C#中键盘钩子的使用（转)-.NET教程,Windows开发

public class win32hook
{

    [dllimport("kernel32")]
    public static extern int getcurrentthreadid();

    [dllimport( "user32",
charset=charset.auto,callingconvention=callingconvention.stdcall)]
    public static extern int  setwindowshookex(
        hooktype idhook,
        hookproc lpfn,
        int hmod,
        int dwthreadid);

    public enum hooktype
    {
        wh_keyboard = 2
    }
    
public delegate int hookproc(int ncode, int wparam, int    lparam);

    public void sethook()
    {
        // set the keyboard hook
        setwindowshookex(hooktype.wh_keyboard,
            new hookproc(this.mykeyboardproc),
            0,
            getcurrentthreadid());
    }

    public int mykeyboardproc(int ncode, int wparam, int lparam)
    {
        //在这里放置你的处理代码        return 0;
    }
}
使用方法
可以在form的构造函数里放入
win32hook hook = new win32hook();
hook.sethook();