如何在将c++中的Qlist 注册到qml中并使用

因为经常需要将c++中数据传递到qml中使用，而c++中数据多是以Qlist

class Person : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
    Q_PROPERTY(int shoeSize READ shoeSize WRITE setShoeSize NOTIFY shoeSizeChanged)
public:
    Person(QObject *parent = 0);
    ~Person();
    QString name()const;
    void setName(const QString name);
    int shoeSize()const;
    void setShoeSize(const int shoeSize);
signals:
    void nameChanged();
    void shoeSizeChanged();
private:
    QString m_name;
    int m_shoeSize;
};
class BirthdayParty :public QObject
{
    Q_OBJECT
    Q_PROPERTY(QQmlListProperty<Person> guests READ guests)
public:
    BirthdayParty(QObject *parent = 0);
    ~BirthdayParty();
    QQmlListProperty<Person> guests();

    Q_INVOKABLE void appendData();
    Q_INVOKABLE int guestsCount()const;
private:
    QList<Person*> m_guests;//宾客
};

2、在main文件中注册存储对象和数据对象

int main(int argc, char *argv[])
{
    QGuiApplication app(argc, argv);
    qmlRegisterType<BirthdayParty>("Birthday",1,0,"Birthday");
    qmlRegisterType<Person>("Person",1,0,"Person");

    QQmlApplicationEngine engine;
    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    if (engine.rootObjects().isEmpty())
        return -1;

    return app.exec();
}

3、在qml中的使用方式为

import QtQuick 2.6
import QtQuick.Window 2.2
import Birthday 1.0
import Person 1.0

Window {
    id: root;
    visible: true
    width: 640
    height: 480
    title: qsTr("Hello World")
    property int count: 0;

    MouseArea {
        anchors.fill: parent
        onClicked: {
            count = 0;
            if(birthday.guests.length > 0)//这里主要测试是否可以修改该数组中的数据
            {
                console.debug("数据变了吗 name = ",birthday.guests[0].name,",大小 = ",birthday.guests[0].shoeSize);
            }
            birthday.appendData();
            count = birthday.guestsCount();
        }
    }

    Rectangle
    {
        width: 300;
        height: 300;
        color: "lightblue";
        anchors.centerIn: parent;
        ListView
        {
            id: list;
            anchors.fill: parent;
            model: root.count;
            delegate: com;
        }
    }

    Birthday
    {
        id:birthday;
    }

    Component
    {
        id:com;
        Column
        {
            id:col;
            width: list.width;
            spacing: 10;
            property Person person: null;

            Component.onCompleted:
            {
                person = birthday.guests[index];
                person.name = "李四";
                person.shoeSize = 100;
                nameTxt.text = person.name;
                shoeSizeTxt.text = person.shoeSize;
            }

            Text
            {
                id:nameTxt;
            }

            Text
            {
                id:shoeSizeTxt;
            }
        }
    }
}

4、至此，可以方便的使用数据了，ok~