# LibTmux.TmuxPaneGoneEvent

- **Module:** LibTmux
- **Package:** LibTmux
- **Language:** C#
- **Kind:** struct
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux/ControlMode/PaneObservation.cs#L17
- **Page:** https://libtmux.org/en/csharp/latest/reference/libtmux-tmuxpanegoneevent/

The pane a stream was watching left its window's arrangement.

tmux's control protocol has no notification naming a killed pane
specifically, only a general <c>%layout-change</c> or window-close for the
window it was in. This is synthesized by <see cref="PaneObservation" />
once it confirms, by asking tmux directly, that the watched pane no longer
resolves - after output buffered by a watermark-backed control session has
been delivered.