[Bug 49142] New: Horizontal mouse scroll events (X11 buttons 6 and 7) should not be translated to back/forward events

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49142

            Bug ID: 49142
           Summary: Horizontal mouse scroll events (X11 buttons 6 and 7)
                    should not be translated to back/forward events
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: winex11.drv
          Assignee: wine-bugs at winehq.org
          Reporter: muzerakascooby at gmail.com
      Distribution: ---

Wine translates X11 buttons 6 and 7 to back/forward events. While these
historically were occasionally mapped to back/forward buttons on mice, nowadays
the overwhelming standard is to use 6/7 exclusively for horizontal scrolling,
and 8/9 for back and forward buttons (which wine also maps to these events).
The existing behaviour makes some applications more painful than necessary to
use on laptops with touchpads, as horizontal scrolling (a normally quite
harmless activity) can be triggered quite easily by accident when scrolling
vertically, causing back and forward events (which are considerably less
harmless) to be sent.

I understand that there has only been a standard in Windows for horizontal
scrolling since Vista, so I understand if implementing this is unfeasible. But
horizontal scroll events should NOT be translated into back/forward events.

I believe the culprit to be mouse.c lines 77/78, 90/91, 103/104, and 116/117
(as of 7afa53c0f20aa40f0d13c81a7d20b523f62f99ab).

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