Hello!

I have created a fresh Qt-Quick-Application with QtCreator with the following main.qml:

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import QtQuick 1.1
import org.kde.plasma.components 0.1 as PlasmaComponents

Rectangle {
    id: app

    PlasmaComponents.Label {
        anchors.fill: parent

        text: "Hallo Welt"
    }
}

When I execute my succesfully compiled program, I get the following error:

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QObject::connect: Cannot connect Plasma::EffectWatcher::destroyed() to (null)::_k_x11FilterDestroyed()

What am I doing wrong?

Best regards,
Oliver.

That sounds like a warning message, and is not related in any form to your code. It is a bug in KDE itself, namely in the Plasma Components in use.

Does your code work if you use an application like plasmoidviewer or similar to test your QML instead?

"plasmoidviewer main.qml" does not work.

After moving main.qml to the subdirectory contents and creating a metadata.desktop file, "plasmoidviewer ." works.