There
are a number of ways to refer to AutoCAD drawing objects with AutoLISP.
These include the following:
- VLA-objects,
returned by ActiveX functions
- Entity
names (enames), returned by entget and entsel, identifying objects
in an open drawing
- Handles,
returned by handent, which entities
retain across AutoCAD sessions
- Object IDs, used by ARX to identify objects
AutoLISP provides functions to convert from
one type of object identifier to another.
