Moc generates uncompilable code

I have a class defined inside a namespace which has properties of the type from the same namespace:

Code:

---

// inside the included file
Q_DECLARE_METATYPE(Core::Vector)
 
// inside particle.h
namespace Core {
class Particle {
    Q_OBJECT
    Q_PROPERTY(Core::Vector position READ position WRITE setPosition)
public:
    ....
};
}

---

But when trying to compile I'm getting the following error:
particle.moc|43| error: ‘staticMetaObject’ is not a member of ‘Core’

Inside particle.moc there is the following fragment:

Code:

---

static const QMetaObject *qt_meta_extradata_Core__Particle[] = {
        &Core::staticMetaObject,0
};
 
const QMetaObject Core::Particle::staticMetaObject = {
    { &Body::staticMetaObject, qt_meta_stringdata_Core__Particle,
      qt_meta_data_Core__Particle, qt_meta_extradata_Core__Particle }
};

---

This looks like wrong code. I have no idea why moc generates it.
Thanks in advance for any help.

After some more experiments I've found that the problem appears when Core::Vector and Q_DECLARE_METATYPE(Core::Vector) are in different files. When they are in the same file everything compiles OK.

Is this expected behaviour ? It seems that documentation says nothing about it.

Quote:

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Originally Posted by Vladimir

It seems that documentation says nothing about it.

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Not quite, it says:

Quote:

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Ideally, this macro should be placed below the declaration of the class or struct. If that is not possible, it can be put in a private header file which has to be included every time that type is used in a QVariant.

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I guess the problem is that the code generated by moc doesn't include that other header file.

Quote:

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Originally Posted by jacek

Not quite, it says:

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Yes, I've missed this. Thanks for pointing me to it.

Quote:

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Originally Posted by jacek

I guess the problem is that the code generated by moc doesn't include that other header file.

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No, .moc file is included in .cc file which includes all required headers. Moc generates a reference to Core::staticMetaObjec where it obviously should be Core::Particle::staticMetaObject. Very strange that it is related to Q_PROPERTY.

My original goal was to put Q_DECLARE_METATYPE into different header because I want to have a subset of my API which is independent of Qt.

class Particle is not derived from QObject.

Quote:

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Originally Posted by ChristianEhrlicher

class Particle is not derived from QObject.

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No, I's derived from QObject.

Quote:

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Originally Posted by Vladimir

No, I's derived from QObject.

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Where?

Code:

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namespace Core {
class Particle {
    Q_OBJECT
    Q_PROPERTY(Core::Vector position READ position WRITE setPosition)
public:
    ....
};
}

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