| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
Arguments: nil
This function may be used to determine whether the user is trying to initiate a drag, rather than performing a simple click. An application may want to initiate a drag-and-drop in a mouse-left-down method only if this function returns true, for example.
wait-for-drag waits until
either the left mouse button is up or until the mouse moves at
least *start-drag-slack*
pixels from
where it was when wait-for-drag was called, and then returns. If
the left mouse button was pressed when wait-for-drag was called and continues to be
pressed until the mouse moves at least *start-drag-slack* pixels, then
true is returned; otherwise nil
is returned.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |