Current OS

function TUtility.GetOSInfo: String;
var
   Platform: String;
   BuildNumber: Integer;
begin
   case Win32Platform of
     VER_PLATFORM_WIN32_WINDOWS:
       begin
         Platform := 'Windows 95';
         BuildNumber := Win32BuildNumber and $0000FFFF;
       end;
     VER_PLATFORM_WIN32_NT:
       begin
         Platform := 'Windows NT';
         BuildNumber := Win32BuildNumber;
       end;
       else
       begin
         Platform := 'Windows';
         BuildNumber := 0;
       end;
   end;
   if (Win32Platform = VER_PLATFORM_WIN32_WINDOWS) or
     (Win32Platform = VER_PLATFORM_WIN32_NT) then
   begin
     if Win32CSDVersion = '' then
       Result := Format('%s %d.%d (Build %d)', [Platform, Win32MajorVersion,
         Win32MinorVersion, BuildNumber])
     else
       Result := Format('%s %d.%d (Build %d: %s)', [Platform, Win32MajorVersion,
         Win32MinorVersion, BuildNumber, Win32CSDVersion]);
   end
   else
     Result := Format('%s %d.%d', [Platform, Win32MajorVersion,
       Win32MinorVersion])
end;