IAudioEndpointVolume Interface Reference

Inheritance diagram for IAudioEndpointVolume:

Collaboration diagram for IAudioEndpointVolume:

Public Member Functions
HRESULT	RegisterControlChangeNotify ([in] IAudioEndpointVolumeCallback *pNotify)
HRESULT	UnregisterControlChangeNotify ([in] IAudioEndpointVolumeCallback *pNotify)
HRESULT	GetChannelCount ([out] UINT *pnChannelCount)
HRESULT	SetMasterVolumeLevel ([in] FLOAT fLevelDB, [unique, in] LPCGUID pguidEventContext)
HRESULT	SetMasterVolumeLevelScalar ([in] FLOAT fLevel, [unique, in] LPCGUID pguidEventContext)
HRESULT	GetMasterVolumeLevel ([out] FLOAT *fLevelDB)
HRESULT	GetMasterVolumeLevelScalar ([out] FLOAT *fLevel)
HRESULT	SetChannelVolumeLevel ([in] UINT nChannel, [in] FLOAT fLevelDB, [unique, in] LPCGUID pguidEventContext)
HRESULT	SetChannelVolumeLevelScalar ([in] UINT nChannel, [in] FLOAT fLevel, [unique, in] LPCGUID pguidEventContext)
HRESULT	GetChannelVolumeLevel ([in] UINT nChannel, [out] FLOAT *fLevelDB)
HRESULT	GetChannelVolumeLevelScalar ([in] UINT nChannel, [out] FLOAT *fLevel)
HRESULT	SetMute ([in] BOOL bMute, [unique, in] LPCGUID pguidEventContext)
HRESULT	GetMute ([out] BOOL *bMute)
HRESULT	GetVolumeStepInfo ([out] UINT *pnStep, [out] UINT *pnStepCount)
HRESULT	VolumeStepUp ([unique, in] LPCGUID pguidEventContext)
HRESULT	VolumeStepDown ([unique, in] LPCGUID pguidEventContext)
HRESULT	QueryHardwareSupport ([out] DWORD *pdwHardwareSupportMask)
HRESULT	GetVolumeRange ([out] FLOAT *pflVolumeMindB, [out] FLOAT *pflVolumeMaxdB, [out] FLOAT *pflVolumeIncrementdB)
Public Member Functions inherited from IUnknown
HRESULT	QueryInterface ([in] REFIID riid, [out, iid_is(riid)] void **ppvObject)
ULONG	AddRef ()
ULONG	Release ()

Additional Inherited Members
Public Types inherited from IUnknown
typedef IUnknown *	LPUNKNOWN

Detailed Description

Definition at line 63 of file endpointvolume.idl.

Member Function Documentation

GetChannelCount()

HRESULT IAudioEndpointVolume::GetChannelCount

(

[out] UINT *

pnChannelCount

)

GetChannelVolumeLevel()

HRESULT IAudioEndpointVolume::GetChannelVolumeLevel	(	[in] UINT	nChannel,
		[out] FLOAT *	fLevelDB
	)

GetChannelVolumeLevelScalar()

HRESULT IAudioEndpointVolume::GetChannelVolumeLevelScalar	(	[in] UINT	nChannel,
		[out] FLOAT *	fLevel
	)

GetMasterVolumeLevel()

HRESULT IAudioEndpointVolume::GetMasterVolumeLevel

(

[out] FLOAT *

fLevelDB

)

GetMasterVolumeLevelScalar()

HRESULT IAudioEndpointVolume::GetMasterVolumeLevelScalar

(

[out] FLOAT *

fLevel

)

GetMute()

HRESULT IAudioEndpointVolume::GetMute

(

[out] BOOL *

bMute

)

GetVolumeRange()

HRESULT IAudioEndpointVolume::GetVolumeRange	(	[out] FLOAT *	pflVolumeMindB,
		[out] FLOAT *	pflVolumeMaxdB,
		[out] FLOAT *	pflVolumeIncrementdB
	)

GetVolumeStepInfo()

HRESULT IAudioEndpointVolume::GetVolumeStepInfo	(	[out] UINT *	pnStep,
		[out] UINT *	pnStepCount
	)

QueryHardwareSupport()

HRESULT IAudioEndpointVolume::QueryHardwareSupport

(

[out] DWORD *

pdwHardwareSupportMask

)

RegisterControlChangeNotify()

HRESULT IAudioEndpointVolume::RegisterControlChangeNotify

(

[in] IAudioEndpointVolumeCallback *

pNotify

)

SetChannelVolumeLevel()

HRESULT IAudioEndpointVolume::SetChannelVolumeLevel	(	[in] UINT	nChannel,
		[in] FLOAT	fLevelDB,
		[unique, in] LPCGUID	pguidEventContext
	)

SetChannelVolumeLevelScalar()

HRESULT IAudioEndpointVolume::SetChannelVolumeLevelScalar	(	[in] UINT	nChannel,
		[in] FLOAT	fLevel,
		[unique, in] LPCGUID	pguidEventContext
	)

SetMasterVolumeLevel()

HRESULT IAudioEndpointVolume::SetMasterVolumeLevel	(	[in] FLOAT	fLevelDB,
		[unique, in] LPCGUID	pguidEventContext
	)

SetMasterVolumeLevelScalar()

HRESULT IAudioEndpointVolume::SetMasterVolumeLevelScalar	(	[in] FLOAT	fLevel,
		[unique, in] LPCGUID	pguidEventContext
	)

SetMute()

HRESULT IAudioEndpointVolume::SetMute	(	[in] BOOL	bMute,
		[unique, in] LPCGUID	pguidEventContext
	)

UnregisterControlChangeNotify()

HRESULT IAudioEndpointVolume::UnregisterControlChangeNotify

(

[in] IAudioEndpointVolumeCallback *

pNotify

)

VolumeStepDown()

HRESULT IAudioEndpointVolume::VolumeStepDown

(

[unique, in] LPCGUID

pguidEventContext

)

VolumeStepUp()

HRESULT IAudioEndpointVolume::VolumeStepUp

(

[unique, in] LPCGUID

pguidEventContext

)

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

• sdk/include/psdk/endpointvolume.idl