// dispmprt.h

typedef struct _DXGK_GENERIC_DESCRIPTOR {
  WCHAR HardwareId[DXGK_MAX_REG_SZ_LEN];
  WCHAR InstanceId[DXGK_MAX_REG_SZ_LEN];
  WCHAR CompatibleId[DXGK_MAX_REG_SZ_LEN];
  WCHAR DeviceText[DXGK_MAX_REG_SZ_LEN];
} DXGK_GENERIC_DESCRIPTOR, *PDXGK_GENERIC_DESCRIPTOR;
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Windows Driver Kit DDI reference (ns-dispmprt-_dxgk_generic_descriptor)

_DXGK_GENERIC_DESCRIPTOR structure

Description

The DXGK_GENERIC_DESCRIPTOR structure contains descriptive information about a child device of the display adapter.

Members

`HardwareId`

A single wide-character string, terminated by two wide NULL characters, that holds the hardware ID of the child device.

`InstanceId`

A single wide-character string, terminated by two wide NULL characters, that holds the instance ID of the child device.

`CompatibleId`

A sequence of wide-character strings, each of which is terminated by a single wide NULL character. The last string in the sequence is terminated by two wide NULL characters.

`DeviceText`

A single wide-character string, terminated by two wide NULL characters, that holds the device text of the child device.

Remarks

The display adapter has two types of child devices: TypeVideoOutput and TypeOther. For child devices of type TypeOther, the display port driver passes a DXGK_GENERIC_DESCRIPTOR structure to the display miniport driver's DxgkDdiQueryDeviceDescriptor function. DxgkDdiQueryDeviceDescriptor must fill in the members of the structure.

DXGK_GENERIC_DESCRIPTOR - NtDoc