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happybirthday.h Example File
declarative/extending/binding/happybirthday.h

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 #ifndef HAPPYBIRTHDAY_H
 #define HAPPYBIRTHDAY_H

 #include <QDeclarativePropertyValueSource>
 #include <QDeclarativeProperty>
 #include <qdeclarative.h>

 #include <QStringList>

 class HappyBirthday : public QObject, public QDeclarativePropertyValueSource
 {
 Q_OBJECT
 Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged)
 public:
     HappyBirthday(QObject *parent = 0);

     virtual void setTarget(const QDeclarativeProperty &);

     QString name() const;
     void setName(const QString &);

 private slots:
     void advance();

 signals:
     void nameChanged();
 private:
     int m_line;
     QStringList m_lyrics;
     QDeclarativeProperty m_target;
     QString m_name;
 };
 QML_DECLARE_TYPE(HappyBirthday);

 #endif // HAPPYBIRTHDAY_H


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Qt 4.7.0