Classes which implement this interface provide a method
that deals with the event that is generated when help is
requested for a control, typically when the user presses F1.
<p>
After creating an instance of a class that :
this interface it can be added to a control using the
<code>addHelpListener</code> method and removed using
the <code>removeHelpListener</code> method. When help
is requested for a control, the helpRequested method
will be invoked.
</p>
Classes which implement this interface provide a method that deals with the event that is generated when help is requested for a control, typically when the user presses F1. <p> After creating an instance of a class that : this interface it can be added to a control using the <code>addHelpListener</code> method and removed using the <code>removeHelpListener</code> method. When help is requested for a control, the helpRequested method will be invoked. </p>
@see HelpEvent