# KEYC_BUILD_MODIFIERS

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h#L142
- **Page:** https://libtmux.org/en/tmux/3.7c/reference/c-define-tmux-h-keyc_build_modifiers/

```c
#define KEYC_BUILD_MODIFIERS 0x10000000000000ULL
```

## Referenced by

- [`input_key_build`](/en/tmux/3.7c/reference/c-function-input_key_build/) (function)
- [`key_string_lookup_key`](/en/tmux/3.7c/reference/c-function-key_string_lookup_key/) (function)