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Subject:	Re: remote GTK apps nor workin correctly in Cygwin/X
References:	<adf158afe71ee17a5967f0ae7668b565 AT upsilon DOT org DOT uk>
Cc:	David Cunningham <ml AT upsilon DOT org DOT uk>
To:	cygwin AT cygwin DOT com
From:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID:	<a49ae00c-8061-020f-70e5-03734044b649@dronecode.org.uk>
Date:	Fri, 2 Dec 2016 14:58:14 +0000
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In-Reply-To:	<adf158afe71ee17a5967f0ae7668b565@upsilon.org.uk>

On 30/11/2016 12:36, David Cunningham wrote:
> I'm not sure if this is a cygwin problem, a gtk problem or something
> else (please be gentle).

Thanks for reporting this issue.

> I have 3 remote machines, one running servers, one running Ubuntu 16.04
> and the other 2 Debian stretch.
[...]
> Remote applications on the Debian machines from a Cygwin xterm (or
> putty) don't work correctly. An application (gnome-terminal and nemiver
> being the two mostly use) will open correctly and keyboard is (mostly)
> OK but mouse input doesn't work.
>
> For example clicking a menu heading will place a line under the heading
> in the GUI but the menu doesn't open. Note that I get the same failure
> when using the keyboard shortcut keys (e.g ALT-F <> File). Sometimes a
> part of the menu (maybe one or 2 lines) will appear in the top left of
> the Desktop and can be scrolled through and selected using the keyboard.
> The window controls (minimise, maximise, exit) work correctly.

I can reproduce this using a debian stretch VM.

It occurs with the cygwin X server in both windowed and multiwindow 
mode, so that would seem to exonerate the cygwin multiwindow mode WM.

The menus work correctly using the debian X server with no WM, though.

> I get (lots of ) GTK error messages in terminal like this as I try to
> use the GUI:
[...]
> I've come across this bug filed against gtk in Debian which seems
> somewhat similar:
>
> <https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=842070>.
>
> I'm unclear then whether this is a Debian/gtk issue or a Cywin/X issue
> (given that Ubuntu->Debian is OK).

I'm pretty sure this is more fallout from the change mentioned in the 
upstream bug [1] linked there, but why it only manifests under the 
cygwin X server, I don't know.

[1] https://bugzilla.gnome.org/show_bug.cgi?id=773387

> Can anyone advise where I go from here?

I would suggest perhaps raising a bug against gtk+, although idk how 
much attention that will get.

-- 
Jon Turney
Volunteer Cygwin/X X Server maintainer

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