# AccessibilityTextQueryHeader

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

Accessibility text query header.

```ds title="AccessibilityTextQueryHeader"
export struct AccessibilityTextQueryHeader {
    requestId: AccessibilityTextRequestId;
    window: WindowHandle;
    nodeId: AccessibilityNodeId;
    revision: AccessibilityTextRevision;
    timestampNs: uint64;
    sequence: AccessibilityTextSequence;
    droppedCount: uint64;
}
```

[language/library/src/accessibility/binding/text.ds:183:198](https://github.com/destack-sh/destack/blob/main/language/library/src/accessibility/binding/text.ds#L183-L198)

## Members

### `requestId: AccessibilityTextRequestId`

Request identifier.

### `window: WindowHandle`

Target window.

### `nodeId: AccessibilityNodeId`

Target node identifier.

### `revision: AccessibilityTextRevision`

Text revision current when the query was issued.

### `timestampNs: uint64`

Event timestamp in nanoseconds.

### `sequence: AccessibilityTextSequence`

Event sequence number.

### `droppedCount: uint64`

Number of queries dropped before this query.