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Simple windowed application: Difference between revisions
Add Racket entry
(Add Racket entry) |
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}
)</lang>
=={{header|Racket}}==
<lang racket>
#lang racket/gui
(define frame (new frame% [label "There have been no clicks yet"]))
(define num-clicks 0)
(define (cb obj me)
(set! num-clicks (add1 num-clicks))
(send frame set-label (format "~a" num-clicks)))
(new button% [parent frame] [label "Click me"] [callback cb])
(send frame show #t)
</lang>
=={{header|RapidQ}}==
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