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Bug 1250 - Inconsistent values in SDL_MOUSEWHEEL event
Summary: Inconsistent values in SDL_MOUSEWHEEL event
Status: RESOLVED FIXED
Alias: None
Product: SDL
Classification: Unclassified
Component: events (show other bugs)
Version: HG 2.0
Hardware: x86 Windows 7
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2011-07-23 03:18 UTC by Stepan Zastupov
Modified: 2013-05-21 02:47 UTC (History)
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Description Stepan Zastupov 2011-07-23 03:18:53 UTC 
SDL_MOUSEWHEEL on X11 always reports direction scale equal to 1, while on Win7 (haven't tested on other versions or Mac) it's multiple of 120.

I propose the following solutions:
For Windows: divide it by 120 before filling SDL_MouseWheelEvent. Or, provide a way to query the scale.
For X11: currently, the scale is constant while on Windows it accelerates when a user scroll like crazy. So it would be great to have the acceleration support on X11, if possible.
Comment 1 Sam Lantinga 2013-05-21 02:47:16 UTC 
This is fixed in the current snapshot:
http://www.libsdl.org/tmp/SDL-2.0.zip