[Bug 41258] UE4 applications crash with "Assertion failed: Count >= 0" ( Epic Games Launcher, Paragon)

[wine-bugs at winehq.org]

https://bugs.winehq.org/show_bug.cgi?id=41258

--- Comment #12 from Louis Lenders <xerox_xerox2000 at yahoo.co.uk> ---
Created attachment 58043
  --> https://bugs.winehq.org/attachment.cgi?id=58043
sad and poor and completely wrong hacks, only to pinpoint the bug

@wineluukku: I got that too, but i`m now able to get the window up with the
poor hacks from the attachments (which are quite wrong, but the app starts to
run)

I used LIBGL_ALWAYS_SOFTWARE=1 wine EpicGamesLauncher.exe and also set the
registrykey MaxVersionGL to 30002 (hexadecimal)

With the hacks the launcher starts to download things but than fails,
apparently because .NET is not installed. Needs further testing.

AFAICT three bugs to solve:

1. EnumDisplayMonitors (or the like) might return wrong stuff?
2. Undocumented  IsThreadDesktopComposited needs stubbed
e. Undocumented SetWindowCompositionAttribute needs stubbed

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