<change id="disabled-action-beep">

        <api name="util"/>

        <summary>Platform dependent sound when invoking a disabled action.</summary>

        <version major="8" minor="39"/>

        <date year="2014" month="7" day="4"/>

        <author login="saubrecht"/>

        <compatibility addition="yes" binary="compatible" source="compatible"/>

        <description>

            <p>

                Only some platforms provide an audible notification when user 

                tries to invoke a disabled action. So instead of Toolkit.beep() 

                which always plays a sound a new method 

                <code>Utilities.disabledActionSound()<code> shoud be used instead.

            </p>

        </description>

        <class package="org.openide.util" name="Utilities"/>

        <issue number="203979"/>

    </change>

    /**

     * On some platform this method makes a short audible beep, use it when user 

     * tries to invoke an action that's disabled.

     * Some platforms, e.g. MS Windows do not emit any sound in such cases.

     * @since 8.39

     */

    public static void disabledActionBeep() {

        if( isWindows() ) {

            //no sound on MS Windows

            return;

        }

        Toolkit.getDefaultToolkit().beep();

    }