NAME

       SDL_GetJoystickBall - Get the ball axis change since the last poll.

SYNOPSIS

       #include <SDL3/SDL_joystick.h>

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

DESCRIPTION

       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.

FUNCTION PARAMETERS

       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.

RETURN VALUE

       for more information.

AVAILABILITY

       This function is available since SDL 3.2.0.

SEE ALSO

       SDL_GetNumJoystickBalls(3)

Simple Directmedia Layer                           SDL 3.2.20                             SDL_GetJoystickBall(3)