I want to do Buttons and so to look nicer when doing windowing in Dr Racket. I did not found an example how to do it and where are icons stored.
Isabel
You can load a bitmap and use it as the label argument when making a new button%:
#lang racket/gui
(define frame (new frame% [label ""]))
(define button-icon (read-bitmap "path/to/image"))
(define button (new button% [label button-icon] [parent frame]))
(send frame show #t)