|Microsoft DirectX 9.0|
The GetNodeTypes method retrieves a list of all the node types in the template topology for this filter and network type.
HRESULT GetNodeTypes( ULONG* pulcNodeTypes, ULONG ulcNodeTypesMax, ULONG rgulNodeTypes );
[out] Pointer that receives the number of node types in the list.
[in] The maximum number of node types that can be held by the rgulNodeTypes buffer.
[out] Pointer to a buffer that receives the list of node types.
If the method succeeds, it returns S_OK. If it fails, it returns an error code.
The IBDA_Topology interface is implemented by a BDA Device Filter. It is used by a Network Provider to query a BDA Device Filter's possible topologies (template topology) and to configure the device with an appropriate topology for the current tuning request. It is also used to get an IUnknown to a control node which may be used to set specific tuning information.