c++代码

好的，以下是相应的C++代码示例：

#include <QAbstractTableModel>
#include <QItemDelegate>
#include <QLineEdit>
#include <QIntValidator>
#include <QVariant>
#include <QModelIndex>
#include <QApplication>
#include <QTableView>

class CustomData {
public:
    CustomData(QString name, int age) : _name(name), _age(age) {}

    QString name() const {
        return _name;
    }

    int age() const {
        return _age;
    }

    void setAge(int age) {
        _age = age;
    }

private:
    QString _name;
    int _age;
};

class CustomTableModel : public QAbstractTableModel {
public:
    CustomTableModel(QList<CustomData*> data, QObject* parent = nullptr)
        : QAbstractTableModel(parent), _data(data) {}

    int rowCount(const QModelIndex& parent = QModelIndex()) const override {
        Q_UNUSED(parent);
        return _data.size();
    }

    int columnCount(const QModelIndex& parent = QModelIndex()) const override {
        Q_UNUSED(parent);
        return 2;
    }

    QVariant data(const QModelIndex& index, int role = Qt::DisplayRole) const override {
        if (role == Qt::DisplayRole) {
            if (index.column() == 0) {
                return _data.at(index.row())->name();
            }
            else if (index.column() == 1) {
                return _data.at(index.row())->age();
            }
        }
        else if (role == Qt::EditRole) {
            return QVariant::fromValue(_data.at(index.row()));
        }
        return QVariant();
    }

    bool setData(const QModelIndex& index, const QVariant& value, int role = Qt::EditRole) override {
        if (role == Qt::EditRole) {
            CustomData* data = value.value<CustomData*>();
            _data.replace(index.row(), data);
            emit dataChanged(index, index);
            return true;
        }
        return false;
    }

    QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const override {
        if (role == Qt::DisplayRole && orientation == Qt::Horizontal) {
            if (section == 0) {
                return "Name";
            }
            else if (section == 1) {
                return "Age";
            }
        }
        return QVariant();
    }

private:
    QList<CustomData*> _data;
};

class CustomDelegate : public QItemDelegate {
public:
    QWidget* createEditor(QWidget* parent, const QStyleOptionViewItem& option, const QModelIndex& index) const override {
        Q_UNUSED(option);
        Q_UNUSED(index);
        QLineEdit* editor = new QLineEdit(parent);
        QIntValidator* validator = new QIntValidator(0, 100, editor);
        editor->setValidator(validator);
        return editor;
    }

    void setEditorData(QWidget* editor, const QModelIndex& index) const override {
        QVariant value = index.model()->data(index, Qt::EditRole);
        CustomData* data = value.value<CustomData*>();
        QLineEdit* lineEdit = static_cast<QLineEdit*>(editor);
        lineEdit->setText(QString::number(data->age()));
    }

    void setModelData(QWidget* editor, QAbstractItemModel* model, const QModelIndex& index) const override {
        CustomData* data = model->data(index, Qt::EditRole).value<CustomData*>();
        QLineEdit* lineEdit = static_cast<QLineEdit*>(editor);
        data->setAge(lineEdit->text().toInt());
        model->setData(index, QVariant::fromValue(data), Qt::EditRole);
    }

    void updateEditorGeometry(QWidget* editor, const QStyleOptionViewItem& option, const QModelIndex& index) const override {
        Q_UNUSED(index);
        editor->setGeometry(option.rect);
    }
};

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

    QList<CustomData*> data = { new CustomData("Tom", 20),
                                new CustomData("Jerry", 30),
                                new CustomData("Lucy", 25) };
    CustomTableModel model(data);
    QTableView view;
    view.setModel(&model);
    CustomDelegate delegate;
    view.setItemDelegate(&delegate);
    view.show();

    return a.exec();
}

这个示例中，我们使用了QList和指针来存储CustomData对象。我们还使用了QVariant::fromValue()和QVariant::value()方法来在模型中存储和检索CustomData对象。

在自定义Delegate中，我们重写了createEditor()、setEditorData()、setModelData()和updateEditorGeometry()方法来实现我们的自定义Delegate。在setEditorData()方法中，我们从模型中检索CustomData对象，并将其转换为QLineEdit中的文本。在setModelData()方法中，我们将文本转换回CustomData对象，并将其存储回模型。