Query: sdl_joystickgetball
OS: redhat
Section: 3
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
SDL_JoystickGetBall(3) SDL API Reference SDL_JoystickGetBall(3)NAMESDL_JoystickGetBall- Get relative trackball motionSYNOPSIS#include "SDL.h" int SDL_JoystickGetBall(SDL_Joystick *joystick, int ball, int *dx, int *dy);DESCRIPTIONGet 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 VALUEReturns 0 on success or -1 on failureEXAMPLESint delta_x, delta_y; SDL_Joystick *joy; . . . SDL_JoystickUpdate(); if(SDL_JoystickGetBall(joy, 0, &delta_x, &delta_y)==-1) printf("TrackBall Read Error! "); printf("Trackball Delta- X:%d, Y:%d ", delta_x, delta_y);SEE ALSOSDL_JoystickNumBallsSDLTue 11 Sep 2001, 23:00 SDL_JoystickGetBall(3)
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sdl_wasinit(3) - redhat |
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sdl::event(3) - suse |
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