请问如何判读键盘上的按键是否处于按下状态

[loading1412]

如何用一个语句来判读如"X"键是否处于按下状态，VB中有判读按键电位的语句么（提供个C语言语句也可以）
尝试编写连发时想到的，keypress,keydown,keyup只能模拟键盘操作；gelastkey也不能判断键盘状态

[bcrun]

GetKeyState

[sosoben]

GetKeyState If the high-order bit is 1, the key is down; otherwise, it is up. If the low-order bit is 1, the key is toggled. A key, such as the CAPS LOCK key, is toggled if it is turned on. The key is off and untoggled if the low-order bit is 0. A toggle key's indicator light (if any) on the keyboard will be on when the key is toggled, and off when the key is untoggled.

[东方之珠]

键盘钩子：http://bbs.csdn.net/topics/360078252