bool CObjectModel::insertRows(int row, int count, const QModelIndex &parent)
{
//	qDebug() << "insertRows " << row << count << parent ;
	beginInsertRows(parent, row, row+count-1) ;

	ObjectItem *p = getItemFromIndex(parent) ;
	p->insertChild(row, new ObjectItem(QString(), p)) ;

	endInsertRows();
	return true ;
}