孙鑫20集的第18集命名管道，在创建的时候一直报警“等待客户端连接失败！”？

If the operation is asynchronous, ConnectNamedPipe returns immediately. If the operation is still pending, the return value is zero and GetLastError returns ERROR_IO_PENDING.

如果你使用的是异步，ConnectNamedPipe会立即返回，如果没有客户链接，返回0值，用GetLastError返回ERROR_IO_PENDING.

(You can use the HasOverlappedIoCompleted macro to determine when the operation has finished.) If the function fails, the return value is zero and

GetLastError returns a value other than ERROR_IO_PENDING or ERROR_PIPE_CONNECTED.

你可以用HasOverlappedIoCompleted这个宏，区确定操作是否结束

大约意思就是，你用的异步操作，如果没有客户链接，就一直会返回ERROR_IO_PENDING