Well, finally they finally got it !!! There was an opportunity to declare enums immediately in QML without dancing with C ++. How to add your enumerations to QML through C ++ I described in this article . In fact, there is nothing complicated on the part of C ++, just need to write a class inherited from QObject, and register through Q_ENUM or Q_ENUMS your enumeration in this class, and register the class via qmlRegisterType.

Q_ENUM was added to Qt 5.5 to replace Q_ENUMS , and it allows QMetaEnum to be compiled at compile time using QMetaEnum::fromType<T>. Such enumerations are now automatically registered as metatypes and can be converted to strings in QVariant or typed as a string using qDebug() .

However, according to my observations when registering transfers through Q_ENUM in QML files in Qt Creator, the code completion for these enumerations does not work, whereas when registering through Q_ENUMS everything works.

But now you can write an enumeration immediately in your custom QML type.

For example, let's create this type of object in QML.

MyText.qml

import QtQuick 2.10

Text {
    enum MyEnum {
        First = 10,
        Second
    }

    anchors.centerIn: parent
}

In addition to classes, C ++ supports enumerations. In the current standard, C ++ is supported as enumeration without the scope that was introduced in earlier versions of C ++, as well as C.

enum ColorTypes {
    Green,
    Yellow,
    Red
};

So enumerations with scope

enum class ColorTypes {
    Green,
    Yellow,
    Red
};