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Re: select-frame-set-input-focus fails to raise the frame
From: |
Alan Third |
Subject: |
Re: select-frame-set-input-focus fails to raise the frame |
Date: |
Wed, 13 Dec 2017 22:26:34 +0000 |
User-agent: |
Mutt/1.9.1 (2017-09-22) |
On Wed, Dec 13, 2017 at 05:00:18PM -0500, Robert Weiner wrote:
> On Wed, Dec 13, 2017 at 3:47 PM, Alan Third <address@hidden> wrote:
>
> > On Tue, Dec 12, 2017 at 06:26:50PM -0500, Robert Weiner wrote:
> > > Here is a seemingly related problem with raise and lower frame.
> > >
> > > ;; This whole sexp works
> > > (let ((f (selected-frame)))
> > > (lower-frame f)
> > > (sit-for 1)
> > > (raise-frame f))
> > >
> > > ;; Only the first raise-frame call works
> > > (let ((f (next-frame)))
> > > ;; f is raised
> > > (raise-frame f)
> > > (sit-for 1)
> > > ;; f is NEVER LOWERED
> > > (lower-frame f))
> >
> > I can’t reproduce this, these both work as expected for me here on
> > macOS using the master branch and the -Q flag.
> >
>
> You are correct. This works fine today; strange it did not yesterday.
> The example I gave with the function named 'test' still fails as before.
I tried it again and it didn’t work! Changing the sit-for to sleep-for
fixed it. I know that sometimes sit-for doesn’t actually wait for the
given time, and I think that’s what’s happening here as I’m seeing the
frame being lowered, but not raised.
Presumably there’s some sort of timing thing where raise-frame then
lower-frame in rapid succession fails randomly.
FWIW, changing sit-for to sleep-for in ‘test’ results in 4 seconds of
a blank frame, but otherwise behaves as expected. This seems to work,
though:
(defun test ()
(let ((depress-frame (selected-frame))
(release-frame (make-frame)))
(select-frame-set-input-focus depress-frame)
(sit-for 0)
(sit-for 4)
(select-frame-set-input-focus release-frame)))
(test)
Presumably the first sit-for clears any pending input which then means
the second sit-for can actually do its thing.
(I think this is a side‐effect of the way input works on the NS port
where various things that you might not think of as ‘input’ are
essentially indistinguishable from keyboard input.)
--
Alan Third
- select-frame-set-input-focus fails to raise the frame, Bob Weiner, 2017/12/12
- Re: select-frame-set-input-focus fails to raise the frame, Robert Weiner, 2017/12/12
- Re: select-frame-set-input-focus fails to raise the frame, Alan Third, 2017/12/13
- Re: select-frame-set-input-focus fails to raise the frame, Robert Weiner, 2017/12/13
- Re: select-frame-set-input-focus fails to raise the frame,
Alan Third <=
- Re: select-frame-set-input-focus fails to raise the frame, Robert Weiner, 2017/12/13
- Re: select-frame-set-input-focus fails to raise the frame, Robert Weiner, 2017/12/14
- Re: select-frame-set-input-focus fails to raise the frame, Robert Weiner, 2017/12/15
- Re: select-frame-set-input-focus fails to raise the frame, Eli Zaretskii, 2017/12/15
- Re: select-frame-set-input-focus fails to raise the frame, Robert Weiner, 2017/12/15
- Re: select-frame-set-input-focus fails to raise the frame, Eli Zaretskii, 2017/12/15
- Re: select-frame-set-input-focus fails to raise the frame, Robert Weiner, 2017/12/16
- Re: select-frame-set-input-focus fails to raise the frame, Eli Zaretskii, 2017/12/16
- Re: select-frame-set-input-focus fails to raise the frame, Robert Weiner, 2017/12/16
- Re: select-frame-set-input-focus fails to raise the frame, Eli Zaretskii, 2017/12/16