ns-acxrequest-acx_method_item.md

UID	tech.root	title	ms.date	targetos	description	prerelease	req.construct-type	req.ddi-compliance	req.dll	req.header	req.include-header	req.kmdf-ver	req.lib	req.max-support	req.redist	req.target-min-winverclnt	req.target-min-winversvr	req.target-type	req.typenames	req.umdf-ver	req.unicode-ansi	topic_type	api_type	api_location	api_name	f1_keywords	dev_langs
NS:acxrequest._ACX_METHOD_ITEM	audio	ACX_METHOD_ITEM	07/26/2022	Windows	The ACX_METHOD_ITEM structure describes a method item that is the target of an ACX request.	false	structure			acxrequest.h									ACX_METHOD_ITEM, *PACX_METHOD_ITEM			apiref	HeaderDef	acxrequest.h	_ACX_METHOD_ITEM PACX_METHOD_ITEM ACX_METHOD_ITEM	_ACX_METHOD_ITEM acxrequest/_ACX_METHOD_ITEM PACX_METHOD_ITEM acxrequest/PACX_METHOD_ITEM ACX_METHOD_ITEM acxrequest/ACX_METHOD_ITEM	c++

-description

The ACX_METHOD_ITEM structure describes a method item that is the target of an ACX request.

-struct-fields

-field Set

Specifies a GUID that identifies a KS (kernel streaming) method item set.

-field Id

Specifies the member of the member set.

-field Flags

The Flags field can be used to set the following Flags defined in the AcxRequest header.

#define ACX_METHOD_ITEM_FLAG_NONE               0x00000000
#define ACX_METHOD_ITEM_FLAG_SEND               0x00000001 // KSMETHOD_TYPE_SEND
#define ACX_METHOD_ITEM_FLAG_BASICSUPPORT       0x00000200 // KSMETHOD_TYPE_BASICSUPPORT

-field EvtAcxObjectProcessRequest

The EVT_ACX_OBJECT_PROCESS_REQUEST callback method handler associated with this item.

-field Reserved

This field is reserved.

-field ArgsCb

The minimum count in bytes (size) of the Args buffer. Set to zero if no minimum value.

-field ResultCb

The minimum count in bytes (size) of the Result buffer. Set to zero if no minimum value.

-field ResultType

The minimum count in bytes (size) of the Result buffer. Set to zero if there is no minimum value.

-remarks

Example

Example usage is shown below.

static ACX_METHOD_ITEM CircuitMethods[] =
{
    {
        &KSMETHODSETID_AcxTestMethod,
        KSMETHOD_ACXCIRCUIT_TEST_IN2OUT,
        ACX_METHOD_ITEM_FLAG_SEND,
        Codec_EvtTestIn2OutMethodCallback,
        NULL,               // Reserved
        sizeof(ULONG),      // ArgsCb
        sizeof(ULONG),      // ResultCb
    },
};

ACX requirements

Minimum ACX version: 1.0

For more information about ACX versions, see ACX version overview.

-see-also

• acxrequest.h header