如何判断当前的操作系统是2000，还是XP

Question

如何判断当前的操作系统是2000，还是XP

Answer 1

OSVERSIONINFO vi = {sizeof(vi)};
GetVersionEx(&vi);
if((vi.dwPlatformId!=VER_PLATFORM_WIN32_NT)&&(vi.dwMajorVersion<5))
{
}
VER_PLATFORM_WIN32_NT表示示NT系统列否则是9x.
vi.dwMajorVersion=5,vi.dwMinorVersion=0:2000
vi.dwMajorVersion=5,vi.dwMinorVersion=1:XP

Answer 2

SDK上的例子：
////////////////////////////Getting the System Version
The following example uses the GetVersionEx function to display the version of the currently running operating system.
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 <stdio.h>#define BUFSIZE 80int main()
{
   OSVERSIONINFOEX osvi;
   BOOL bOsVersionInfoEx;   // Try calling GetVersionEx using the OSVERSIONINFOEX structure.
   // If that fails, try using the OSVERSIONINFO structure.   ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
   osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);   if( !(bOsVersionInfoEx = GetVersionEx ((OSVERSIONINFO *) &osvi)) )
   {
      osvi.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
      if (! GetVersionEx ( (OSVERSIONINFO *) &osvi) ) 
         return FALSE;
   }   switch (osvi.dwPlatformId)
   {
      // Test for the Windows NT product family.
      case VER_PLATFORM_WIN32_NT:         // Test for the specific product.
         if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 2 )
            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 )
            {
               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( 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 " );
               }
            }
         }
         else  // Test for specific product on Windows NT 4.0 SP5 and earlier
         {
            HKEY hKey;
            char szProductType[BUFSIZE];
            DWORD dwBufLen=BUFSIZE;
            LONG lRet;            lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE,
               "SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
               0, KEY_QUERY_VALUE, &hKey );
            if( lRet != ERROR_SUCCESS )
               return FALSE;            lRet = RegQueryValueEx( hKey, "ProductType", NULL, NULL,
               (LPBYTE) szProductType, &dwBufLen);
            if( (lRet != ERROR_SUCCESS) || (dwBufLen > BUFSIZE) )
               return FALSE;            RegCloseKey( hKey );            if ( lstrcmpi( "WINNT", szProductType) == 0 )
               printf( "Workstation " );
            if ( lstrcmpi( "LANMANNT", szProductType) == 0 )
               printf( "Server " );
            if ( lstrcmpi( "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, "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 // not Windows NT 4.0 
         {
            printf( "%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' )
                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; 
}

Answer 3

这个不难啊，MSDN上查GetVersionEx

Answer 4

支持 bohut(伯虎) , 你可以结贴了。