[Boost-users] Program Options: Omit positional arguments from help

Subject: [Boost-users] Program Options: Omit positional arguments from help
From: Florian Lindner (mailinglists_at_[hidden])
Date: 2015-10-28 10:07:58

Hello,

I have this piece of code:

void getOptions(int argc, char *argv[])
{
  namespace po = boost::program_options;
  po::options_description desc("Artificial testing tool.");
  desc.add_options()
    ("help", "produce help")
    ("participant", po::value<std::string>(), "Participant Name");
  po::positional_options_description pd;
  pd.add("participant", 1);

  po::variables_map vm;        
  
//po::store(po::parse_command_line(argc, argv, desc), vm);
  po::store(po::command_line_parser(argc, 
argv).options(desc).positional(pd).run(), vm);

  po::notify(vm);

  if (vm.count("help")) {
    std::cout << desc << std::endl;
    return;
  }
  
}

First question: Is the usage of po::store correct that way? I've found it 
somehwere on the internet but the documentation mentions no alternative 
parser call when using positional arguments.

Main question: When using help it still displays --participant, albeit it's 
only a placeholder for the positional argument. Is there a way to hide a 
options or what is the correct way?

Thanks,
Florian