# tty_keys_extended_key

- **Language:** C
- **Kind:** function
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tty-keys.c#L866
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-function-tty-keys-c-tty_keys_extended_key/

```c
static int tty_keys_extended_key(struct tty *, const char *, size_t, size_t *, key_code *)
```

## Parameters

- `tty` (`struct tty *`)
- `buf` (`const char *`)
- `len` (`size_t`)
- `size` (`size_t *`)
- `key` (`key_code *`)

## Called by

- [`tty_keys_next`](/en/tmux/3.2a/reference/c-function-tty_keys_next/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tty-keys.c#L717)

## Calls

- [`log_debug`](/en/tmux/3.2a/reference/c-function-log_debug/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tty-keys.c#L981)
- [`log_get_level`](/en/tmux/3.2a/reference/c-function-log_get_level/) (function) [Call site](https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tty-keys.c#L980)

## Other function references

- [`key_string_lookup_key`](/en/tmux/3.2a/reference/c-function-key_string_lookup_key/) (function)

## Referenced declarations

- [`tty.client`](/en/tmux/3.2a/reference/c-struct-tty-client/) (attribute)
- [`key_code`](/en/tmux/3.2a/reference/c-typedef-key_code/) (typealias)
- [`KEYC_BSPACE`](/en/tmux/3.2a/reference/c-enum-tmux-h-241271275060253221275056143052225065321046366375-keyc_bspace/) (constant)
- [`KEYC_CTRL`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_ctrl/) (constant)
- [`KEYC_IMPLIED_META`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_implied_meta/) (constant)
- [`KEYC_MASK_KEY`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_mask_key/) (constant)
- [`KEYC_MASK_MODIFIERS`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_mask_modifiers/) (constant)
- [`KEYC_META`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_meta/) (constant)
- [`KEYC_NONE`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_none/) (constant)
- [`KEYC_SHIFT`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_shift/) (constant)
- [`client.name`](/en/tmux/3.2a/reference/c-struct-client-name/) (attribute)
- [`tty.tio`](/en/tmux/3.2a/reference/c-struct-tty-tio/) (attribute)
- [`tty`](/en/tmux/3.2a/reference/c-struct-tty/) (struct)