# popup_data.ly

- **Language:** C
- **Kind:** attribute
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/popup.c#L74
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-struct-popup_data-ly/

```c
u_int ly;
```

## Referenced by

- [`popup_key_cb`](/en/tmux/3.7c/reference/c-function-popup-c-popup_key_cb/) (function)