SDL_GetNumJoystickBalls3
Get the number of trackballs on a joystick.
Usage
#include "SDL3/SDL.h"
int SDL_GetNumJoystickBalls(SDL_Joystick *joystick);
Header file
Defined in SDL3/SDL_joystick.h
Overview
Joystick trackballs have only relative motion events associated with them and their state cannot be polled.
Most joysticks do not have trackballs.
Function parameters
- joystick
-
an
SDL_Joystick
structure containing joystick information.
Return value
Returns the number of trackballs on success or -1 on failure; call
SDL_GetError () for more information.