gistfile1.txt

class SparkCloud : public QObject
{
    Q_OBJECT
public:
    explicit SparkCloud(QUrl apiurl, QObject *parent = 0);
    explicit SparkCloud(QObject *parent = 0);

    Q_INVOKABLE QList<QObject*> devices() { return (QList<QObject*>)(m_devices.values()); }
    Q_INVOKABLE QList<QString> device_ids() { return m_devices.keys(); }
    Q_INVOKABLE SparkDevice* device(QString id) { return m_devices[id]; }
...
}

class SparkDevice : public QObject
{
    Q_OBJECT
public:
    explicit SparkDevice(SparkCloud *cloud, QString id,
                         QString name, bool connected, QObject *parent = 0);
    explicit SparkDevice(QObject *parent = 0);

    Q_INVOKABLE QString id() { return m_id; }
    Q_INVOKABLE QString name() { return m_name; }
...
}

Page {
    id: page
    SilicaListView {
        id: listView
        model: SparkCloud.devices()
        anchors.fill: parent
        header: PageHeader {
            title: "Nested Page"
        }
        delegate: BackgroundItem {
            id: delegate
            Label {
                x: Theme.paddingLarge
                text: "Item " + index + " " + model.modelData.name()
                anchors.verticalCenter: parent.verticalCenter
                color: delegate.highlighted ? Theme.highlightColor : Theme.primaryColor
            }
            onClicked: console.log("Clicked " + index)
        }
        VerticalScrollDecorator {}
    }
}


main()
{
...
    view->rootContext()->setContextProperty("SparkCloud", &s);

    // We could support multiple clouds:
    qmlRegisterType<SparkCloud>("harbour.sparky.SparkCloud", 1, 0, "SparkCloud");
    qmlRegisterType<SparkDevice>("harbour.sparky.SparkCloud", 1, 0, "SparkDevice");
    qmlRegisterType<SparkFunction>("harbour.sparky.SparkCloud", 1, 0, "SparkFunction");
    qmlRegisterType<SparkVariable>("harbour.sparky.SparkCloud", 1, 0, "SparkVariable");

Q_INVOKABLE QList<QObject*> devices() { return (QList<QObject*>)(m_devices.values()); }

try

Q_INVOKABLE QList<QObject*> devices() { return static_cast<QList<QObject*> >(m_devices.values()); }