API得到Windows版本

API得到Windows版本

/**
* Windows Version
*   https://msdn.microsoft.com/en-us/library/windows/desktop/dn481241(v=vs.85).aspx 
* In Windows 8.1 and Windows 10, the GetVersion and GetVersionEx functions have been deprecated.
* In Windows 10, the VerifyVersionInfo function has also been deprecated.

* Operating system Version number (Major.Minor)
*
*     Windows 10             6.4, 7.x, 10.0
*     Windows 8.1            6.3
*     Windows 8              6.2
*     Windows 7              6.1
*     Windows Server 2008 R2 6.1
*     Windows Server 2008    6.0
*     Windows Vista          6.0
*     Windows Server 2003 R2 5.2
*     Windows Server 2003    5.2
*     Windows XP             5.1
*     Windows 2000           5.0
*     Windows NT40           4.0
*     Windows NT35           3.0
*/
typedef enum OSWindowsVersion {
OS_UNKNOWN  = 0,
OS_WINNT35  = 35,
OS_WINNT40  = 40,
OS_WIN2000  = 50,
OS_WINXP    = 51,
OS_WIN2003	= 52,
OS_WINXP64	= 52,
OS_Vista    = 60,
OS_WIN7     = 61,
OS_WIN8     = 62,
OS_WIN2012  = 62,
OS_WIN8_1   = 63,
OS_WIN10   = 100
} OSWindowsVersion;

OSWindowsVersion GetWindowsVersion();

// Author: cheungmine
// 20161205

BOOL GetNtdllVersion(DWORD *dwMajorVer, DWORD *dwMinorVer, DWORD *dwBuildNum)
{
typedef void (WINAPI *PFN_RTLGETNTVERSIONNUMBERS)(DWORD*, DWORD*, DWORD*);

HMODULE hNtdll = LoadLibrary("ntdll.dll");

if (hNtdll) {
PFN_RTLGETNTVERSIONNUMBERS pfnGetWinVer = (PFN_RTLGETNTVERSIONNUMBERS)
GetProcAddress(hNtdll, "RtlGetNtVersionNumbers");

if (pfnGetWinVer) {
pfnGetWinVer(dwMajorVer, dwMinorVer, dwBuildNum);
FreeLibrary(hNtdll);
return TRUE;
}

FreeLibrary(hNtdll);
}

return FALSE;
}

OSWindowsVersion GetWindowsVersion()
{
DWORD majorVer = 0;
DWORD minorVer = 0;
DWORD buildNum = 0;
BOOL isNtVer = 0;

OSVERSIONINFO info;
OSWindowsVersion osVer = OS_UNKNOWN;

SeZero(&info, sizeof(info));
info.dwOSVersionInfoSize = sizeof(info);

if (GetVersionEx(&info) && info.dwPlatformId == VER_PLATFORM_WIN32_NT) {
switch (info.dwMajorVersion) {
case 3:
osVer = OS_WINNT35;
break;

case 4:
osVer = OS_WINNT40;
break;

case 5:
if (info.dwMinorVersion == 0) {
osVer = OS_WIN2000;
} else if (info.dwMinorVersion == 1) {
osVer = OS_WINXP;
} else if (info.dwMinorVersion >= 2) {
osVer = OS_WIN2003;
}
break;

case 6:
if (info.dwMinorVersion == 0) {
osVer = OS_Vista;
} else if (info.dwMinorVersion == 1) {
osVer = OS_WIN7;
} else if (info.dwMinorVersion == 2) {
// 8 or 8.1 or 10
osVer = OS_WIN8;

if (GetNtdllVersion(&majorVer, &minorVer, &buildNum)) {
if (majorVer == 6) {
if (minorVer == 3) {
osVer = OS_WIN8_1;
} else if (minorVer >= 4) {
osVer = OS_WIN10;
}
} else if (majorVer >= 7) {
osVer = OS_WIN10;
}
}
} else if (info.dwMinorVersion == 3) {
osVer = OS_WIN8_1;
} else if (info.dwMinorVersion >= 4) {
osVer = OS_WIN10;
}
break;

default:
if (info.dwMajorVersion >= 7) {
osVer = OS_WIN10;
}
break;
}
} else if (GetNtdllVersion(&majorVer, &minorVer, &buildNum)) {
// should not run to this!!
switch (majorVer) {
case 3:
osVer = OS_WINNT35;
break;

case 4:
osVer = OS_WINNT40;
break;

case 5:
if (minorVer == 0) {
osVer = OS_WIN2000;
} else if (minorVer == 1) {
osVer = OS_WINXP;
} else if (minorVer >= 2) {
osVer = OS_WIN2003;
}
break;

case 6:
if (minorVer == 0) {
osVer = OS_Vista;
} else if (minorVer == 1) {
osVer = OS_WIN7;
} else if (minorVer == 2) {
osVer = OS_WIN8;
} else if (minorVer == 3) {
osVer = OS_WIN8_1;
} else if (minorVer >= 4) {
osVer = OS_WIN10;
}
break;

default:
if (majorVer >= 7) {
osVer = OS_WIN10;
}
break;
}
}

return osVer;
}