Thanks for the video!

So far, though, I'm not seeing the same thing. On my various Linux
installations and on a fresh Linux Mint 18.2 installation, I get the
expected gray background.

Can you think of any configuration in your installation that I should
try to imitate?

At Tue, 7 Nov 2017 18:13:16 +0000, Erich Rast wrote:
> Here is how it looks on my machine:
> 
> https://vimeo.com/241738557
> 
> On Tue, 7 Nov 2017 17:57:27 +0000
> Erich Rast <er...@snafu.de> wrote:
> 
> > I thought this was a known bug that just never gets fixed. This has
> > given a black canvas when you click into the editor on my machine for
> > ages:
> > 
> > #lang racket/gui
> > (define testframe%
> >   (class frame%
> >    
> >     (define (init-layout)
> >       (letrec ((t (new text%)))
> >       (void (new editor-canvas%
> >                  [parent this]
> >                  [editor t]
> >                  [style '(transparent)]))))
> >     (super-new)
> >     (init-layout)))
> > 
> > (define frame (new testframe%
> >                    [label "Editor Canvas Test"]
> >                    [width 400]
> >                    [height 400]))
> > 
> > (send frame show #t)
> > 
> > On Tue, 07 Nov 2017 17:44:07 +0000
> > Stephen De Gabrielle <spdegabrie...@gmail.com> wrote:
> > 
> > > If you pop you code on pasterack or a gist I’ll test on OS X and
> > > windows
> > > 
> > > S.
> > > 
> > > On Tue, 7 Nov 2017 at 15:49, Erich Rast <er...@snafu.de> wrote:
> > >   
> > > > Hi!
> > > >
> > > > This is something I've been wondering for a while already but
> > > > never had time to ask.
> > > >
> > > > When an editor-canvas% is set to transparent in its style list,
> > > > and I type in it, then the whole editor gets black and nothing
> > > > can be seen.
> > > >
> > > > Shouldn't it be gray, as the window background so it looks as if
> > > > you type directly on the window?
> > > >
> > > > For my purposes, I could set the background color directly
> > > > in a non-transparent editor-canvas%, but I see no
> > > > platform-independent, Racket-native way of obtaining the exact
> > > > window background color. Do I need to implement changes in the
> > > > on-paint method? Is the black canvas desired behavior?
> > > >
> > > > [tested on Linux Mint 18.2 Cinnamon 64 bit, Cinnamon Version
> > > > 3.2.7, Radeon R9 280X graphics card]
> > > >
> > > > Best,
> > > >
> > > > Erich
> > > >
> > > > --
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> > 
> 
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