Simplified problem about enums and QVariants.

[wysota]

I don't know if that helps you in any way but here goes:

class Cls : public QObject {
  Q_OBJECT
public:   
  enum X {
    A, B = 13, C
  }
  Q_ENUMS(X);
 
};
 
Q_DECLARE_METATYPE(Cls::X)
 
#include "main.moc"
 
int main(){
 
  int xMT = qRegisterMetaType<Cls::X>("Cls::X");
  qDebug() << "Type id:" << xMT;
  QVariant v = qVariantFromValue(Cls::B);
  qDebug() << v;
  Cls::X x = v.value<Cls::X>();
  qDebug() << x;
  QMetaEnum en = Cls::staticMetaObject.enumerator(0);
  qDebug() << en.value(0) << en.value(1) << en.value(2);
  qDebug() << "Key for Cls::B is:" << en.valueToKey(Cls::B);
  qDebug() << "Key for v is:" << en.valueToKey(v.value<Cls::X>());
  qDebug() << "Key for v is:" << en.valueToKey(*(int*)v.data());
  return 0;
}

class Cls : public QObject {
  Q_OBJECT
public:   
  enum X {
    A, B = 13, C
  }
  Q_ENUMS(X);
  
};
  
Q_DECLARE_METATYPE(Cls::X)

#include "main.moc"

int main(){

  int xMT = qRegisterMetaType<Cls::X>("Cls::X");
  qDebug() << "Type id:" << xMT;
  QVariant v = qVariantFromValue(Cls::B);
  qDebug() << v;
  Cls::X x = v.value<Cls::X>();
  qDebug() << x;
  QMetaEnum en = Cls::staticMetaObject.enumerator(0);
  qDebug() << en.value(0) << en.value(1) << en.value(2);
  qDebug() << "Key for Cls::B is:" << en.valueToKey(Cls::B);
  qDebug() << "Key for v is:" << en.valueToKey(v.value<Cls::X>());
  qDebug() << "Key for v is:" << en.valueToKey(*(int*)v.data());
  return 0;
}

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and the output:

Type id: 258 
QVariant(Cls::X, ) 
13 
0 13 14 
Key for Cls::B is: B
Key for v is: B
Key for v is: B

Type id: 258 
QVariant(Cls::X, ) 
13 
0 13 14 
Key for Cls::B is: B
Key for v is: B
Key for v is: B

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