# KEYC_MASK_FLAGS

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/e476c1230b958df0cb12977517d24b3dc931375b/tmux.h#L149
- **Page:** https://libtmux.org/en/tmux/latest/reference/c-define-tmux-h-keyc_mask_flags/

```c
#define KEYC_MASK_FLAGS 0xff000000000000ULL
```

## Referenced by

- [`cmd_send_keys_inject_key`](/en/tmux/latest/reference/c-function-cmd-send-keys-c-cmd_send_keys_inject_key/) (function)
- [`input_key`](/en/tmux/latest/reference/c-function-input_key/) (function)
- [`key_bindings_add`](/en/tmux/latest/reference/c-function-key_bindings_add/) (function)
- [`key_bindings_remove`](/en/tmux/latest/reference/c-function-key_bindings_remove/) (function)
- [`key_bindings_reset`](/en/tmux/latest/reference/c-function-key_bindings_reset/) (function)
- [`key_string_lookup_key`](/en/tmux/latest/reference/c-function-key_string_lookup_key/) (function)
- [`menu_key_cb`](/en/tmux/latest/reference/c-function-menu_key_cb/) (function)
- [`status_prompt_key`](/en/tmux/latest/reference/c-function-status_prompt_key/) (function)
- [`window_pane_key`](/en/tmux/latest/reference/c-function-window_pane_key/) (function)