IFilterGraph Interface

This interface is an abstraction representing a graph of filters. All filters in the graph share the same clock. They might or might not also be connected and stream data between them. This interface allows filters to be joined into a graph and operated as a unit. Unlike the IGraphBuilder interface, this interface does not use heuristics to connect and build the filter graph.

When to Implement

This interface is implemented on the filter graph manager and is not intended for implementation by developers.

When to Use

Applications should not use this interface directly but instead should use the IGraphBuilder interface, which inherits this interface.

Methods in Vtable Order

The following table shows the methods that appear in the Vtable beneath the standard COM methods inherited from IUnknown.

Method Description
AddFilter Adds a filter to the graph and gives it a name.
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 the two IPin objects directly (without intervening filters).
Reconnect Breaks the existing pin connection and reconnects it to the same pin.
Disconnect Disconnects this pin, if connected.
SetDefaultSyncSource Sets the default synchronization source (a clock).


DirectShow applications and DirectShow filters have different include file and link library requirements. See Setting Up the Build Environment for more information.

OS Versions: Windows CE 2.12 and later. Version 2.12 requires DXPAK 1.0 or later.

See Also

DirectShow Interfaces

Last updated on Wednesday, April 13, 2005

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