# LibTmux.FSharp.Session.activePane

- **Module:** LibTmux.FSharp
- **Package:** LibTmux.FSharp
- **Language:** F#
- **Kind:** function
- **Source:** https://github.com/libtmux/libtmux-dotnet/blob/cf34b255c896d19a97e7d7fabea58609c916012d/src/LibTmux.FSharp/Hierarchy.fsi#L114
- **Page:** https://libtmux.org/en/fsharp/latest/reference/libtmux-fsharp-session-activepane/

```
val activePane: cancellationToken: CancellationToken -> session: LibTmux.Session -> Task<LibTmux.Pane>
```

Reads from tmux the pane the session shows: its current window's active pane.

The core's <c>Session.GetActivePaneAsync</c>; a new session's only pane is this one.

## Parameters

- `cancellationToken` (`CancellationToken`)
- `session` (`LibTmux.Session`)

## Raises

- [`LibTmux.TmuxObjectNotFoundException`](/en/csharp/latest/reference/libtmux-tmuxobjectnotfoundexception/): tmux reports no such pane.