A variable controlling the polling interval for asynchronous joystick updates.
Defined in <SDL3/SDL_hints.h>
#define SDL_HINT_JOYSTICK_ASYNC_UPDATE_INTERVAL "SDL_JOYSTICK_ASYNC_UPDATE_INTERVAL"If this hint is set to "-1" (the default), asynchronous joystick updates will be triggered when the event loop runs. Otherwise this value is the polling interval, in milliseconds, for asynchronous joystick updates.
Regardless of the value of this hint, you can trigger an update at a specific time using SDL_UpdateJoysticks()
This hint can be set anytime.
This hint is available since SDL 3.6.0.