Class Hierarchy
IOPMPropertyExpanderExpression
C++
class IOPMPropertyExpanderExpression : public IUnknown;
File
opmext.h
Description
This interface complements IOPMPropertyExpander in a way that it allows property providers (AutoCAD AcDbObject-based COM objects) to support expression meta-properties on each property broken out from IOPMPropertyExpander (for details on how properties can be broken down into groups, please refer to documentation of IOPMPropertyExpander interface). If a property provider COM object were to support expression meta-property, it needs to implement IOPMPropertyExpanderExpression, allowing OPM framework to query and set expressions through its interface methods.