https://bugs.winehq.org/show_bug.cgi?id=54099
--- Comment #5 from Alexandre Julliard julliard@winehq.org --- (In reply to Fabian Maurer from comment #4)
(In reply to Alexandre Julliard from comment #3)
Using a Win32 pipe as Unix stdout is not supported, and didn't work previously either.
I see, But wouldn't that be useful for integration?
Sure, but it would be fairly complicated to support. I don't think it's worth the trouble. From a Winelib app you can always create a Unix pipe and allocate a Win32 handle for it.