The dispatch interfaces provide a way to expose and access objects within an
application. OLE Automation defines the following dispatch interfaces and
functions:
IDispatch interface Exposes objects, methods, and properties to OLE Automation programming tools
and other applications.
Dispatch functions Simplify the implementation of an IDispatch interface. You can use these functions to automatically generate an IDispatch interface.
IEnumVARIANT interface Provides a way for OLE Automation controllers to iterate over collection
objects.
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