Bug 23936 NPE in ControlExample
swt 20020920 1. Run the ControlExample 2. Go to the CoolBar Tab 3. Check the style SWT.DROP_DOWN 4. Drag the CoolItem so that you get a chevron 5. Click two time over the chevron (is not a double-click) walkback: java.lang.NullPointerException at org.eclipse.swt.examples.controlexample.CoolBarTab$CoolItemSelectionListener.wid getSelected(CoolBarTab.java:416) at org.eclipse.swt.widgets.TypedListener.handleEvent (TypedListener.java:87) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:77) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:833) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:1622) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:1368) at org.eclipse.swt.examples.controlexample.ControlExample.main (ControlExample.java:103) Exception in thread "main" The bug is in the example.
examples/org.eclipse.swt.examples/src/org/eclipse/swt/examples/controlexample/CoolBarTab.java
package org.eclipse.swt.examples.controlexample;
/*
 * Copyright (c) 2000, 2002 IBM Corp.  All rights reserved.
 * This file is made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 */
 
import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.events.*;
class CoolBarTab extends Tab {
	Button dropDownButton, lockedButton;
	
	CoolBar coolBar;
	CoolItem pushItem, dropDownItem, radioItem, checkItem;
	Group coolBarGroup;
	
	Point[] sizes;
	int[] wrapIndices;
	int[] order;
	
	/**
	 * Creates the Tab within a given instance of ControlExample.
	 */
	CoolBarTab(ControlExample instance) {
		super(instance);
	}