Re: [MIT-Scheme-users] Trouble drawing immediately after making a graphics device on the X window system

[Matt Birkholz]

On Sat, 2018-09-08 at 13:18 -0600, Ty Lewis wrote:
> Is this a known issue by chance?

Yes.  I've seen that kind of thing affect Edwin too.
> Are there any better workarounds?

Nothing easy.  It really needs to do its own double-buffering, e.g. draw to an 
off-screen pixmap and serve expose events from it.  I don't see any expose 
event handling in the current code.
If you want it fixed, my rates are very reasonable.  :-)___
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Re: [MIT-Scheme-users] Trouble drawing immediately after making a graphics device on the X window system

[Chris Hanson]

There's no expose handling because we always tell the server to use backing
store. The server is supposed to take care of all that for us.

Apparently there's a bug in the X server.

On Wed, Sep 19, 2018 at 4:36 PM Matt Birkholz 
wrote:

> On Sat, 2018-09-08 at 13:18 -0600, Ty Lewis wrote:
>
> Is this a known issue by chance?
>
>
> Yes. I've seen that kind of thing affect Edwin too.
>
> Are there any better workarounds?
>
>
> Nothing easy. It really needs to do its own double-buffering, e.g. draw to
> an off-screen pixmap and serve expose events from it. I don't see *any*
> expose event handling in the current code.
>
> If you want it fixed, my rates are very reasonable. :-)
>
> ___
> MIT-Scheme-users mailing list
> MIT-Scheme-users@gnu.org
> https://lists.gnu.org/mailman/listinfo/mit-scheme-users
>
___
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