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NAMESDL_JoystickNumBalls - Get the number of joystick trackballs SYNOPSIS#include "SDL.h" int SDL_JoystickNumBalls(SDL_Joystick *joystick); DESCRIPTIONReturn the number of trackballs available from a previously opened SDL_Joystick. RETURN VALUENumber of trackballs. SEE ALSOSDL_JoystickGetBall, SDL_JoystickOpen
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