QModelIndex StringListModel index(int row, int column, const QModelIndex& parent) const{ return QModelIndex();}bool dropMimeData(const QMimeData* data, Qt::DropAction action, int row, int column, const QModelIndex& parent){ return false;}
QVariant data(const QModelIndex &index, int role) const; QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const; QModelIndex parent(const QModelIndex &index) const; int rowCount(const QModelIndex &parent = QModelIndex()) const; int columnCount(const QModelIndex &parent = QModelIndex()) const;