typedef struct{
Uint8 type;
Uint8 which;
Uint8 button;
Uint8 state;
} SDL_JoyButtonEvent;
SDL_JoyButtonEvent is a member of the SDL_Event union and is used when an event of type SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP is reported.
A SDL_JOYBUTTONDOWN or SDL_JOYBUTTONUP event occurs when ever a user presses or releases a button on a joystick. The field which is the index of the joystick that reported the event and button is the index of the button (for a more detailed explaination see the Joystick section). state is the current state or the button which is either SDL_PRESSED or SDL_RELEASED.
SDL_Event, Joystick Functions, SDL_JoystickEventState, SDL_JoystickGetButton