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CMediaPosition Class (Compact 2013)

3/26/2014

CUnknown Class

     IDispatch

**** IMediaPosition Interface

**          CMediaPosition Class**

This class is a base class that handles the IDispatch methods of the dual-interface IMediaPosition. It leaves the properties and methods as pure virtual.

The CMediaPosition::GetIDsOfNames, CMediaPosition::GetTypeInfo, CMediaPosition::GetTypeInfoCount, and CMediaPosition::Invoke methods 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 IMediaPosition methods.

Member Functions

Member function

Description

CMediaPosition

Constructs a CMediaPosition 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 CMediaPosition::Invoke member function.

GetTypeInfo

Retrieves a type-information object, which can retrieve 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