Mindtraveller Messages: 917 Registered: August 2007 Location: Russia, Moscow rgn.
Experienced Contributor
mrjt, thank you for your notice.
Finally I used the same method as you (and as Sergey proposed).
Using image as a background even helped making a little 3D-look for button (a little shiny for unpressed, a little dimmed for pressed).
I also used plain drawing to make it more clear which of buttons is selected (due to interface to be used inside factories, plain desktop GUI may not need these).