Which object should I use?

[Kathrin Hauptvogel <hauptvogel k rheinmetall-de com>]

Hello
I have to write an application which should show devices which could have two 
states. It should be only a square field that can change the color. Three of 
those elements should be group to an unit. Which Widgets should I use to 
realize those structure?


Kathrin Hauptvogel