IO 操作有太多讲究了，Overlapped IO重叠IO可以让你要求操作系统为你传送数据，并且再传送完毕时通知你， 它使你的程序在IO进行过程中仍然能够继续处理事务。 -IO operations have too much stress the Overlapped IO overlapped IO can let you ask the operating system for you to transfer the data, and then notify you once t