What is the way to draw QStyleOptionButton QStyle::CE_CheckBox background?

[umen242]

im trying to get the parent background and set it as the checkbox background color i have this paint method that drows the checkbox :

@void paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
//Get item data
bool value = index.data(Qt::UserRole).toBool();
QString text = index.data(Qt::DisplayRole).toString();

    // fill style options with item data
    const QStyle *style = QApplication::style();
    QStyleOptionButton opt;
    opt.state |= value ? QStyle::State_On : QStyle::State_Off;
    opt.state |= QStyle::State_Enabled;
    opt.text = text;
    opt.rect = option.rect;

}
@

but how do i set the background color of this checkbox?

    // draw item data as CheckBox
    style->drawControl(QStyle::CE_CheckBox,&opt,painter);
}