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 <address@hidden> 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. :-)

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