[newbie] Set background of specific row in QListView

[cerr]

Hi,

I've found this: https://forum.qt.io/topic/76265/set-...-in-qtableview
I have copied the setRowColor() from the link above into my code base call it like:

void Widget::on_HostList_doubleClicked(const QModelIndex &index)
{
    QAbstractItemModel *model = ui->HostList->model();
    setRowColor(model,index.row(),Qt::red,index);
}

void Widget::on_HostList_doubleClicked(const QModelIndex &index)
{
    QAbstractItemModel *model = ui->HostList->model();
    setRowColor(model,index.row(),Qt::red,index);
}

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but it does not seem to work, the color is not changing. Can someone help me here?