[Libevent-users] GetQueuedCompletionStatus return values question/problem

[Kevin Sanders]

On 11/1/06, Toby Douglass <toby.douglass at summerblue.net> wrote:
> Kevin Sanders wrote:
> >> Now, the problem is this: ERROR_SUCCESS is #defined as zero!
> >>
> >> In other words, I don't think it's possible to differentiate between
> >> case 3 and 4, because in case 3, *lpNumberOfBytes might be 0 just by
> >> chance.
>
> > Call GetLastError().
>
> I could be wrong, but I don't think that helps you, because you would
> have to know the full list of possible errors for both cases, so that
> you could be certain that you were correctly differentiating between them.
>
> I have no idea what errors either cases might return, nor any idea of
> where to look to find the full list of possible errors for both cases
> and indeed I suspect that information is not documented.

In case 3, GetLastError will not be 0, in case 4, GetLastError will be 0.