如何获得系统版本

OSVERSIONINFO os = {0,};
     os.dwOSVersionInfoSize = sizeof(os);
     if(!GetVersionEx(&os)) throw Exception("Fatal Error: Get System Information!");
     FIsXP = (os.dwMajorVersion==5&&os.dwMinorVersion==1&&os.dwPlatformId==VER_PLATFORM_WIN32_NT);
     Memo1->Lines->Add(String().sprintf("Operating System: Microsoft Windows %u.%u.%u %s",

              os.dwMajorVersion, os.dwMinorVersion, os.dwBuildNumber, os.szCSDVersion));

Getting the System Version
The following example uses the GetVersionEx, GetSystemMetrics, and GetNativeSystemInfo functions to determine the version information of the currently running operating system. The code outputs the information to the console.

Relying on version information is not the best way to test for a feature. Instead, refer to the documentation for the feature of interest. For more information on common techniques for feature detection, see Operating System Version.

If you must require a particular operating system, be sure to use it as a minimum supported version, rather than design the test for the one operating system. This way, your detection code will continue to work on future versions of Windows.

#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; 
}