Change X11 window title after emacs started

Question

When I start emacs, I can use the --title= option to control the title of the x-window that holds the emacs application. Is it possible to change the title after emacs starts from elisp?

Gildus

Answer 1

M-x set-frame-name NewName RET

and from elisp

(set-frame-name "NewName")

Severn

Doesn't work for me: GNU EMACS 24.3.1 on cygwin multiwindow X11. (set-frame-parameter frame 'title arg) works. – Elver

That didn't work form me, either. I was also using 24.3.1, but on Windows. I tried Krazy Glews's suggetion without success, until reading his full answer bellow, then I figured out that, in my case, I just needed replace 'frame' with nil. So using (set-frame-parameter nil 'title "My desired title") did the trick for me – Carlton

Answer 2

I use

(setq frame-title-format "%b - emacs")

to include the current buffer name in the frame title.

Pall

Doesn't work for me: GNU EMACS 24.3.1 on cygwin multiwindow X11. (set-frame-parameter frame 'title arg) works. – Elver

Answer 3

The following worked for me (GNU EMACS 24.3.1 on cygwin multiwindow X11):

 (set-frame-parameter frame 'title arg)

which I wrapped in an interactive function

(defun set-frame-title/ag (title &optional frame)
  "set frame TITLE of &optional FRAME defaults to (selected-frame)
aka C11 window titlebar name"
  (interactive "sframe title: ")
  (set-frame-parameter frame 'title title)
  )

Elver

Satisfies my immediate need: some day I will tweak my frame-title-format to optionally mix in a frame specific name in combination with what I already do ("emacs hostname display pid user") – Elver