How to push values in a list of lists in Qt?

Question

In header file, I have this:

private:  
    Q_PROPERTY(QList <QList <QString> > dummy READ dummy WRITE setDummy NOTIFY dummyChanged)

    QList <QList <QString> > m_dummy;

public:  
    QList <QList <QString> > dummy() const
        {
            return m_dummy;
        }

public slots:
    void setDummy(QList <QList <QString> > arg)
        {
            if (m_dummy == arg)
                return;

            m_dummy = arg;
            emit dummyChanged(arg);
        }

signals:      
    void dummyChanged(QList <QList <QString> > arg);

In CPP file, in a function I have written:

QList <QString> p;
p.push_back("abc");
p.push_back("def");

QList <QString> q;
q.push_back("ghi");
q.push_back("jkl");

dummy.push_back (p);
dummy.push_back (q);

Compilation error I get is:

error: '((TablesAndChartsDatabaseQueries*)this)->TablesAndChartsDatabaseQueries::dummy' does not have class type dummy.push_back (p);

What point am I missing?

Answer 1

thomas_b pointed out the error correctly as follows:

I guess you should call m_dummy.push_back(p) and not dummy.push_back(p) because dummy is the method to get the "dummy".

I think, a better way to set the desired value would have been to call the setDummy function and let it do the job it is created for.

QList <QList <QString> > localDummy;
QList <QString> p;
p.push_back("abc");
p.push_back("def");

QList <QString> q;
q.push_back("ghi");
q.push_back("jkl");

localDummy.push_back (p);
localDummy.push_back (q);

setDummy (localDummy);