text: //
  // detail/win_event.ipp
  // ~~~~~~~~~~~~~~~~~~~~
  //
  // Copyright (c) 2003-2016 Christopher M. Kohlhoff (chris at kohlhoff dot com)
  //
  // Distributed under the Boost Software License, Version 1.0. (See accompanying
  // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  //
  
  #ifndef ASIO_DETAIL_IMPL_WIN_EVENT_IPP
  #define ASIO_DETAIL_IMPL_WIN_EVENT_IPP
  
  #if defined(_MSC_VER) && (_MSC_VER >= 1200)
  # pragma once
  #endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
  
  #include "asio/detail/config.hpp"
  
  #if defined(ASIO_WINDOWS)
  
  #include "asio/detail/throw_error.hpp"
  #include "asio/detail/win_event.hpp"
  #include "asio/error.hpp"
  
  #include "asio/detail/push_options.hpp"
  
  namespace asio {
  namespace detail {
  
  win_event::win_event()
    : state_(0)
  {
  #if defined(ASIO_WINDOWS_APP)
    events_[0] = ::CreateEventExW(0, 0, CREATE_EVENT_MANUAL_RESET, 0);
  #else // defined(ASIO_WINDOWS_APP)
    events_[0] = ::CreateEventW(0, true, false, 0);
  #endif // defined(ASIO_WINDOWS_APP)
    if (!events_[0])
    {
      DWORD last_error = ::GetLastError();
      asio::error_code ec(last_error,
          asio::error::get_system_category());
      asio::detail::throw_error(ec, "event");
    }
  
  #if defined(ASIO_WINDOWS_APP)
    events_[1] = ::CreateEventExW(0, 0, 0, 0);
  #else // defined(ASIO_WINDOWS_APP)
    events_[1] = ::CreateEventW(0, false, false, 0);
  #endif // defined(ASIO_WINDOWS_APP)
    if (!events_[1])
    {
      DWORD last_error = ::GetLastError();
      ::CloseHandle(events_[0]);
      asio::error_code ec(last_error,
          asio::error::get_system_category());
      asio::detail::throw_error(ec, "event");
    }
  }
  
  win_event::~win_event()
  {
    ::CloseHandle(events_[0]);
    ::CloseHandle(events_[1]);
  }
  
  } // namespace detail
  } // namespace asio
  
  #include "asio/detail/pop_options.hpp"
  
  #endif // defined(ASIO_WINDOWS)
  
  #endif // ASIO_DETAIL_IMPL_WIN_EVENT_IPP
  