###### (This is the legacy documentation for SDL2, the previous stable version; [SDL3](https://wiki.libsdl.org/SDL3/) is the current stable version.) # SDL_JoystickSendEffect Send a joystick specific effect packet ## Header File Defined in [SDL_joystick.h](https://github.com/libsdl-org/SDL/blob/SDL2/include/SDL_joystick.h) ## Syntax ```c int SDL_JoystickSendEffect(SDL_Joystick *joystick, const void *data, int size); ``` ## Function Parameters | | | | | ------------------------------ | ------------ | --------------------------------------------- | | [SDL_Joystick](SDL_Joystick) * | **joystick** | The joystick to affect. | | const void * | **data** | The data to send to the joystick. | | int | **size** | The size of the data to send to the joystick. | ## Return Value (int) Returns 0, or -1 if this joystick or driver doesn't support effect packets. ## Version This function is available since SDL 2.0.16. ---- [CategoryAPI](CategoryAPI), [CategoryAPIFunction](CategoryAPIFunction), [CategoryJoystick](CategoryJoystick)