AcDbMatchProperties

dbmatch.h

The AcDbMatchProperties class is an abstract base class for a series of protocol extension classes that add the ability to copy properties between entities. 

Derived classes for all the built-in entity types are provided as a part of the match.arx application. For custom classes that are not a part of AutoCAD, the custom class's application may derive its own class from the AcDbMatchProperties base class (and hook an object of the class into the run-time tree in the normal manner for protocol extension) in order to tie into the existing match properties interface that comes with AutoCAD (in match.arx).

AcDbEntity