// wdm.h

typedef struct _CM_KEYBOARD_DEVICE_DATA {
  USHORT Version;
  USHORT Revision;
  UCHAR  Type;
  UCHAR  Subtype;
  USHORT KeyboardFlags;
} CM_KEYBOARD_DEVICE_DATA, *PCM_KEYBOARD_DEVICE_DATA;
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Windows Driver Kit DDI reference (ns-wdm-_cm_keyboard_device_data)

_CM_KEYBOARD_DEVICE_DATA structure

Description

The CM_KEYBOARD_DEVICE_DATA structure defines a device-type-specific data record that is stored in the \Registry\Machine\Hardware\Description tree for a keyboard peripheral if the system can collect this information during the boot process.

Members

`Version`

The version number of this structure.

`Revision`

The revision of this structure.

`Type`

The type of the keyboard.

`Subtype`

The subtype of the keyboard.

`KeyboardFlags`

Defined by x86 BIOS INT 16h, function 02 as:

Bit	Defined As
7	Insert on.
6	Caps Lock on.
5	Num Lock on.
4	Scroll Lock on.
3	Alt Key is down.
2	Ctrl Key is down.
1	Left shift key is down.
0	Right shift key is down.

CM_KEYBOARD_DEVICE_DATA - NtDoc