_KEYBOARD_INDICATOR_PARAMETERS structure

KEYBOARD_INDICATOR_PARAMETERS specifies the state of a keyboard's indicator LEDs.

Syntax

typedef struct _KEYBOARD_INDICATOR_PARAMETERS {
  USHORT UnitId;
  USHORT LedFlags;
} KEYBOARD_INDICATOR_PARAMETERS, *PKEYBOARD_INDICATOR_PARAMETERS;

Members

UnitId

Specifies the unit number of a keyboard device. A keyboard device name has the format \Device\KeyboardPortN, where the suffix N is the unit number of the device. For example, a device, whose name is \Device\KeyboardPort0, has a unit number of zero, and a device, whose name is \Device\KeyboardPort1, has a unit number of one.

LedFlags

Specifies a bitwise OR of zero or more of the following LED flags:

LED Flag Meaning
KEYBOARD_CAPS_LOCK_ON CAPS LOCK LED is on.
KEYBOARD_LED_INJECTED Used by a Terminal Server.
KEYBOARD_NUM_LOCK_ON NUM LOCK LED is on.
KEYBOARD_SCROLL_LOCK_ON SCROLL LOCK LED is on.
KEYBOARD_SHADOW Used by a Terminal Server.

Remarks

This structure is used with IOCTL_KEYBOARD_QUERY_INDICATORS and IOCTL_KEYBOARD_SET_INDICATORS requests to query and set keyboard indicator LEDs.

Requirements

   
Header ntddkbd.h (include Ntddkbd.h)

See Also

IOCTL_KEYBOARD_QUERY_ATTRIBUTES

IOCTL_KEYBOARD_QUERY_INDICATORS

IOCTL_KEYBOARD_QUERY_INDICATOR_TRANSLATION

IOCTL_KEYBOARD_QUERY_TYPEMATIC

IOCTL_KEYBOARD_SET_INDICATORS

IOCTL_KEYBOARD_SET_TYPEMATIC

KEYBOARD_UNIT_ID_PARAMETER