Question

如何在QML应用中设计一个C++ Model并使用它

Answer 1

#ifndef DATALISTMODEL_H
#define DATALISTMODEL_H

#include <QAbstractListModel>
#include <QStringList>

class Data
{
public:
Data(const QString &type, const QString &size);

QString type() const;
QString size() const;

private:
QString m_type;
QString m_size;
};

class DataListModel : public QAbstractListModel
{
Q_OBJECT
public:
enum AnimalRoles {
TypeRole = Qt::UserRole + 1,
SizeRole1
};

DataListModel(QObject *parent = 0);
int rowCount(const QModelIndex & parent = QModelIndex()) const;
QVariant data(const QModelIndex & index, int role = Qt::DisplayRole) const;
Q_INVOKABLE void insert(int index, const Data &data);
Q_INVOKABLE void append(const Data &data);
Q_INVOKABLE void remove(int index);
Q_INVOKABLE void append(const QVariantMap map);

signals:
void countChanged(int arg);

private:
int count() const;

protected:
QHash<int, QByteArray> roleNames() const;

private:
QList<Data> m_list;
};

#endif // DATALISTMODEL_H