The USE_INFO_3 structure specifies details about the connection between a machine on which the workstation service is running and a shared resource, including user name and domain name.

 typedef struct _USE_INFO_3 {
   USE_INFO_2 ui3_ui2;
   ULONG ui3_flags;
 } USE_INFO_3,
  *PUSE_INFO_3,
  *LPUSE_INFO_3;

ui3_ui2: A pointer to the USE_INFO_2 structure (section 2.2.5.24) that the method returns.

ui3_flags: A reserved field that the client MUST set to zero, and the server MUST ignore on receipt.