| Allegro CL version 6.2 Minimally revised from 6.1 | |||||||||
Arguments: window
Returns two values indicating the width and height of the scrollable page of window. The values exclude the area that is visible within the window (i.e. the visible-box-width and the visible-box-height). So a window that has exactly nothing scrolled out of view would have a scroll-range of zero, zero.
An application may override the default method of this and several
other generic functions in order to implement a custom scrolling
scheme that scrolls by logical picture objects rather than by
pixels. See the source code of the example entitled
'Scrolling by arbitrary objects rather than pixels'
on the Examples tab of the
Navigator
dialog
for a complete
example. More on this point and a list of the relevant generic
functions can be found on the horizontal-scroll-bar and vertical-scroll-bar
pages.
Copyright (c) 1998-2002, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 6.2. This page has had minimal revisions compared to the 6.1 page.
Created 2002.2.26.
| Allegro CL version 6.2 Minimally revised from 6.1 | |||||||||