|Microsoft DirectX 9.0|
The get_MulticastList method retrieves a list of the multicast addresses to which the IP Sink filter is listening. This method returns a list of IP addresses in 6-byte IEEE 802.3 format; the list is returned as an array of bytes.
HRESULT get_MulticastList( ULONG* pulcbAddresses, BYTE** ppbAddressList );
[out] Pointer to a variable that receives the number of bytes in the returned array.
[out, size_is(*pulcbAddresses)] Pointer to variable that receives an array of bytes, of size *pulcbAddresses. Each IP address is 6 consecutive bytes.
If the method succeeds, it returns S_OK. If it fails, it returns an error code.
The method allocates the memory for the array. The caller must free the memory by calling CoTaskMemFree.