# control.Event.SubscriptionChanged.window

- **Module:** control.Event
- **Package:** libtmux
- **Language:** Rust
- **Kind:** attribute
- **Source:** https://github.com/libtmux/libtmux-rs/blob/84de9258a07d10bdd5f6da01b016a9ae06fe1210/crates/libtmux/src/control.rs#L249
- **Page:** https://libtmux.org/en/rs/latest/reference/control-event-subscriptionchanged-window/

```rs
window: Option<WindowId>
```

The window it is about, when the subscription names one.