Part Classes


The following PART classes are related to entities:

Part

PART
Provides methods and data for grouping entities together as parts. All api_part_* functions should be thought of as requiring the use of the PART class.
PART_CONTEXT
Combines a part with various view information such as rendering context, highlighting, color, and redisplay control data. All api_pm_* functions should be thought of as requiring the use of the PART_CONTEXT class.

Entity

entity_callback
Provides notification of changes to entities.
entity_callback_list
Provides a type-safe interface to the toolkit_callback_list class and the execute command.

History and Roll

ATTRIB_HISTORY
Creates an attribute which contains the history of an entity.
HISTORY_MANAGER
Creates a history state on the specified history stream.
HISTORY_STREAM
Implements method for saving past states.
roll_callback
Notifies the user about the start and the end of a roll operation.
roll_callback_list
Provides a type-safe interface to the toolkit_callback_list and the execute method.

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