[Bug 6111] New: Regression in Wine riched20 causes text to flicker when typing in KeyNote

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=6111

Summary: Regression in Wine riched20 causes text to flicker when
                    typing in KeyNote
           Product: Wine
           Version: 0.9.18.
          Platform: PC
               URL: http://internap.dl.sourceforge.net/sourceforge/keynote/k
                    ntsetup_165.exe
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: wine-richedit
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]
                CC: [e-mail]

A regression in wine 0.9.18 causes text entered into the open-source KeyNote
(http://keynote.sf.net) to flicker when typing. I regression-tested it using git
bisect and got this as the problem patch:

alex@ubuntu:~/Base/wine-git$ git bisect bad
658c0cdd1a5fa19300a09ae4ef6d59c06dcecd0c is first bad commit
diff-tree 658c0cdd1a5fa19300a09ae4ef6d59c06dcecd0c (from
bf4e00fd9bb0188df43d09720cf6ca4c5efb184a)
Author: Matt Finnicum 
Date:   Tue Aug 8 16:08:43 2006 -0400

riched20: Implement EM_SHOWSCROLLBAR, EM_SETSCROLLPOS, ES_DISABLENOSCROLL,
and WS_VSCROLL.

:040000 040000 363d8b0bc198c704765ce857751b1ce80d2d69b4
163d233f47ba4d4edd52b06a392ea578c6a53936 M      dlls

The attached movie demonstrates the problem. Because of the framerate of the
capture, the flicker is exaggarated - what really happens is that every time you
press a key, all your text are flicker for a microsecond, but it's still bloody
annoying to type that way. Of course, the problem still exists in the most
recent Wine release (0.9.20)

To reproduce this bug, install keynote from the given link and launch it. It
should open with the default sample note showing (if not, sample.knt is in the
same directory as keynote.exe; load it.). Just start typing into the text pane
and the text will flicker.