Share via

BTH_HCI_IOCTL_GET_LOOPBACK

  • Article

This IOCTL retrieves the loopback status.

Parameters

  • hDeviceContext
    [in] Device context handle.

  • fSelector
    [in] Equals BTH_HCI_IOCTL_GET_LOOPBACK.

  • cInBuffer
    [in] Equals 0.

  • pInBuffer
    Not used.

  • cOutBuffer
    [in] Equals 4.

  • pOutBuffer
    [in] Must point to an aligned unsigned integer.

    [out] Gets loopback status.

  • pcDataReturned
    [out] Equals cOutBuffer.

Return Values

If the call succeeds, the return value is ERROR_SUCCESS.

If the function fails, the following table shows a list of possible error values.

Error value Description
ERROR_INVALID_PARAMETER Parameters are invalid (buffers are not properly sized).
ERROR_SERVICE_NOT_ACTIVE HCI is not active or there is no hardware.

Requirements

OS Versions: Windows CE .NET 4.0 and later.
Header: Bt_ddi.h.

Last updated on Wednesday, April 13, 2005

© 2005 Microsoft Corporation. All rights reserved.