Here is a list of all documented struct and union fields with links to the struct/union documentation for each field:

on_application_acknowledgment : DDS_DataWriterListener
on_data_available : DDS_DataReaderListener
on_data_on_readers : DDS_SubscriberListener
on_inconsistent_topic : DDS_TopicListener
on_instance_replaced : DDS_DataWriterListener
on_liveliness_changed : DDS_DataReaderListener
on_liveliness_lost : DDS_DataWriterListener
on_offered_deadline_missed : DDS_DataWriterListener
on_offered_incompatible_qos : DDS_DataWriterListener
on_publication_matched : DDS_DataWriterListener
on_reliable_reader_activity_changed : DDS_DataWriterListener
on_reliable_writer_cache_changed : DDS_DataWriterListener
on_request_available : RTI_Connext_ReplierListener , RTI_Connext_SimpleReplierListener
on_requested_deadline_missed : DDS_DataReaderListener
on_requested_incompatible_qos : DDS_DataReaderListener
on_sample_lost : DDS_DataReaderListener
on_sample_rejected : DDS_DataReaderListener
on_subscription_matched : DDS_DataReaderListener
ordered_access : DDS_PresentationQosPolicy
ordinal : DDS_EnumMember
original_publication_virtual_guid : DDS_SampleInfo
original_publication_virtual_sequence_number : DDS_SampleInfo
output_file : DDS_LoggingQosPolicy
outstanding_asynchronous_sample_allocation : DDS_DomainParticipantResourceLimitsQosPolicy
ownership : DDS_DataReaderQos , DDS_SubscriptionBuiltinTopicData , DDS_TopicBuiltinTopicData , DDS_PublicationBuiltinTopicData , DDS_DataWriterQos , DDS_TopicQos
ownership_strength : DDS_PublicationBuiltinTopicData , DDS_DataWriterQos