Yes, this time the purpose was to select correct graphics in a "simple" fashion. I've included a couple of switch positions used in this particular gauge, for reference:

Yes, look at Karl's answer, and notice how in the pictures, when the left black knob is pulled, it casts a shadow over the red button. That was done by first changing the bitmap of the black knob, obviously, since it is now pulled, and that triggered the update of the red button bitmap, which is changed to one with the shadow cast on it.Cool deal, so you are a real pilot, me too :-).

Ehh, whups. No actually, but I only fly/make/remake GA's in the sim :)Although I'm a frequent right-seater for real :D

Karl,I knew you were the instructor!Jan"Procul Negotiis"

Yeah, I wish :D A friend of mine (PA28-140 co-owner) is considering becoming a CFI, maybe then I can finally take the left seat :) No sorry, over here getting PPL/A would cause havoc on anyones economy.It's a rich mans hobby, and I'm not (yet?) one of them. But I am a professional lotto gambler :D :D