Base class implementation for undo actions that require (de)serialization of data.
Utility base class for undo actions that operate on a single IGH_DocumentObject.
Base class implementation for undo actions.
Exception associated with undo events
Represents a single undo/redo record. A single record may contain any number of undo actions.
Provides access to a documents undo data.
Base interface for all undo/redo actions
State enumeration for undo records.