DXGK_DEVICE_INFO structure (dispmprt.h)

The DXGK_DEVICE_INFO structure holds information that describes a display adapter.

Syntax

typedef struct _DXGK_DEVICE_INFO {
  PVOID             MiniportDeviceContext;
  PDEVICE_OBJECT    PhysicalDeviceObject;
  UNICODE_STRING    DeviceRegistryPath;
  PCM_RESOURCE_LIST TranslatedResourceList;
  LARGE_INTEGER     SystemMemorySize;
  PHYSICAL_ADDRESS  HighestPhysicalAddress;
  PHYSICAL_ADDRESS  AgpApertureBase;
  SIZE_T            AgpApertureSize;
  DOCKING_STATE     DockingState;
} DXGK_DEVICE_INFO, *PDXGK_DEVICE_INFO;

Members

MiniportDeviceContext

A handle to a context block (created and maintained by the display miniport driver) associated with a display adapter.

PhysicalDeviceObject

A pointer to the physical device object (PDO) that represents the display adapter.

DeviceRegistryPath

A Unicode string that holds the registry path of the software key for the display adapter. Registry data should be written only to this path.

TranslatedResourceList

A pointer to a CM_RESOURCE_LIST structure that holds the translated resources assigned to the display adapter.

SystemMemorySize

The size, in bytes, of system memory.

HighestPhysicalAddress

The highest physical address of system memory (RAM).

AgpApertureBase

The base physical address of the AGP aperture. If 0, the display adapter is not an AGP adapter, or AGP resources were not found.

AgpApertureSize

The size, in bytes, of the AGP aperture. If 0, the display adapter is not an AGP adapter, or AGP resources were not found.

DockingState

The state of a portable computer that can be attached to a docking station.

Remarks

The display miniport driver's DxgkDdiStartDevice function allocates a DXGK_DEVICE_INFO structure and calls DxgkCbGetDeviceInformation to get that structure filled in with information about a display adapter. Five of the structure members (Version, SystemMemorySize, HighestPhysicalAddress, AgpApertureBase, and AgpApertureSize) hold general information and are not associated with a particular display adapter. Those members are included in the DXGK_DEVICE_INFO structure because they provide information that DxgkDdiStartDevice requires to initialize the driver and display adapter hardware.

Requirements

Requirement	Value
Minimum supported client	Available in Windows Vista and later versions of the Windows operating systems.
Header	dispmprt.h (include Dispmprt.h)

See also

CM_RESOURCE_LIST

DxgkCbGetDeviceInformation

DxgkDdiStartDevice