DXGK_GENERIC_DESCRIPTOR structure (dispmprt.h)

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

Syntax

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;

Members

HardwareId[DXGK_MAX_REG_SZ_LEN]

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

InstanceId[DXGK_MAX_REG_SZ_LEN]

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

CompatibleId[DXGK_MAX_REG_SZ_LEN]

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[DXGK_MAX_REG_SZ_LEN]

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.

Requirements

See also

DXGK_DEVICE_DESCRIPTOR