QListWidget disable mouseover highlight

Question

I have a QListWidget with several QListWidgetItems containing only text but with different background colors. By default the items become highlighted with a blue bar when I mouse over them. How can I disable the highlighting?

The code I use

//add spacer
QListWidgetItem *spacer = new QListWidgetItem("foo");
spacer->setBackgroundColor(QColor(Qt::gray));
spacer->setFlags(Qt::ItemIsEnabled);    //disables selectionable
ui->listWidget->addItem(spacer);

Thanks in advance.

spacer is the gray item with the name of the day

EDIT: added picture link (snipping tool Tool hides mouse, 6th item is highlighted)

Answer 1

I managed to do it with an custom item delegate overriding the QStyledItemDelegate::paint method.

void ActivitiesItemDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{

//determine if index is spacer
//TODO non-hacky spacer detection
bool spacer = false;
QString text = index.data().toString();
if(        ( text == "Monday")
        || ( text == "Tuesday")
        || ( text == "Wednesday")
        || ( text == "Thursday")
        || ( text == "Friday")
        || ( text == "Saturday")
        || ( text == "Sunday")
){
    spacer = true;
}

if(option.state & QStyle::State_MouseOver){
    if(spacer){
        painter->fillRect(option.rect, QColor(Qt::gray));
    }else{
        painter->fillRect(option.rect, QColor(Qt::white));
    }
    painter->drawText(option.rect.adjusted(3,1,0,0), text);
    return;
}

//default
QStyledItemDelegate::paint(painter, option, index);
}