IMFTopologyNode::GetTopoNodeID method (mfidl.h)

Retrieves the identifier of the node.

Syntax

HRESULT GetTopoNodeID(
  [out] TOPOID *pID
);

Parameters

[out] pID

Receives the identifier.

Return value

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Remarks

When a node is first created, it is assigned an identifier. Node identifiers are unique within a topology, but can be reused across several topologies. The topology loader uses the identifier to look up nodes in the previous topology, so that it can reuse objects from the previous topology.

To find a node in a topology by its identifier, call IMFTopology::GetNodeByID.

Requirements

See also

IMFTopologyNode

TOPOID

Topologies