Returns the current scroll position of a pane such as
A pane with built-in scrolling.
A keyword, either
returns the scroll position of the pane
in the given
should be an instance of a pane class that has built-in scrolling. That is, the scrolling is implemented by the underlying widget. Examples include list-panel, display-pane and tree-view.
In general, the units in the returned value
are unspecified, but they can be passed to the generic function scroll with
to restore the position.
For a list-panel, the vertical units are items.
LispWorks CAPI Reference Manual - 25 Jul 2006