⚠️ Deprecated ⚠️

This is deprecated since version 2.42.

do not use this API. Since 2.42 the value of the XDG_CURRENT_DESKTOP environment variable will be used.

Sets the name of the desktop that the application is running in.

This is used by method@Gio.AppInfo.should_show and method@Gio.DesktopAppInfo.get_show_in to evaluate the OnlyShowIn and NotShowIn keys.

Should be called only once; subsequent calls are ignored.

Parameters