Using GTK+ with Wayland

Using GTK+ with Wayland — Wayland-specific aspects of using GTK+

Using GTK+ with Wayland

The GDK Wayland backend provides support for running GTK+ applications under the Wayland display server. To run your application in this way, select the Wayland backend by setting GDK_BACKEND=wayland.

Currently, the Wayland backend does not use any additional commandline options or environment variables.

For up-to-date information about the current status of this backend, see the project page.

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Licensed under the GNU Lesser General Public License version 2.1 or later.
https://developer.gnome.org/gtk3/3.24/gtk-wayland.html