tonyg changed the topic of #racket to: The Racket Programming Language -- https://racket-lang.org/ -- https://gather.town/app/wH1EDG3McffLjrs0/racket-users -- http://pasterack.org -- logged at https://libera.irclog.whitequark.org/racket/ -- This is the right place to ask for help with (Dr)Racket. Remember to wait around for an answer!
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<zeroalef> can anybody halp me to understand how to override callback for the `frame%` class from `racket/gui`?
<zeroalef> I need to override `on-close` method, but don't understand how it done
<bremner> zeroalef: not much personal experience, but the guide suggests define/override https://docs.racket-lang.org/guide/classes.html
<zeroalef> yeah
<zeroalef> it's error:
<zeroalef> `class*: superclass method for override, overment, inherit/super, or rename-super is not overrideable`
<zeroalef> there is my example https://onecompiler.com/racket/4263y5da4
<bremner> I wonder if super-new should be last?
<bremner> nope, that doesn't make a difference
<bremner> zeroalef: dpm
<zeroalef> what is dpm?
<bremner> don't you have to specify which class it inherits from? Otherwise how does it now about graphics
<bremner> dpm was a typo
<bremner> but thinking more. maybe you need to define a new class that inherits from from frame%?
<zeroalef> I did it
<zeroalef> I think i did it inherit
<bremner> oh right, sorry I misunderstood the racket way of doing classes
<bremner> you could also ask on https://racket.discourse.group/
<zeroalef> thx for help
<bremner> sure, sorry I don't know much about classes in racket
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