HasOverlappedIoCompleted macro

Provides a high performance test operation that can be used to poll for the completion of an outstanding I/O operation.

Syntax

void HasOverlappedIoCompleted(
   lpOverlapped
);

Parameters

lpOverlapped

A pointer to an OVERLAPPED structure that was specified when the overlapped I/O operation was started.

Return Value

None

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

   
Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header winbase.h (include Windows.h)

See Also

CancelIo

ConnectNamedPipe

OVERLAPPED

ReadFile

TransactNamedPipe

WaitCommEvent

WriteFile