# AccessibilityActionHeader

`import { AccessibilityActionHeader } from "destack:accessibility/binding";`

Accessibility action header.

```ds title="AccessibilityActionHeader"
export struct AccessibilityActionHeader {
    window: WindowHandle;
    nodeId: AccessibilityNodeId;
    timestampNs: uint64;
    sequence: AccessibilityActionSequence;
    droppedCount: uint64;
}
```

[language/library/src/accessibility/binding/action.ds:27:38](https://github.com/destack-sh/destack/blob/main/language/library/src/accessibility/binding/action.ds#L27-L38)

## Members

### `window: WindowHandle`

Target window.

### `nodeId: AccessibilityNodeId`

Target node identifier.

### `timestampNs: uint64`

Event timestamp in nanoseconds.

### `sequence: AccessibilityActionSequence`

Event sequence number.

### `droppedCount: uint64`

Number of actions dropped before this action.