How to access QML Repeater delegate items in C++?

RAJEESHR

//// C++

void MyViewModel::doAccessRepeater()
{
    QObject* rootObject = QQmlApplicationEngine_->rootObjects().first();
    QObject* repeater = rootObject->findChild<QObject*>("SelectionButtonRepeater"); /// Returned a valid pointer
    QObject* item0 = repeater->findChild<QObject*>("SelectionViewRow0"); /// returns null
    ...
}

/// QML

Repeater {
            objectName: "SelectionButtonRepeater"
            model: (viewModel === null) ? "" : viewModel.list
            Text {
                width: parent.width
                height: 40
                objectName: ("SelectionViewRow" + index)
                text: modelData
            }
}

raven-worx

@fcarney
via the itemAt() method

// int count = QQmlProperty::read(repeaterObj, "count").toInt();
QQuickItem* item;
int index = 0;
QMetaObject::invokeMethod(repeaterObj, "itemAt", Qt::DirectConnection,
                          Q_RETURN_ARG(QQuickItem*, item),
                          Q_ARG(int, index));

If it throws a warning/error for QQuickItem* in the Q_RETURN_ARG, try with QObject* instead and cast it to a QQuickItem pointer using qobject_cast<QQuickItem*>(item)

fcarney

Use the signals for adding and removing items from the repeater:
https://doc.qt.io/qt-5/qml-qtquick-repeater.html#signals
Have it add those to a list in C++ via the Connections object.

raven-worx

@fcarney
via the itemAt() method

// int count = QQmlProperty::read(repeaterObj, "count").toInt();
QQuickItem* item;
int index = 0;
QMetaObject::invokeMethod(repeaterObj, "itemAt", Qt::DirectConnection,
                          Q_RETURN_ARG(QQuickItem*, item),
                          Q_ARG(int, index));

If it throws a warning/error for QQuickItem* in the Q_RETURN_ARG, try with QObject* instead and cast it to a QQuickItem pointer using qobject_cast<QQuickItem*>(item)

RAJEESHR

@raven-worx thanks. it works.!
Thank you all for ur supports.