Here are the classes, structs, unions and interfaces with brief descriptions:

[detail level 123]

▼NLeechCraft
▼NAzoth
CChatMsgAppendInfo	Defines additional parameters of the message
CDefaultSortParams
CEntryStatus
CIAccount	Interface representing a single account
CIAdvancedCLEntry
CIAdvancedMessage
CIAuthable	Represents an entry that supports authorizations
CIChatStyleResourceSource	Interface for chat style resource loaders and handlers
CICLEntry	Represents a single entry in contact list
CIConfigurableMUC	This interfaces is used for MUCs that can be configured
CIEmoticonResourceSource	Interface for smile resource loaders
CIExtSelfInfoAccount	Interface for accounts with extended self information
CIHaveConsole	Interface for accounts that support protocol consoles
CIHaveDirectedStatus	Interface for entries for sending directed statuses
CIHaveEntityTime
CIHaveMicroblogs
CIHavePings
CIHaveQueriableVersion
CIHaveSearch	Interface for accounts supporting IM search
CIHaveServerHistory
CIHaveServiceDiscovery	Interface for accounts supporting service discovery
CIHistoryPlugin	Interface for plugins storing chat history
CILastActivityProvider	Interface for plugins providing last activity info
CIMediaCall
CIMessage	This interface is used to represent a message
CIMetaInfoEntry
CIMUCBookmarkEditorWidget
CIMUCConfigWidget	This interface is for widgets used to configure the room
CIMUCEntry	Represents a single MUC entry in the CL
CIMUCJoinWidget	This interface defines methods that should be implemented in widgets which are used to join MUC rooms
CIMUCPerms	This interface describes permissions in the given room
CIPendingLastActivityRequest
CIPendingPing
CIPendingVersionQuery
CIProtocol	Represents a protocol
CIProtocolPlugin
CIProvideCommands
CIProxyObject
CIRegManagedAccount
CIResourcePlugin	Interface for plugins having resource sources, like smile support or chat window styles
CIResourceSource	Base interface for specific resource sources
CIRichTextMessage	Interface for messages supporting rich text contents
CISDSession	Interface for service discovery sessions
CISearchSession	Interface for search sessions
CISupportActivity	Interface for accounts supporting user activity
CISupportBookmarks	Interface for accounts supporting bookmarks
CISupportGeolocation	Interface for accounts supporting geolocation data
CISupportImport	Interface for protocols supporting import
CISupportLastActivity
CISupportMediaCalls
CISupportMicroblogs
CISupportMood	Interface for accounts supporting user mood
CISupportNonRoster
CISupportPGP	Interface for accounts supporting PGP encryption
CISupportRIEX	Interface representing Roster Item Exchange-like things
CISupportTune	Interface for publishing user tunes
CITransferJob	This interface must be implemented by objects representing file transfer jobs
CITransferManager	This interface must be implemented by transfer managers returned from IAccount::GetTransferManager()
CIUpdatableChatEntry	Interface for entries that can modify messages bodies
CIURIHandler	This interface is for protocols that may handle URIs and corresponding actions are dependent on an exact account
CMessageBase
CPost
CPostAuthor
CRIEXItem	Represents a single exchange entry
CSrvHistMessage
CStaticCommand