Enables or disables a DirectShow filter.


#include "ltmm.h"

Language Syntax
C HRESULT IltmmFilterEnum_put_Enable(pInput, Name, newVal)
C++ HRESULT put_Enable(Name, newVal)


IltmmFilterEnumt *pInput

Pointer to an IltmmFilterEnum Interface.


Name is a string that can show either the Display Name or the Friendly Name of the filter. It is better to use Display Name since display names are unique. Two filters can be different and yet still have the same Friendly Name. When two Friendly Names are used, this function works on the first filter it internally enumerates with the specified friendly name.


Flag that indicates whether to enable or disable the audio input. Possible values are:

Value Meaning
VARIANT_TRUE Enable the input.
VARIANT_FALSE Disable the input.


Value Meaning
S_OK The function was successful.
<> S_OK An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.


A DirectShow filter is enabled if its Merit is above 0x00200000. Otherwise it is disabled.

Merit values are used when building filter graphs. For more information, refer to the Microsoft documentation for DirectShow Merit.

A Display Name uniquely identifies a DirectShow filter (or any filter). Display names for software filters have the following format:


For example, Microsoft MPEG-2 Splitter display name is:


Since a Friendly Name is not unique there can be more than one filter with the same name. Despite this, it is useful as a descriptive name in user interfaces. For example, the Friendly Name for Microsoft MPEG-2 Splitter is

MPEG-2 Splitter

Required DLLs and Libraries


Win32, x64.

See Also




Language Example
C++ IltmmFilterEnum
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© 1991-2023 LEAD Technologies, Inc. All Rights Reserved.