It is years I have not used Tk so I read some docs to refresh my memory. I would indeed implement the "table" with a Tk::Canvas and the cards with bitmaps items. You need to add handlers to move the cards. I will probably send some some code if I can get some juice from my brain cells.

I first thought using TopLevel windows for moved cards and using Tk::wm overrideredirect to ask the window manager not to decorate the said windows/cards, But this is more complex and does probably work only on X-Window.

-- stefp -- check out TeXmacs wiki