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 | Windows Vista |
| Header | dispmprt.h (include Dispmprt.h) |