[Solved]Call function in script

[TheHawk]

I am trying to make an application which shows and let you edit some data. Currently, I am trying to integrate custom logic into the application where the user can execute custom code during runtime. I am using QJSEngine for this since QScriptEngine is deprecated.

I evaluate and run the script in my class CustomCode like so:

void CustomCode::on_button_clicked()
{
    QLabel *tb = new QLabel;
    ui->verticalLayout->addWidget(tb);
    QJSEngine myEngine;
    QJSValue scripttb = myEngine.newQObject(tb);

    QJSValue jsfunctionObj = myEngine.newQObject(&jsfunction);
    myEngine.globalObject().setProperty("jsfunction",jsfunctionObj);
    myEngine.globalObject().setProperty("tb",scripttb);


    QString fileName = "customlogic.qs";
    QFile scriptFile(fileName);
    if (!scriptFile.open(QIODevice::ReadOnly))
    {
    }// handle error

    QTextStream stream(&scriptFile);
    QString contents = stream.readAll();
    scriptFile.close();
    QJSValue result = myEngine.evaluate(contents, fileName);
    //QJSValue result = myEngine.evaluate("jsfunction.call_test();");
    if (result.isError())
    {
        qDebug() << "result: " << result.property("lineNumber").toInt() << ":" << result.toString();
    }
}

this was tested and works. Now, what I want to do is access functions in my mainwindow via the script and being able to call functions inside the script from my mainwindow (when a parameter changes the script has to process new data). Would it be possible to connect a signal/slot from mainwindow to a function inside the script and vice versa? (I think I have the calling of a function of mainwindow from inside the script working correctly but I would like to see my other options as well)

thanks!

[TheHawk]

I managed using the following additional lines in CustomCode

QString function = "test(1)";
QJSValue testfunction = myEngine.evaluate(function);
qDebug() << testfunction.toString();

With my script CustomLogic.qs looking like this:

function test(x)
{
    var a = "tested!";
    a = a + x.toString();
    return a;
}

Returns "tested!1" in the application output