QML update when c++ object value changed using Q_PROPERTY and NOTIFY

[Inso]

Hi,

I have read a lot about this before posting here, sadly it seems it mostly uses a complete different approach.

I have a digital clock in C++ (kicked a lot out to keep it simple, so only seconds here):

digiclock.h :

#ifndef DIGICLOCK_H
#define DIGICLOCK_H

#include <QObject>

class digiclock : public QObject
{
    Q_OBJECT   
    Q_PROPERTY (QString actualTimeSec READ actuTimeSec WRITE setActuTimeSec NOTIFY timeWasSetSec)

public:
    explicit digiclock(QWidget *parent = nullptr);

    QString actuTimeSec();

private:
    void setActuTimeSec(QString);

    QString m_actualTimeSec;

private slots:

signals:
    void timeWasSetSec(QString);
};

#endif

and the digiclock.cpp:

#include "digiclock.h"

#include <QTime>
#include <QTimer>

digiclock::digiclock(QWidget *parent)
{

    QTimer *timer = new QTimer(this);
    connect(timer, &QTimer::timeout, this, &digiclock::getTime);
    timer->start(1000);
    getTime();
}

void digiclock::getTime() {
    QTime time = QTime::currentTime();
    setActuTimeSec(time.toString("ss"));
}

QString digiclock::actuTimeSec()
{
    return m_actualTimeSec;
}

void digiclock::setActuTimeSec(QString timeSec)
{
    m_actualTimeSec = timeSec;    
    emit timeWasSetSec(timeSec);}

every second, the new time is set to m_actualTimeSec. This update I need within my QML file.

my main.cpp:

#include <QGuiApplication>
#include <QQmlApplicationEngine>

#include "digiclock.h"

int main(int argc, char *argv[])
{    QCoreApplication::setAttribute(Qt::AA_DisableHighDpiScaling);

    QGuiApplication app(argc, argv);

    QQmlApplicationEngine engine;
    
    qmlRegisterType<digiclock>("DigitalClock", 1, 0, "Clock");

    engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
    if (engine.rootObjects().isEmpty())
        return -1;

    return app.exec();
}

and the main.qml:

import QtQuick 2.9
import QtQuick.Controls 2.4
import QtQuick.Layouts 1.3
import QtQuick.Controls.Material 2.3

import DigitalClock 1.0

ApplicationWindow {
    id:root
    visible: true
    width: 800
    height: 480
    color: "#babdb6"
    title: qsTr("Welcome")
    //visibility: "FullScreen"

    Clock{
        id: myClock
    }

        Text {
            id: timeSec
            x: 305
            y: 51
            text: qsTr(myClock.actualTimeSec)
            font.pixelSize: 12
        }
    }    
}

I now have the ID myClock, which is an object of C++ - digiclock, created on load of the QML. I can perfectly set the actual time. Problem is, I dunno how to connect to the signal-slot of my digiclock-object from the QML files, so the seconds are updated every second.
I have played around with signal - word and tried to implement it within the text field, with no success. What I need somewhere is the incoming signal to update timeSec.text, preferred within the QML directly and not also adding the signal within the main.cpp as shown on other examples.

[Inso]

dunno why it bugged, now it works.