4.1.2.2.3 ConnectToDCWithCreds

 procedure ConnectToDCWithCreds(
   dcname: unicodestring,
   username: unicodestring,
   pwd: unicodestring,
   domain: unicodestring): ConnectionCtx

Creates a ConnectionCtx for the DC named by dcname, associating the credentials of user username, password pwd, and user-domain domain with the ConnectionCtx. dcname can be the Internet host name or the NetBIOS name of the DC. If the ConnectionCtx cannot be created, it returns null.