User Interfaces

IBusAttribute — Attributes of IBusText.
IBusHotkeyProfile — Hotkeys and associated events.
IBusLookupTable — Candidate word/phrase lookup table.
IBusProperty — UI component for input method engine property.
IBusText — Text with decorating information.

These APIs directly related to User interfaces, such as pre-edit buffer, auxiliary text, language bar, button, radio boxes, and so on.