SDL Wiki
(This is the legacy documentation for SDL2, the previous stable version; SDL3 is the current stable version.)

SDL_JoystickNumBalls

Get the number of trackballs on a joystick.

Header File

Defined in SDL_joystick.h

Syntax

int SDL_JoystickNumBalls(SDL_Joystick *joystick);

Function Parameters

SDL_Joystick * joystick an SDL_Joystick structure containing joystick information.

Return Value

(int) Returns the number of trackballs on success or a negative error code on failure; call SDL_GetError() for more information.

Remarks

Joystick trackballs have only relative motion events associated with them and their state cannot be polled.

Most joysticks do not have trackballs.

Version

This function is available since SDL 2.0.0.

See Also

CategoryAPI, CategoryAPIFunction, CategoryJoystick

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