加密的键盘记录，送给大家学习。,Write a keyboard hook, using a vb api function GetAsyncKeyState, accurate interception can not keyloggers encrypted, sent to them to learn.

点击键盘发出声音小程序，主要是使用了GetAsyncKeyState和Beep API函数的功能，用GetAsyncKeyState函数获得键盘是否按下的状态信息，Beep函数演示了使用PC内部喇叭按音阶发出声音。-Click on the small keyboard sound procedures, mainly the use of the Beep API function GetAsyncKeyState and the function of GetAsyncKeyState fu