Russian Qt Forum

class MyProperty : public QObject
{
	Q_OBJECT
	Q_PROPERTY(bool show READ show WRITE setShow)
public:
	MyProperty(QObject *parent = 0);

	bool show() const;

public slots:
	void setShow(bool on);
signals:
	void showChanged(bool on);
}

class MyProperty : public QObject
{
	Q_OBJECT
	Q_PROPERTY(bool show READ show WRITE setShow)
public:
	MyProperty(QObject *parent = 0);
 
	bool show() const
        { return false; }
 
public slots:
	void setShow(bool on)
        { emit showChanged(on); }

signals:
	void showChanged(bool on);
};

class Cloud : public QObject, public QGraphicsItem
{
    Q_OBJECT
    Q_INTERFACES(QGraphicsItem)

    Q_PROPERTY(QString Name READ name WRITE setName DESIGNABLE true USER true)
    

public:
    Cloud(QGraphicsItem *parent = 0, QGraphicsScene *scene = 0);
    ~Cloud();

	QString name() const {return m_name;}
	void setName(const QString& name);

    QRectF boundingRect() const;
    void paint(QPainter *, const QStyleOptionGraphicsItem *, QWidget *);
    QPainterPath shape() const;

private:
	QString		m_name;

};
...
//применение
	Cloud *cloud = new Cloud();
	cloud->Name="myName";