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Bug 4407 - Mouse position changes while in relative mouse mode SDL_SetRelativeMouseMode
Summary: Mouse position changes while in relative mouse mode SDL_SetRelativeMouseMode
Status: NEW
Alias: None
Product: SDL
Classification: Unclassified
Component: events (show other bugs)
Version: 2.0.9
Hardware: x86 Windows 7
: P2 normal
Assignee: Sam Lantinga
QA Contact: Sam Lantinga
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2018-12-01 16:40 UTC by ihcusk
Modified: 2018-12-01 17:22 UTC (History)
0 users

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Description ihcusk 2018-12-01 16:40:22 UTC 
From https://wiki.libsdl.org/SDL_SetRelativeMouseMode :
"Only relative motion events will be delivered, the mouse position will not change."

After disabling the relative mouse mode and moving the mouse, the cursor is in a different position than where it was before enabling the mode.

Example C program: https://pastebin.com/a2JNrMT8

Windows 7 32-bit, MinGW-w64 GCC 7.3.0, SDL 2.0.9
Comment 1 ihcusk 2018-12-01 16:55:59 UTC 
(In reply to ihcusk from comment #0)
> From https://wiki.libsdl.org/SDL_SetRelativeMouseMode :
> "Only relative motion events will be delivered, the mouse position will not
> change."
> 
> After disabling the relative mouse mode and moving the mouse, the cursor is
> in a different position than where it was before enabling the mode.
> 
> Example C program: https://pastebin.com/a2JNrMT8
> 
> Windows 7 32-bit, MinGW-w64 GCC 7.3.0, SDL 2.0.9

Sorry, I meant:
After disabling the relative mouse mode, the cursor is in a different position than where it was before enabling the mode and moving the mouse.
Comment 2 ihcusk 2018-12-01 17:22:22 UTC 
(In reply to ihcusk from comment #0)
> From https://wiki.libsdl.org/SDL_SetRelativeMouseMode :
> "Only relative motion events will be delivered, the mouse position will not
> change."
> 
> After disabling the relative mouse mode and moving the mouse, the cursor is
> in a different position than where it was before enabling the mode.
> 
> Example C program: https://pastebin.com/a2JNrMT8
> 
> Windows 7 32-bit, MinGW-w64 GCC 7.3.0, SDL 2.0.9

There is an error in the example program. Again, sorry.
Correct version: https://pastebin.com/hLQnkkRP