Something

    const QString stylesheet = QString("QListView {"
            "background-color: palette(base);"
            "background-image: url(%1);"
            "background-position: bottom left;"
            "background-attachment: fixed;"
            "background-repeat: no-repeat;"
            "}")
        .arg(KStandardDirs::locate("data", "kcm_phonon/listview-background.png"));
    deviceList->setStyleSheet(stylesheet);