Extending QML with a C++ class in a namespace

From Qt Wiki
Jump to: navigation, search

En Ar Bg De El Es Fa Fi Fr Hi Hu It Ja Kn Ko Ms Nl Pl Pt Ru Sq Th Tr Uk Zh

The example code below shows how you can extend QML with a C++ class in a custom namespace.

main.cpp

#include <QtGui>
#include <QtDeclarative>

namespace MyNamespace {

class Person : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ name WRITE setName)
    Q_PROPERTY(int shoeSize READ shoeSize WRITE setShoeSize)
public:
    Person() {}
    QString name() const { return m_name; }
    void setName(const QString& n) { m_name = n; }
    int shoeSize() const { return m_size; }
    void setShoeSize(int s) { m_size = s; }
private:
    QString m_name;
    int m_size;
};

} // MyNamespace

#include "main.moc"

using namespace MyNamespace;

int main(int argc, char** argv) {
    QApplication app(argc, argv);
    qmlRegisterType<Person>("People", 1, 0, "Person");
    MyNamespace::Person myObj;
    QDeclarativeView view;
    view.rootContext()->setContextProperty("rootItem", (Person *)&myObj);
    view.setSource(QUrl::fromLocalFile("main.qml"));
    view.resize(200,100);
    view.show();
    return app.exec();
}

main.qml

import QtQuick 1.0
import People 1.0

Text {
    text: myPerson.name

    Person {
        id: myPerson
        name: "Sigurd"
        shoeSize: 24
    }
}