IDispatch Interface [Automation]

The IDispatch interface exposes objects, methods and properties to programming tools and other applications that support Automation. COM components implement the IDispatch interface to enable access by Automation clients, such as Visual Basic.

For an example on how to access a COM object through the IDispatch interface, see Implementing the IDispatch Interface [Automation].

IUnknown Methods



Returns pointers to supported interfaces.


Increments reference count.


Decrements reference count.

IDispatch Methods


IDispatch::GetTypeInfoCount Method

Retrieves the number of type information interfaces that an object provides (either 0 or 1).

IDispatch::GetTypeInfo Method

Gets the type information for an object.

IDispatch::GetIDsOfNames Method

Maps a single member and an optional set of argument names to a corresponding set of integer DISPIDs.

IDispatch::Invoke Method

Provides access to properties and methods exposed by an object.

IDispatch is located in the Oleauto.h header file on 32-bit systems, and in Dispatch.h on 16-bit and Macintosh systems.