02-26-2002
i was able to make a father and his son communicate through a pipe but the real problem is: in my example i have no control over when a process is created so i have no control over who is reading and/or writing to a pipe at a certain moment in time.
And i need to have some sort of control of that so i can send data from one process to it's sons and viceversa. How can i achieve that? I believe the most simple method would be using signals to tell the parent when a child is created so that the parent can start writing in the pipe and the child can read from it, but i'm totally lost here.
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LEARN ABOUT OPENSOLARIS
sdl_joystickopen
SDL_JoystickOpen(3) SDL API Reference SDL_JoystickOpen(3)
NAME
SDL_JoystickOpen - Opens a joystick for use.
SYNOPSIS
#include "SDL.h"
SDL_Joystick *SDL_JoystickOpen(int index);
DESCRIPTION
Opens a joystick for use within SDL. The index refers to the N'th joystick in the system. A joystick must be opened before it game be used.
RETURN VALUE
Returns a SDL_Joystick structure on success. NULL on failure.
EXAMPLES
SDL_Joystick *joy;
// Check for joystick
if(SDL_NumJoysticks()>0){
// Open joystick
joy=SDL_JoystickOpen(0);
if(joy)
{
printf("Opened Joystick 0
");
printf("Name: %s
", SDL_JoystickName(0));
printf("Number of Axes: %d
", SDL_JoystickNumAxes(joy));
printf("Number of Buttons: %d
", SDL_JoystickNumButtons(joy));
printf("Number of Balls: %d
", SDL_JoystickNumBalls(joy));
}
else
printf("Couldn't open Joystick 0
");
// Close if opened
if(SDL_JoystickOpened(0))
SDL_JoystickClose(joy);
}
SEE ALSO
SDL_JoystickClose
SDL
Tue 11 Sep 2001, 23:00 SDL_JoystickOpen(3)