harmony 鸿蒙@ohos.multimodalInput.keyEvent (Key Event)

2022-08-09
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@ohos.multimodalInput.keyEvent (Key Event)

The keyEvent module provides key events reported by a device. It is inherited from InputEvent.

NOTE

The initial APIs of this module are supported since API version 9. Newly added APIs will be marked with a superscript to indicate their earliest API version.

Modules to Import

import {Action, Key, KeyEvent} from '@ohos.multimodalInput.keyEvent';

Action

Key event type.

System capability: SystemCapability.MultimodalInput.Input.Core

Name	Value	Description
CANCEL	0	Cancellation of a key action.
DOWN	1	Pressing of a key.
UP	2	Release of a key.

Key

Defines a key.

System capability: SystemCapability.MultimodalInput.Input.Core

Name	Type	Readable	Writable	Description
code	KeyCode	Yes	No	Keycode.
pressedTime	number	Yes	No	Duration for pressing a key, in μs.
deviceId	number	Yes	No	ID of the device to which the key belongs.

KeyEvent

Key event.

System capability: SystemCapability.MultimodalInput.Input.Core

Name	Type	Readable	Writable	Description
action	Action	Yes	No	Key action.
key	Key	Yes	No	Key for which the event is reported.
unicodeChar	number	Yes	No	Unicode character corresponding to the key.
keys	Key []	Yes	No	List of pressed keys.
ctrlKey	boolean	Yes	No	Whether ctrlKey is being pressed. The value true indicates that the key is pressed, and the value false indicates the opposite.
altKey	boolean	Yes	No	Whether altKey is being pressed.
shiftKey	boolean	Yes	No	Whether shiftKey is being pressed.
logoKey	boolean	Yes	No	Whether logoKey is being pressed.
fnKey	boolean	Yes	No	Whether fnKey is being pressed.
capsLock	boolean	Yes	No	Whether capsLock is active. The value true indicates that capsLock is active, and the value false indicates the opposite.
numLock	boolean	Yes	No	Whether numLock is active.
scrollLock	boolean	Yes	No	Whether scrollLock is active.