将接收异步操作完成通知的。
That receives the notification of the asynchronous operation completion.
正在完成通知更改请求，而且信息没有返回到呼叫方的缓冲区中。
A notify change request is being completed and the information is not being returned in the caller's buffer.
在这个套接字上进行的任何重叠操作都将通过完成端口发出完成通知。
Any overlapped operations performed on the socket will use the completion port for notification.
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