Retrieves the results of an overlapped operation
#include <WinAPIFiles.au3>
_WinAPI_GetOverlappedResult ( $hFile, $tOverlapped, ByRef $iBytes [, $bWait = False] )
| $hFile | Handle to the file, named pipe, or communications device. This is the same handle that was specified when the overlapped operation was started by a call to ReadFile, WriteFile, ConnectNamedPipe, TransactNamedPipe, DeviceIoControl, or WaitCommEvent. |
| $tOverlapped | A $tagOVERLAPPED structure or a pointer to it that was specified when the overlapped operation was started. |
| $iBytes | The number of bytes that were actually transferred by a read or write operation. For a TransactNamedPipe operation, this is the number of bytes that were read from the pipe. For a DeviceIoControl operation this is the number of bytes of output data returned by the device driver. For a ConnectNamedPipe or WaitCommEvent operation, this value is undefined. |
| $bWait | [optional] If True, the function does not return until the operation has been completed. If False and the operation is still pending, the function returns False and the GetLastError function will return ERROR_IO_INCOMPLETE. |
| Success: | True |
| Failure: | False, call _WinAPI_GetLastError() to get extended error information |
Search GetOverlappedResult in MSDN Library.