QML Application exit errors

Vasilevs

Greetings!
I’ve stuck with problem creating QML application for Linux. Use Qt 5.11.
The problem started, after I created utility class in QML for more convenient dynamical object creation.

ComponentCreator.qml

    function createObject(path, parent)
    {
        let resultObject = undefined

        const component = Qt.createComponent(path, Component.PreferSynchronous, parent);

        switch (component.status)
        {
            case Component.Ready:
                return component.createObject(parent);
            case Component.Error:
                console.warn(qsTr("Component creation error:"), component.errorString());
                return undefined
            default:
                return undefined
        }
    }

    function createInputDataField(parent)
    {
        return createObject("qrc:/qml/Components/Input/InputDataField.qml", parent)
    }

When close my QML app, I received this horrible stack trace output:
alt text

I thought, that problem could be connected with destruction of QQmlApplicationEngine. So I decided to wait until engine will be destroyed when closing app. It doesn’t really help, but console output became like this:

This looks like parent destroyed, but created item - not.

The thing is, when I place creation method in file, where object should be created, there are no more errors. I can only suggest, that there is a problem with contexts, but in what way - have no idea.

I’ll be very grateful, if someone can give any ideas what causes that behavior.
Thanks!

ODБOï

hi
@Vasilevs said in QML Application exit errors:

I created utility class in QML for more convenient dynamical object creation.

    const component = Qt.createComponent(path, Component.PreferSynchronous, parent);
    switch (component.status)
    {

try to connect a function to your component's statusChanged signal instead of checking the status just after the creation, see here https://doc.qt.io/qt-5/qtqml-javascript-dynamicobjectcreation.html

@Vasilevs said in QML Application exit errors:

This looks like parent destroyed, but created item - not.

you can verify it with the debugger