[DllImportAttribute("xVideo", EntryPoint = "xVideo_CaptureGetDevices")]
public static int BASS_DSHOW_CaptureGetDevices(
	BASSDSHOWCapture deviceType,
	ENUMDEVICESPROC proc,
	IntPtr user
)

<DllImportAttribute("xVideo", EntryPoint := "xVideo_CaptureGetDevices">]
Public Shared Function BASS_DSHOW_CaptureGetDevices ( 
	deviceType As BASSDSHOWCapture,
	proc As ENUMDEVICESPROC,
	user As IntPtr
) As Integer

Parameters

deviceType

Type: Un4seen.Bass.AddOn.DShowBASSDSHOWCapture
The type of capture device to get (one of the BASSDSHOWCapture values, either audio or video).

proc

Type: Un4seen.Bass.AddOn.DShowENUMDEVICESPROC
The user defined callback receiving the available capture devices (see ENUMDEVICESPROC) or to retrieve only the number of available devices.

user

Type: SystemIntPtr
User instance data to pass to the callback function.

Return Value

When using as a proc callback value this will return the number of the devices from the system only.

Another way to get the capture devices is by using the BASS_DSHOW_CallbackItemByIndex(BASSDSHOWCallbackItem, Int32) method.

Reference