Qt How to register enum class in QML without QObject class

Question

EnumClasses.h

    #ifndef ENUMCLASSES_H
    #define ENUMCLASSES_H
    
    #include <QObject>
    
    namespace mynamespace {
    
    enum class Fruit : int
    {
        Apple,
        Banana,
        Orange
    };
    Q_ENUM(Fruit)
    
    }
    
    #endif // ENUMCLASSES_H

appears Warning message

EnumClasses.h:14:1: error: 'friend' used outside of class
qobjectdefs.h:116:30: note: expanded from macro 'Q_ENUM'
qobjectdefs.h:114:5: note: expanded from macro 'Q_ENUM_IMPL'

If I use Q_ENUMS (deprecated) Warning appears

/home/Qt/EnumClasses.h:14:1: Use Q_ENUM instead of
Q_ENUMS

What I need do for register enum class in QML?

you probably speak about [Q_GADGET](https://doc.qt.io/qt-6/qobject.html#Q_GADGET) — folibis, Jan 26 '23 at 13:21
I mean about https://doc.qt.io/qt-5/qtqml-cppintegration-data.html#enumeration-types — Евгений Дружинин, Jan 26 '23 at 13:28

score 2 · Answer 1 · answered Jan 26 '23 at 14:33

2

like this:

namespace mynamespace {
Q_NAMESPACE

enum class Fruit : int
{
    Apple,
    Banana,
    Orange
};
Q_ENUM_NS(Fruit)
}

See: https://doc.qt.io/qt-5/qqmlengine.html#qmlRegisterUncreatableMetaObject

answered Jan 26 '23 at 14:33

Waqar

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Qt How to register enum class in QML without QObject class

1 Answers1