Interacting with delegated QML Component in Repeater from C++

Question

I can't access to delegated QML Component in Repeater from C++. Please find codes below. Thanks.

main.cpp

#include <QApplication>
#include <QDebug>
#include <QQuickView>
#include <QQuickItem>

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);
    QQuickView view;
    view.setSource(QUrl(QStringLiteral("qrc:/Main.qml")));
    view.show();
    QQuickItem *object = view.rootObject();
    QObject *rectangle = object->findChild<QObject*>("rect1");

    if (!rectangle)
    qDebug() << "MyError: rectangle was not found";

    app.exec();
}

Main.qml

import QtQuick 2.4

Row {
    Repeater {
        model: 3
        Rectangle {
            width: 50; height: 50
            color: index %2 ? "black" : "white"
            objectName: "rect" + index
        }
    }
}

Console output:

MyError: rectangle was not found

Answer 1

I have implemented own recursive function template 'findChild' function in C++.`

template <class T>
SearchType findChild(QQuickItem* object, const QString& objectName)
{
        QList<QQuickItem*> children = object->childItems();
        foreach (QQuickItem* item, children)
        {
            if (QQmlProperty::read(item, "objectName").toString() == objectName)
                return item;

            T child = findChild<QQuickItem*>(item, objectName);

            if (child)
                return child;
    }
    return nullptr;
}

And call it instead a default function.

QQuickItem *object = view.rootObject();
QQuickItem *rectangle = findChild<QQuickItem*>(object, "rect1");

if (rectangle)
{
    qDebug() << rectangle;
    qDebug() << rectangle->objectName();
} 

And get output:

QQuickRectangle(0x2222b40, name="rect1", parent=0x22245b0, geometry=50,0 50x50)
"rect1"