[SOLVED] Q_DECLARE_METATYPE and Qt containers
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It's a simple question but not evident from the docs at http://qt-project.org/doc/qt-5/qmetatype.html#Q_DECLARE_METATYPE
Let's say I have a class called MyClass and I want to use QList<MyClass> with QVariant.
Do I need to use only
@
Q_DECLARE_METATYPE(MyClass)
@or
@
Q_DECLARE_METATYPE(QList<MyClass>)
@
(or a typedef of the above if I can't use templates).
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Hi,
IIRC, Qt has built-in support for that. But nothing beats a test :)
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Stay tuned :)
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I'm wondering also. Should be mentioned in the documentation.
So if I want to use MyClass in a QList and if I do that:
@
Q_DECLARE_METATYPE(MyClass)
@I've got a compile error:
@error C2039: 'qt_metatype_id' : is not a member of 'QMetaTypeId<T>'@But
- If i do that
@
Q_DECLARE_METATYPE(MyClass)
Q_DECLARE_METATYPE(QList<MyClass>)
@
No compile error.
Maybe a specific include is missing or the QList declare is the only thing to do?
- If i do that
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Tested my code and looks like it works even without specifically using the Q_DECLARE_METATYPE for the QList.
@r1z1 I'm not sure about your problem. Maybe you want to open another thread and post exactly where you are putting the Q_DECLARE_METATYPE line.
