Classes > WASAPIMan class > Methods > WASAPI.DeviceIsStarted method

Remarks

Checks if the given WASAPI device has been previously started through the WASAPI.DeviceStartExcusive or WASAPI.DeviceStartShared methods.

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

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

Syntax

[Visual Basic]

Public Function DeviceIsStarted (

nDeviceIndex as Int32,

nDeviceType as enumWasapiDeviceTypes

) as Boolean

[C#]

public bool DeviceIsStarted (

Int32 nDeviceIndex,

enumWasapiDeviceTypes nDeviceType

);

[C++]

public: bool DeviceIsStarted (

Int32 nDeviceIndex,

enumWasapiDeviceTypes nDeviceType

);

Parameter

Description

nDeviceIndex

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

nDeviceType

The type of device.

Supported values are the following:

Mnemonic Value	Value	Meaning
WASAPI_DEVICE_TYPE_RENDER	0	Audio rendering device.
WASAPI_DEVICE_TYPE_CAPTURE	1	Audio capture device.
WASAPI_DEVICE_TYPE_LOOPBACK	2	Audio loopback device.

Return value

Value	Meaning

false	The given WASAPI device is not started
true	The given WASAPI device is started