/**************************************************************************
 *
 * Copyright 2014 VMware, Inc.
 * All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 **************************************************************************/


#pragma once


#ifdef _WIN32


#include <windows.h>


/**
 * VersionHelpers.h is not yet widely available (only available on certain MSVC
 * and Windows SDK versions), so just define our own helpers.
 *
 * See http://msdn.microsoft.com/en-gb/library/windows/desktop/ms725491.aspx
 */
static inline bool
IsWindows8OrGreater()
{
   OSVERSIONINFOEXW osvi;
   ZeroMemory(&osvi, sizeof osvi);
   osvi.dwOSVersionInfoSize = sizeof osvi;
   osvi.dwMajorVersion = 6;
   osvi.dwMinorVersion = 2;
   osvi.wServicePackMajor = 0;
   DWORDLONG dwlConditionMask = 0;
   VER_SET_CONDITION(dwlConditionMask, VER_MAJORVERSION, VER_GREATER_EQUAL);
   VER_SET_CONDITION(dwlConditionMask, VER_MINORVERSION, VER_GREATER_EQUAL);
   VER_SET_CONDITION(dwlConditionMask, VER_SERVICEPACKMAJOR, VER_GREATER_EQUAL);
   return VerifyVersionInfoW(&osvi,
                             VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR,
                             dwlConditionMask);
}


#endif /* _WIN32 */
