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

[detail level 123]

Ngpiod
Nline	Namespace containing various type definitions for GPIO lines
Coffset	Wrapper around unsigned int for representing line offsets
Cchip_info	Represents an immutable snapshot of GPIO chip information
Cchip	Represents a GPIO chip
Cedge_event_buffer	Object into which edge events are read for better performance
Cedge_event	Immutable object containing data about a single edge event
Cchip_closed	Exception thrown when an already closed chip is used
Crequest_released	Exception thrown when an already released line request is used
Cbad_mapping	Exception thrown when the core C library returns an invalid value for any of the line_info properties
Cinfo_event	Immutable object containing data about a single line info event
Cline_config	Contains a set of line config options used in line requests and reconfiguration
Cline_info	Contains an immutable snapshot of the line's state at the time when the object of this class was instantiated
Cline_request	Stores the context of a set of requested GPIO lines
Cline_settings	Stores GPIO line settings
Crequest_builder	Intermediate object storing the configuration for a line request
Crequest_config	Stores a set of options passed to the kernel when making a line request
Ctimestamp	Stores the edge and info event timestamps as returned by the kernel and allows to convert them to std::chrono::time_point
Cgpiod_chip
Cgpiod_chip_info
Cgpiod_edge_event
Cgpiod_edge_event_buffer
Cgpiod_info_event
Cgpiod_line_config
Cgpiod_line_info
Cgpiod_line_request
Cgpiod_line_settings
Cgpiod_request_config