xref: /docs/en/application-dev/device/input/shortkey-guidelines.md (revision e41f4b71)

# Shortcut Key Development

## When to Use

You can set the delay for starting an ability using the shortcut key. An example is to take a screenshot 5 seconds after the shortcut key is pressed.

## Modules to Import

```js
import { shortKey } from '@kit.InputKit';
```

## Available APIs

The following table lists the common APIs provided by the **shortKey** module. For details, see [ohos.multimodalInput.shortKey](../../reference/apis-input-kit/js-apis-shortKey-sys.md).

| API | Description|
| ------------------------------------------------------------ | -------------------------- |
| setKeyDownDuration(businessKey: string, delay: number, callback: AsyncCallback<void>): void |Sets the delay for starting an ability using the shortcut key.|

## How to Develop

The following describes how to take a screenshot five seconds after the shortcut key is pressed.

```js
import { shortKey } from '@kit.InputKit';
try {
  shortKey.setKeyDownDuration("screenshot", 500, (error) => {// Set the delay to 5 seconds (500 ms)
    if (error) {
      console.log(`Set key down duration failed, error: ${JSON.stringify(error, [`code`, `message`])}`);
      return;
    }
    console.log(`Set key down duration success`);
  });
} catch (error) {
  console.log(`Set key down duration failed, error: ${JSON.stringify(error, [`code`, `message`])}`);
}
```