# popup_data.lb

- **Language:** C
- **Kind:** attribute
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/popup.c#L75
- **Page:** https://libtmux.org/en/tmux/latest/reference/c-struct-popup_data-lb/

```c
u_int lb;
```

## Referenced by

- [`popup_key_cb`](/en/tmux/latest/reference/c-function-popup-c-popup_key_cb/) (function)