# LibTmux::ControlEvent#pane_id

- **Module:** LibTmux
- **Package:** libtmux
- **Language:** Ruby
- **Kind:** method
- **Source:** https://github.com/libtmux/libtmux-ruby/blob/c8b839595d5a30e271e3f9be0d0fe811ddb11b7e/gems/libtmux/lib/libtmux/control.rb#L56
- **Page:** https://libtmux.org/en/ruby/v0.1.0/reference/libtmux-controlevent-pane_id/

```
def pane_id: () -> ::String?
```

Returns the value of attribute pane_id.

Behavior contract: Control evidence.