向指定窗口发送模拟键盘按键消息

//根据窗口标题找到对应窗口的句柄

HWND hq = FindWindow(NULL, title);
if (hq != NULL)
{
	cout << "找到对应窗口";
}
else
{
	cout << "没找到对应窗口";
}

//经过句柄向指定窗口发送模拟键盘按键消息

SendMessage(hq, WM_KEYDOWN, 'L', 0);

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keybd_event('M', 0, 0 ,0);
keybd_event('M', 0, KEYEVENTF_KEYUP ,0);

也能够模拟键盘和鼠标按键，但没法向指定窗口发送按键消息，除非让目标窗口位于最顶层

参考http://blog.csdn.net/dazhong159/article/details/7903382

http://www.cnblogs.com/wind-net/archive/2012/11/01/2750123.html

http://blog.csdn.net/xgx198831/article/details/6679064

http://blog.csdn.net/hhaoma/article/details/3170778

keybd_event('M', 0, 0 ,0);
keybd_event('M', 0, KEYEVENTF_KEYUP ,0);

也能够模拟键盘和鼠标按键，但没法向指定窗口发送按键消息，除非让目标窗口位于最顶层