# format_cb_window_id

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/format.c#L2231
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-function-format-c-format_cb_window_id/

```c
static void * format_cb_window_id(struct format_tree *ft)
```

## Parameters

- `ft` (`struct format_tree *`)

## Calls

- [`format_printf`](/en/tmux/3.2a/reference/c-function-format-c-format_printf/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/format.c#L2234)

## Referenced declarations

- [`format_tree`](/en/tmux/3.2a/reference/c-struct-format_tree/) (struct)
- [`window.id`](/en/tmux/3.2a/reference/c-struct-window-id/) (attribute)
- [`format_tree.w`](/en/tmux/3.2a/reference/c-struct-format_tree-w/) (attribute)