---
UID: NF:bdaiface.IBDA_EthernetFilter.GetMulticastList
title: IBDA_EthernetFilter::GetMulticastList (bdaiface.h)
description: The GetMulticastList method retrieves the list of multicast addresses on the Network Provider.
old-location: mstv\ibda_ethernetfilter_getmulticastlist.htm
tech.root: mstv
ms.assetid: 65ad05c7-eb0e-450e-9bec-d46738f65dcd
ms.date: 12/05/2018
ms.keywords: GetMulticastList, GetMulticastList method [Microsoft TV Technologies], GetMulticastList method [Microsoft TV Technologies],IBDA_EthernetFilter interface, IBDA_EthernetFilter interface [Microsoft TV Technologies],GetMulticastList method, IBDA_EthernetFilter.GetMulticastList, IBDA_EthernetFilter::GetMulticastList, IBDA_EthernetFilterGetMulticastList, bdaiface/IBDA_EthernetFilter::GetMulticastList, mstv.ibda_ethernetfilter_getmulticastlist
f1_keywords:
- bdaiface/IBDA_EthernetFilter.GetMulticastList
dev_langs:
- c++
req.header: bdaiface.h
req.include-header: 
req.target-type: Windows
req.target-min-winverclnt: 
req.target-min-winversvr: 
req.kmdf-ver: 
req.umdf-ver: 
req.ddi-compliance: 
req.unicode-ansi: 
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req.assembly: 
req.type-library: 
req.lib: 
req.dll: 
req.irql: 
topic_type:
- APIRef
- kbSyntax
api_type:
- COM
api_location:
- bdaiface.h
api_name:
- IBDA_EthernetFilter.GetMulticastList
targetos: Windows
req.typenames: 
req.redist: 
ms.custom: 19H1
---

# IBDA_EthernetFilter::GetMulticastList


## -description



The <b>GetMulticastList</b> method retrieves the list of multicast addresses on the Network Provider.




## -parameters




### -param pulcbAddresses [in, out]

On input, specifies the maximum number of addresses to retrieve, multiplied by the number of bytes per address. On output, receives the actual number of bytes retrieved.


### -param pAddressList [out]

Pointer that receives an array of addresses whose size in bytes is equal to <i>ulcbAddresses</i>. See Remarks.


## -returns



If the method succeeds, it returns S_OK. If it fails, it returns an error code.




## -remarks



The declaration of <i>pAddressList</i> is not COM compliant. As a workaround, the client should allocate the <i>pAddressList</i> buffer. The buffer should be the same size as advertised in the <i>pulcbAddresses</i> parameter. The network provider will just fill in the buffer allocated by the caller.




## -see-also




<a href="https://docs.microsoft.com/windows/desktop/DirectShow/error-and-success-codes">Error and Success Codes</a>



<a href="https://docs.microsoft.com/windows/desktop/api/bdaiface/nn-bdaiface-ibda_ethernetfilter">IBDA_EthernetFilter Interface</a>
 

 

