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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Nicolas Bertolo <nicolasbertolo@HIDDEN>
Thread-Topic: 27.0.90; Flickering in Windows 10
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Content preview: Sometimes the emacs windows will flicker badly. This often
happens when scrolling, just moving the cursor, or using clicking with the
mouse on some part of the buffer.
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<html xmlns:o=3D"urn:schemas-microsoft-com:office:office" xmlns:w=3D"urn:sc=
hemas-microsoft-com:office:word" xmlns:m=3D"http://schemas.microsoft.com/of=
fice/2004/12/omml" xmlns=3D"http://www.w3.org/TR/REC-html40"><head><meta ht=
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--></style></head><body lang=3DEN-GB link=3Dblue vlink=3D"#954F72"><div cla=
ss=3DWordSection1><p class=3DMsoNormal>Sometimes the emacs windows will fli=
cker badly. This often happens when</p><p class=3DMsoNormal>scrolling, just=
moving the cursor, or using clicking with the mouse on some part</p><p cla=
ss=3DMsoNormal>of the buffer.</p><p class=3DMsoNormal><o:p> </o:p></p>=
<p class=3DMsoNormal>It can be reproduced with `emacs -Q` but it is much le=
ss pronounced than with my</p><p class=3DMsoNormal>custom configuration. I =
can post it if necessary.</p><p class=3DMsoNormal><o:p> </o:p></p><p c=
lass=3DMsoNormal>The following steps can be useful to reproduce it:</p><p c=
lass=3DMsoNormal>1) Open a long C++ file.</p><p class=3DMsoNormal>2) Run (s=
etq mouse-wheel-scroll-amount '(1)).</p><p class=3DMsoNormal>3) Mouse the m=
ouse whell up and down fast.</p><p class=3DMsoNormal>4) Pay attention to th=
e part of the screen that should show new content.</p><p class=3DMsoNormal>=
Sometimes it will flicker a few time before stabilizing.</p><p class=3DMsoN=
ormal><o:p> </o:p></p><p class=3DMsoNormal><o:p> </o:p></p><p cla=
ss=3DMsoNormal>In GNU Emacs 27.0.90 (build 1, x86_64-w64-mingw32)</p><p cla=
ss=3DMsoNormal> of 2020-03-26 built on DESKTOP-0DKLDHI</p><p class=3DMsoNor=
mal>Repository revision: e1f0e0892232221e6333b24788b97942c83ec738</p><p cla=
ss=3DMsoNormal>Repository branch: emacs-27</p><p class=3DMsoNormal>Windowin=
g system distributor 'Microsoft Corp.', version 10.0.18363</p><p class=3DMs=
oNormal>System Description: Microsoft Windows 10 Pro (v10.0.1909.18363.720)=
</p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>Recent m=
essages:</p><p class=3DMsoNormal>Sending...</p><p class=3DMsoNormal>Sending=
via mail...</p><p class=3DMsoNormal><left-fringe> <mouse-1> is=
undefined</p><p class=3DMsoNormal>Save this mail sending choice? (y or n) =
n</p><p class=3DMsoNormal>Sending...done</p><p class=3DMsoNormal>Beginning =
of buffer [2 times]</p><p class=3DMsoNormal>C-x C-k C-x k is undefined</p><=
p class=3DMsoNormal>Quit</p><p class=3DMsoNormal>ESC ESC M-x is undefined</=
p><p class=3DMsoNormal>delete-backward-char: Text is read-only</p><p class=
=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>Configured using:</p=
><p class=3DMsoNormal> 'configure --prefix=3D/c/users/nicol/emacs/'</p><p c=
lass=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>Configured featu=
res:</p><p class=3DMsoNormal>XPM JPEG TIFF GIF PNG RSVG SOUND DBUS NOTIFY W=
32NOTIFY ACL GNUTLS</p><p class=3DMsoNormal>LIBXML2 HARFBUZZ ZLIB TOOLKIT_S=
CROLL_BARS MODULES THREADS JSON PDUMPER</p><p class=3DMsoNormal>LCMS2 GMP</=
p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>Important =
settings:</p><p class=3DMsoNormal>=C2=A0 value of $LANG: ENG</p><p class=3D=
MsoNormal>=C2=A0 locale-coding-system: cp1252</p><p class=3DMsoNormal><o:p>=
</o:p></p><p class=3DMsoNormal>Major mode: C++//l</p><p class=3DMsoNo=
rmal><o:p> </o:p></p><p class=3DMsoNormal>Minor modes in effect:</p><p=
class=3DMsoNormal>=C2=A0 tooltip-mode: t</p><p class=3DMsoNormal>=C2=A0 gl=
obal-eldoc-mode: t</p><p class=3DMsoNormal>=C2=A0 electric-indent-mode: t</=
p><p class=3DMsoNormal>=C2=A0 mouse-wheel-mode: t</p><p class=3DMsoNormal>=
=C2=A0 tool-bar-mode: t</p><p class=3DMsoNormal>=C2=A0 menu-bar-mode: t</p>=
<p class=3DMsoNormal>=C2=A0 file-name-shadow-mode: t</p><p class=3DMsoNorma=
l>=C2=A0 global-font-lock-mode: t</p><p class=3DMsoNormal>=C2=A0 font-lock-=
mode: t</p><p class=3DMsoNormal>=C2=A0 blink-cursor-mode: t</p><p class=3DM=
soNormal>=C2=A0 auto-composition-mode: t</p><p class=3DMsoNormal>=C2=A0 aut=
o-encryption-mode: t</p><p class=3DMsoNormal>=C2=A0 auto-compression-mode: =
t</p><p class=3DMsoNormal>=C2=A0 line-number-mode: t</p><p class=3DMsoNorma=
l>=C2=A0 transient-mark-mode: t</p><p class=3DMsoNormal>=C2=A0 abbrev-mode:=
t</p><p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>Load-p=
ath shadows:</p><p class=3DMsoNormal>None found.</p><p class=3DMsoNormal><o=
:p> </o:p></p><p class=3DMsoNormal>Features:</p><p class=3DMsoNormal>(=
kmacro mailalias mailclient browse-url vc-git diff-mode easy-mmode</p><p cl=
ass=3DMsoNormal>cc-mode cc-fonts cc-guess cc-menus cc-cmds cc-styles cc-ali=
gn cc-engine</p><p class=3DMsoNormal>cc-vars cc-defs help-mode pp shadow so=
rt mail-extr emacsbug message rmc</p><p class=3DMsoNormal>puny dired dired-=
loaddefs format-spec rfc822 mml easymenu mml-sec</p><p class=3DMsoNormal>pa=
ssword-cache epa derived epg epg-config gnus-util rmail rmail-loaddefs</p><=
p class=3DMsoNormal>text-property-search seq byte-opt gv bytecomp byte-comp=
ile cconv</p><p class=3DMsoNormal>mm-decode mm-bodies mm-encode mail-parse =
rfc2231 mailabbrev gmm-utils</p><p class=3DMsoNormal>mailheader sendmail rf=
c2047 rfc2045 ietf-drums mm-util mail-prsvr</p><p class=3DMsoNormal>mail-ut=
ils time-date subr-x cl-loaddefs cl-lib tooltip eldoc electric</p><p class=
=3DMsoNormal>uniquify ediff-hook vc-hooks lisp-float-type mwheel dos-w32 ls=
-lisp</p><p class=3DMsoNormal>disp-table term/w32-win w32-win w32-vars term=
/common-win tool-bar dnd</p><p class=3DMsoNormal>fontset image regexp-opt f=
ringe tabulated-list replace newcomment</p><p class=3DMsoNormal>text-mode e=
lisp-mode lisp-mode prog-mode register page tab-bar menu-bar</p><p class=3D=
MsoNormal>rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-l=
ock</p><p class=3DMsoNormal>syntax facemenu font-core term/tty-colors frame=
minibuffer cl-generic</p><p class=3DMsoNormal>cham georgian utf-8-lang mis=
c-lang vietnamese tibetan thai tai-viet lao</p><p class=3DMsoNormal>korean =
japanese eucjp-ms cp51932 hebrew greek romanian slovak czech</p><p class=3D=
MsoNormal>european ethiopic indian cyrillic chinese composite charscript ch=
arprop</p><p class=3DMsoNormal>case-table epa-hook jka-cmpr-hook help simpl=
e abbrev obarray</p><p class=3DMsoNormal>cl-preloaded nadvice loaddefs butt=
on faces cus-face macroexp files</p><p class=3DMsoNormal>text-properties ov=
erlay sha1 md5 base64 format env code-pages mule</p><p class=3DMsoNormal>cu=
stom widget hashtable-print-readable backquote threads w32notify</p><p clas=
s=3DMsoNormal>dbusbind w32 lcms2 multi-tty make-network-process emacs)</p><=
p class=3DMsoNormal><o:p> </o:p></p><p class=3DMsoNormal>Memory inform=
ation:</p><p class=3DMsoNormal>((conses 16 92013 15535)</p><p class=3DMsoNo=
rmal> (symbols 48 9465 0)</p><p class=3DMsoNormal> (strings 32 26206 2252)<=
/p><p class=3DMsoNormal> (string-bytes 1 939680)</p><p class=3DMsoNormal> (=
vectors 16 14062)</p><p class=3DMsoNormal> (vector-slots 8 176785 28090)</p=
><p class=3DMsoNormal> (floats 8 33 182)</p><p class=3DMsoNormal> (interval=
s 56 3372 30)</p><p class=3DMsoNormal> (buffers 1000 17))<o:p></o:p></p></d=
iv></body></html>=
Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.505 (Entity 5.505) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Nicolas Bertolo <nicolasbertolo@HIDDEN> Subject: bug#40278: Acknowledgement (27.0.90; Flickering in Windows 10) Message-ID: <handler.40278.B.158550185929447.ack <at> debbugs.gnu.org> References: <5e80c8ad.1c69fb81.73345.30e9@HIDDEN> X-Gnu-PR-Message: ack 40278 X-Gnu-PR-Package: emacs Reply-To: 40278 <at> debbugs.gnu.org Date: Sun, 29 Mar 2020 17:11:03 +0000 Thank you for filing a new bug report with debbugs.gnu.org. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-gnu-emacs@HIDDEN If you wish to submit further information on this problem, please send it to 40278 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 40278: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D40278 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
X-Loop: help-debbugs@HIDDEN
Subject: bug#40278: 27.0.90; Flickering in Windows 10
Resent-From: Eli Zaretskii <eliz@HIDDEN>
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From: Eli Zaretskii <eliz@HIDDEN>
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> Date: Sun, 29 Mar 2020 13:11:20 -0300
> From: Nicolas Bertolo <nicolasbertolo@HIDDEN>
> Bcc: <nicolasbertolo@HIDDEN>
>
> 1) Open a long C++ file.
>
> 2) Run (setq mouse-wheel-scroll-amount '(1)).
>
> 3) Mouse the mouse whell up and down fast.
>
> 4) Pay attention to the part of the screen that should show new content.
>
> Sometimes it will flicker a few time before stabilizing.
I don't see it.
X-Loop: help-debbugs@HIDDEN
Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Nicolas =?UTF-8?Q?B=C3=A9rtolo?= <nicolasbertolo@HIDDEN>
Date: Sun, 29 Mar 2020 17:28:10 -0300
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> I don't see it.
I'll try to debug my configuration to see what causes it to flicker more.
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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Nicolas =?UTF-8?Q?B=C3=A9rtolo?= <nicolasbertolo@HIDDEN>
Date: Sun, 29 Mar 2020 17:58:51 -0300
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> I don't see it.
I have found that creating a child frame causes it to flicker a lot more.
Here is a video that shows what happens https://youtu.be/BsUqPpyAvVQ
To reproduce it:
1) Start runemacs -Q
2) Open a big C/C++ file (I used dispextern.h from emacs)
3) Run this code to create the child frame (in the scratch buffer)
(defun open-test ()
(display-buffer-in-child-frame (get-buffer-create "test child-frame")
'((child-frame-parameters . ((width . 20)
(height . 10)
(top . 200)
(left . 100))))=
))
4) In the C/C++ buffer eval (open-test)
5) Scroll with the mouse wheel up and down.
I don't know if this is the same bug or if it's related.
El dom., 29 mar. 2020 a las 14:25, Eli Zaretskii (<eliz@HIDDEN>) escribi=
=C3=B3:
>
> > Date: Sun, 29 Mar 2020 13:11:20 -0300
> > From: Nicolas Bertolo <nicolasbertolo@HIDDEN>
> > Bcc: <nicolasbertolo@HIDDEN>
> >
> > 1) Open a long C++ file.
> >
> > 2) Run (setq mouse-wheel-scroll-amount '(1)).
> >
> > 3) Mouse the mouse whell up and down fast.
> >
> > 4) Pay attention to the part of the screen that should show new content=
.
> >
> > Sometimes it will flicker a few time before stabilizing.
>
> I don't see it.
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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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> From: Nicolas BĂ©rtolo <nicolasbertolo@HIDDEN>
> Date: Sun, 29 Mar 2020 17:58:51 -0300
> Cc: 40278 <at> debbugs.gnu.org
>
> > I don't see it.
>
> I have found that creating a child frame causes it to flicker a lot more.
> Here is a video that shows what happens https://youtu.be/BsUqPpyAvVQ
>
> To reproduce it:
> 1) Start runemacs -Q
> 2) Open a big C/C++ file (I used dispextern.h from emacs)
> 3) Run this code to create the child frame (in the scratch buffer)
>
> (defun open-test ()
> (display-buffer-in-child-frame (get-buffer-create "test child-frame")
> '((child-frame-parameters . ((width . 20)
> (height . 10)
> (top . 200)
> (left . 100))))))
> 4) In the C/C++ buffer eval (open-test)
> 5) Scroll with the mouse wheel up and down.
It doesn't flicker here, sorry.
Does anyone else see this?
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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Noam Postavsky <npostavs@HIDDEN>
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Date: Mon, 30 Mar 2020 12:23:42 -0400
In-Reply-To: <834ku63pj1.fsf@HIDDEN> (Eli Zaretskii's message of "Mon, 30 Mar
2020 17:06:58 +0300")
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>> To reproduce it:
>> 1) Start runemacs -Q
>> 2) Open a big C/C++ file (I used dispextern.h from emacs)
>> 3) Run this code to create the child frame (in the scratch buffer)
>>
>> (defun open-test ()
>> (display-buffer-in-child-frame (get-buffer-create "test child-frame")
>> '((child-frame-parameters . ((width . 20)
>> (height . 10)
>> (top . 200)
>> (left . 100))))))
>> 4) In the C/C++ buffer eval (open-test)
>> 5) Scroll with the mouse wheel up and down.
>
> It doesn't flicker here, sorry.
>
> Does anyone else see this?
I can see it here, especially on scroll towards the beginning of the
file (Emacs is maxing out the CPU while doing this). It kind of looks
like the rectangle beneath the child frame gets repainted separately
from the rest.
In GNU Emacs 27.0.90 (build 1, x86_64-w64-mingw32)
of 2020-03-30 built on VHOST2
Repository revision: c6e0981b96eaa12c28b70c949ccd6e426c13df4d
Repository branch: emacs-27
Windowing system distributor 'Microsoft Corp.', version 10.0.18363
System Description: Microsoft Windows 10 Home (v10.0.1909.18363.720)
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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Eli Zaretskii <eliz@HIDDEN>
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> From: Noam Postavsky <npostavs@HIDDEN>
> Cc: Nicolas Bértolo <nicolasbertolo@HIDDEN>,
> 40278 <at> debbugs.gnu.org
> Date: Mon, 30 Mar 2020 12:23:42 -0400
>
> I can see it here, especially on scroll towards the beginning of the
> file (Emacs is maxing out the CPU while doing this).
If redisplay cannot keep up, you could indeed see partially-redrawn
window. But I didn't understand this was the problem, and it doesn't
sound like "flicker" to me.
> It kind of looks like the rectangle beneath the child frame gets
> repainted separately from the rest.
What do you mean by "beneath" in this context?
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From: Noam Postavsky <npostavs@HIDDEN>
References: <5e80c8ad.1c69fb81.73345.30e9@HIDDEN>
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Date: Mon, 30 Mar 2020 13:15:39 -0400
In-Reply-To: <83o8sd3ifz.fsf@HIDDEN> (Eli Zaretskii's message of "Mon, 30 Mar
2020 19:40:00 +0300")
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Eli Zaretskii <eliz@HIDDEN> writes:
>> From: Noam Postavsky <npostavs@HIDDEN>
>> Cc: Nicolas B=E9rtolo <nicolasbertolo@HIDDEN>,
>> 40278 <at> debbugs.gnu.org
>> Date: Mon, 30 Mar 2020 12:23:42 -0400
>>=20
>> I can see it here, especially on scroll towards the beginning of the
>> file (Emacs is maxing out the CPU while doing this).
>
> If redisplay cannot keep up, you could indeed see partially-redrawn
> window. But I didn't understand this was the problem, and it doesn't
> sound like "flicker" to me.
The "flicker" part is that it looks like the window turns momentarily
completely blank before redrawing.
>> It kind of looks like the rectangle beneath the child frame gets
>> repainted separately from the rest.
>
> What do you mean by "beneath" in this context?
There's occasionally a rectangle which seems to repainted slower than
its surroundings. That rectangle is lower down (closer to my desk than
the ceiling) on my monitor than the child frame. Also, I guess the text
it momentarily contains was previously behind the child frame in terms
of z-order (although it's a bit hard to tell because the repainting is
still too fast to really anything).
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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Eli Zaretskii <eliz@HIDDEN>
In-Reply-To: <85ftdpojb8.fsf@HIDDEN> (message from Noam Postavsky on Mon,
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> From: Noam Postavsky <npostavs@HIDDEN>
> Cc: 40278 <at> debbugs.gnu.org, nicolasbertolo@HIDDEN
> Date: Mon, 30 Mar 2020 13:15:39 -0400
>
> The "flicker" part is that it looks like the window turns momentarily
> completely blank before redrawing.
That could happen if there's nothing in common between the previous
and the new contents of the window. Again, if redisplay cannot keep
up, this is entirely normal, and any flicker related to such situation
is something we cannot do anything about.
> > What do you mean by "beneath" in this context?
>
> There's occasionally a rectangle which seems to repainted slower than
> its surroundings. That rectangle is lower down (closer to my desk than
> the ceiling) on my monitor than the child frame. Also, I guess the text
> it momentarily contains was previously behind the child frame in terms
> of z-order (although it's a bit hard to tell because the repainting is
> still too fast to really anything).
What are the dimensions of that rectangle? Is its width identical to
that of the parent frame, or is it smaller? If smaller, is the width
similar to that of the child frame or different?
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Eli Zaretskii <eliz@HIDDEN> writes:
>> > What do you mean by "beneath" in this context?
>>
>> There's occasionally a rectangle which seems to repainted slower than
>> its surroundings. That rectangle is lower down (closer to my desk than
>> the ceiling) on my monitor than the child frame. Also, I guess the text
>> it momentarily contains was previously behind the child frame in terms
>> of z-order (although it's a bit hard to tell because the repainting is
>> still too fast to really anything).
>
> What are the dimensions of that rectangle? Is its width identical to
> that of the parent frame, or is it smaller? If smaller, is the width
> similar to that of the child frame or different?
The width is similar (equal, as far as I can tell) to the child frame.
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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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> I can see it here, especially on scroll towards the beginning of the
> file (Emacs is maxing out the CPU while doing this
It maxes out here as well but I do not need to display a child frame for
that purpose. Simply scrolling through dispextern.h suffices. Here it
typically pauses for about ten seconds without any flicker though.
> ). It kind of looks
> like the rectangle beneath the child frame gets repainted separately
> from the rest.
I have no idea why this should be related to scrolling. Does any of
these happen with a normal frame put on top of the window you scroll?
martin
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From: Nicolas =?UTF-8?Q?B=C3=A9rtolo?= <nicolasbertolo@HIDDEN>
Date: Tue, 31 Mar 2020 12:51:37 -0300
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> I have no idea why this should be related to scrolling. Does any of
> these happen with a normal frame put on top of the window you scroll?
I think it is not possible to input into a frame that is partially hidden (and
thus not focused) by others in Windows. The mouse wheel does nothing and
keyboard inputs go to the topmost window.
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> From: Nicolas BĂ©rtolo <nicolasbertolo@HIDDEN>
> Date: Tue, 31 Mar 2020 12:51:37 -0300
> Cc: Noam Postavsky <npostavs@HIDDEN>, Eli Zaretskii <eliz@HIDDEN>, 40278 <at> debbugs.gnu.org
>
> > I have no idea why this should be related to scrolling. Does any of
> > these happen with a normal frame put on top of the window you scroll?
>
> I think it is not possible to input into a frame that is partially hidden (and
> thus not focused) by others in Windows. The mouse wheel does nothing and
> keyboard inputs go to the topmost window.
It's possible, but you need to turn on the "active window tracking"
feature. There are tiny programs floating around that allow you to do
that. With that feature turned on, focus follows the mouse, like on X
Window system on Unix.
X-Loop: help-debbugs@HIDDEN
Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Nicolas =?UTF-8?Q?B=C3=A9rtolo?= <nicolasbertolo@HIDDEN>
Date: Tue, 31 Mar 2020 13:10:01 -0300
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> It's possible, but you need to turn on the "active window tracking"
> feature. There are tiny programs floating around that allow you to do
> that. With that feature turned on, focus follows the mouse, like on X
> Window system on Unix.
Thank you for the tip!
Here are my results:
Emacs frame partially covered by an Emacs frame: Nothing happens. Mouse input
does not seem to go anywhere.
Emacs frame partially covered by a Windows explorer window: Emacs scrolls
normally, that is, in my case there is some flickering. But nothing like what
happens with a child frame.
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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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> Emacs frame partially covered by an Emacs frame: Nothing happens. Mouse input
> does not seem to go anywhere.
Might be that here I'm using yet another program to handle that case.
'mouse-wheel-follow-mouse' should not be involved but please make sure
that it's t.
> Emacs frame partially covered by a Windows explorer window: Emacs scrolls
> normally, that is, in my case there is some flickering. But nothing like what
> happens with a child frame.
From what Noam described the flickering could be due to the tool bar.
What happens when you write
(defun open-test ()
(display-buffer-in-child-frame
(get-buffer-create "test child-frame")
'((child-frame-parameters . ((tool-bar-lines . 0)
(width . 20)
(height . 10)
(top . 200)
(left . 100))))))
instead?
martin
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Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Noam Postavsky <npostavs@HIDDEN>
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Date: Wed, 01 Apr 2020 10:25:16 -0400
In-Reply-To: <a89961bc-4be2-20d1-7cc1-3f728fb07951@HIDDEN> (martin rudalics's
message of "Wed, 1 Apr 2020 08:36:15 +0200")
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>> Emacs frame partially covered by an Emacs frame: Nothing happens. Mouse input
>> does not seem to go anywhere.
Seems to work fine for me. I see the "normal" flickering, no slow-paint
rectangle.
>> Emacs frame partially covered by a Windows explorer window: Emacs scrolls
>> normally, that is, in my case there is some flickering. But nothing like what
>> happens with a child frame.
Same here.
martin rudalics <rudalics@HIDDEN> writes:
> What happens when you write
>
> (defun open-test ()
> (display-buffer-in-child-frame
> (get-buffer-create "test child-frame")
> '((child-frame-parameters . ((tool-bar-lines . 0)
> (width . 20)
> (height . 10)
> (top . 200)
> (left . 100))))))
Doesn't make a difference, I still see the slow-paint rectangle.
=======================
At any rate, if I've understood the responses from Eli, it sounds like
there isn't any bug here, just that we haven't implemented double
buffering for Windows.
X-Loop: help-debbugs@HIDDEN
Subject: bug#40278: 27.0.90; Flickering in Windows 10
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From: Nicolas =?UTF-8?Q?B=C3=A9rtolo?= <nicolasbertolo@HIDDEN>
Date: Wed, 1 Apr 2020 17:39:06 -0300
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> From what Noam described the flickering could be due to the tool bar.
> What happens when you write
>
> (defun open-test ()
> (display-buffer-in-child-frame
> (get-buffer-create "test child-frame")
> '((child-frame-parameters . ((tool-bar-lines . 0)
> (width . 20)
> (height . 10)
> (top . 200)
> (left . 100))))))
>
> instead?
No difference here.
> At any rate, if I've understood the responses from Eli, it sounds like
> there isn't any bug here, just that we haven't implemented double
> buffering for Windows.
This may be the reason indeed.
Received: (at control) by debbugs.gnu.org; 6 Apr 2020 01:21:53 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Sun Apr 05 21:21:53 2020 Received: from localhost ([127.0.0.1]:46954 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1jLGSX-0002DA-0b for submit <at> debbugs.gnu.org; Sun, 05 Apr 2020 21:21:53 -0400 Received: from mail-qt1-f174.google.com ([209.85.160.174]:43363) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <npostavs@HIDDEN>) id 1jLGSV-0002Cj-C6 for control <at> debbugs.gnu.org; Sun, 05 Apr 2020 21:21:51 -0400 Received: by mail-qt1-f174.google.com with SMTP id a5so11625249qtw.10 for <control <at> debbugs.gnu.org>; Sun, 05 Apr 2020 18:21:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:subject:date:message-id:mime-version; bh=3aScq3J0vfz98l1X+y7MGqtGwIVqrRi/21mH/fOVm1A=; b=ffW3eyT++pxxgIvlTDeH+gsCCymykPc38BJ+DfFeurx43UDUJfplm2A93oZTTSMScY 6kSRr6unYrTU9FGropT9DWXx7BTC0JV/XLcDL+WidUD9uVG208mVaiYLzlSHuSyyOH+r ryZsWWOq9ZMyMQj/4qRab6R+nPdvm67t/Gn9D4fn9iRXtHtAS0OP1ZBci9MYQ+JbNHCF OQhBLJn2QPKQvDqgPdZD5hFMiAHB0tmLSvFgHtGk6qhdZP9bZOPflFWUhXxbu2Y4Bzll EID5NAXx0cbI59LnqKySC/28kEecwATWAAchMBs3Ya/0sBrw0Vlc+xQN9UTLOie3TV+V 78sQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:subject:date:message-id:mime-version; bh=3aScq3J0vfz98l1X+y7MGqtGwIVqrRi/21mH/fOVm1A=; b=WR487HtBzzzHYoE9SInXlhbIV5fv+YcNUZPjWRRXILlsoSMesVg9bA78t3jr3MCK5c pOsda/XiKWM5hzxtJdmZeCFNoaOUiH5BsfJZW44peLzVw5+EUoVtuqw0giKeicFk5/jr tTcjyiHP/BVbejzPPEVswrmvpX1WU+jp7N5R/PfROnPWOwBXJdw4z8+bFhXo2BRdoHkd 2hyKvry8rvihMEDYLG1as45DnnPnkkvzks1lxr2RLBThZC9PTCEBC+Jv2e48L1I3Outp 6uqxyFZgscldWDwbSfhkaByEXWOqJInSFbDVZjcmkqJhBAsJlEyfbY9ZLd2YvVaVyhl7 samg== X-Gm-Message-State: AGi0PubRYIG6Q8rY9a/CXSlaToeHKJkqyaSRgwFOotRchTlrTjb8xwvg tB0DQwxgSowhcsz+9OiM/sxeNK5K X-Google-Smtp-Source: APiQypKnd8YD10ofuvtOlxclbsI2znOmzx7EO2yzDYa6m6BtM3ODvmbGcWVzpGxHKW2lcsLr4ACNFQ== X-Received: by 2002:ac8:2c51:: with SMTP id e17mr18658145qta.290.1586136105841; Sun, 05 Apr 2020 18:21:45 -0700 (PDT) Received: from minid (cbl-45-2-119-47.yyz.frontiernetworks.ca. [45.2.119.47]) by smtp.gmail.com with ESMTPSA id u13sm13234877qku.92.2020.04.05.18.21.45 for <control <at> debbugs.gnu.org> (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sun, 05 Apr 2020 18:21:45 -0700 (PDT) From: Noam Postavsky <npostavs@HIDDEN> To: control <at> debbugs.gnu.org Subject: control message for bug #40278 Date: Sun, 05 Apr 2020 21:21:44 -0400 Message-ID: <87a73ph0if.fsf@HIDDEN> MIME-Version: 1.0 Content-Type: text/plain X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) retitle 40278 Flickering in Windows 10 (not double buffered) severity 40278 wishlist quit
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