[Boost-users] Re: program_options and ->notify(&your_function)

11 May 2005


      Hi Susan,
...
void Report::PrintName(const string name)
{
    cout << " the log name is " << name << "\n";
}
void Report::InitCmdOpts(void)
{
  try {
    p_opts = new po::options_description("Reporting");
    p_opts->add_options()
      ("log",
         po::value< string >()
            ->default_value("sys.log")
            ->notify( &Report::PrintName))
    ;
In this context the library expects you to pass a function that takes
'string' and returns nothing. However, you pass a member function, which
has implicit 'this' argument. I'd suggest this:

   #include <boost/bind.hpp>

   .....

        ->notify(boost::bind(&Report::PrintName, this, _1))

HTH,
Volodya

[Boost-users] Re: program_options and ->notify(&your_function)

Vladimir Prus