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

[wine-bugs at winehq.org]

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





--- Comment #12 from Igor Tarasov <tarasov.igor at gmail.com>  2009-02-01 08:34:11 ---
The patch works, but kinda weird. It searches when I type "a", "ab", but when I
add "r" it cant find anything, while there are dozen of words starting with
"abr" in the list. I just don't understand how is this possible.

And typing letters quickly does not help. Sometimes it helps (maximim 2 letters
at once), but generally it makes full search for each typed in letter (if you
type 3 letters quickly it does 3 full searches).

And regarding slowdowns. I was curious, does native comctl32 fetches each item
in cycle via notification when searching. So, I've installed native comctl32
and made a test run generating +message log. I've launched the application,
opened that listview, entered couple of letters, closed it. With native comctl
log size was ~4,5 Mb.

So, I did the same with builtin version. The final log was 360+Mb. It's clear
that virtual listview should not send that crazy amount of messages. BTW, most
part of that log (over 300+) was generated after I closed that listview.

That means that I was right, now we have to avoid that it virtual listviews
will get quick.


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