IDistributorNotify::NotifyGraphChange

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Windows Embedded CE 6.0 R3

4/8/2010

This method is called when the set of filters in the filter graph change or their connections change.

Syntax

HRESULT NotifyGraphChange( );

Parameters

None.

Return Value

Returns an HRESULT value that depends on the implementation. HRESULT can be one of the following standard constants, or other values not listed.

Remarks

This method is called whenever an FilterGraph::AddFilter, IFilterGraph::RemoveFilter, or IFilterGraph::ConnectDirect method is called or a method is called that will lead to one of these being called (such as IGraphBuilder::RenderFile).

Make sure you use Release on any held filters that have been removed at this point.

For performance reasons, PIDs might choose not to rescan the filters until the PIDs need the interfaces, because there might be several separate notifications sent. However, it is important to release cached interfaces immediately.

Requirements