Method data

examples/NoValues/mainwindow.cpp:56–62

NOTE: The following method will not be called by KD Chart, because the model is returning 0 for columnCount() / rowCount().

    // NOTE: The following method will not be called by KD Chart,
    //       because the model is returning 0 for columnCount() / rowCount().
    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override
    {
        Q_UNUSED(role);
        qDebug() << "EmptyModel::data(" << index.row() << index.column() << ")";
        Q_ASSERT_X(false, "EmptyModel::data", "We should not end here...");
        return QVariant();
    }

    QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const override
    {