Examples of org.eclipse.swt.widgets.Widget.addListener()

org.eclipse.swt.widgets.Widget.addListener()

Adds the listener to the collection of listeners who will be notified when an event of the given type occurs. When the event does occur in the widget, the listener is notified by sending it the handleEvent() message. The event type is one of the event constants defined in class SWT. @param eventType the type of event to listen for @param listener the listener which should be notified when the event occurs @exception IllegalArgumentException

ERROR_NULL_ARGUMENT - if the listener is null

@exception SWTException

ERROR_WIDGET_DISPOSED - if the receiver has been disposed
ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver

@see Listener @see SWT @see #getListeners(int) @see #removeListener(int,Listener) @see #notifyListeners

        /*
         * If the event is still up for grabs, then re-route through the global
         * key filter.
         */
        if (event.doit) {
            widget.addListener(SWT.Modify, new CancelOnModifyListener(
                    chainedListener));
            widget.addListener(SWT.KeyDown, chainedListener);
        }
    }
}

         * key filter.
         */
        if (event.doit) {
            widget.addListener(SWT.Modify, new CancelOnModifyListener(
                    chainedListener));
            widget.addListener(SWT.KeyDown, chainedListener);
        }
    }
}

          }
        }


      } else {
        if (!outOfOrderListener.isActive(event.time)) {
          widget.addListener(SWT.KeyDown, outOfOrderListener);
          outOfOrderListener.setActive(event.time);
        }


      }

        else if (column instanceof TreeViewerColumn)
            widget = ((TreeViewerColumn) column).getColumn();
        else
            throw new UnsupportedOperationException();


        widget.addListener(SWT.Selection, new Listener()
        {


            @Override
            public void handleEvent(Event event)
            {

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