# MOUSE_WHEEL

- **Language:** C
- **Kind:** constant
- **Source:** https://github.com/tmux/tmux/blob/3b929f332aafa7f1080eacc31feb11ffbb1d1841/tmux.h#L1232
- **Page:** https://libtmux.org/en/tmux/3.2a/reference/c-define-tmux-h-mouse_wheel/

```c
#define MOUSE_WHEEL(b) ((b) & MOUSE_MASK_WHEEL)
```

## Referenced by

- [`menu_key_cb`](/en/tmux/3.2a/reference/c-function-menu-c-menu_key_cb/) (function)
- [`server_client_check_mouse`](/en/tmux/3.2a/reference/c-function-server-client-c-server_client_check_mouse/) (function)
- [`window_copy_command`](/en/tmux/3.2a/reference/c-function-window-copy-c-window_copy_command/) (function)

## Referenced declarations

- [`MOUSE_MASK_WHEEL`](/en/tmux/3.2a/reference/c-define-tmux-h-mouse_mask_wheel/) (constant)