GNU bug report logs - #5571
23.1.92; scroll bar disappears when dragging an edge between mode lines horizontally

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>
To: bug-gnu-emacs <at> gnu.org
Subject: 23.1.92;
	scroll bar disappears when dragging an edge between mode lines
	horizontally
Date: Sat, 13 Feb 2010 17:04:21 +0900

Steps to reproduce:

  1. emacs -Q
  2. C-x 3
  (2.5. Optionally, C-x o followed by C-x 2)
  3. Drag the edge between the mode lines at the bottom center in
     order to move the scroll bar horizontally.

Result:

  The scroll bar at the center disappears until you stop dragging.
  This does not happen when GDK_NATIVE_WINDOWS=1.

				     YAMAMOTO Mitsuharu
				mituharu <at> math.s.chiba-u.ac.jp

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
For information about debugging Emacs, please read the file
/usr/local/share/emacs/23.1.92/etc/DEBUG.


In GNU Emacs 23.1.92.1 (i686-pc-linux-gnu, GTK+ Version 2.18.3)
 of 2010-02-13 on mituharu-laptop
Windowing system distributor `The X.Org Foundation', version 11.0.10604000
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Major mode: Fundamental

Minor modes in effect:
  tooltip-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  blink-cursor-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <help-echo> <help-echo> <help-echo> 
<help-echo> <help-echo> <menu-bar> <help-menu> <se
nd-emacs-bug-report>

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Load-path shadows:
None found.

Features:
(shadow sort mail-extr message sendmail regexp-opt ecomplete rfc822 mml
easymenu mml-sec password-cache mm-decode mm-bodies mm-encode mailcap
mail-parse rfc2231 rfc2047 rfc2045 qp ietf-drums mailabbrev nnheader
gnus-util netrc time-date mm-util mail-prsvr gmm-utils wid-edit
mailheader canlock sha1 hex-util hashcash mail-utils emacsbug japan-util
tooltip ediff-hook vc-hooks lisp-float-type mwheel x-win x-dnd
font-setting tool-bar dnd fontset image fringe lisp-mode register page
menu-bar rfn-eshadow timer select scroll-bar mldrag mouse jit-lock
font-lock syntax facemenu font-core frame cham georgian utf-8-lang
misc-lang vietnamese tibetan thai tai-viet lao korean japanese hebrew
greek romanian slovak czech european ethiopic indian cyrillic chinese
case-table epa-hook jka-cmpr-hook help simple abbrev loaddefs button
minibuffer faces cus-face files text-properties overlay md5 base64
format env code-pages mule custom widget hashtable-print-readable
backquote make-network-process dbusbind system-font-setting
font-render-setting gtk x-toolkit x multi-tty emacs)

Message #10 received at 5571-done <at> debbugs.gnu.org (full text, mbox):

From: Jan Djärv <jan.h.d <at> swipnet.se>
To: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>
Cc: 5571-done <at> debbugs.gnu.org
Subject: Re: bug#5571: 23.1.92;	scroll bar disappears when dragging an edge
	between mode lines	horizontally
Date: Sat, 13 Feb 2010 13:59:01 +0100

YAMAMOTO Mitsuharu skrev:
> Steps to reproduce:
> 
>   1. emacs -Q
>   2. C-x 3
>   (2.5. Optionally, C-x o followed by C-x 2)
>   3. Drag the edge between the mode lines at the bottom center in
>      order to move the scroll bar horizontally.
> 
> Result:
> 
>   The scroll bar at the center disappears until you stop dragging.
>   This does not happen when GDK_NATIVE_WINDOWS=1.
> 

I checked in a fix.  The scroll bar in the middle flickers a lot during drag, 
but at least it doesn't dissapear.

	Jan D.

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