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Bug 4959

Summary: Getting mouse ID == 0 from touch events
Product: SDL Reporter: Marius Elvert <marius.elvert>
Component: videoAssignee: Sam Lantinga <slouken>
Status: NEW --- QA Contact: Sam Lantinga <slouken>
Severity: normal    
Priority: P2    
Version: 2.0.10   
Hardware: x86_64   
OS: Windows 10   

Description Marius Elvert 2020-01-24 15:10:04 UTC 
This is on a microsoft surface 2017 on Windows 10.

When using the touch input, most of the mouse events I'm getting are marked with SDL_TOUCH_MOUSEID, but I also get a few with mouse ID equal to 0 regularly. This is for motion, button-down and button-up events.

It worked fine a while ago when I last tested it with SDL 2.0.9. I cannot say whether a windows update or the SDL update caused this.