###### (This is the legacy documentation for SDL2, the previous stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current stable version.) # SDL_JoystickSetLED Update a joystick's LED color. ## Header File Defined in [SDL_joystick.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_joystick.h) ## Syntax ```c int SDL_JoystickSetLED(SDL_Joystick *joystick, Uint8 red, Uint8 green, Uint8 blue); ``` ## Function Parameters | | | | | ------------------------------ | ------------ | ------------------------------- | | [SDL_Joystick](SDL_Joystick) * | **joystick** | The joystick to update. | | Uint8 | **red** | The intensity of the red LED. | | Uint8 | **green** | The intensity of the green LED. | | Uint8 | **blue** | The intensity of the blue LED. | ## Return Value (int) Returns 0 on success, -1 if this joystick does not have a modifiable LED. ## Remarks An example of a joystick LED is the light on the back of a PlayStation 4's DualShock 4 controller. ## Version This function is available since SDL 2.0.14. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryJoystick](CategoryJoystick)