#pragma once
#include <QtGui/Widget.h>

class Bar : public QWidget {
    Q_OBJECT
    Q_PROPERTY(QString barProperty READ objectName)
public:
    Bar(QObject * = NULL) : QWidget() { setObjectName("BarObjectName"); }

signals:
    void propertyChanged();
};

class Foo : public QWidget {
    Q_OBJECT
    Q_PROPERTY(QWidget* bar READ bar NOTIFY propertyChanged)

public:
    Foo(QObject * = NULL) : QWidget() { setObjectName("FooObjectName"); }
    Bar* bar() { return &_bar; }

signals:
    void propertyChanged();

private:
    Bar _bar;
};