// poscx.h

EVT_POS_CX_DEVICE_OWNERSHIP_CHANGE EvtPosCxDeviceOwnershipChange;

VOID EvtPosCxDeviceOwnershipChange(
  [in]           WDFDEVICE device,
  [in, optional] WDFFILEOBJECT oldOwnerFileObj,
  [in, optional] WDFFILEOBJECT newOwnerFileObj
)
{...}
View the official Windows Driver Kit DDI reference

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Windows Driver Kit DDI reference (nc-poscx-evt_pos_cx_device_ownership_change)

EVT_POS_CX_DEVICE_OWNERSHIP_CHANGE callback function

Description

The EVT_POS_CX_DEVICE_OWNERSHIP_CHANGE callback is called during the API claim ownership transition. The driver is expected to set the device back to a default state in this routine.

Parameters

`device` [in]

A handle to a framework device object that represents the device.

`oldOwnerFileObj` [in, optional]

The file object of the previous claim owner. This may be NULL if no previous owner.

`newOwnerFileObj` [in, optional]

The file object of the new claim owner. This may be NULL if the device was released without a pending claim request.

View the official Windows Driver Kit DDI reference