# DisplayEventWindowFocusChanged

`import { DisplayEventWindowFocusChanged } from "destack:display/binding";`

Window focus changed display event.

```ds title="DisplayEventWindowFocusChanged"
export struct DisplayEventWindowFocusChanged {
    kind: "windowFocusChanged";
    timestampNs: uint64;
    sequence: uint64;
    droppedCount: uint64;
    backend: DisplayBackendKind;
    window: WindowHandle;
    isFocused: boolean;
}
```

[language/library/src/display/binding/event.ds:166:181](https://github.com/destack-sh/destack/blob/main/language/library/src/display/binding/event.ds#L166-L181)

## Members

### `kind: "windowFocusChanged"`

Event discriminator.

### `timestampNs: uint64`

Event timestamp in nanoseconds.

### `sequence: uint64`

Event sequence number.

### `droppedCount: uint64`

Number of events dropped before this event.

### `backend: DisplayBackendKind`

Display backend.

### `window: WindowHandle`

Window handle.

### `isFocused: boolean`

Whether the window is focused.