Man page - sdl_hint_mouse_relative_system_scale(3)

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SDL_HINT_MOUSE_RELATIVE_SYSTEM_SCALE - A variable controlling whether the system mouse acceleration curve is used for relative mouse motion.

Defined in SDL3/SDL_hints.h

#include "SDL3/SDL.h"

#define SDL_HINT_MOUSE_RELATIVE_SYSTEM_SCALE SDL_MOUSE_RELATIVE_SYSTEM_SCALE"

The variable can be set to the following values:

• "0": Relative mouse motion will be unscaled. (default)

• "1": Relative mouse motion will be scaled using the system mouse
acceleration curve.

SDL_HINT_MOUSE_RELATIVE_SPEED_SCALE

is set, that will be applied after system speed scale.

This hint can be set anytime.

This hint is available since SDL 3.2.0.