[Bug 49786] Horizontal scrolling stopped working - regression in 5.8/5.9+

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49786

--- Comment #8 from Murray Colpman  ---
Incidentally I'd be interested to find out if horizontal scrolling works
out-of-the-box in modern versions of Windows in this game! It's possible that
there's some "compatibility" horizontal scrolling events which we should be
generating but aren't, because I believe horizontal scrolling was only
supported properly in Windows since Vista (and given I had a horizontally
scrolling mouse with XP I don't know how it worked before the official support
was introduced...).