8.11 DUIM-Gadgets Module

<check-box>

Open abstract instantiable class

Summary

The class of check boxes, or groups of check buttons.

Superclasses

<button-box> <action-gadget>

Init-keywords

None.

Library

duim-gadgets

Module

duim-gadgets

Description

The instantiable class that implements an abstract check box, that is, a gadget that constrains a number of toggle buttons, zero or more of which may be selected at any one time.

Figure 8.13 A check box

The value of a check box is a sequence of all the currently selected items in the check box.

Operations

None.

Examples

contain(make(<check-box>, items: #(1, 2, 3, 4, 5)));

contain(make(<check-box>, items: range(from: 1, to: 9),
             columns: 3));

contain(make(<check-box>, items: #(1, 2, 3, 4), 
             layout-class: <table-layout>
             rows: 2));