#ifndef CONTACT_H #define CONTACT_H #include <QObject> #include <QMetaType> #include <QString> #include <QDataStream> struct Contact { QString name; QString phone; QString address; }; Q_DECLARE_METATYPE(Contact); QDataStream &operator<<(QDataStream &out,const Contact &c); QDataStream &operator>>(QDataStream &in, Contact &c ); #endif