This inheritance list is sorted roughly, but not completely, alphabetically:

[detail level 12]

C_compat_tzids
C_icalarray
C_icaltimezone
C_icaltimezonechange
C_icalvcal_defaults
Cbuffer_ring
Cconversion_table_struct
Cicalvalue_impl::data
Cencoding_map
Cexpand_split_map_struct
Cfreq_map
Cicalattach_impl
CLibICal::ICalBDBSet
Cicalbdbset_id
Cicalbdbset_impl
Cicalbdbset_options
Cicalcalendar_impl
Cicalclassify_map
Cicalclassify_parts
Cicalcluster_impl
Cicalcompiter
Cicalcomponent_impl
Cicalcomponent_kind_map
Cicaldatetimeperiodtype
Cicaldirset_impl
Cicaldirset_options
Cicaldurationtype	A struct representing a duration
Cicalerror_state
Cicalerror_string_map
Cicalfileset_id
Cicalfileset_impl
Cicalfileset_options	Options for opening an icalfileset
Cicalgauge_impl
Cicalgauge_where
Cicalgeotype
CLibICal::ICalParameter
Cicalparameter_impl
Cicalparser_impl
Cicalperiodtype	Struct to represent a period in time
CLibICal::ICalProperty
Cicalproperty_impl
Cicalrecur_iterator_impl
Cicalrecur_parser
Cicalrecurrencetype
Cicalreqstattype
Cicalset_impl
Cicalsetiter
CLibICal::ICalSpanList
Cicalspanlist_impl
Cicaltime_span
Cicaltimetype
Cicaltimezonephase
Cicaltimezonetype
Cicaltriggertype
CLibICal::ICalValue
Cicalvalue_impl
CICPointerHolder< T >
Cleap
CLexBuf
Cmajor_content_type_map
Cmime_impl
Cminor_content_type_map
Cobservance
COFile
CPreDefProp
Cpvl_elem_t
Cpvl_list_t
Crdate
Crecur_map
Cskip_map
Cslg_data
Csspm_action_map
Csspm_buffer
Csspm_header
Csspm_part
CStrItem
Ctext_part
Cttinfo
Ctzinfo
Cut_instant
CValueItem
CLibICal::VComponent	A class wrapping the libical icalcomponent functions
CLibICal::VAgenda
CLibICal::VAlarm
CLibICal::VCalendar
CLibICal::VEvent
CLibICal::VFreeBusy
CLibICal::VJournal
CLibICal::VQuery
CLibICal::VTimezone
CLibICal::VToDo
CLibICal::XDaylight
CLibICal::XStandard
CVObject
CVObjectIterator
Cwd_map
Cyy_buffer_state
Cyy_trans_info
Cyyalloc
CYYSTYPE
Czone_context