InterfaceDef Object

The properties, methods, and collections that a class implements are organized into functionally related groups. Each group is implemented as a repository interface. The properties, methods, and collections of each interface are members of the interface. An interface definition is the template to which an interface conforms.

To add a new interface to a repository, use the ClassDef object or the ReposTypeLib object.

An InterfaceDef object is also a RepositoryObject and a RepositoryObjectVersion object. In addition to the members described here, you can access members that are defined for those objects. For more information about accessing a member of an interface that is not the default interface, see Accessing Automation Object Members.

When to Use

Use the InterfaceDef class to:

Retrieve or modify properties of an interface definition.
Determine which members are attached to an interface definition.
Determine which classes implement an interface.
Determine the base interface from which an interface derives.
Determine which interfaces derive from a particular interface.
Determine which repository objects expose a particular interface.
Add a new property, method, or collection type to an interface definition.

Properties

Property	Description
Flags	Flags that specify whether the interface is extensible, and whether the interface should be visible to Automation interface queries
InterfaceID	The global interface identifier for the interface
Synonym	Stores a synonym of the interface name
TableName	The name of the SQL table that is used to store instance information for the properties of the interface

Methods

Method	Description
CreateAlias	Creates a new alias definition, and attaches it to the interface definition.
CreateMethodDef	Creates a new method definition, and attaches it to the interface definition.
CreatePropertyDef	Creates a new property definition, and attaches it to the interface definition.
CreateRelationshipColDef	Creates a relationship collection type. The collection type is attached to the interface definition.
ObjectInstances	Materializes an ObjectCol collection of all objects in the repository that expose this interface.

Collections

Collection	Description
Ancestor	The collection of one base interface from which this interface derives
Classes	The collection of classes that implement the interface
Descendants	The collection of other interfaces that derive from this interface
Members	The collection of members that are exposed by the interface
Properties	The collection of all persistent properties that are attached to the InterfaceDef object
ReposTypeLibScopes	The collection of all repository type libraries that contain this definition
Implies	The collection of InterfaceDef objects that are also implemented by this interface
ImpliedBy	The collection of InterfaceDef objects that also implement this interface
ScriptsUsedByInterface	The collection of script definition object used by this interface