为感兴趣的一组网络事件创建一个事件对象。

调用WSAEvenSelect函数将网络事件和事件对象关联起来。

当网络事件发生时，Winsock使相应的事件对象接受信息，在网络对象上等待的函数就会返回。

调用WSAEnumNetworkEvents函数便可获取到底发生了什么样网络事件，针对不用的事件予以不同的操作。

-Create an event object of interest to a group of network events. Call WSAEvenSelect function the associate network events and event objects. When network events, Winsock event object to receive information, waiting for network objects function will return. Call WSAEnumNetworkEvents function are able to obtain in the end what kind of network events, event not to be different.