Let's perform another small exercise by implementing functions that are required to use QDataStream to serialize the same simple structure that contains the player information that we used for text streaming:
struct Player {
QString name;
qint64 experience;
QPoint position;
char direction;
};For this, two functions need to be implemented, both returning a QDataStream reference that was taken earlier as an argument to the call. Apart from the stream itself, the serialization operator accepts a constant reference to the class that is being saved. The most simple implementation just streams each member into the stream and returns the stream afterwards:
QDataStream& operator<<(QDataStream &stream, const Player &p) {
stream << p.name;
stream << p.experience;
stream << p.position;
stream << p.direction;
return stream;
}Complementary to this, deserializing is done by implementing a redirection...