下面是我从MSDN上找到的一段代码....可是编译通不过...提示说VER_SET_CONDITION，VER_MAJORVERSION等常量未定义．．．．大家帮我看下吧．．　

　　ＤＷＯＲＤＬＯＮＧ　类形不知道在那个头文件中．．．还有就是．．．上而那些常量．．．
The following example determines whether the application is running on Windows 2000 Service Pack 1 or later.
#include <windows.h>
BOOL Is_Win2000_SP1_or_Later ()
{
   OSVERSIONINFOEX osvi;
   DWORDLONG dwlConditionMask = 0;

   // Initialize the OSVERSIONINFOEX structure.

   ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
   osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
   osvi.dwMajorVersion = 5;
   osvi.dwMinorVersion = 0;
   osvi.wServicePackMajor = 1;

   // Initialize the condition mask.

   VER_SET_CONDITION( dwlConditionMask, VER_MAJORVERSION,
      VER_GREATER_EQUAL );
   VER_SET_CONDITION( dwlConditionMask, VER_MINORVERSION,
      VER_GREATER_EQUAL );
   VER_SET_CONDITION( dwlConditionMask, VER_SERVICEPACKMAJOR,
      VER_GREATER_EQUAL );

   // Perform the test.

   return VerifyVersionInfo(
      &osvi,
      VER_MAJORVERSION | VER_MINORVERSION | VER_SERVICEPACKMAJOR,
      dwlConditionMask);
}

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