Ah, I understand. Thanks for the answer.
Harven
----- Mail original ----- De: "Peter Herth" herth@peter-herth.de À: "Talk about Ltk the Lisp Toolkit" ltk-user@common-lisp.net Envoyé: Samedi 1 Septembre 2012 14:17:00 Objet: Re: [ltk-user] problem with the :background keyword
Hi,
short answer: you do nothing wrong, you can't set the background of buttons.
Long answer: Tk introduced a new set of widgets in 8.5, the "Ttk" versions, which are fully themeable and tend to look native on most platforms. Ltk by default uses those widgets. As they are based on an UI theme, they support less configuration options. And frankly speaking, it is a good practice not to change e.g. the background of buttons. The only widget, where I needed to change the background frequently would be the frame widget - and for that reason Ltk wraps the "classical-frame" which is the old style one with a background option. You could of course define your own UI theme Tk and Ltk allows for that.
Peter