DXGKCB_IS_DEVICE_PRESENT callback function (dispmprt.h)

The DxgkCbIsDevicePresent function determines whether a specified PCI device is present.

Syntax

DXGKCB_IS_DEVICE_PRESENT DxgkcbIsDevicePresent;

NTSTATUS DxgkcbIsDevicePresent(
  [in]  HANDLE DeviceHandle,
  [in]  PPCI_DEVICE_PRESENCE_PARAMETERS DevicePresenceParameters,
  [out] PBOOLEAN DevicePresent
)
{...}

Parameters

[in] DeviceHandle

A handle that represents a display adapter. The display miniport driver previously obtained this handle in the DeviceHandle member of the DXGKRNL_INTERFACE structure that was passed to DxgkDdiStartDevice.

[in] DevicePresenceParameters

A pointer to a PCI_DEVICE_PRESENCE_PARAMETERS structure (defined in Wdm.h) that the caller fills in with information that identifies the device.

[out] DevicePresent

A pointer to a Boolean variable that receives TRUE if the device is present or FALSE if the device is not present.

Return value

DxgkCbIsDevicePresent returns STATUS_SUCCESS if it succeeds. Otherwise, it returns one of the error codes defined in Ntstatus.h.

Requirements