Ctrl+C handling

Handle SIGINT via ACE
extern "C" void handler (int)
{ACE_DEBUG ((LM_DEBUG, "%s\n", __FUNCTION__));
// shutdown application
}

ACE_Sig_Action sa ((ACE_SignalHandler) handler, SIGINT);

Handle SIGINT via boost.asio

void handler(

    const boost::system::error_code& error,

    int signal_number)

{

  if (!error)

  {

    // A signal occurred.

  }

}

boost::asio::signal_set signals(io_service, SIGINT, SIGTERM);

signals.async_wait(handler);

QT uses QSocketNotifier and sigaction together, see Calling Qt Functions From Unix Signal Handlers

Windows Console application, see CTRL_C_EVENT and SetConsoleCtrlHandler.