a69425441a
git-svn-id: file:///fltk/svn/fltk/branches/branch-1.3@7727 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
87 lines
2.6 KiB
C++
87 lines
2.6 KiB
C++
//
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// "$Id:$"
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//
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// How to parse command line arguments - Duncan Gibson 2010-10-23
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// First posted in http://www.fltk.org/newsgroups.php?gfltk.general+v:31449
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//
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// Shows how to decode additional command line arguments using Fl::args()
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// on top of the "standard" options used by the toolkit itself.
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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#include <FL/Fl.H>
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#include <FL/Fl_Box.H>
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#include <FL/Fl_Window.H>
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#include "stdio.h"
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#include "string.h"
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int helpFlag = 0;
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char *optionString = 0;
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int arg(int argc, char **argv, int &i)
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{
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if (strcmp("-h", argv[i]) == 0 || strcmp("--help", argv[i]) == 0) {
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helpFlag = 1;
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i += 1;
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return 1;
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}
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if (strcmp("-o", argv[i]) == 0 || strcmp("--option", argv[i]) == 0) {
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if (i < argc-1 && argv[i+1] != 0) {
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optionString = argv[i+1];
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i += 2;
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return 2;
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}
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}
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return 0;
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}
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int main(int argc, char** argv)
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{
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int i = 1;
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if (Fl::args(argc, argv, i, arg) < argc)
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// note the concatenated strings to give a single format string!
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Fl::fatal("error: unknown option: %s\n"
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"usage: %s [options]\n"
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" -h | --help : print extended help message\n"
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" -o | --option # : example option with parameter\n"
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" plus standard fltk options\n",
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argv[i], argv[0]);
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if (helpFlag)
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Fl::fatal("usage: %s [options]\n"
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" -h | --help : print extended help message\n"
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" -o | --option # : example option with parameter\n"
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" plus standard fltk options:\n"
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"%s\n",
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argv[0], Fl::help);
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Fl_Window* mainWin = new Fl_Window(300, 200);
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Fl_Box* textBox = new Fl_Box(0, 0, 300, 200);
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if (optionString != 0)
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textBox->label(optionString);
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mainWin->show(argc, argv);
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return Fl::run();
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}
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//
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// End of "$Id:$".
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//
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