How to show progess in a QTreeView item ?

[THRESHE]

And one more question I'd like to ask. I don't know if this is the right topic so don't blame me too much

The problem is when I click on a row in my table widget it becomes highlighted but when I use delegates it is not. I've tried to do like this

if (table->currentRow() == index.row())
{
 painter->setBrush(QBrush(QColor("#444444")));
 painter->drawRect(opt.rect);
}

if (table->currentRow() == index.row())
{
 painter->setBrush(QBrush(QColor("#444444")));
 painter->drawRect(opt.rect);
}

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but it didn't work the way I thought. Also I've tried to use setBackground with QPainter and that didn't work either