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