【WSAEvent】

1、WSACreateEvent。创建WSA事件。

2、WSAEventSelect。

　　

　　lNetworkEvents [in]

　　A bitmask that specifies the combination of FD_XXX network events in which the application has interest.

　　0表示成功。

参考：https://msdn.microsoft.com/en-us/library/ms741576(VS.85).aspx

3、WSAWaitForMultipleEvents。

　　The WSAWaitForMultipleEvents function returns when one or all of the specified event objects are in the signaled state, when the time-out interval expires, or when an I/O completion routine has executed.

　　

参考：https://msdn.microsoft.com/en-us/library/ms742219(v=vs.85).aspx

4、WSAEnumNetworkEvents。

　　

　　The WSAEnumNetworkEvents function discovers occurrences of network events for the indicated socket, clear internal network event records, and reset event objects (optional).

链接：https://msdn.microsoft.com/en-us/library/windows/desktop/ms741572(v=vs.85).aspx