import QtQuick
import QtQuick.Controls

Window {
    width: 640
    height: 480
    visible: true

    function testArray(array) {
        console.log('JS array: ' + array)
        test.byteArrayTest(array)
    }

    Component.onCompleted: {
        testArray([1, 2, 3])
        testArray(Array.from('456'))
    }
}

#pragma once
#include <QObject>
#include <QDebug>

class Test : public QObject
{
    Q_OBJECT

public:
    Q_INVOKABLE void byteArrayTest(const QByteArray &ba)
    {
        qDebug() << "QByteArray: " << ba;
    }
};