Classes > CoreAudioDevicesMan class > Methods > CoreAudioDevices.RenderPartChannelCountGet method

Remarks

Obtains the number of channels of a part embedded inside the given render audio endpoint device.

This method is only intended for usage with Windows Vista and later versions: further information about management of audio devices in Windows Vista and later versions can be found inside the How to access settings of audio devices in Windows Vista and later versions tutorial.

For further details about methods related to the management of core audio devices refer to the CoreAudioDevicesMan class.

Syntax

[Visual Basic]

Public Function RenderPartChannelCountGet (

nDeviceIndex as Int16,

nPartId as enumCoreAudioRenderParts,

ByRef nChannelsCount as Int16

) as enumErrorCodes

[C#]

public enumErrorCodes RenderPartChannelCountGet (

Int16 nDeviceIndex,

enumCoreAudioRenderParts nPartId,

ref Int16 nChannelsCount

);

[C++]

public: enumErrorCodes RenderPartChannelCountGet (

Int16 nDeviceIndex,

enumCoreAudioRenderParts nPartId,

Int16 __gc *nChannelsCount

);

Parameter

Description

nDeviceIndex

Zero-based index of the render audio endpoint device. The total number of render audio endpoint devices can be obtained through the CoreAudioDevices.CountGet method passing DEVICE_DATA_FLOW_RENDER to the nDataFlow parameter.

nPartId

Identifier of the render part.

Supported values are the following:

Mnemonic Value	Value	Meaning
RENDER_PART_CD_AUDIO	0	CD Audio
RENDER_PART_MIC	1	Microphone
RENDER_PART_LINEIN	2	Line In

nChannelsCount

Reference that, on return from the method call, will contain the number of channels of the part. The returned value is 0 if the requested part is unsupported by the render audio endpoint device.

Return value

Value	Meaning

Negative value	An error occurred (see the LastError property for further error details)
enumErrorCodes.NOERROR (0)	The method call was successful.