HasOverlappedIoCompleted macro
Provides a high performance test operation that can be used to poll for the completion of an outstanding I/O operation.
Syntax
BOOL HasOverlappedIoCompleted( LPOVERLAPPED lpOverlapped );
Parameters
- lpOverlapped
-
A pointer to an OVERLAPPED structure that was specified when the overlapped I/O operation was started.
Return value
Returns TRUE if the I/O operation has completed, and FALSE otherwise.
Remarks
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.
To get more details about a completed I/O operation, call the GetOverlappedResult or GetQueuedCompletionStatus function.
Requirements
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Minimum supported client |
Windows XP [desktop apps only] |
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Minimum supported server |
Windows Server 2003 [desktop apps only] |
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Header |
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See also