[Bug 18006] Mp3tag: Crash when using Tag Sources feature

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=18006





--- Comment #8 from Nikolay Sivov <bunglehead at gmail.com>  2009-06-07 09:38:48 ---
(In reply to comment #7)
> 
> I've contacted the author. He said that he is doing (translating from German)
> "in principle the same thing, but the interesting part is probably this":
>
> > On native Windows this message is only sent, when there is at least one 
> > column to display text. This is not the case in Wine where the message is 
> > also sent for Listviews which have no columns at all.
> 
> I guess the crash happens because the program relies on this behavior.
> 

Unfortunately this doesn't bring new information for me cause test was written
exactly about it. If I understand him right we are talking about
LVM_INSERTCOLUMN message which he (author) doesn't send. That's how I got a
phrase:
---
when there is at least one column to display text
---
means "I've sent LVM_INSERTCOLUMN at least once".

If it means something else please let me know.

> Can somebody confirm that LVN_GETDISPINFO is always sent in Wine, even for
> empty list views? Unfortunately I have no idea how to test it.

Of course not. LVN_GETDISPINFO is sent to parent when an item info is requested
by control - for display or as message request (like LVM_GEITEMTEXT in attached
test). So there's no reason to sent it on empty list, if only we don't check
itemcount somewhere - I'll check it once more.

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