I've pushed a change to avoid this warning.
At Wed, 4 Jan 2017 01:22:41 -0800 (PST), Lehi Toskin wrote:
> I've been encountering Gtk-WARNING's on some simple GUI code and it's not
> really making any sense to me. Here's the code:
>
> ;;;
> #lang racket/gui
>
> (define frame
> (new frame%
> [label "foo"]
> [width 500]
> [height 500]))
>
> (define lbox
> (new list-box%
> [parent frame]
> [label "lbox"]
> [style '(single vertical-label)]
> [choices '("aaaa"
> "bbbb"
> "cccc"
> "dddd")]))
>
> (send frame show #t)
> ;;;
>
>
> Here's the error:
>
> (foo.rkt:23484): Gtk-WARNING **: Allocating size to GtkFixed 0x2023270
> without
> calling gtk_widget_get_preferred_width/height(). How does the code know the
> size to allocate?
>
>
> Now, a workaround I've found that works is to set lbox's style to include
> 'deleted and then *after* I show the frame, I tell the frame to add lbox as a
> child. I think I understand why this is happening, but IMHO the above code
> should Just Workâ˘.
>
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