error: use of deleted function 'QStringListModel& QStringListModel::operator=(const QStringListModel&)'

[c0ntrarian]

Hi all, I have been spending 3 weeks trying to get a basic app off the ground learning QT and have been pulling my hair out over this. I am trying to understand why I cannot set a Q_PROPERTY to a QStringListModel. Every time I setup the methods for this property I always receive this error from the compiler:

/home/drew/build-GEO-Desktop_Qt_6_2_0_GCC_64bit-Debug/GEO_autogen/EWIEGA46WW/moc_serial.cpp:120: error: use of deleted function 'QStringListModel& QStringListModel::operator=(const QStringListModel&)'
error: use of deleted function 'QStringListModel& QStringListModel::operator=(const QStringListModel&)'
120 | case 1: reinterpret_cast< QStringListModel>(_v) = _t->comModel(); break;
| ^

public:    
    explicit Serial(QObject *parent = nullptr);
    Q_PROPERTY(QStringListModel comModel READ comModel NOTIFY n_comModel)
    QStringListModel comModel();
signals:
    void comboBoxSerialPortsChanged();
    void n_comModel();

#ifndef QT_NO_PROPERTIES
    else if (_c == QMetaObject::ReadProperty) {
        auto *_t = static_cast<Serial *>(_o);
        (void)_t;
        void *_v = _a[0];
        switch (_id) {
        case 0: *reinterpret_cast< QList<QSerialPortInfo>*>(_v) = _t->comboBoxSerialPorts(); break;
        case 1: *reinterpret_cast< QStringListModel*>(_v) = _t->comModel(); break;
        default: break;
        }
    } else if (_c == QMetaObject::WriteProperty) {
    } else if (_c == QMetaObject::ResetProperty) {
    } else if (_c == QMetaObject::BindableProperty) {
    }

What exactly does this mean? How can I go about resolving this? Is this the best way to provide QML variables to use?

[SGaist]

Hi,

Because you can't copy QObject based classes. You should allocate your model on the heap and your property should return a pointer to a QStringListModel.