# MouseDown

The `MouseDown` event is sent to a widget when a mouse button is pressed.

- [x] Bubbles
- [x] Verbose

## Attributes

| attribute  | type | purpose                                   |
| ---------- | ---- | ----------------------------------------- |
| `x`        | int  | Mouse x coordinate, relative to Widget    |
| `y`        | int  | Mouse y coordinate, relative to Widget    |
| `delta_x`  | int  | Change in x since last mouse event        |
| `delta_y`  | int  | Change in y since last mouse event        |
| `button`   | int  | Index of mouse button                     |
| `shift`    | bool | Shift key pressed if True                 |
| `meta`     | bool | Meta key pressed if True                  |
| `ctrl`     | bool | Ctrl key pressed if True                  |
| `screen_x` | int  | Mouse x coordinate relative to the screen |
| `screen_y` | int  | Mouse y coordinate relative to the screen |

## Code

::: textual.events.MouseDown