TrayItem.addSelectionListener

Adds the listener to the collection of listeners who will be notified when the receiver is selected by the user, by sending it one of the messages defined in the <code>SelectionListener</code> interface. <p> <code>widgetSelected</code> is called when the receiver is selected <code>widgetDefaultSelected</code> is called when the receiver is double-clicked </p>

@param listener the listener which should be notified when the receiver is selected by the user

@exception IllegalArgumentException <ul> <li>ERROR_NULL_ARGUMENT - if the listener is null</li> </ul> @exception SWTException <ul> <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li> <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li> </ul>

@see SelectionListener @see #removeSelectionListener @see SelectionEvent