application-preferences-handler-issue-demo

README.md

application-preferences-handler-issue-demo

Example of racket/gui#170

gui-app.rkt

#lang racket/gui

(application-preferences-handler #f)

(send (new frame%
           [label "Demo"]
           [width 500]
           [height 500])
      show
      #t)

typescript

Script started on Sat Feb 22 14:29:24 2020
[?1034hSapientia:application-preferences-handler-issue-demo philip$ racket gui-app.rkt
application: not a procedure;
 expected a procedure that can be applied to arguments
  given: #f
  context...:
   not-a-procedure
   apply
   .../private/app.rkt:67:21
   .../common/queue.rkt:435:6
   call-in-empty-metacontinuation-frame
   [repeats 1 more time]
   .../common/queue.rkt:486:32
   .../common/queue.rkt:634:3
   call-in-empty-metacontinuation-frame
   call-with-empty-metacontinuation-frame-for-swap
Sapientia:application-preferences-handler-issue-demo philip$ exit

Script done on Sat Feb 22 14:29:45 2020