[Interest] A question about QPen::setBrush method.

[Matej Košík]

Hi,

I am aware of the "QPainter::setBrush" method.
Its meaning is clear to me.

I was surprised when I learned that there exists also "QPen::setBrush"?
The manual describes its meaning as:

  Sets the brush used to fill strokes generated with this pen
  to the given brush.

How could the effect of this method be demonstrated?
What do you mean by "stroke"?
How can I draw a "stroke"?

Thank you in advance for helping me understand this.
(my Qt knowledge is weak)
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Matej