[okular] [Bug 415594] New: Horizontal Mouse Wheel Scrolling (i.e. shitf+scroll) in Windows

[James Flynn]

https://bugs.kde.org/show_bug.cgi?id=415594

            Bug ID: 415594
           Summary: Horizontal Mouse Wheel Scrolling (i.e. shitf+scroll)
                    in Windows
           Product: okular
           Version: 1.8.2
          Platform: MS Windows
                OS: MS Windows
            Status: REPORTED
          Severity: minor
          Priority: NOR
         Component: PDF backend
          Assignee: okular-devel at kde.org
          Reporter: my-kde at duk13.win
  Target Milestone: ---

SUMMARY
Attempting to use the built-in Windows horizontal scroll function (holding
shift then scrolling with a mouse wheel) results in vertical scrolling.

STEPS TO REPRODUCE
1. Open a PDF Document
2. Zoom until the document is able to be scrolled horizontally
3. Hold "Shift" Key and use mouse scroll wheel

OBSERVED RESULT
Document scrolls vertically.

EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: Windows 10
(available in About System)
KDE Frameworks Version: 5.63.0
Qt Version: 5.13.1

ADDITIONAL INFORMATION
Horizontal Scrolling in Windows is a known pain to deal with, so it is likely
something in the windows-specific connections in the port for Okular that the
issue is being introduced. 

I have not yet verified if touchpad 2-finger scrolling allows for horizontal
scrolling (which is the case in some programs with this issue, ie Excel).

In fact, it is possible that the dll patching methods that users have put
together for Excel (see the OfficeScroll project here:
https://github.com/T800G/OfficeScroll) could give an indicator of how to easily
allow for this to be fixed.

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