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Re: Menu-bar flickering on Win10

From: Po Lu
Subject: Re: Menu-bar flickering on Win10
Date: Wed, 02 Nov 2022 20:14:35 +0800
User-agent: Gnus/5.13 (Gnus v5.13)

Arash Esbati <arash@gnu.org> writes:

> Hi all,
> I had a minute and gave Eglot for a LaTeX file a roll.  Digestif as
> server doesn't work on Win10, so I installed texlab which works.  For
> the good news, I added one entry to `eglot-server-programs' and 'M-x
> eglot RET' just worked.
> For the bad news, I observed a random flickering in the menu-bar when
> completion happens which looks like this:
> This is with 'emacs -Q' and 'Corfu' providing the pop-ups.  Is this a
> known issue with child frames?  I'm asking if it's worth filing a bug
> report.
> Best, Arash

I think menu bar updates are not double buffered on MS Windows, and as a
consequence flickers as Emacs removes the items to update them.

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