# KEYC_IS_UNICODE

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tmux.h#L149
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-define-tmux-h-keyc_is_unicode/

```c
#define KEYC_IS_UNICODE(key) (((key) & KEYC_MASK_KEY) > 0x7f && \
 (((key) & KEYC_MASK_KEY) < KEYC_BASE || \
  ((key) & KEYC_MASK_KEY) >= KEYC_BASE_END))
```

## Referenced by

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

## Referenced declarations

- [`KEYC_BASE`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_base/) (constant)
- [`KEYC_BASE_END`](/en/tmux/3.2a/reference/c-enum-tmux-h-241271275060253221275056143052225065321046366375-keyc_base_end/) (constant)
- [`KEYC_MASK_KEY`](/en/tmux/3.2a/reference/c-define-tmux-h-keyc_mask_key/) (constant)