AcRxObject AcGiDrawable AcHeapOperators AcDbObject AcDbIndex AcDbLayerIndex
class AcDbLayerIndex : public AcDbIndex;
dblyindx.h
This class is an index implementation especially for layers.
When using AutoCAD indexes, the INDEXCTL system variable must be set to the appropriate value. For example, INDEXCTL must be either 1 or 3 for the AutoCAD layer index. See the System Variables section of the AutoCAD Command Reference for information on INDEXCTL.
AcDbIndex