# popup_check_cb

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/popup.c#L237
- **Page:** https://libtmux.org/en/tmux/latest/reference/c-function-popup-c-popup_check_cb/

```c
static struct visible_ranges * popup_check_cb(struct client *c, void *data, u_int px, u_int py, u_int nx)
```

## Parameters

- `c` (`struct client *`)
- `data` (`void *`)
- `px` (`u_int`)
- `py` (`u_int`)
- `nx` (`u_int`)

## Calls

- [`fatalx`](/en/tmux/latest/reference/c-function-fatalx/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/popup.c#L252)
- [`menu_check_cb`](/en/tmux/latest/reference/c-function-menu_check_cb/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/popup.c#L250)
- [`server_client_ensure_ranges`](/en/tmux/latest/reference/c-function-server_client_ensure_ranges/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/popup.c#L269)
- [`server_client_overlay_range`](/en/tmux/latest/reference/c-function-server_client_overlay_range/) (function) [Call site](https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/popup.c#L260)

## Referenced by

- [`popup_display`](/en/tmux/latest/reference/c-function-popup_display/) (function)
- [`popup_draw_cb`](/en/tmux/latest/reference/c-function-popup-c-popup_draw_cb/) (function)
- [`popup_job_update_cb`](/en/tmux/latest/reference/c-function-popup-c-popup_job_update_cb/) (function)
- [`popup_write`](/en/tmux/latest/reference/c-function-popup_write/) (function)

## Referenced declarations

- [`client`](/en/tmux/latest/reference/c-struct-client/) (struct)
- [`popup_data.md`](/en/tmux/latest/reference/c-struct-popup_data-md/) (attribute)
- [`visible_range.nx`](/en/tmux/latest/reference/c-struct-visible_range-nx/) (attribute)
- [`popup_data.or`](/en/tmux/latest/reference/c-struct-popup_data-or/) (attribute)
- [`popup_data.px`](/en/tmux/latest/reference/c-struct-popup_data-px/) (attribute)
- [`visible_range.px`](/en/tmux/latest/reference/c-struct-visible_range-px/) (attribute)
- [`popup_data.py`](/en/tmux/latest/reference/c-struct-popup_data-py/) (attribute)
- [`popup_data.r`](/en/tmux/latest/reference/c-struct-popup_data-r/) (attribute)
- [`visible_ranges.ranges`](/en/tmux/latest/reference/c-struct-visible_ranges-ranges/) (attribute)
- [`popup_data.sx`](/en/tmux/latest/reference/c-struct-popup_data-sx/) (attribute)
- [`popup_data.sy`](/en/tmux/latest/reference/c-struct-popup_data-sy/) (attribute)
- [`visible_ranges.used`](/en/tmux/latest/reference/c-struct-visible_ranges-used/) (attribute)
- [`visible_ranges`](/en/tmux/latest/reference/c-struct-visible_ranges/) (struct)