---
title: mouseEnter
card_id: 20340
---

# mouseEnter

```
mouseEnter
```

Handler:

```
on mouseEnter
  [ph:statements]
end mouseEnter
```

HyperCard sends the `mouseEnter` message to a button or field just after the pointer moves within its rectangle.

## Related Topics

* [Where messages are sent initially](/HyperTalkReference/systemmessages/Where-messages-are-sent-initially)