diff options
author | Po Lu <luangruo@yahoo.com> | 2022-12-01 19:15:28 +0800 |
---|---|---|
committer | Eli Zaretskii <eliz@gnu.org> | 2022-12-01 14:34:17 +0200 |
commit | 3b5b99ac919eff05374d74b4a052d33c34c56742 (patch) | |
tree | 188a870658a3f93b2d304e741e486e500638fbaf | |
parent | 4b2f5425d7af1a6f992ad8ce0a4452a2e778815a (diff) | |
download | emacs-3b5b99ac919eff05374d74b4a052d33c34c56742.tar.gz |
* doc/lispref/frames.texi (Input Focus): Clarify for XInput 2 support.
-rw-r--r-- | doc/lispref/frames.texi | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/doc/lispref/frames.texi b/doc/lispref/frames.texi index b3f1a29ae8f..a656964198b 100644 --- a/doc/lispref/frames.texi +++ b/doc/lispref/frames.texi @@ -2854,10 +2854,18 @@ The plural ``frames'' in the previous paragraph is deliberate: while Emacs itself has only one selected frame, Emacs can have frames on many different terminals (recall that a connection to a window system counts as a terminal), and each terminal has its own idea of which -frame has input focus. When you set the input focus to a frame, you -set the focus for that frame's terminal, but frames on other terminals +frame has input focus. Under the X Window System, where user input is +organized into individual ``seats'' of input, each seat in turn can +have its own specific input focus. When you set the input focus to a +frame, you set the focus for that frame's terminal on the last seat +which interacted with Emacs, but frames on other terminals and seats may still remain focused. +If the input focus is set before any user interaction has occurred on +the specified terminal, then the X server picks a random seat +(normally the one with the lowest number) and sets the input focus +there. + Lisp programs can switch frames temporarily by calling the function @code{select-frame}. This does not alter the window system's concept of focus; rather, it escapes from the window manager's control until |