//// "$Id: button.cxx,v 1.1.1.1 2003/08/07 21:18:42 jasonk Exp $"//// Button/callback test program for the Fast Light Tool Kit (FLTK).//// Copyright 1998-1999 by Bill Spitzak and others.//// This library is free software; you can redistribute it and/or// modify it under the terms of the GNU Library General Public// License as published by the Free Software Foundation; either// version 2 of the License, or (at your option) any later version.//// This library is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU// Library General Public License for more details.//// You should have received a copy of the GNU Library General Public// License along with this library; if not, write to the Free Software// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307// USA.//// Please report all bugs and problems to "fltk-bugs@easysw.com".//#include <stdlib.h>#include <stdio.h>#include <FL/Fl.H>#include <FL/Fl_Window.H>#include <FL/Fl_Button.H>void beepcb(Fl_Widget *, void *) {  printf("\007"); fflush(stdout);}void exitcb(Fl_Widget *, void *) {  exit(0);}#if 0// test Fl::add_fd()...void stdin_cb(int, void*) {  char buf[1000];  gets(buf);  printf("stdin callback\n");}#endifint main(int argc, char ** argv) {  Fl_Window *window = new Fl_Window(320,65);  Fl_Button *b1 = new Fl_Button(20, 20, 80, 25, "&Beep");  b1->callback(beepcb,0);  /*Fl_Button *b2 =*/ new Fl_Button(120,20, 80, 25, "&no op");  Fl_Button *b3 = new Fl_Button(220,20, 80, 25, "E&xit");  b3->callback(exitcb,0);  window->end();  window->show(argc,argv);#if 0  Fl::add_fd(0, stdin_cb);#endif  return Fl::run();}//// End of "$Id: button.cxx,v 1.1.1.1 2003/08/07 21:18:42 jasonk Exp $".//