2 * Copyright (C) 2009 Apple Inc. All Rights Reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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11 * documentation and/or other materials provided with the distribution.
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27 #include "platform/win/SystemInfo.h"
29 #if _WIN32_WINNT_WINBLUE
30 #include <versionhelpers.h>
37 #ifndef _WIN32_WINNT_WINBLUE
38 static bool IsWindowsVistaOrGreater()
40 OSVERSIONINFOEXW osvi = { };
41 osvi.dwOSVersionInfoSize = sizeof(osvi);
42 osvi.dwMajorVersion = HIBYTE(_WIN32_WINNT_VISTA);
43 osvi.dwMinorVersion = LOBYTE(_WIN32_WINNT_VISTA);
44 DWORDLONG conditoin = 0;
45 VER_SET_CONDITION(conditoin, VER_MAJORVERSION, VER_GREATER_EQUAL);
46 VER_SET_CONDITION(conditoin, VER_MINORVERSION, VER_GREATER_EQUAL);
47 return !!::VerifyVersionInfoW(&osvi, VER_MAJORVERSION | VER_MINORVERSION, conditoin);
51 bool isWindowsVistaOrGreater()
53 static bool initialized = false;
54 static bool cachedIsWindowsVistaOrGreater;
58 cachedIsWindowsVistaOrGreater = IsWindowsVistaOrGreater();
60 return cachedIsWindowsVistaOrGreater;