/*

   This Source Code Form is subject to the terms of the Mozilla Public

   License, v. 2.0. If a copy of the MPL was not distributed with this

   file, You can obtain one at http://mozilla.org/MPL/2.0/.

   Copyright (C) 2012 Michael Möller <mmoeller@openhardwaremonitor.org>

 */

 using System;

 using System.Diagnostics;

 using System.Runtime.InteropServices;

 namespace OpenHardwareMonitor.Hardware {

   internal static class OperatingSystem {

     public static bool Is64BitOperatingSystem() {

       if (IntPtr.Size == 8)

         return true;

       try {

         bool wow64Process;

         bool result = IsWow64Process(

           Process.GetCurrentProcess().Handle, out wow64Process);

         return result && wow64Process;

       } catch (EntryPointNotFoundException) {

         return false;

       }

     }

     [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]

     [return: MarshalAs(UnmanagedType.Bool)]

     private static extern bool IsWow64Process(IntPtr hProcess,

       out bool wow64Process);

   }

 }