| Allegro CL version 10.0 Unrevised from 9.0 to 10.0. 9.0 version | ||||||||||
Arguments:
This function returns the number of lines that a mouse wheel should scroll for each notch that it is rotated, or t if a wheel "roll" of any number of notches should do a page scroll. This is a Windows Control Panel setting that defaults to 3. A custom mouse-wheel method that does scrolling could call this function to help decide how far to scroll.
See also mouse-wheel-present.
Copyright (c) 1998-2015, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 10.0. This page was not revised from the 9.0 page.
Created 2015.5.21.
| Allegro CL version 10.0 Unrevised from 9.0 to 10.0. 9.0 version | ||||||||||