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Re: How to determine (from Elisp) whether the Emacs frame has focus?
From: |
Emanuel Berg |
Subject: |
Re: How to determine (from Elisp) whether the Emacs frame has focus? |
Date: |
Sat, 14 Nov 2015 04:48:09 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) |
Marcin Borkowski <mbork@mbork.pl> writes:
> I'd like to know whether the selected Emacs frame
> has focus. Currently, I'm using an xdotool/xprop
> combo (I'm on GNU/Linux), but I'd like to know
> whether there is a better way. I know about
> focus-in-hook and focus-out-hook, and I could make
> them set/unset some global variable, but this
> looks hackish.
Try this:
(defun emacs-window-has-focus ()
(interactive) ; interactive to test, with the line below...
(sleep-for 3) ; ...so you have time to change the window
(let ((focused-window-pid
(string-to-number
(shell-command-to-string
"wmctrl -l -p | grep `xprop -root _NET_ACTIVE_WINDOW | cut -d x -f
2` | cut -d ' ' -f 4")
)))
(message (if (= (emacs-pid) focused-window-pid) "has" "not so")) ))
--
underground experts united
http://user.it.uu.se/~embe8573
Re: How to determine (from Elisp) whether the Emacs frame has focus?, Eli Zaretskii, 2015/11/14