//// "$Id: connect.cxx,v 1.1.1.1 2003/08/07 21:18:42 jasonk Exp $"//// PPP example program for the Fast Light Tool Kit (FLTK).//// Program to make a button to turn a ppp connection on/off.// You must chmod +s /usr/sbin/pppd, and put all the options// into /etc/ppp/options.//// Copyright 1998-1999 by Bill Spitzak and others.//// This library is free software; you can redistribute it and/or// modify it under the terms of the GNU Library General Public// License as published by the Free Software Foundation; either// version 2 of the License, or (at your option) any later version.//// This library is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU// Library General Public License for more details.//// You should have received a copy of the GNU Library General Public// License along with this library; if not, write to the Free Software// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307// USA.//// Please report all bugs and problems to "fltk-bugs@easysw.com".//#include <stdlib.h>#include <stdio.h>#include <unistd.h>#include <signal.h>#include <sys/wait.h>#include <FL/Fl.H>#include <FL/Fl_Window.H>#include <FL/Fl_Toggle_Button.H>int running;	// actually the pidFl_Toggle_Button *Button;void sigchld(int) {  waitpid(running, 0, 0);  running = 0;  Button->value(0);}void cb(Fl_Widget *o, void *) {  if (((Fl_Toggle_Button*)o)->value()) {    if (running) return;    running = fork();    if (!running) execl("/usr/sbin/pppd","pppd","-detach",0);    else signal(SIGCHLD, sigchld);  } else {    if (!running) return;    kill(running, SIGINT);    waitpid(running, 0, 0);    running = 0;  }}int main(int argc, char ** argv) {   Fl_Window window(100,50);   Fl_Toggle_Button button(0,0,100,50,"Connect");   Button = &button;   button.color(1,2);   button.callback(cb,0);   window.show(argc,argv);   return Fl::run();}//// End of "$Id: connect.cxx,v 1.1.1.1 2003/08/07 21:18:42 jasonk Exp $".//