Class Hierarchy
AcRxObject AcGiDrawable AcDbObject AcDbUnderlayDefinition AcDbDgnDefinition
C++
class AcDbDgnDefinition : public AcDbUnderlayDefinition;
File
dbunderlaydef.h
Description
Represents DGN underlays in the drawing. Underlays are similar to raster images but their content is snappable.