[Bug 27579] The appearance of uTorrent 3.x torrents list is broken

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=27579

Lorenzo Ferrillo <lorenzofer at live.it> changed:

           What    |Removed                     |Added
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                 CC|                            |lorenzofer at live.it

--- Comment #40 from Lorenzo Ferrillo <lorenzofer at live.it> ---
Created attachment 72201
  --> https://bugs.winehq.org/attachment.cgi?id=72201
hack to force it draw

Taking  wine.fixes at gmail.com  comment #37 I made a small hack for others to
use, on the top master that moved a lot of this code to win32u.

Other WM_ERASEBKGND instances of send_message don't use the result at all.
Maybe we shouldn't use it even in this case.

I made it so that send_erase intenrally return TRUE instead of forcing
ps->fErase to be TRUE in  NtUserBeginPaint.

Another possibility is to pass UPDATE_DELAYED_ERASE to send_erase in
NtUserBeginPaint, wtihout modfying the first condition flag the BOOL need_erase
= (flags & UPDATE_DELAYED_ERASE) != 0;
But the send_message was returning 0 so that assginemnt have to gone off.

I wonder if the partial cause is some sort of mishandling of the procedure call
(maybe it's return type) for some (or maybe just Background Erase), as this bug
involve wndproc overrides. 

This also fix the same black box issue with Wrye Bash on the top of wine
staging (in particular th comctl32 patch setting it to version 6. Apparently
from other analysis in this report, that version make wxWidget (that WB use) to
inject a WndProc to that component (unsure if it's just this component override
that got added in the case or all  components) ). 
I will need to check wxWidget source

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