SDL_GetJoystickBall - Man Page

Defined in SDL3/SDL_joystick.h

#include "SDL3/SDL.h"

bool SDL_GetJoystickBall(SDL_Joystick *joystick, int ball, int *dx, int *dy);

Trackballs can only return relative motion since the last call to

SDL_GetJoystickBall (), these motion deltas are placed into dx and dy .

Most joysticks do not have trackballs.

joystick

the SDL_Joystick
to query.

ball

the ball index to query; ball indices start at index 0.

dx

stores the difference in the x axis position since the last poll.

dy

stores the difference in the y axis position since the last poll.

Returns true on success or false on failure; call

SDL_GetError () for more information.

This function is available since SDL 3.2.0.

·(3), SDL_GetNumJoystickBalls(3)

SDL_GetNumJoystickBalls(3).