confused about OnMouseOver

Unity Engine
1

The scripting guide states that OnMouseOver is called “every frame while the mouse is over the GUIElement”.

Isn’t GUI.Box a GUIElement? If so, then why wouldn’t the following work?

Thanks!

function OnGUI ()
{
	GUI.Box(Rect(10,10,300,300),"I'm a box");
}

function OnMouseOver ()
{
	Debug.Log("I'm over the box.");
}
2

No, it’s part of OnGUI. GUIElements are GUIText and GUITexture.

–Eric