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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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Task/Simple-windowed-application/Racket/simple-windowed-application.rkt Normal file
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#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)