[Qt-interest] QGraphicsScene:Items returning invisible items

[James Vernon]

Hi all,
I have a QGraphicsScene containing some visible items and some
invisible items. I want to do a collision detection at particular
points which I tried to do with the QGraphicsScene::items(), but
items() is only intended to return visible items. I think it used to
be possible to make items "visible" but give them an opacity of 0 so
the user couldn't see tem in the scene view as a way to get around
this, but I just tried it in Qt 4.6 beta and this work around seems to
have been optimised away. Is there a better method to find all items
at a point in a scene including items with visible set to false?
Thanks,
James