# tty_ctx.data.size

- **Language:** C
- **Kind:** attribute
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h#L1759
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-struct-tty_ctx-[struct]-__unnamed0__-data-size/

```c
size_t size;
```