[Bug 3930] HOMM/Deadlock shows black screen (game DLL calls SuspendThread inside WOM_OPEN winmm callback)

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=3930

--- Comment #87 from Damjan Jovanovic  ---
(In reply to Dmitry Timoshkov from comment #86)
> Created attachment 78138 [details]
> patch
>
> Something like this may work.

That doesn't work, because GetCurrentThread() only returns a pseudo handle, "a
special constant that is interpreted as the current thread handle" (MSDN). I
think we have to compare the globally unique thread IDs to be sure:

---snip---
    if (GetCurrentThreadId() == GetThreadId(thread) && (GetVersion() &
0x80000000))
        return 0;
---snip---

That fixes all the tests, but doesn't fully fix the game: it no longer
deadlocks and even plays music (it was silently frozen before), but shows badly
corrupted video (bottom ~2/3 of the screen are black, and the top 1/3 has
randomly colored pixels), which makes it completely unplayable. Running it with
"wine HEROES.EXE /s0" (which disables all sound) gets the graphics fully
functional. This however, seems to be a separate issue, probably a regression
as this WINMM fix was enough in earlier Wine versions, but now isn't.