QStyledItemDelegate - Update paint after state change

[hbatalha]

I have delegate button that I will be changing its state through a function like this:

void MyDelegate::paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    QStyleOptionButton button;
    QRect r = option.rect;//getting the rect of the cell
    int x,y,w,h;
    x = r.center().x() - 10;//the X coordinate
    y = r.top();//the Y coordinate
    w = 20;//button width
    h = 20;//button height
    button.rect = QRect(x,y,w,h);
    button.text = "";
    
    if(isEnabled)
        button.state = QStyle::State_Enabled;
    else
        button.state &= ~QStyle::State_Enabled;

    QApplication::style()->drawControl( QStyle::CE_PushButton, &button, painter);
    QItemDelegate::paint(painter, option, index);
}

void MyDelegate::setEnable(bool enabled)
{
    isEnabled = enabled;
}

After calling setEnable() the state doesn't change(visually) immediately like I desire it to. I was hoping for a update() -like function but I found no such.
So I am wondering how to do that.

[eyllanesc]

@hbatalha You have to call the update() method of the view.

[hbatalha]

@eyllanesc Thanks, I did that by:

ui->tableWidget->viewport()->update();

[eyllanesc]

@hbatalha I think ui->tableWidget->update(); should be enough.