| Allegro CL version 6.2 Unrevised from 6.1 | |||||||||
Arguments: button-widget
Sets the value of a boolean widget to t if
its current value is nil, and otherwise sets
its value to nil. The boolean widgets (ones
that have only two logically distinct values) include button, default-button,
cancel-button,
picture-button, check-box, and radio-button.
This function emulates clicking on a boolean widget, and is handy for triggering the on-change function of a simple button widget. (Note that while a simple button widget has only a single visible state, it still holds a boolean value that causes the on-change function to run when it is changed.)
Copyright (c) 1998-2002, Franz Inc. Oakland, CA., USA. All rights reserved.
Documentation for Allegro CL version 6.2. This page was not revised from the 6.1 page.
Created 2002.2.26.
| Allegro CL version 6.2 Unrevised from 6.1 | |||||||||