Thanks for the tip ! The "tree" class looks nice, but in my case I'm afraid it will not work well. The reason for that is that I'm doing a Windows CE application for a device with a small touch screen, to be clicked with the finger tips, and I'm afraid that the symbols in the tree are too small to click on. The tabs in a property sheet are simply bigger, at least when I as in my case have only 4-5 of them. :~