[wxruby-users] How to put a background image on a panel

[Trans]

Well I've made a lot of progress on my app, but I'm stuck on figuring
out how to add a bitmap. I have a notebook and a page panel. On this
panel I want to put a backdrop image and scale it to the size of the
panel. How do I do this? I looked at some of the samples related to
bitmaps and I could not see how to apply that to my situation.

Thanks,
T.