Expose field of a sub-class to QML

[nick85]

Hi,

I have to expose into a QML widget fields from a set of nested classes like in the follows example:

class A : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ getName)
 
public:
    ...
    QString getName()
 
private:
    QString _name;
 
}
 
 
class B : public A
{
        Q_OBJECT
        Q_PROPERTY(int value READ getValue)
 
public:
    B(int val);
    int getValue();
 
private:
    int _value;
}
 
 
// in another c
Q_INVOKABLE QObject * getObjectOfTypeB()
{
        return new B(1);
}

class A : public QObject
{
    Q_OBJECT
    Q_PROPERTY(QString name READ getName)

public:
    ...
    QString getName()

private:
    QString _name;

}


class B : public A
{
        Q_OBJECT
        Q_PROPERTY(int value READ getValue)

public:
    B(int val);
    int getValue();

private:
    int _value;
}


// in another c
Q_INVOKABLE QObject * getObjectOfTypeB()
{
        return new B(1);
}

To copy to clipboard, switch view to plain text mode 

in QML:

var tmp = myModel.getObjectOfTypeB();
 
tmp.name   // works
tmp.value  // undefined

var tmp = myModel.getObjectOfTypeB();

tmp.name   // works
tmp.value  // undefined

To copy to clipboard, switch view to plain text mode 

The filed from the top class works, while the field form the sub-class B is undefined.
What's wrong?

Thank you

[jryannel]

So far, everything looks good for me. Can you show the code where myModel is registered and instantiated?

[nick85]

Sorry code was wrong.
In original cosa is missing a "Q_OBJECT" macro.