return rv;
oeEventEnumerator::GetNext(nsISupports **_retval){            if( mCurrentIndex >= mEventVector.size() )    {        *_retval = nsnull;    }    else    {        nsISupports* event = mEventVector[ mCurrentIndex ];        event->AddRef();        *_retval = event;        ++mCurrentIndex;    }        return NS_OK;}