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Subject:	Re: Fullscreen application with Cygwin/X in multiwindow mode
References:	<CAHvVhSvJVtmNXQLxKNvhWUxH6MzCeaq-ZchCR9hcHk54yRDx3w AT mail DOT gmail DOT com>
Cc:	David Chamberlain <dc46and2 AT gmail DOT com>
To:	cygwin AT cygwin DOT com
From:	Jon Turney <jon DOT turney AT dronecode DOT org DOT uk>
Message-ID:	<9494ede9-ec64-bb79-8f8f-9bfb37c12f3b@dronecode.org.uk>
Date:	Thu, 24 Nov 2016 15:09:05 +0000
User-Agent:	Mozilla/5.0 (Windows NT 10.0; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.5.0
MIME-Version:	1.0
In-Reply-To:	<CAHvVhSvJVtmNXQLxKNvhWUxH6MzCeaq-ZchCR9hcHk54yRDx3w@mail.gmail.com>

On 23/11/2016 17:24, David Chamberlain wrote:
> I recently installed xinit and the PDF viewers Evince and Zathura. I'm
> starting X via startxwin which puts it in multiwindow mode. Both of
> the PDF viewers work fine, except when I press F11 to view a PDF
> fullscreen, nothing changes.
>
> Is this an inherent limitation of Cygwin/X, or a problem with my
> config or these particular applications? Should it be possible to make
> an X application fullscreen while running in multiwindow mode?

The multiwindow-mode window manager doesn't support or advertise support 
for _NET_WM_STATE_FULLSCREEN, so this doesn't work at the moment.

So, technically I guess this an application/toolkit problem, as it 
should notice that lack of support and e.g. grey-out the fullscreen 
option in the menu.

But ideally this would be fixed by adding support for 
_NET_WM_STATE_FULLSCREEN to the WM.

-- 
Jon Turney
Volunteer Cygwin/X X Server maintainer

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