[mcclim-devel] Update object of a presentation.

[Knut Olav Bøhmer]

Hi,

Let's say I have an object, that is presented with (present ...) on a pane.
It is then drawn on the pane with (define-presentation-method present
(...) (draw-arrow (start-of object) (end-of object) ...))

The arrow is used to represent the speed and direction of some
external object (like the wind)

Then the wind speed and direction changes, so the object is updated.
Now I need to update the presentation to reflect the changes in the object.

How can I update just that object?

-- 
Knut Olav Bøhmer