How to check if Xorg is running in emacs lisp?

Question

I've got some things in my configuration that works only in Xorg else dropping errors.

To solve it I need to know if Xorg is running or not. How can I check it ?

(defun nCdy-mode ()
    ;; TOOD: Add Xorg check
    ;(tool-bar-mode nil)
    (menu-bar-mode nil) ; TODO: Add hotkey
    ;(scroll-bar-mode nil)
    (setq inhibit-splash-screen t)

    (setq standard-indent 4)
    ;;(mouse-wheel-mode t)
    (setq backup-directory-alist (quote ((".*" . "~/.emacs_backups/"))))

    ;;TODO: Add Xorg check
    ;(require 'nyan-mode)
    ;(nyan-mode)
    ;(nyan-start-animation)
    ;;nyanyanyanyanyanyanyanyanyanyan

thank you

score 7 · Accepted Answer · answered Dec 27 '11 at 10:28

7

(case window-system
  (x '"X11 running")
  (otherwise "No X11"))

answered Dec 27 '11 at 10:28

Jürgen Hötzel

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score 4 · Answer 2 · edited May 23 '17 at 10:08

While Jürgen is correct that you probably want to test the value of window-system, note that because of its client/server mechanism, a single Emacs instance can have several frames, some of which are on graphic terminals (e.g. XOrg) and some of which are in text terminals.

As a result, you should think about where and when to test for window-system. See this answer to a similar question for more on how to deal with that.

How to check if Xorg is running in emacs lisp?

2 Answers2