ＭＳＤＮ的一个例子有获取到各种操作系统

ＭＳＤＮ的一个例子有获取到64位系统
#include <windows.h>
#include <tchar.h>
#include <stdio.h>

#define BUFSIZE 80

typedef void (WINAPI *PGNSI)(LPSYSTEM_INFO);

int __cdecl _tmain()
{
OSVERSIONINFOEX osvi;
SYSTEM_INFO si;
PGNSI pGNSI;
BOOL bOsVersionInfoEx;

ZeroMemory(&si, sizeof(SYSTEM_INFO));
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));

// Try calling GetVersionEx using the OSVERSIONINFOEX structure.
// If that fails, try using the OSVERSIONINFO structure.

osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);

if( !(bOsVersionInfoEx = GetVersionEx ((OSVERSIONINFO *) &osvi)) )
{
osvi.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
if (! GetVersionEx ( (OSVERSIONINFO *) &osvi) )
return FALSE;
}

// Call GetNativeSystemInfo if supported
// or GetSystemInfo otherwise.

pGNSI = (PGNSI) GetProcAddress(
GetModuleHandle(TEXT( "kernel32.dll ")),
"GetNativeSystemInfo ");
if(NULL != pGNSI)
pGNSI(&si);
else GetSystemInfo(&si);

switch (osvi.dwPlatformId)
{
// Test for the Windows NT product family.

case VER_PLATFORM_WIN32_NT:

// Test for the specific product.

if ( osvi.dwMajorVersion == 6 && osvi.dwMinorVersion == 0 )
{
if( osvi.wProductType == VER_NT_WORKSTATION )
printf ( "Windows Vista ");
else printf ( "Windows Server / "Longhorn/ " " );
}

if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 2 )
{
if( GetSystemMetrics(SM_SERVERR2) )
printf( "Microsoft Windows Server 2003 / "R2/ " ");
else if( osvi.wProductType == VER_NT_WORKSTATION &&
si.wProcessorArchitecture==PROCESSOR_ARCHITECTURE_AMD64)
{
printf( "Microsoft Windows XP Professional x64 Edition ");
}
else printf ( "Microsoft Windows Server 2003, ");
}

if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1 )
printf ( "Microsoft Windows XP ");

if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 0 )
printf ( "Microsoft Windows 2000 ");

if ( osvi.dwMajorVersion <= 4 )
printf ( "Microsoft Windows NT ");

// Test for specific product on Windows NT 4.0 SP6 and later.
if( bOsVersionInfoEx )
{
// Test for the workstation type.
if ( osvi.wProductType == VER_NT_WORKSTATION &&
si.wProcessorArchitecture!=PROCESSOR_ARCHITECTURE_AMD64)
{
if( osvi.dwMajorVersion == 4 )
printf ( "Workstation 4.0 " );
else if( osvi.wSuiteMask & VER_SUITE_PERSONAL )
printf ( "Home Edition " );
else printf ( "Professional " );
}

// Test for the server type.
else if ( osvi.wProductType == VER_NT_SERVER ||
osvi.wProductType == VER_NT_DOMAIN_CONTROLLER )
{
if(osvi.dwMajorVersion==5 && osvi.dwMinorVersion==2)
{
if ( si.wProcessorArchitecture ==
PROCESSOR_ARCHITECTURE_IA64 )
{
if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
printf ( "Datacenter Edition "
"for Itanium-based Systems " );
else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
printf ( "Enterprise Edition "
"for Itanium-based Systems " );
}

else if ( si.wProcessorArchitecture ==
PROCESSOR_ARCHITECTURE_AMD64 )
{
if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
printf ( "Datacenter x64 Edition " );
else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
printf ( "Enterprise x64 Edition " );
else printf( "Standard x64 Edition " );
}

else
{
if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
printf ( "Datacenter Edition " );
else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
printf ( "Enterprise Edition " );
else if ( osvi.wSuiteMask & VER_SUITE_BLADE )
printf ( "Web Edition " );
else printf ( "Standard Edition " );
}
}
else if(osvi.dwMajorVersion==5 && osvi.dwMinorVersion==0)
{
if( osvi.wSuiteMask & VER_SUITE_DATACENTER )
printf ( "Datacenter Server " );
else if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
printf ( "Advanced Server " );
else printf ( "Server " );
}
else // Windows NT 4.0
{
if( osvi.wSuiteMask & VER_SUITE_ENTERPRISE )
printf ( "Server 4.0, Enterprise Edition " );
else printf ( "Server 4.0 " );
}
}
}

// Test for specific product on Windows NT 4.0 SP5 and earlier
else
{
HKEY hKey;
TCHAR szProductType[BUFSIZE];
DWORD dwBufLen=BUFSIZE*sizeof(TCHAR);
LONG lRet;

lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
TEXT( "SYSTEM//CurrentControlSet//Control// "
"ProductOptions "), 0, KEY_QUERY_VALUE, &hKey );
if( lRet != ERROR_SUCCESS )
return FALSE;

lRet = RegQueryValueEx( hKey, TEXT( "ProductType "),
NULL, NULL, (LPBYTE) szProductType, &dwBufLen);
RegCloseKey( hKey );

if( (lRet != ERROR_SUCCESS) ||
(dwBufLen > BUFSIZE*sizeof(TCHAR)) )
return FALSE;

if ( lstrcmpi( TEXT( "WINNT "), szProductType) == 0 )
printf( "Workstation " );
if ( lstrcmpi( TEXT( "LANMANNT "), szProductType) == 0 )
printf( "Server " );
if ( lstrcmpi( TEXT( "SERVERNT "), szProductType) == 0 )
printf( "Advanced Server " );
printf( "%d.%d ", osvi.dwMajorVersion, osvi.dwMinorVersion );
}

// Display service pack (if any) and build number.

if( osvi.dwMajorVersion == 4 &&
lstrcmpi( osvi.szCSDVersion, TEXT( "Service Pack 6 ") ) == 0 )
{
HKEY hKey;
LONG lRet;

// Test for SP6 versus SP6a.
lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
TEXT( "SOFTWARE//Microsoft//Windows NT//CurrentVersion// "
"Hotfix//Q246009 "), 0, KEY_QUERY_VALUE, &hKey );
if( lRet == ERROR_SUCCESS )
printf( "Service Pack 6a (Build %d)/n ",
osvi.dwBuildNumber & 0xFFFF );
else // Windows NT 4.0 prior to SP6a
{
_tprintf( TEXT( "%s (Build %d)/n "),
osvi.szCSDVersion,
osvi.dwBuildNumber & 0xFFFF);
}

RegCloseKey( hKey );
}
else // not Windows NT 4.0
{
_tprintf( TEXT( "%s (Build %d)/n "),
osvi.szCSDVersion,
osvi.dwBuildNumber & 0xFFFF);
}

break;

// Test for the Windows Me/98/95.
case VER_PLATFORM_WIN32_WINDOWS:

if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 0)
{
printf ( "Microsoft Windows 95 ");
if (osvi.szCSDVersion[1]== 'C ' || osvi.szCSDVersion[1]== 'B ')
printf( "OSR2 " );
}

if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 10)
{
printf ( "Microsoft Windows 98 ");
if ( osvi.szCSDVersion[1]== 'A ' || osvi.szCSDVersion[1]== 'B ')
printf( "SE " );
}

if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 90)
{
printf ( "Microsoft Windows Millennium Edition/n ");
}
break;

case VER_PLATFORM_WIN32s:

printf ( "Microsoft Win32s/n ");
break;
}
return TRUE;
}