终于用另外一种方式实现了~~~
Call keybd_event(17, 0, 0, 0)
Call keybd_event(65, 0, 0, 0)
Call keybd_event(17, 0, KEYEVENTF_KEYUP, 0)
Call keybd_event(65, 0, KEYEVENTF_KEYUP, 0)
Call keybd_event(17, 0, 0, 0)
Call keybd_event(67, 0, 0, 0)
Call keybd_event(17, 0, KEYEVENTF_KEYUP, 0)
Call keybd_event(67, 0, KEYEVENTF_KEYUP, 0)
谢谢coachard