# TTY_BLOCK_STOP

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tty.c#L82
- **Page:** https://libtmux.org/en/tmux/latest/reference/c-define-tty-c-tty_block_stop/

```c
#define TTY_BLOCK_STOP(tty) (1 + ((tty)->sx * (tty)->sy) / 8)
```

## Referenced by

- [`tty_timer_callback`](/en/tmux/latest/reference/c-function-tty-c-tty_timer_callback/) (function)

## Referenced declarations

- [`tty`](/en/tmux/latest/reference/c-struct-tty/) (struct)