KEYBOARD_TYPEMATIC_PARAMETERS structure (ntddkbd.h)
KEYBOARD_TYPEMATIC_PARAMETERS specifies a keyboard's typematic settings.
Syntax
typedef struct _KEYBOARD_TYPEMATIC_PARAMETERS {
USHORT UnitId;
USHORT Rate;
USHORT Delay;
} KEYBOARD_TYPEMATIC_PARAMETERS, *PKEYBOARD_TYPEMATIC_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.
Rate
Specifies the rate at which character output from a keyboard repeats, in characters per second, after a key is pressed and continuously held down. The minimum possible value is KEYBOARD_TYPEMATIC_RATE_MINIMUM and the maximum possible value is KEYBOARD_TYPEMATIC_RATE_MAXIMUM. The default value is KEYBOARD_TYPEMATIC_RATE_DEFAULT.
Delay
Specifies the amount of time that must elapse, in milliseconds, after a key is pressed and continuously held down, before the character output from a keyboard begins to repeat. The minimum possible delay is KEYBOARD_TYPEMATIC_DELAY_MINIMUM and the maximum possible delay is KEYBOARD_TYPEMATIC_DELAY_MAXIMUM. The default value is KEYBOARD_TYPEMATIC_DELAY_DEFAULT.
Remarks
This structure is used with IOCTL_KEYBOARD_QUERY_TYPEMATIC and IOCTL_KEYBOARD_SET_TYPEMATIC requests to query and set a keyboard's typematic settings.
Requirements
| Requirement | Value |
|---|---|
| Header | ntddkbd.h (include Ntddkbd.h) |
See also
IOCTL_KEYBOARD_QUERY_ATTRIBUTES
IOCTL_KEYBOARD_QUERY_INDICATORS
IOCTL_KEYBOARD_QUERY_INDICATOR_TRANSLATION