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.
Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.