# client.overlay_check

- **Language:** C
- **Kind:** attribute
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tmux.h#L1752
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-struct-client-overlay_check/

```c
overlay_check_cb overlay_check;
```

## Referenced by

- [`popup_draw_cb`](/en/tmux/3.2a/reference/c-function-popup-c-popup_draw_cb/) (function)
- [`popup_job_update_cb`](/en/tmux/3.2a/reference/c-function-popup-c-popup_job_update_cb/) (function)
- [`screen_redraw_draw_borders_cell`](/en/tmux/3.2a/reference/c-function-screen-redraw-c-screen_redraw_draw_borders_cell/) (function)
- [`server_client_clear_overlay`](/en/tmux/3.2a/reference/c-function-server_client_clear_overlay/) (function)
- [`server_client_set_overlay`](/en/tmux/3.2a/reference/c-function-server_client_set_overlay/) (function)
- [`tty_check_overlay`](/en/tmux/3.2a/reference/c-function-tty-c-tty_check_overlay/) (function)

## Referenced declarations

- [`overlay_check_cb`](/en/tmux/3.2a/reference/c-typedef-overlay_check_cb/) (typealias)