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Get the version of windows

Posted on 2000-04-20
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Last Modified: 2010-04-10
How can I get the version of Windows (95/98 or NT/2000) that is running? Code?
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Question by:javigil1
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MDarling earned 50 total points
ID: 2733726
use GetVersionEx(...)

#include <windows.h>
#include <stdio.h>

BOOL DisplaySystemVersion()
{
   OSVERSIONINFOEX osvi;
   BOOL bOsVersionInfoEx;

   // Try calling GetVersionEx using the OSVERSIONINFOEX structure,
   // which is supported on Windows 2000.
   //
   // If that fails, try using the OSVERSIONINFO structure.

   ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
   osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);

   if( !(bOsVersionInfoEx = GetVersionEx ((OSVERSIONINFO *) &osvi)) )
   {
      // If OSVERSIONINFOEX doesn't work, try OSVERSIONINFO.

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

   switch (osvi.dwPlatformId)
   {
      case VER_PLATFORM_WIN32_NT:

      // Test for the product.

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

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

      // Test for workstation versus server.

         if( bOsVersionInfoEx )
         {
            if ( osvi.wProductType == VER_NT_WORKSTATION )
               printf ( "Professional " );

            if ( osvi.wProductType == VER_NT_SERVER )
               printf ( "Server " );
         }
         else
         {
            HKEY hKey;
            char szProductType[80];
            DWORD dwBufLen;

            RegOpenKeyEx( HKEY_LOCAL_MACHINE,
               "SYSTEM\\CurrentControlSet\\Control\\ProductOptions",
               0, KEY_QUERY_VALUE, &hKey );
            RegQueryValueEx( hKey, "ProductType", NULL, NULL,
               (LPBYTE) szProductType, &dwBufLen);
            RegCloseKey( hKey );
            if ( lstrcmpi( "WINNT", szProductType) == 0 )
               printf( "Workstation " );
            if ( lstrcmpi( "SERVERNT", szProductType) == 0 )
               printf( "Server " );
         }

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

         printf ("version %d.%d %s (Build %d)\n",
            osvi.dwMajorVersion,
            osvi.dwMinorVersion,
            osvi.szCSDVersion,
            osvi.dwBuildNumber & 0xFFFF);

         break;

      case VER_PLATFORM_WIN32_WINDOWS:

         if ((osvi.dwMajorVersion > 4) ||
            ((osvi.dwMajorVersion == 4) && (osvi.dwMinorVersion > 0)))
         {
             printf ("Microsoft Windows 98 ");
         }
         else printf ("Microsoft Windows 95 ");

         break;

      case VER_PLATFORM_WIN32s:

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


regards,
Mike.
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