slide not radio

words/app.rkt

@@ -73,23 +73,27 @@
   (make-text-field param str))
 
 (define current-min-size (make-parameter 3))
-(define current-max-size (make-parameter 20))
+(define current-max-size (make-parameter 24))
 
-(for ([param (list current-min-size current-max-size)]
-      [start-size (list (current-min-size) (- (current-max-size) 10))]
-      [end-size (list (+ (current-min-size) 10) (current-max-size))]
-      [label-str '("shortest " "longest  ")]
-      [selected-item (list 0 10)])
-     (new radio-box%
+(define length-panel (new horizontal-panel%
                           [parent window]
+                          [horiz-margin 6]
+                          [alignment '(left top)]
+                          [stretchable-width #true]
+                          [stretchable-height #false]))
+
+(for ([param (list current-min-size current-max-size)]
+      [label-str '("word length from" "to")])
+  (new slider%
+       [parent length-panel]
        [label label-str]
        [font app-font]
-          [horiz-margin 12]
-          [style '(horizontal)]
-          [selection selected-item]
-          [choices (map number->string (range start-size (add1 end-size)))]
-          [callback (λ (rb evt)
-                      (param (string->number (send rb get-item-label (send rb get-selection))))
+       [min-value (current-min-size)]
+       [max-value (current-max-size)]
+       [init-value (param)]
+       [stretchable-width #t]
+       [callback (λ (cb evt)
+                   (param (send cb get-value))
                    (refresh-wordbox))]))
 
 (define current-proper-names-choice (make-parameter #f))