The IIS_USER_ENUM_STRUCT structure contains a pointer to an IIS_USER_INFO_1_CONTAINER.

This type is declared as follows:

 typedef struct _IIS_USER_ENUM_STRUCT {
     DWORD Level;
     [switch_is(Level)] union _USER_ENUM_UNION {
         [case(1)]
             LPIIS_USER_INFO_1_CONTAINER Level1;
         [default]            ;
     } ConfigInfo;
 } IIS_USER_ENUM_STRUCT,
  *LPIIS_USER_ENUM_STRUCT;

Level: The value that indicates the level of detail in the information provided. This member MUST be set to 1.

ConfigInfo: The name of the contained union.

Level1: The pointer to an IIS_USER_INFO_1_CONTAINER structure that contains the user information collection.