IAudioVolumeLevelVtbl Struct Reference

#include <devicetopology.h>

Public Member Functions
BEGIN_INTERFACE	HRESULT (STDMETHODCALLTYPE *QueryInterface)(IAudioVolumeLevel *This
	ULONG (STDMETHODCALLTYPE *AddRef)(IAudioVolumeLevel *This)
	ULONG (STDMETHODCALLTYPE *Release)(IAudioVolumeLevel *This)
	HRESULT (STDMETHODCALLTYPE *GetChannelCount)(IAudioVolumeLevel *This
	HRESULT (STDMETHODCALLTYPE *GetLevelRange)(IAudioVolumeLevel *This
	HRESULT (STDMETHODCALLTYPE *GetLevel)(IAudioVolumeLevel *This
	HRESULT (STDMETHODCALLTYPE *SetLevel)(IAudioVolumeLevel *This
	HRESULT (STDMETHODCALLTYPE *SetLevelUniform)(IAudioVolumeLevel *This
	HRESULT (STDMETHODCALLTYPE *SetLevelAllChannels)(IAudioVolumeLevel *This
	__in_ecount (cChannels) float aLevelsDB[]

Data Fields
BEGIN_INTERFACE REFIID	riid
BEGIN_INTERFACE REFIID __RPC__deref_out void **	ppvObject
__out UINT *	pcChannels
__in UINT	nChannel
__in UINT __out float *	pfMinLevelDB
__in UINT __out float __out float *	pfMaxLevelDB
__in UINT __out float __out float __out float *	pfStepping
__in UINT __out float *	pfLevelDB
__in UINT __in float	fLevelDB
__in UINT __in float __in_opt LPCGUID	pguidEventContext
__in float	fLevelDB
__in float __in_opt LPCGUID	pguidEventContext
__in ULONG	cChannels
__in ULONG __in_opt LPCGUID	pguidEventContext

---

Member Function Documentation

IAudioVolumeLevelVtbl::__in_ecount

(

cChannels

)

BEGIN_INTERFACE IAudioVolumeLevelVtbl::HRESULT

(

STDMETHODCALLTYPE *

QueryInterface

)

IAudioVolumeLevelVtbl::HRESULT

(

STDMETHODCALLTYPE *

GetChannelCount

)

IAudioVolumeLevelVtbl::HRESULT

(

STDMETHODCALLTYPE *

GetLevelRange

)

IAudioVolumeLevelVtbl::HRESULT

(

STDMETHODCALLTYPE *

GetLevel

)

IAudioVolumeLevelVtbl::HRESULT

(

STDMETHODCALLTYPE *

SetLevel

)

IAudioVolumeLevelVtbl::HRESULT

(

STDMETHODCALLTYPE *

SetLevelUniform

)

IAudioVolumeLevelVtbl::HRESULT

(

STDMETHODCALLTYPE *

SetLevelAllChannels

)

IAudioVolumeLevelVtbl::ULONG

(

STDMETHODCALLTYPE *

AddRef

)

IAudioVolumeLevelVtbl::ULONG

(

STDMETHODCALLTYPE *

Release

)

---

Field Documentation

__in ULONG IAudioVolumeLevelVtbl::cChannels

__in UINT __in float IAudioVolumeLevelVtbl::fLevelDB

__in float IAudioVolumeLevelVtbl::fLevelDB

__in UINT IAudioVolumeLevelVtbl::nChannel

__out UINT* IAudioVolumeLevelVtbl::pcChannels

__in UINT __out float* IAudioVolumeLevelVtbl::pfLevelDB

__in UINT __out float __out float* IAudioVolumeLevelVtbl::pfMaxLevelDB

__in UINT __out float* IAudioVolumeLevelVtbl::pfMinLevelDB

__in UINT __out float __out float __out float* IAudioVolumeLevelVtbl::pfStepping

__in UINT __in float __in_opt LPCGUID IAudioVolumeLevelVtbl::pguidEventContext

__in float __in_opt LPCGUID IAudioVolumeLevelVtbl::pguidEventContext

__in ULONG __in_opt LPCGUID IAudioVolumeLevelVtbl::pguidEventContext

BEGIN_INTERFACE REFIID __RPC__deref_out void** IAudioVolumeLevelVtbl::ppvObject

BEGIN_INTERFACE REFIID IAudioVolumeLevelVtbl::riid

---

The documentation for this struct was generated from the following file:

• devicetopology.h