[Qt-interest] How to fill QLabel Circles with different color

[Arun]

Normally what we will do to fill the color in widget with 
paintEvent is by using setPen & setBrush, as shown below.

void paintEvent(QPaintEvent *event)
{
QPainter p(this);
p.setPen(QPen(Qt::black, 1, Qt::SolidLine, Qt::RoundCap));
p.setBrush(QBrush(Qt::black, Qt::SolidPattern));
p.drawEllipse(0, 0, width() - 1, height() - 1);
p.end();
QLabel:aintEvent(event);
}
Here in the above shown example I am filling all the circles with black color.

But my problem is I have to fill the each circle with 
random/differnt colors taken from some other functionality. 
I cannot pass that color into this paintEvent function. 
So I have to do some other things which fills different
colors for these circles.

So how to fill solid pattern colors for these 
different paintEvent drawn circles ?

Thanks