[Qt-interest] Automatically fit QGraphicsPixmapItem to scene

[Chris]

Whilst I'm quite experienced with QT3, I'm venturing into QT4 land at
last. I'm trying to render video by putting QPixmaps into a
QGraphicsScene. Is there an easy way to automatically fit the pixmap
to the scene? I can see a few long-winded ways to do it manually but I
would have thought it's the kind of thing people want to do all the
time.

TIA, Chris.