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SDL_JoystickGetBall(3)
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SDL_!JoystickGetBall !!!SDL_!JoystickGetBall NAME SYNOPSIS DESCRIPTION RETURN VALUE EXAMPLES SEE ALSO ---- !!NAME SDL_!JoystickGetBall- Get relative trackball motion !!SYNOPSIS __#include __ __int SDL_!JoystickGetBall__(__SDL_Joystick *joystick, int ball, int *dx, int *dy__); !!DESCRIPTION Get the __ball__ axis change. Trackballs can only return relative motion since the last call to __SDL_!JoystickGetBall__, these motion deltas a placed into __dx__ and __dy__. !!RETURN VALUE Returns __0__ on success or __-1__ on failure !!EXAMPLES int delta_x, delta_y; SDL_Joystick *joy; . . . SDL_!JoystickUpdate(); if(SDL_!JoystickGetBall(joy, 0, !!SEE ALSO __SDL_!JoystickNumBalls__ ----
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