Copyright © 2005-2018 MultiMedia Soft

CoreAudioDevices.DefaultSet method

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Remarks

 

Sets the system default device for the given role.

 

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 DefaultSet (

nDataFlow as enumCoreAudioDataFlows,

nRole as enumCoreAudioRoles,

nDeviceIndex as Int16

) as enumErrorCodes


 

[C#]

public enumErrorCodes DefaultSet (

enumCoreAudioDataFlows nDataFlow,

enumCoreAudioRoles nRole,

Int16 nDeviceIndex

);


 

[C++]

public: enumErrorCodes DefaultSet (

enumCoreAudioDataFlows nDataFlow,

enumCoreAudioRoles nRole,

Int16 nDeviceIndex

);


 

Parameter

Description

 

 

nDataFlow

Direction in which audio data flows between an audio endpoint device and an application.

Supported values are the following:

Mnemonic Value

Value

Meaning

DEVICE_DATA_FLOW_RENDER

0

Audio rendering stream. Audio data flows from the application to the audio endpoint device, which renders the stream

DEVICE_DATA_FLOW_CAPTURE

1

Audio capture stream. Audio data flows from the audio endpoint device that captures the stream, to the application.

nRole

The role that the system has assigned to an audio endpoint device.

Supported values are the following:

Mnemonic Value

Value

Meaning

DEVICE_ROLE_CONSOLE

0

Games, system notification sounds, and voice commands

DEVICE_ROLE_MULTIMEDIA

1

Music, movies, narration, and live music recording

DEVICE_ROLE_COMMUNICATIONS

2

Voice communications

nDeviceIndex

The zero-based index of the audio endpoint device to set as system default.

 

 

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.