CMediaEvent Class (Compact 2013)

3/26/2014

CUnknown Class

     IDispatch

**** IMediaEvent Interface

     IMediaEventEx Interface

**          CMediaEvent Class**

This class provides base class implementation of the IDispatch methods of the dual-interface IMediaEvent. It leaves as pure virtual the properties and methods of the IMediaEvent interface.

The CMediaEvent class also provides base class implementation of the IMediaEventEx interface which derives from IMediaEvent.

The CMediaEvent::GetIDsOfNames, CMediaEvent::GetTypeInfo, CMediaEvent::GetTypeInfoCount, and CMediaEvent::Invoke member functions are standard implementations of the IDispatch interface using the CBaseDispatch class (and a type library) to parse the commands and pass them to the pure virtual methods of the IMediaEvent interface.

Member Functions

Member function	Description
CMediaEvent	Constructs a CMediaEvent object.

Implemented INonDelegatingUnknown Methods

Method	Description
NonDelegatingQueryInterface	Returns a specified reference-counted interface.

Implemented IDispatch Methods

Method	Description
GetIDsOfNames	Maps a single member and an optional set of parameters to a corresponding set of integer dispatch identifiers, which can be used during subsequent calls to the IDispatch::Invoke method.
GetTypeInfo	Retrieves a type-information object, which retrieves the type information for an interface.
GetTypeInfoCount	Retrieves the number of type-information interfaces provided by an object.
Invoke	Provides access to properties and methods exposed by an object.

Requirements

Header	dshow.h, Streams.h
Library	ole32.lib, Ole32auth.lib, Strmbase.lib, Strmiids.lib, uuid.lib

See Also

Reference

DirectShow Classes