Windows提供了虚拟的鼠标键盘动作
keybd_event(VK_F4,0,0,0);
键盘F4按下
keybd_event(VK_F4,0,KEYEVENTF_KEYUP,0);
键盘F4抬起
正常的按键方式是键盘被按下，然后等几个ms抬起，所以要用Sleep函数将按键操作隔开

mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0,0);
鼠标左键按下
mouse_event(MOUSEEVENTF_LEFTUP,0,0,0,0);
鼠标左键抬起
操作同键盘