如何获得Windows 操作系统的版本[3]

            if ( lstrcmpi( "WINNT", szProductType) == 0 )
               strcat(szname, "Workstation " );
            if ( lstrcmpi( "LANMANNT", szProductType) == 0 )
               strcat(szname, "Server " );
            if ( lstrcmpi( "SERVERNT", szProductType) == 0 )
               strcat(szname,"Advanced Server " );

            printf( "%d.%d ", osvi.dwMajorVersion, osvi.dwMinorVersion );
         }

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

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

            // Test for SP6 versus SP6a.
            lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
               "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
            {
               printf( "%s (Build %d)\n",
                  osvi.szCSDVersion,
                  osvi.dwBuildNumber & 0xFFFF);
            }

            RegCloseKey( hKey );
         }
         else // Windows NT 3.51 and earlier or Windows 2000 and later
         {
            printf( "%s (Build %d)\n",
               osvi.szCSDVersion,
               osvi.dwBuildNumber & 0xFFFF);
         }

         break;

      // Test for the Windows 95 product family.
      case VER_PLATFORM_WIN32_WINDOWS:

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