[Bug 12701] watchtower library - listview works slow and wrong

http://bugs.winehq.org/show_bug.cgi?id=12701

DrkShadow  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |winehq.10.drkshadow@spamgour
                   |                            |met.com

--- Comment #8 from DrkShadow   2009-01-29 23:05:26 ---
Looking at Wine 1.1.13, listview.c, LISTVIEW_ProcessLetterKeys...

At line 1593 is a call to lstrncmpiW -- the first param is the item name, the
second param is the search text, so

1. the search is always case insensitive
2. the search always begins at the front of the item name

However, it seems like large lists will still have a problem searching. Usually
I see this in file selection dialogs where it searches and then must redraw the
listview with icons. At line 1549 ListView sets the lastKeyPressTimestamp. It
then performs the search. Only 450ms are allowed between keypresses, so if the
search isn't finished in under half a second before the second key can be
processed, the listview will cancel the search and restart a new search with
only the second typed character.

I propose fixing this by duplicating the line at 1549; at line 1604, insert:
/* Update time count _after_ search in case search was slow */
infoPtr->lastKeyPressTimestamp = GetTickCount();

thus, the second key press time is measured _after_ the search ( and event
processing) is complete, and if the search takes excessively long, it won't
affect the second keypress.