title: Mouse Emulation Behaviors

sidebar_label: Mouse Emulation

Mouse emulation behaviors send mouse movements, button presses or wheel actions.

Please view [`dt-bindings/zmk/mouse.h`](https://github.com/zmkfirmware/zmk/blob/main/app/include/dt-bindings/zmk/mouse.h) for a comprehensive list of signals.

To make it easier to encode the HID keycode numeric values, most keymaps include

the [`dt-bindings/zmk/mouse.h`](https://github.com/zmkfirmware/zmk/blob/main/app/include/dt-bindings/zmk/mouse.h) header

provided by ZMK near the top:

Doing so allows using a set of defines such as `MOVE_UP`, `MOVE_DOWN`, `LCLK` and `WHEEL_UP` with these behaviors.

This behavior can press/release up to 16 mouse buttons.

- Reference: `&mkp`

- Parameter: A `uint16` with each bit referring to a button.

Example:

This behavior is used to manipulate the cursor.

- Reference: `&mmv`

- Parameter: A `uint32` with the first 16 bits relating to horizontal movement

and the last 16 - to vertical movement.

Example:

This behaviour is used to scroll, both horizontally and vertically.

- Reference: `&mwh`

- Parameter: A `uint16` with the first 8 bits relating to horizontal movement

and the last 8 - to vertical movement.

Example: