Qt 5.6 | Qt QML | Extending QML - Property Value Source Example | birthdayparty.h Example File

Qt 5.6.2 Reference Documentation

# birthdayparty.h Example File

referenceexamples/valuesource/birthdayparty.h

      /****************************************************************************
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      #ifndef BIRTHDAYPARTY_H
      #define BIRTHDAYPARTY_H

      #include <QObject>
      #include <QDate>
      #include <QDebug>
      #include <qqml.h>
      #include "person.h"

      class BirthdayPartyAttached : public QObject
      {
          Q_OBJECT
          Q_PROPERTY(QDate rsvp READ rsvp WRITE setRsvp)
      public:
          BirthdayPartyAttached(QObject *object);

          QDate rsvp() const;
          void setRsvp(const QDate &);

      private:
          QDate m_rsvp;
      };

      class BirthdayParty : public QObject
      {
          Q_OBJECT
          Q_PROPERTY(Person *host READ host WRITE setHost)
          Q_PROPERTY(QQmlListProperty<Person> guests READ guests)
      // ![0]
          Q_PROPERTY(QString announcement READ announcement WRITE setAnnouncement)
      // ![0]
          Q_CLASSINFO("DefaultProperty", "guests")
      public:
          BirthdayParty(QObject *parent = 0);

          Person *host() const;
          void setHost(Person *);

          QQmlListProperty<Person> guests();
          int guestCount() const;
          Person *guest(int) const;

          QString announcement() const;
          void setAnnouncement(const QString &);

          static BirthdayPartyAttached *qmlAttachedProperties(QObject *);

          void startParty();
      signals:
          void partyStarted(const QTime &time);

      private:
          Person *m_host;
          QList<Person *> m_guests;
      };
      QML_DECLARE_TYPEINFO(BirthdayParty, QML_HAS_ATTACHED_PROPERTIES)

      #endif // BIRTHDAYPARTY_H