[bold]How to tell a R/W event when IOCP entry is available?[/bold]

[tzhong]

Hi, I have another question on Io completion port:

for poll()/select() on unix, we know the event on the socket is a read or write message by looking at the event_out(poll) or comparing the bit(select). When I call GetQueuedCompletionStatus() and it returns with an I/O completion entry, how do I know whether it's time to read data in socket, or write data to socket?

Thanks in advance!