IFilterGraph Interface

Microsoft DirectShow 9.0

IFilterGraph Interface

The IFilterGraph interface provides methods for building a filter graph. An application can use it to add filters to the graph, connect or disconnect filters, remove filters, and perform other basic operations. However, the IGraphBuilder interface inherits from this interface and provides additional methods that are more sophisticated. Therefore, applications should use IGraphBuilder rather than using IFilterGraph directly.

The filter graph manager implements this interface.

In addition to the methods inherited from IUnknown, the IFilterGraph interface exposes the following methods.

Method	Description
AddFilter	Adds a filter to the graph.
RemoveFilter	Removes a filter from the graph.
EnumFilters	Provides an enumerator for all filters in the graph.
FindFilterByName	Finds a filter that was added with a specified name.
ConnectDirect	Connects two pins directly (without intervening filters).
Reconnect	Breaks the existing pin connection and reconnects it to the same pin.
Disconnect	Disconnects a specified pin.
SetDefaultSyncSource	Sets the reference clock to the default clock.

Requirements

Header: Declared in Strmif.h; include Dshow.h.

Library: Use Strmiids.lib.