获得当前登录系统的用户名

BOOL GetLogUser(TCHAR* strName)

{

 BOOL bRet = FALSE;

 RtlZeroMemory(strName,sizeof(strName)/sizeof(TCHAR));

 //for xp or above

 LPTSTR szLogName = NULL;

 DWORD dwSize = 0;

 if (WTSQuerySessionInformation(WTS_CURRENT_SERVER_HANDLE,

  WTS_CURRENT_SESSION,

  WTSUserName,

  &szLogName,

  &dwSize))

 {   

  lstrcpy(strName,szLogName);

  WTSFreeMemory(szLogName);

  bRet = TRUE;

 }

 return bRet;

}