Update Label Text with QML method called from C++

marcosbontempo

Hello,

I wrote a QML function which only updates a label text:

property alias textchange: label1

function myQmlFunction(msg) {
    item.textchange.text = msg
    console.log(item.textchange.text)
    return
}
Label {
        id: label1
        objectName: "labelreceived"
        x: 23
        y: 71
        text: "received"
}

When the myQmlFunction is called from an onClicked button event it works. But it doesn't when invoked from C++ method. It reads correctly the text object but can't write. It looks like the function only works when called from a QML code.

I can assure that there is no problem to invoke the function from C++, it runs and logs at console. The problem is that the text label isn't updated in the screen.

Is there a issue about updating a QML component property from C++?
Here is the C++ code:

QQuickView view;
view.setSource(QUrl::fromLocalFile("qml/sisc2/main.qml"));
QObject *object = view.rootObject();
QMetaObject::invokeMethod(object, "myQmlFunction", Q_ARG(QVariant, "hello"));

Any tip will be very helpful.
Thanks.

p3c0

Hi @marcosbontempo
Is this the only code ? I see no problem in above code.

marcosbontempo

Hi @p3c0,
Thanks for answering. I found out my mistake. I created a new QQuickView component in a class, different from the main viewer. So, when I changed a component property, I was changing a the property of a component from another viewer I've created.

Sorry for the the dummie issue!

p3c0

@marcosbontempo That's fine.. It happens all the time :)