Provides a high performance test operation that can be used to poll for the completion of an outstanding I/O operation.
void HasOverlappedIoCompleted( lpOverlapped );
A pointer to an OVERLAPPED structure that was specified when the overlapped I/O operation was started.
Do not call this macro unless the call to GetLastError returns ERROR_IO_PENDING, indicating that the overlapped I/O has started.
To cancel all pending asynchronous I/O operations, use the CancelIo function. The CancelIo function only cancels operations issued by the calling thread for the specified file handle. I/O operations that are canceled complete with the error ERROR_OPERATION_ABORTED.
|Minimum supported client||Windows XP [desktop apps only]|
|Minimum supported server||Windows Server 2003 [desktop apps only]|
|Header||winbase.h (include Windows.h)|