Hi Johannes

Thank you very much so far.

Yes, I have a sort of Thumbnail Browser in mind. A few Pictures wouldn't be a problem, but I want to be able to display folders with several hundred pictures, too, without shutting down the system.
I guess a kind of fetchMore function would be sensible, to create QPixmaps from the files while scrolling, and store these QPixmaps up to a certain limit, maybe until the user has scrolled away far enough.

I don't have any experience with QGraphicsScene. I always thought that it's more suited to display dynamic, interactive content, not just something like thumbnails of files?