GNU bug report logs -
#16517
Emacs and display resolution change
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Report forwarded
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bug-gnu-emacs <at> gnu.org
:
bug#16517
; Package
emacs
.
(Wed, 22 Jan 2014 07:34:02 GMT)
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Acknowledgement sent
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Fabrice Popineau <fabrice.popineau <at> gmail.com>
:
New bug report received and forwarded. Copy sent to
bug-gnu-emacs <at> gnu.org
.
(Wed, 22 Jan 2014 07:34:03 GMT)
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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):
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Hi,
The current Emacs trunk does not seem to honour display resolution change
under Windows.
There is one case where it is annoying: when the frame is fullsized.
I have a laptop. I run `emacs -Q' , then `M-x toggle-frame-fullscreen'.
Next I connect an external display with a higher resolution.
The frame displays undecorated, but with a size of the previous screen
resolution.
I need to call `M-x toggle-frame-fullscreen' twice to get back a fullsized
frame.
I think that for handling at least this case, the following patch could be
applied:
=== modified file 'src/w32term.c'
--- src/w32term.c 2014-01-06 17:22:52 +0000
+++ src/w32term.c 2014-01-22 05:49:45 +0000
@@ -4841,6 +4844,7 @@
if (f)
{
dpyinfo->n_cbits = msg.msg.wParam;
+ x_check_fullscreen(f);
DebPrint (("display change: %d %d\n",
(short) LOWORD (msg.msg.lParam),
(short) HIWORD (msg.msg.lParam)));
However I'm not sure of any possibly harmful side effects.
One thing I have observed is that if you start with a normal frame, lower
the resolution to some point where the y resolution is less than the height
of the frame, then the frame will become height-maximized. So if you raise
the resolution again, it will stay height-maximized.
I'm fine with that, but I'm not sure what users would expect. Memorizing
the frame geometry so that it will be restored in case of several
resolution change maybe more complex.
Apologies if I missed obvious points or ways to handle that.
Regards,
Fabrice Popineau
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Reply sent
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Eli Zaretskii <eliz <at> gnu.org>
:
You have taken responsibility.
(Sat, 25 Jan 2014 13:07:01 GMT)
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Notification sent
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Fabrice Popineau <fabrice.popineau <at> gmail.com>
:
bug acknowledged by developer.
(Sat, 25 Jan 2014 13:07:02 GMT)
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Message #10 received at 16517-done <at> debbugs.gnu.org (full text, mbox):
> From: Fabrice Popineau <fabrice.popineau <at> gmail.com>
> Date: Wed, 22 Jan 2014 08:32:31 +0100
>
> The current Emacs trunk does not seem to honour display resolution change
> under Windows.
> There is one case where it is annoying: when the frame is fullsized.
> I have a laptop. I run `emacs -Q' , then `M-x toggle-frame-fullscreen'.
> Next I connect an external display with a higher resolution.
> The frame displays undecorated, but with a size of the previous screen
> resolution.
> I need to call `M-x toggle-frame-fullscreen' twice to get back a fullsized
> frame.
>
> I think that for handling at least this case, the following patch could be
> applied:
No comments, so I applied your patch. Thanks.
Information forwarded
to
bug-gnu-emacs <at> gnu.org
:
bug#16517
; Package
emacs
.
(Sat, 25 Jan 2014 13:19:01 GMT)
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Message #13 received at 16517-done <at> debbugs.gnu.org (full text, mbox):
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Thanks. It seems harmless for those who don't need it and helps a lot the
others (like me!).
Fabrice
2014-01-25 Eli Zaretskii <eliz <at> gnu.org>
> > From: Fabrice Popineau <fabrice.popineau <at> gmail.com>
> > Date: Wed, 22 Jan 2014 08:32:31 +0100
> >
> > The current Emacs trunk does not seem to honour display resolution change
> > under Windows.
> > There is one case where it is annoying: when the frame is fullsized.
> > I have a laptop. I run `emacs -Q' , then `M-x toggle-frame-fullscreen'.
> > Next I connect an external display with a higher resolution.
> > The frame displays undecorated, but with a size of the previous screen
> > resolution.
> > I need to call `M-x toggle-frame-fullscreen' twice to get back a
> fullsized
> > frame.
> >
> > I think that for handling at least this case, the following patch could
> be
> > applied:
>
> No comments, so I applied your patch. Thanks.
>
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bug archived.
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internal_control <at> debbugs.gnu.org
.
(Sun, 23 Feb 2014 12:24:03 GMT)
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This bug report was last modified 10 years and 87 days ago.
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