private void createAndAttachEvent(long ov) throws WindowsException {
  long hEvent=CreateEvent(false,false);
  UNSAFE.putAddress(ov + OFFSETOF_HEVENT,hEvent);
}

private void createAndAttachEvent ( long ov ) throws WindowsException { long hEvent = CreateEvent ( false , false ) ; UNSAFE . putAddress ( ov + OFFSETOF_HEVENT , hEvent ) ; }
creates an unnamed event and set it as the hevent field in the given overlapped structure
