NetWkstaGetInfo函数到底以那个为准？...难道是microsoft的错？

[chilicsdn]

我想获取某台机器属于哪个工作组用NetWkstaGetInfo函数
MSDN上NetWkstaGetInfo函数原形为
NET_API_STATUS NetWkstaGetInfo(
LPWSTR servername,
DWORD level,
LPBYTE *bufptr
);
servername：要传unicode string
msdn上描述：Pointer to a Unicode string containing the name of the remote server on which the function is to execute. A NULL pointer or string specifies the local computer

但是在vc的lmwksta.h中却为
NET_API_STATUS NET_API_FUNCTION
NetWkstaGetInfo (
IN LPTSTR servername OPTIONAL,
IN DWORD level,
OUT LPBYTE *bufptr
);
servername传字符串即可
这是microsoft的错吗？