Serializing a Qobject

[erfan]

Hi,
i want to serialize my costumes classes ,
but QDataStream doesn't have any method for that
and it's operation "<<" doesn't have any QObject or anything else.
how can i do this?
please help me!!

[droneone]

You must create your own streaming operators for the class - otherwise there's no ability for another body of code to automatically determine how to construct/de-construct your class.
E.g.:

Q_DECLARE_METATYPE(MyClass)
 
inline QDataStream& operator<<(QdataStream& out, const MyClass& in) {
 
  out << quint32(in.foo());
  out << quint32(in.bar());
 
  return out;
}
 
inline QDataStream& operator>>(QdataStream& in, const MyClass& out) {
 
 quint32 foo;
 quint32 bar;
  in >> foo;
  in >> bar;
 
  out.setFoo(foo);
  out.setBar(bar);
 
  return in;
}

Q_DECLARE_METATYPE(MyClass)

inline QDataStream& operator<<(QdataStream& out, const MyClass& in) {

  out << quint32(in.foo());
  out << quint32(in.bar());
  
  return out;
}

inline QDataStream& operator>>(QdataStream& in, const MyClass& out) {

 quint32 foo;
 quint32 bar;
  in >> foo;
  in >> bar;

  out.setFoo(foo);
  out.setBar(bar);
  
  return in;
}

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See also: http://stackoverflow.com/questions/2...zation-with-qt