如何在QAbstractTableModel中设置数据

#include <QAbstractTableModel>
#include <QVariant>

class MyTableModel : public QAbstractTableModel {
    Q_OBJECT

public:
    MyTableModel(QObject *parent = nullptr) : QAbstractTableModel(parent) {}

    int rowCount(const QModelIndex &parent = QModelIndex()) const override {
        return 3; // 示例数据行数
    }

    int columnCount(const QModelIndex &parent = QModelIndex()) const override {
        return 2; // 示例数据列数
    }

    QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const override {
        if (!index.isValid())
            return QVariant();

        if (role == Qt::DisplayRole) {
            // 返回示例数据
            return QString("Row%1, Column%2").arg(index.row() + 1).arg(index.column() + 1);
        }

        return QVariant();
    }

    bool setData(const QModelIndex &index, const QVariant &value, int role = Qt::EditRole) override {
        if (data(index, role) != value) {
            // 设置数据
            // 这里假设数据存储在一个二维数组中
            // data_[index.row()][index.column()] = value.toString();
            emit dataChanged(index, index, {role});
            return true;
        }
        return false;
    }

    Qt::ItemFlags flags(const QModelIndex &index) const override {
        if (!index.isValid())
            return Qt::NoItemFlags;

        return Qt::ItemIsEditable | QAbstractTableModel::flags(index);
    }

private:
    // 假设数据存储在一个二维数组中
    // QVector<QVector<QVariant>> data_;
};

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);

    QTableView view;
    MyTableModel model;
    view.setModel(&model);
    view.show();

    return app.exec();
}