Help Newbie Subclass QStringList

[avanta27]

My first post here!

I am a newbie to Qt and quite newbie to C++. What I am trying to do is to subclass QStringList, but I don't make it. This is what I have tried out so far:

class MyStringList : public QStringList
{
    Q_OBJECT
 
public:
    MyStringList();
 
 
protected:
    int numbers_pos[100];
 
public Q_SLOTS:
    void set_number(int pos, int line_number);
    int get_number(int pos);
};

class MyStringList : public QStringList
{
    Q_OBJECT

public:
    MyStringList();


protected:
    int numbers_pos[100];

public Q_SLOTS:
    void set_number(int pos, int line_number);
    int get_number(int pos);
};

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I'm getting errors that:

error: invalid static_cast from type 'QObject*' to type 'MyStringList*'

error: invalid static_cast from type 'QObject*' to type 'MyStringList*'

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and I am quite sure that it has to do with the Q_OBJECT macro. However, it does not let me remove it.

Any guesses?

Thanks a lot !