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Message-ID: <2a8204cf-7c7d-4235-9e0b-bb9d2ef888a1@shaddybaddah.name>
Date: Mon, 2 Feb 2026 18:23:11 +1100
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Subject: Re: Cygwin/X - *bizarre discovery* doorknock like behaviour for new
 windows
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From: Shaddy Baddah via Cygwin <cygwin@cygwin.com>
Reply-To: Shaddy Baddah <lithium-cygwin@shaddybaddah.name>
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Hi,

On 21/10/2023 7:24 pm, Shaddy Baddah wrote:
> Hi,
>
> On 20/10/2023 12:40 pm, Shaddy Baddah via Cygwin wrote:
>>
>>
>> On 20/10/2023 11:50 am, Shaddy Baddah via Cygwin wrote:
>>> What I am seeing is that for Cygwin/X, in multi-window mode (and it
>>> just occurred to me it would be helpful to check the behaviour in
>>> rooted(? manual page terminology) mode. I'll follow-up on this)...
>>> in multi-window mode (Xwin -multiwindow), when I try to open an X 
>>> window
>>> for any given app, it is not displayed on the first run.
>>
>> For completeness, rooted mode does not have this issue.
>>
>> Also, a further note, once reproduced, further reproductions may require
>> exiting XWin, and restarting it.
>
> I've found a bizarre, and to me, a hilarious, reason for this behaviour.
>
> So my assertion that it happens once per app is wrong. It happens only
> on the very first run of an X11 app on a newly started Xwin server. I
> guess I noticed this when I ran different X11 apps as the first run app
> against the Xwin server, and drew that longbow. Apologies for any
> confusion. But it still happens that very first time.
>
> *And* the app is actually displayed. Bizarely though, it is trapped
> within the confines of the ConEmu (https://conemu.github.io/) command
> session Xwin was started under. So if that ConEmu session is not at
> the front of the visible stack, you have no idea the app has been
> displayed/rendered.
>
> I haven't looked, but I speculate ConEmu, which is feature rich, has
> some feature that makes it act as a "rooted" X window? It feels like a
> reach though... the other theory is that something with it's DLL
> injection perhaps. I'll look at that separate from Cygwin/X though.
>
> I have tried using regular Windows command prompt, and this doesn't
> happen. Nor with the Windows (Metro) Terminal app.
>
> Again, sorry for any confusion this has caused. 

Just a follow-up on this. I have finally got around to updating to
the latest, xorg-server-21.1.21-1. The behaviour, that being the
X11 window is trapped within the ConEmu visible region. Including
cropping if moved to the edge of that Window.

I've never got to the bottom of that one.

-- 
Regards,
Shaddy


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