Provided by: libsdl3-doc_3.2.20+ds-2_all 

NAME
SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS - A variable that lets you enable joystick (and gamecontroller)
events even when your app is in the background.
SYNOPSIS
#include <SDL3/SDL_hints.h>
#define SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS "SDL_JOYSTICK_ALLOW_BACKGROUND_EVENTS"
DESCRIPTION
The variable can be set to the following values:
• "0": Disable joystick & gamecontroller input events when the application is in the background.
(default)
• "1": Enable joystick & gamecontroller input events when the application is in the background.
This hint can be set anytime.
AVAILABILITY
This hint is available since SDL 3.2.0.
Simple Directmedia Layer SDL 3.2.20 SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS(3)