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2013-04-11 01:07:29 -07:00 · 2013-04-11 01:07:29 -07:00 · 68f8f3e56b
commit 68f8f3e56b
parent b83f433714
14735 changed files with 178959 additions and 0 deletions
--- a/Task/Simple-windowed-application/Racket/simple-windowed-application.rkt
+++ b/Task/Simple-windowed-application/Racket/simple-windowed-application.rkt
@ -0,0 +1,11 @@
+#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)