How to convert enum to QString?

Question

I am trying to use the Qt reflection for converting enum to QString.

Here is the part of code:

class ModelApple {     Q_GADGET     Q_ENUMS(AppleType) public:     enum AppleType {       Big,       Small     } } 

And here is i trying to do:

convertEnumToQString(ModelApple::Big) 

Return "Big"

Is this possible? If you have any idea about convertEnumToQString, please share it

Answer 1

You need to use Q_ENUM macro, which registers an enum type with the meta-object system.

enum AppleType {   Big,   Small }; Q_ENUM(AppleType) 

And now you can use the QMetaEnum class to access meta-data about an enumerator.

QMetaEnum metaEnum = QMetaEnum::fromType<ModelApple::AppleType>(); qDebug() << metaEnum.valueToKey(ModelApple::Big); 

---

Here is a generic template for such utility:

template<typename QEnum> std::string QtEnumToString (const QEnum value) {   return std::string(QMetaEnum::fromType<QEnum>().valueToKey(value)); }