Re: [fltk.coredev] Towards a Wayland platform for the FLTK library ?

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Re: Towards a Wayland platform for the FLTK library ? Bill Spitzak 13:22 Jun 16 top right image
 
Might be helpful to describe what the differences are, this may indicate mis-use of Wayland and there is some method to make a program work on both versions.


On Wed, Jun 16, 2021 at 8:57 AM Albrecht Schlosser <AlbrechtS.fltk@online.de> wrote:
On 6/16/21 4:03 PM Manolo wrote:
> It turns out I had to introduce slight differences in the FLTK Wayland
> code depending
> on whether it's run with Weston or with Gnome-Wayland. This creates
> the need
> for libfltk to detect whether Weston is running. I have found that
> environment variable
> XDG_SESSION_DESKTOP may be where to get that info. I see its value is
> weston or Ubuntu-wayland or gnome.
> A question to Weston users Albrecht and W.B. :
> Is XDG_SESSION_DESKTOP defined in your setup? and does its value
> contain the string "weston" ?

I haven't tried this yet in my Ubuntu VM, but on my Linux Mint the
answers are unfortunately "yes" and "no". Here's an excerpt of maybe
related environment vars:

DESKTOP_SESSION=cinnamon
XDG_SESSION_DESKTOP=cinnamon
XDG_SESSION_TYPE=x11
WAYLAND_DISPLAY=wayland-0

I executed 'env' in a "terminal" session provided by my weston instance
on the Linux desktop, the output is filtered.

You can see that WAYLAND_DISPLAY is defined. This is the only related
variable that is different than in a normal X session, but that doesn't
help, unfortunately.

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