Question On Usage of the library. about qtjsonserializer HOT 2 CLOSED

This is not possible out of the box, as dynamic allocation is generally not supported by the library. The only exceptions are QObject* and gadgets.

The reason is, that for dynamic allocation, there is no support in QVariant - which would be required for this. Gadgets and Objects have their own custom way of creating pointer instances.

I would recommend you to instead create helper properties that take values instead of pointers:

class MyClass
{
    Q_PROPERTY(QList<TestObject*>* objListPtr MEMBER _objListPtr NOTIFY objListPtrChanged STORED false)
    Q_PROPERTY(QList<TestObject*> objList READ getObjList WRITE setObjList NOTIFY objListChanged)

private:
    QList<TestObject*> *_objListPtr;

    QList<TestObject*> getObjList() const {
        return _objListPtr ? *_objListPtr : QList<TestObject*>{};
    }

    void setObjList(QList<TestObject*> value) {
        if (_objListPtr)
            delete _objListPtr;
        _objListPtr = new QList<TestObject*>{std::move(value)};
        emit objListChanged(*_objListPtr);
        emit objListPtrChanged(_objListPtr);
    }
};

This works as expected, unless you want to handle the nullptr case correctly (i.e. have a null JSON/CBOR value if _objListPtr == nullptr). In that case you would have to implement a custom type converter instead. See QtJsonSerializer::TypeConverter for how to create one.

from qtjsonserializer.

That will work. Thank you!

from qtjsonserializer.