Home
Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages

CentOS 7.0 - man page for sdl_joystickgetball (centos section 3)

SDL_JoystickGetBall(3)				  SDL API Reference			       SDL_JoystickGetBall(3)

NAME
SDL_JoystickGetBall - Get relative trackball motion
SYNOPSIS
#include "SDL.h" 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, &delta_x, &delta_y)==-1) printf("TrackBall Read Error! "); printf("Trackball Delta- X:%d, Y:%d ", delta_x, delta_y);
SEE ALSO
SDL_JoystickNumBalls
SDL
Tue 11 Sep 2001, 23:00 SDL_JoystickGetBall(3)


All times are GMT -4. The time now is 07:38 PM.

Unix & Linux Forums Content Copyright 1993-2018. All Rights Reserved.
UNIX.COM Login
Username:
Password:  
Show Password