Hello

I experience issues when running my application

I have personnal object (ChannelObjectSerializable) which I want to save status.

Here is part of the code which will help :

After the sync() :


Qt Code: 
  1. QVariant::load: unable to load type 257. 
  2. QVariant::save: unable to save type 257. 
  3. QVariant::load: unable to load type 257. 
  4. ##################### 
  5. # Channel : 
  6. # # 
  7. # # 
  8. # # 
  9. # # 
  10. # # 
  11. #####################
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Avec :

ChannelObjectSerilizable.h
Qt Code: 
  1. private: 
  2. friend QDataStream & operator << (QDataStream &, const ChannelObjectSerializable &); 
  3. friend QDataStream & operator >> (QDataStream &, ChannelObjectSerializable &); 
  4. }; 
  5.  
  6. Q_DECLARE_METATYPE(ChannelObjectSerializable) 
  7. QDataStream & operator << (QDataStream & out, const ChannelObjectSerializable & Valeur); 
  8. QDataStream & operator >> (QDataStream & in, ChannelObjectSerializable & Valeur);
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ChannelObjectSerializable.cpp :
Qt Code: 
  1. void ChannelObjectSerializable::initChannelSystem() 
  2. { 
  3. qRegisterMetaTypeStreamOperators("ChannelObject"); 
  4. qMetaTypeId(); 
  5. } 
  6.  
  7. QDataStream & operator<<(QDataStream & out, const ChannelObjectSerializable & Valeur) 
  8. { 
  9. QString tmp; 
  10. out << tmp.fromStdString(Valeur.nom) 
  11. << tmp.fromStdString(Valeur.lastUpdate) 
  12. << tmp.fromStdString(Valeur.description) 
  13. << tmp.fromStdString(Valeur.lien) 
  14. << tmp.fromStdString(Valeur.link); 
  15.  
  16. return out; 
  17. } 
  18.  
  19. QDataStream & operator>>(QDataStream & in, ChannelObjectSerializable & Valeur) 
  20. { 
  21. QString tmp; 
  22. in >> tmp; 
  23. Valeur.nom = tmp.toStdString(); 
  24. in >> tmp; 
  25. Valeur.lastUpdate = tmp.toStdString(); 
  26. in >> tmp; 
  27. Valeur.description = tmp.toStdString(); 
  28. in >> tmp; 
  29. Valeur.lien = tmp.toStdString(); 
  30. in >> tmp; 
  31. Valeur.link = tmp.toStdString(); 
  32.  
  33. return in; 
  34. }
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main.cpp
Qt Code: 
  1. ChannelObjectSerializable p = ChannelObjectSerializable(newRSS); 
  2. p.initChannelSystem(); 
  3. QSettings fichier_ecrire("Test.ini", QSettings::IniFormat); 
  4. fichier_ecrire.setValue("channel", qVariantFromValue(p)); 
  5. p.printDonnees(); 
  6. fichier_ecrire.sync(); 
  7.  
  8. ChannelObjectSerializable copie; 
  9. QSettings fichier_lire("Test.ini", QSettings::IniFormat); 
  10. copie = fichier_lire.value("channel", qVariantFromValue(ChannelObjectSerializable())).value(); 
  11. copie.printDonnees();
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After loading the object, it's empty