EVT_POS_CX_DEVICE_OWNERSHIP_CHANGE callback function (poscx.h)

Article
02/22/2024

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.

Syntax

EVT_POS_CX_DEVICE_OWNERSHIP_CHANGE EvtPosCxDeviceOwnershipChange;

void EvtPosCxDeviceOwnershipChange(
  [in]           WDFDEVICE device,
  [in, optional] WDFFILEOBJECT oldOwnerFileObj,
  [in, optional] WDFFILEOBJECT newOwnerFileObj
)
{...}

Parameters

[in] device

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

[in, optional] oldOwnerFileObj

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

[in, optional] newOwnerFileObj

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

Return value

None

Requirements

Requirement	Value
Target Platform	Windows
Header	poscx.h (include Poscx.h)

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