internal extern static bool LogonUserA( string lpszUsername, string lpszDomain, string lpszPassword, LOGON_TYPE dwLogonType, LOGON_PROVIDER dwLogonProvider, out IntPtr phToken);
public static extern bool LogonUserA( string lpszUsername, string lpszDomain, string lpszPassword, LOGON_TYPE dwLogonType, LOGON_PROVIDER dwLogonProvider, ref IntPtr phToken);