COM Objects > WASAPI object > Methods > WASAPI.MixerInputDeviceIsAttached method

Remarks

Checks if the given WASAPI input device has been previously attached to the WASAPI input mixer through a call to the WASAPI.MixerInputDeviceAttach method.

This method is only intended for usage with Windows Vista and later versions.

For further details about the use of WASAPI see the WASAPI object and the How to manage audio flow through WASAPI tutorial.

Syntax

[Visual Basic]

control.WASAPI.MixerInputDeviceIsAttached (

nDeviceIndex as Integer,

nDeviceType as enumWasapiDeviceTypes,

bIsAttached as enumBoolean

) as enumErrorCodes

[C++]

short control.WASAPI.MixerInputDeviceIsAttached (

short nDeviceIndex,

short nDeviceType,

long *bIsAttached

);

Parameter

Description

nDeviceIndex

Number representing the zero-based index of the WASAPI input device of interest. The total number of available WASAPI devices can be obtained using the WASAPI.DeviceGetCount method.

nDeviceType

The type of input device.

Supported values are the following:

Mnemonic Value	Value	Meaning
WASAPI_DEVICE_TYPE_CAPTURE	1	Audio capture device.
WASAPI_DEVICE_TYPE_LOOPBACK	2	Audio loopback device.

bIsAttached

Reference that, on return from the method call, will contain the attached state.

Supported values are the following:

Mnemonic constant	Value	Meaning
BOOL_FALSE	0	The input device is not attached or has already been detached
BOOL_TRUE	1	The input device is attached

Return value

Value	Meaning

Negative value	An error occurred, check the LastError property value in order to get the error code
enumErrorCodes.ERR_NOERROR (0)	The method call was successful