IInterfaceDef Interface

The properties, methods, and collections that a class implements are organized into functionally related groups. Each group is implemented as a COM 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 the Repository, use the IClassDef interface or the IReposTypeLib interface.

When to Use

Use the IInterfaceDef interface 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 what interfaces derive from a particular interface.
Determine what 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.
TableName	The name of the SQL table that is used to store instance information for the properties of the interface.

Methods

IUnknown Method	Description
QueryInterface	Returns pointers to supported interfaces.
AddRef	Increments the reference count.
Release	Decrements the reference count.

IDispatch Method	Description
GetIDsOfNames	Maps a single member and a set of argument names to a corresponding set of dispatch identifiers.
GetTypeInfo	Retrieves a type information object, which can be used to get the type information for an interface.
GetTypeInfoCount	Retrieves the number of type information interfaces that an object provides (either 0 or 1).
Invoke	Provides access to properties and methods exposed by an Automation object.

IRepositoryDispatch Method	Description
get_Properties	Retrieves the IReposProperties interface pointer. The IReposProperties interface provides access to the Properties collection.

IInterfaceDef Method	Description
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 IObjectCol interface pointer for the 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 attached to the interface definition.