/*******************************************************************************
 * Copyright (c) 2002, 2012 Innoopract Informationssysteme GmbH.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Innoopract Informationssysteme GmbH - initial API and implementation
 *    EclipseSource - ongoing development
 ******************************************************************************/
package org.eclipse.swt;


import org.eclipse.rwt.internal.RWTMessages;
import org.eclipse.swt.graphics.Cursor;


/**
 * This class provides access to a small number of SWT system-wide
 * methods, and in addition defines the public constants provided
 * by SWT.
 * <p>
 * By defining constants like UP and DOWN in a single class, SWT
 * can share common names and concepts at the same time minimizing
 * the number of classes, names and constants for the application
 * programmer.
 * </p><p>
 * Note that some of the constants provided by this class represent
 * optional, appearance related aspects of widgets which are available
 * either only on some window systems, or for a differing set of
 * widgets on each window system. These constants are marked
 * as <em>HINT</em>s. The set of widgets which support a particular
 * <em>HINT</em> may change from release to release, although we typically
 * will not withdraw support for a <em>HINT</em> once it is made available.
 * </p>
 *
 * @since 1.0
 */
public class SWT {

  /**
   * The null event type (value is 0).
   */
  public static final int None = 0;

  /**
   * The key down event type (value is 1).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * <!-- @see org.eclipse.swt.widgets.Display#addFilter -->
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Control#addKeyListener
   * <!-- @see org.eclipse.swt.widgets.Tracker#addKeyListener -->
   * @see org.eclipse.swt.events.KeyListener#keyPressed
   * @see org.eclipse.swt.events.KeyEvent
   *
   * @since 1.2
   */
  public static final int KeyDown = 1;

  /**
   * The key up event type (value is 2).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Control#addKeyListener
   * @see org.eclipse.swt.events.KeyListener#keyReleased
   * @see org.eclipse.swt.events.KeyEvent
   *
   * @since 1.2
   */
//  * @see org.eclipse.swt.widgets.Tracker#addKeyListener
  public static final int KeyUp = 2;

  /**
   * The mouse down event type (value is 3).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Control#addMouseListener
   * @see org.eclipse.swt.events.MouseListener#mouseDown
   * @see org.eclipse.swt.events.MouseEvent
   *
   * @since 1.1
   */
  public static final int MouseDown = 3;

  /**
   * The mouse up event type (value is 4).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Control#addMouseListener
   * @see org.eclipse.swt.events.MouseListener#mouseUp
   * @see org.eclipse.swt.events.MouseEvent
   *
   * @since 1.1
   */
  public static final int MouseUp = 4;

  /**
   * The mouse double click event type (value is 8).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Control#addMouseListener
   * @see org.eclipse.swt.events.MouseListener#mouseDoubleClick
   * @see org.eclipse.swt.events.MouseEvent
   *
   * @since 1.1
   */
  public static final int MouseDoubleClick = 8;

  /**
   * The move event type (value is 10).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Control#addControlListener
   * @see org.eclipse.swt.widgets.TableColumn#addControlListener
   * <!-- @see org.eclipse.swt.widgets.Tracker#addControlListener -->
   * @see org.eclipse.swt.widgets.TreeColumn#addControlListener
   * @see org.eclipse.swt.events.ControlListener#controlMoved
   * @see org.eclipse.swt.events.ControlEvent
   */
  public static final int Move = 10;

  /**
   * The resize event type (value is 11).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Control#addControlListener
   * @see org.eclipse.swt.widgets.TableColumn#addControlListener
   * <!-- @see org.eclipse.swt.widgets.Tracker#addControlListener -->
   * @see org.eclipse.swt.widgets.TreeColumn#addControlListener
   * @see org.eclipse.swt.events.ControlListener#controlResized
   * @see org.eclipse.swt.events.ControlEvent
   */
  public static final int Resize = 11;

  /**
   * The dispose event type (value is 12).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * <!--@see org.eclipse.swt.widgets.Display#addListener-->
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Widget#addDisposeListener
   * @see org.eclipse.swt.events.DisposeListener#widgetDisposed
   * @see org.eclipse.swt.events.DisposeEvent
   */
  public static final int Dispose = 12;

  /**
   * The selection event type (value is 13).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Button#addSelectionListener
   * @see org.eclipse.swt.widgets.Combo#addSelectionListener
   * @see org.eclipse.swt.widgets.CoolItem#addSelectionListener
   * @see org.eclipse.swt.widgets.Link#addSelectionListener
   * @see org.eclipse.swt.widgets.List#addSelectionListener
   * @see org.eclipse.swt.widgets.MenuItem#addSelectionListener
   * @see org.eclipse.swt.widgets.Sash#addSelectionListener
   * <!-- @see org.eclipse.swt.widgets.Scale#addSelectionListener -->
   * @see org.eclipse.swt.widgets.ScrollBar#addSelectionListener
   * <!-- @see org.eclipse.swt.widgets.Slider#addSelectionListener -->
   * @see org.eclipse.swt.widgets.TabFolder#addSelectionListener
   * @see org.eclipse.swt.widgets.Table#addSelectionListener
   * @see org.eclipse.swt.widgets.TableColumn#addSelectionListener
   * @see org.eclipse.swt.widgets.ToolItem#addSelectionListener
   * <!-- @see org.eclipse.swt.widgets.TrayItem#addSelectionListener -->
   * @see org.eclipse.swt.widgets.Tree#addSelectionListener
   * @see org.eclipse.swt.widgets.TreeColumn#addSelectionListener
   * @see org.eclipse.swt.events.SelectionListener#widgetSelected
   * @see org.eclipse.swt.events.SelectionEvent
   */
  public static final int Selection = 13;

  /**
   * The default selection event type (value is 14).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Combo#addSelectionListener
   * @see org.eclipse.swt.widgets.List#addSelectionListener
   * <!-- @see org.eclipse.swt.widgets.Spinner#addSelectionListener -->
   * @see org.eclipse.swt.widgets.Table#addSelectionListener
   * @see org.eclipse.swt.widgets.Text#addSelectionListener
   * <!-- @see org.eclipse.swt.widgets.TrayItem#addSelectionListener -->
   * @see org.eclipse.swt.widgets.Tree#addSelectionListener
   * @see org.eclipse.swt.events.SelectionListener#widgetDefaultSelected
   * @see org.eclipse.swt.events.SelectionEvent
   */
  public static final int DefaultSelection = 14;

  /**
   * The focus in event type (value is 15).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Control#addFocusListener
   * @see org.eclipse.swt.events.FocusListener#focusGained
   * @see org.eclipse.swt.events.FocusEvent
   */
  public static final int FocusIn = 15;

  /**
   * The focus out event type (value is 16).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Control#addFocusListener
   * @see org.eclipse.swt.events.FocusListener#focusLost
   * @see org.eclipse.swt.events.FocusEvent
   */
  public static final int FocusOut = 16;

  /**
   * The expand event type (value is 17).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Tree#addTreeListener
   * @see org.eclipse.swt.events.TreeListener#treeExpanded
   * @see org.eclipse.swt.events.TreeEvent
   */
  public static final int Expand = 17;

  /**
   * The collapse event type (value is 18).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Tree#addTreeListener
   * @see org.eclipse.swt.events.TreeListener#treeCollapsed
   * @see org.eclipse.swt.events.TreeEvent
   */
  public static final int Collapse = 18;

  /**
   * The close event type (value is 21).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * <!-- @see org.eclipse.swt.widgets.Display#addListener -->
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Shell#addShellListener
   * @see org.eclipse.swt.events.ShellListener#shellClosed
   * @see org.eclipse.swt.events.ShellEvent
   */
  public static final int Close = 21;

  /**
   * The show event type (value is 22).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Menu#addMenuListener
   * @see org.eclipse.swt.events.MenuListener#menuShown
   * @see org.eclipse.swt.events.MenuEvent
   */
  public static final int Show = 22;

  /**
   * The hide event type (value is 23).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Menu#addMenuListener
   * @see org.eclipse.swt.events.MenuListener#menuHidden
   * @see org.eclipse.swt.events.MenuEvent
   */
  public static final int Hide = 23;

  /**
   * The modify event type (value is 24).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Combo#addModifyListener
   * @see org.eclipse.swt.widgets.Spinner#addModifyListener
   * @see org.eclipse.swt.widgets.Text#addModifyListener
   * @see org.eclipse.swt.events.ModifyListener#modifyText
   * @see org.eclipse.swt.events.ModifyEvent
   */
  public static final int Modify = 24;

  /**
   * The verify event type (value is 25).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Combo#addVerifyListener
   * @see org.eclipse.swt.widgets.Text#addVerifyListener
   * @see org.eclipse.swt.events.VerifyListener#verifyText
   * @see org.eclipse.swt.events.VerifyEvent
   */
  public static final int Verify = 25;

  /**
   * The activate event type (value is 26).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Shell#addShellListener
   * @see org.eclipse.swt.events.ShellListener#shellActivated
   * @see org.eclipse.swt.events.ShellEvent
   */
  public static final int Activate = 26;

  /**
   * The deactivate event type (value is 27).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Shell#addShellListener
   * @see org.eclipse.swt.events.ShellListener#shellDeactivated
   * @see org.eclipse.swt.events.ShellEvent
   */
  public static final int Deactivate = 27;

  /**
   * The help event type (value is 28).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Control#addHelpListener
   * @see org.eclipse.swt.widgets.Menu#addHelpListener
   * @see org.eclipse.swt.widgets.MenuItem#addHelpListener
   * @see org.eclipse.swt.events.HelpListener#helpRequested
   * @see org.eclipse.swt.events.HelpEvent
   *
   * @since 1.3
   */
  public static final int Help = 28;

  /**
   * The drag detect event type (value is 29).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.dnd.DragSource
   *
   * @since 1.3
   */
  public static final int DragDetect = 29;

  /**
   * The arm event type (value is 30).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.MenuItem#addArmListener
   * @see org.eclipse.swt.events.ArmListener#widgetArmed
   * @see org.eclipse.swt.events.ArmEvent
   */
  public static final int Arm = 30;

  /**
   * The traverse event type (value is 31).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Control#addTraverseListener
   * @see org.eclipse.swt.events.TraverseListener#keyTraversed
   * @see org.eclipse.swt.events.TraverseEvent
   *
   * @since 1.2
   */
  public static final int Traverse = 31;

  /**
   * The menu detect event type (value is 35).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   *
   * @since 1.3
   */
  public static final int MenuDetect = 35;

  /**
   * The set data event type (value is 36).
   *
   * @see org.eclipse.swt.widgets.Widget#addListener
   * @see org.eclipse.swt.widgets.Event
   *
   * @see org.eclipse.swt.widgets.Table
   * @see org.eclipse.swt.widgets.Tree
   */
  public static final int SetData = 36;

  /**
   * The settings changed event type (value is 39).
   * <p>
   * The settings changed event is sent when an operating system
   * property, such as a system font or color, has been changed.
   * The event occurs after the property has been changed, but
   * before any widget is redrawn.  Applications that cache operating
   * system properties can use this event to update their caches.
   * A specific property change can be detected by querying the
   * new value of a property and comparing it with the equivalent
   * cached value.  The operating system automatically redraws and
   * lays out all widgets after this event is sent.
   * </p>
   *
   * @see org.eclipse.swt.widgets.Display#addListener
   * @see org.eclipse.swt.widgets.Event
   *
   * @since 1.4
   */
  public static final int Settings = 39;

  /**
   * The skin event type (value is 45).
   *
   * <p>
   * The skin event is sent by the display when a widget needs to
   * be skinned.
   * </p>
   *
   * @see org.eclipse.swt.widgets.Display#addListener
   * @see org.eclipse.swt.widgets.Display#addFilter
   * @see org.eclipse.swt.widgets.Event
   * @see org.eclipse.swt.widgets.Widget#reskin(int)
   *
   * @since 1.3
   */
  public static final int Skin = 45;

  /**
   * Indicates that a user-interface component is being dragged,
   * for example dragging the thumb of a scroll bar (value is 1).
   *
   * @since 1.3
   */
  public static final int DRAG = 1;


  /**
   * Event detail field that indicates a user-interface component
   * state is selected (value is 1&lt;&lt;1).
   *
   * @since 1.3
   */
  public static final int SELECTED = 1 << 1;

  /**
   * Event detail field that indicates a user-interface component
   * state is focused (value is 1&lt;&lt;2).
   *
   * @since 1.3
   */
  public static final int FOCUSED = 1 << 2;

  /**
   * Event detail field that indicates a user-interface component
   * draws the background (value is 1&lt;&lt;3).
   */
  public static final int BACKGROUND = 1 << 3;

  /**
   * Event detail field that indicates a user-interface component
   * draws the foreground (value is 1&lt;&lt;4).
   *
   * @since 1.2
   */
  public static final int FOREGROUND = 1 << 4;

  /**
   * Event detail field that indicates a user-interface component
   * state is hot (value is 1&lt;&lt;5).
   *
   * @since 1.3
   */
  public static final int HOT = 1 << 5;

  /**
   * Traversal event detail field value indicating that no
   * traversal action should be taken
   * (value is 0).
   *
   * @since 1.2
   */
  public static final int TRAVERSE_NONE = 0;

  /**
   * Traversal event detail field value indicating that the
   * key which designates that a dialog should be cancelled was
   * pressed; typically, this is the ESC key
   * (value is 1&lt;&lt;1).
   *
   * @since 1.2
   */
  public static final int TRAVERSE_ESCAPE = 1 << 1;

  /**
   * Traversal event detail field value indicating that the
   * key which activates the default button in a dialog was
   * pressed; typically, this is the ENTER key
   * (value is 1&lt;&lt;2).
   *
   * @since 1.2
   */
  public static final int TRAVERSE_RETURN = 1 << 2;

  /**
   * Traversal event detail field value indicating that the
   * key which designates that focus should be given to the
   * previous tab group was pressed; typically, this is the
   * SHIFT-TAB key sequence
   * (value is 1&lt;&lt;3).
   *
   * @since 1.2
   */
  public static final int TRAVERSE_TAB_PREVIOUS = 1 << 3;

  /**
   * Traversal event detail field value indicating that the
   * key which designates that focus should be given to the
   * next tab group was pressed; typically, this is the
   * TAB key
   * (value is 1&lt;&lt;4).
   *
   * @since 1.2
   */
  public static final int TRAVERSE_TAB_NEXT = 1 << 4;

//  /**
//   * Traversal event detail field value indicating that the
//   * key which designates that focus should be given to the
//   * previous tab item was pressed; typically, this is either
//   * the LEFT-ARROW or UP-ARROW keys
//   * (value is 1&lt;&lt;5).
//   *
//   * @since 1.2
//   */
//  public static final int TRAVERSE_ARROW_PREVIOUS = 1 << 5;
//
//  /**
//   * Traversal event detail field value indicating that the
//   * key which designates that focus should be given to the
//   * previous tab item was pressed; typically, this is either
//   * the RIGHT-ARROW or DOWN-ARROW keys
//   * (value is 1&lt;&lt;6).
//   *
//   * @since 1.2
//   */
//  public static final int TRAVERSE_ARROW_NEXT = 1 << 6;

//  /**
//   * Traversal event detail field value indicating that a
//   * mnemonic key sequence was pressed
//   * (value is 1&lt;&lt;7).
//   *
//   * @since 1.2
//   */
//  public static final int TRAVERSE_MNEMONIC = 1 << 7;

//  /**
//   * Traversal event detail field value indicating that the
//   * key which designates that the previous page of a multi-page
//   * window should be shown was pressed; typically, this
//   * is the CTRL-PAGEUP key sequence
//   * (value is 1&lt;&lt;8).
//   *
//   * @since 1.2
//   */
//  public static final int TRAVERSE_PAGE_PREVIOUS = 1 << 8;
//
//  /**
//   * Traversal event detail field value indicating that the
//   * key which designates that the next page of a multi-page
//   * window should be shown was pressed; typically, this
//   * is the CTRL-PAGEDOWN key sequence
//   * (value is 1&lt;&lt;9).
//   *
//   * @since 1.2
//   */
//  public static final int TRAVERSE_PAGE_NEXT = 1 << 9;

  /**
   * Gesture event detail field value indicating that a continuous
   * gesture is about to begin.
   *
   * @since 1.4
   */
  public static final int GESTURE_BEGIN = 1 << 1;

  /**
   * Gesture event detail field value indicating that a continuous
   * gesture has ended.
   *
   * @since 1.4
   */
  public static final int GESTURE_END = 1 << 2;

  /**
   * Gesture event detail field value indicating that a
   * rotation gesture has happened. Only the rotation field
   * of the event is valid.
   *
   * @since 1.4
   */
  public static final int GESTURE_ROTATE = 1 << 3;

  /**
   * Gesture event detail field value indicating that a
   * swipe gesture has happened.
   *
   * @since 1.4
   */
  public static final int GESTURE_SWIPE = 1 << 4;

  /**
   * Gesture event detail field value indicating that a
   * magnification gesture has happened.
   *
   * @since 1.4
   */
  public static final int GESTURE_MAGNIFY = 1 << 5;

  /**
   * Gesture event detail field value indicating that a
   * panning (two-finger scroll) gesture has happened.
   *
   * @since 1.4
   */
  public static final int GESTURE_PAN = 1 << 6;

  /**
   * A constant indicating that a finger touched the device.
   *
   * @see org.eclipse.swt.widgets.Touch#state
   *
   * @since 1.4
   */
  public static final int TOUCHSTATE_DOWN = 1 << 0;

  /**
   * A constant indicating that a finger moved on the device.
   *
   * @see org.eclipse.swt.widgets.Touch#state
   *
   * @since 1.4
   */
  public static final int TOUCHSTATE_MOVE = 1 << 1;

  /**
   * A constant indicating that a finger was lifted from the device.
   *
   * @see org.eclipse.swt.widgets.Touch#state
   *
   * @since 1.4
   */
  public static final int TOUCHSTATE_UP = 1 << 2;

  /**
   * A constant indicating that a given operation should be performed on
   * all widgets (value is 1&lt;&lt;0).
   *
   * <p><b>Used By:</b><ul>
   * <li><code>Composite</code> layout</li>
   * </ul></p>
   *
   * @see org.eclipse.swt.widgets.Composite#layout(org.eclipse.swt.widgets.Control[], int)
   *
   * @since 1.3
   */
  public static final int ALL = 1 << 0;

  /**
   * A constant indicating that widgets have changed.
   * (value is 1&lt;&lt;1).
   *
   * <p><b>Used By:</b><ul>
   * <li><code>Composite</code> layout</li>
   * </ul></p>
   *
   * @see org.eclipse.swt.widgets.Composite#layout(org.eclipse.swt.widgets.Control[], int)
   *
   * @since 1.3
   */
  public static final int CHANGED = 1 << 1;

  /**
   * A constant indicating that a given operation should be deferred.
   * (value is 1&lt;&lt;2).
   *
   * <p><b>Used By:</b><ul>
   * <li><code>Composite</code> layout</li>
   * </ul></p>
   *
   * @see org.eclipse.swt.widgets.Composite#layout(org.eclipse.swt.widgets.Control[], int)
   *
   * @since 1.3
   */
  public static final int DEFER = 1 << 2;

  /**
   * A constant known to be zero (0), used in operations which
   * take pointers to indicate a null argument.
   */
  public static final int NULL = 0;

  /**
   * A constant known to be zero (0), typically used in operations
   * which take bit flags to indicate that "no bits are set".
   */
  public static final int NONE = 0;

  /**
   * Indicates that a default should be used (value is -1).
   */
  public static final int DEFAULT = -1;

  /**
   * Indicates that a property is off (value is 0).
   *
   * @since 1.3
   */
  public static final int OFF = 0;

  /**
   * Indicates that a property is on (value is 1).
   *
   * @since 1.3
   */
  public static final int ON = 1;

  /**
   * Style constant for align up behavior (value is 1&lt;&lt;7,
   * since align UP and align TOP are considered the same).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code> with <code>ARROW</code> style</li>
   * <!-- <li><code>Tracker</code></li> -->
   * </ul></p>
   */
  public static final int UP = 1 << 7;

  /**
   * Style constant for align top behavior (value is 1&lt;&lt;7,
   * since align UP and align TOP are considered the same).
   * <p><b>Used By:</b><ul>
   * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
   * </ul></p>
   */
  public static final int TOP = UP;

  /**
   * Style constant for align down behavior (value is 1&lt;&lt;10,
   * since align DOWN and align BOTTOM are considered the same).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code> with <code>ARROW</code> style</li>
   * <!-- <li><code>Tracker</code></li> -->
   * </ul></p>
   */
  public static final int DOWN = 1 << 10;

  /**
   * Style constant for align bottom behavior (value is 1&lt;&lt;10,
   * since align DOWN and align BOTTOM are considered the same).
   * <p><b>Used By:</b><ul>
   * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
   * </ul></p>
   */
  public static final int BOTTOM = DOWN;

  /**
   * Style constant for leading alignment (value is 1&lt;&lt;14).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * <li><code>Label</code></li>
   * <!-- <li><code>TableColumn</code></li> -->
   * <!-- <li><code>Tracker</code></li> -->
   * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
   * </ul></p>
   */
  public static final int LEAD = 1 << 14;

  /**
   * Style constant for align left behavior (value is 1&lt;&lt;14).
   * This is a synonym for LEAD (value is 1&lt;&lt;14).  Newer
   * applications should use LEAD instead of LEFT to make code more
   * understandable on right-to-left platforms.
   */
  public static final int LEFT = LEAD;

  /**
   * Style constant for trailing alignment (value is 1&lt;&lt;17).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * <li><code>Label</code></li>
   * <li><code>TableColumn</code></li>
   * <!-- <li><code>Tracker</code></li> -->
   * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
   * </ul></p>
   */
  public static final int TRAIL = 1 << 17;

  /**
   * Style constant for align right behavior (value is 1&lt;&lt;17).
   * This is a synonym for TRAIL (value is 1&lt;&lt;17).  Newer
   * applications should use TRAIL instead of RIGHT to make code more
   * understandable on right-to-left platforms.
   */
  public static final int RIGHT = TRAIL;

  /**
   * Style constant for align center behavior (value is 1&lt;&lt;24).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * <li><code>Label</code></li>
   * <li><code>TableColumn</code></li>
   * <li><code>FormAttachment</code> in a <code>FormLayout</code></li>
   * </ul></p>
   */
  public static final int CENTER = 1 << 24;

  /**
   * Style constant for horizontal alignment or orientation behavior (value is 1&lt;&lt;8).
   * <p><b>Used By:</b><ul>
   * <li><code>Label</code></li>
   * <li><code>ProgressBar</code></li>
   * <li><code>Sash</code></li>
   * <!-- <li><code>Scale</code></li> -->
   * <li><code>ScrollBar</code></li>
   * <!-- <li><code>Slider</code></li> -->
   * <li><code>ToolBar</code></li>
   * <li><code>FillLayout</code> type</li>
   * <li><code>RowLayout</code> type</li>
   * </ul></p>
   */
  public static final int HORIZONTAL = 1 << 8;

  /**
   * Style constant for vertical alignment or orientation behavior (value is 1&lt;&lt;9).
   * <p><b>Used By:</b><ul>
   * <li><code>Label</code></li>
   * <li><code>ProgressBar</code></li>
   * <li><code>Sash</code></li>
   * <!-- <li><code>Scale</code></li> -->
   * <li><code>ScrollBar</code></li>
   * <!-- <li><code>Slider</code></li> -->
   * <li><code>ToolBar</code></li>
   * <li><code>CoolBar</code></li>
   * <li><code>FillLayout</code> type</li>
   * <li><code>RowLayout</code> type</li>
   * </ul></p>
   */
  public static final int VERTICAL = 1 << 9;

  /**
   * Style constant for balloon behavior (value is 1&lt;&lt;12).
   * <p><b>Used By:</b><ul>
   * <li><code>ToolTip</code></li>
   * </ul></p>
   *
   * @since 1.4
   */
  public static final int BALLOON = 1 << 12;

  /**
   * Style constant for vertical alignment or orientation behavior (value is 1).
   * <p><b>Used By:</b><ul>
   * <li><code>GridLayout</code> type</li>
   * </ul></p>
   */
  public static final int BEGINNING = 1;

  /**
   * Style constant for vertical alignment or orientation behavior (value is 4).
   * <p><b>Used By:</b><ul>
   * <li><code>GridLayout</code> type</li>
   * </ul></p>
   */
  public static final int FILL = 4;

  /**
   * ASCII character convenience constant for the delete character
   * (value is the <code>char</code> with value 127).
   *
   * @since 1.2
   */
  public static final char DEL = 0x7F;

  /**
   * ASCII character convenience constant for the escape character
   * (value is the <code>char</code> with value 27).
   *
   * @since 1.1
   */
  public static final char ESC = 0x1B;

  /**
   * ASCII character convenience constant for the backspace character
   * (value is the <code>char</code> '\b').
   *
   * @since 1.1
   */
  public static final char BS = '\b';

  /**
   * ASCII character convenience constant for the carriage return character
   * (value is the <code>char</code> '\r').
   *
   * @since 1.1
   */
  public static final char CR = '\r';

  /**
   * ASCII character convenience constant for the line feed character
   * (value is the <code>char</code> '\n').
   *
   * @since 1.1
   */
  public static final char LF = '\n';

  /**
   * ASCII character convenience constant for the tab character
   * (value is the <code>char</code> '\t').
   *
   * @since 1.1
   */
  public static final char TAB = '\t';

  /**
   * keyboard and/or mouse event mask indicating that the ALT key
   * was pushed on the keyboard when the event was generated
   * (value is 1&lt;&lt;16).
   *
   * @since 1.1
   */
  public static final int ALT = 1 << 16;

  /**
   * Keyboard and/or mouse event mask indicating that the SHIFT key
   * was pushed on the keyboard when the event was generated
   * (value is 1&lt;&lt;17).
   *
   * @since 1.1
   */
  public static final int SHIFT = 1 << 17;

  /**
   * Keyboard and/or mouse event mask indicating that the CTRL key
   * was pushed on the keyboard when the event was generated
   * (value is 1&lt;&lt;18).
   *
   * @since 1.1
   */
  public static final int CTRL = 1 << 18;

  /**
   * Keyboard and/or mouse event mask indicating that the CTRL key
   * was pushed on the keyboard when the event was generated. This
   * is a synonym for CTRL (value is 1&lt;&lt;18).
   *
   * @since 1.1
   */
  public static final int CONTROL = CTRL;

  /**
   * Keyboard and/or mouse event mask indicating that the COMMAND key
   * was pushed on the keyboard when the event was generated
   * (value is 1&lt;&lt;22).
   *
   * @since 1.1
   */
  public static final int COMMAND = 1 << 22;

  /**
   * Keyboard and/or mouse event mask indicating all possible
   * keyboard modifiers.
   *
   * To allow for the future, this mask  is intended to be used in
   * place of code that references  each individual keyboard mask.
   *  For example, the following expression will determine whether
   * any modifier is pressed and will continue to work as new modifier
   * masks are added.
   *
   * <code>(stateMask & SWT.MODIFIER_MASK) != 0</code>.
   *
   * @since 1.2
   */
  public static final int MODIFIER_MASK;

  /**
   * Keyboard and/or mouse event mask indicating that mouse button one
   * was pushed when the event was generated. (value is 1&lt;&lt;19).
   *
   * @since 1.3
   */
  public static final int BUTTON1 = 1 << 19;

  /**
   * Keyboard and/or mouse event mask indicating that mouse button two
   * was pushed when the event was generated. (value is 1&lt;&lt;20).
   *
   * @since 1.3
   */
  public static final int BUTTON2 = 1 << 20;

  /**
   * Keyboard and/or mouse event mask indicating that mouse button three
   * was pushed when the event was generated. (value is 1&lt;&lt;21).
   *
   * @since 1.3
   */
  public static final int BUTTON3 = 1 << 21;

  /**
   * Keyboard and/or mouse event mask indicating that mouse button four
   * was pushed when the event was generated. (value is 1&lt;&lt;23).
   *
   * @since 1.3
   */
  public static final int BUTTON4 = 1 << 23;

  /**
   * Keyboard and/or mouse event mask indicating that mouse button five
   * was pushed when the event was generated. (value is 1&lt;&lt;25).
   *
   * @since 1.3
   */
  public static final int BUTTON5 = 1 << 25;

  /**
   * Keyboard and/or mouse event mask indicating all possible
   * mouse buttons.
   *
   * To allow for the future, this mask  is intended to be used
   * in place of code that references each individual button mask.
   * For example, the following expression will determine whether
   * any button is pressed and will continue to work as new button
   * masks are added.
   *
   * <code>(stateMask & SWT.BUTTON_MASK) != 0</code>.
   *
   * @since 1.3
   */
  public static final int BUTTON_MASK;

  /**
   * Keyboard and/or mouse event mask indicating that the MOD1 key
   * was pushed on the keyboard when the event was generated.
   *
   * This is the primary keyboard modifier for the platform.
   *
   * @since 1.3
   */
  public static final int MOD1;

  /**
   * Keyboard and/or mouse event mask indicating that the MOD2 key
   * was pushed on the keyboard when the event was generated.
   *
   * This is the secondary keyboard modifier for the platform.
   *
   * @since 1.3
   */
  public static final int MOD2;

  /**
   * Keyboard and/or mouse event mask indicating that the MOD3 key
   * was pushed on the keyboard when the event was generated.
   *
   * @since 1.3
   */
  public static final int MOD3;

  /**
   * Keyboard and/or mouse event mask indicating that the MOD4 key
   * was pushed on the keyboard when the event was generated.
   *
   * @since 1.3
   */
  public static final int MOD4;

  /**
   * Accelerator constant used to differentiate a key code from a
   * unicode character.
   *
   * If this bit is set, then the key stroke
   * portion of an accelerator represents a key code.  If this bit
   * is not set, then the key stroke portion of an accelerator is
   * a unicode character.
   *
   * The following expression is false:
   *
   * <code>((SWT.MOD1 | SWT.MOD2 | 'T') & SWT.KEYCODE_BIT) != 0</code>.
   *
   * The following expression is true:
   *
   * <code>((SWT.MOD3 | SWT.F2) & SWT.KEYCODE_BIT) != 0</code>.
   *
   * (value is (1&lt;&lt;24))
   *
   * @since 1.1
   */
  public static final int KEYCODE_BIT = ( 1 << 24 );

  /**
   * Accelerator constant used to extract the key stroke portion of
   * an accelerator.
   *
   * The key stroke may be a key code or a unicode
   * value.  If the key stroke is a key code <code>KEYCODE_BIT</code>
   * will be set.
   *
   * @since 1.2
   */
  public static final int KEY_MASK = KEYCODE_BIT + 0xFFFF;

  /**
   * Keyboard event constant representing the UP ARROW key
   * (value is (1&lt;&lt;24)+1).
   *
   * @since 1.2
   */
  public static final int ARROW_UP = KEYCODE_BIT + 1;

  /**
   * Keyboard event constant representing the DOWN ARROW key
   * (value is (1&lt;&lt;24)+2).
   *
   * @since 1.2
   */
  public static final int ARROW_DOWN = KEYCODE_BIT + 2;

  /**
   * Keyboard event constant representing the LEFT ARROW key
   * (value is (1&lt;&lt;24)+3).
   *
   * @since 1.2
   */
  public static final int ARROW_LEFT = KEYCODE_BIT + 3;

  /**
   * Keyboard event constant representing the RIGHT ARROW key
   * (value is (1&lt;&lt;24)+4).
   *
   * @since 1.2
   */
  public static final int ARROW_RIGHT = KEYCODE_BIT + 4;

  /**
   * Keyboard event constant representing the PAGE UP key
   * (value is (1&lt;&lt;24)+5).
   *
   * @since 1.2
   */
  public static final int PAGE_UP = KEYCODE_BIT + 5;

  /**
   * Keyboard event constant representing the PAGE DOWN key
   * (value is (1&lt;&lt;24)+6).
   *
   * @since 1.2
   */
  public static final int PAGE_DOWN = KEYCODE_BIT + 6;

  /**
   * Keyboard event constant representing the HOME key
   * (value is (1&lt;&lt;24)+7).
   *
   * @since 1.2
   */
  public static final int HOME = KEYCODE_BIT + 7;

  /**
   * Keyboard event constant representing the END key
   * (value is (1&lt;&lt;24)+8).
   *
   * @since 1.1
   */
  public static final int END = KEYCODE_BIT + 8;

  /**
   * Keyboard event constant representing the INSERT key
   * (value is (1&lt;&lt;24)+9).
   *
   * @since 1.2
   */
  public static final int INSERT = KEYCODE_BIT + 9;

  /**
   * Keyboard event constant representing the F1 key
   * (value is (1&lt;&lt;24)+10).
   *
   * @since 1.2
   */
  public static final int F1 = KEYCODE_BIT + 10;

  /**
   * Keyboard event constant representing the F2 key
   * (value is (1&lt;&lt;24)+11).
   *
   * @since 1.2
   */
  public static final int F2 = KEYCODE_BIT + 11;

  /**
   * Keyboard event constant representing the F3 key
   * (value is (1&lt;&lt;24)+12).
   *
   * @since 1.2
   */
  public static final int F3 = KEYCODE_BIT + 12;

  /**
   * Keyboard event constant representing the F4 key
   * (value is (1&lt;&lt;24)+13).
   *
   * @since 1.2
   */
  public static final int F4 = KEYCODE_BIT + 13;

  /**
   * Keyboard event constant representing the F5 key
   * (value is (1&lt;&lt;24)+14).
   *
   * @since 1.2
   */
  public static final int F5 = KEYCODE_BIT + 14;

  /**
   * Keyboard event constant representing the F6 key
   * (value is (1&lt;&lt;24)+15).
   *
   * @since 1.2
   */
  public static final int F6 = KEYCODE_BIT + 15;

  /**
   * Keyboard event constant representing the F7 key
   * (value is (1&lt;&lt;24)+16).
   *
   * @since 1.2
   */
  public static final int F7 = KEYCODE_BIT + 16;

  /**
   * Keyboard event constant representing the F8 key
   * (value is (1&lt;&lt;24)+17).
   *
   * @since 1.2
   */
  public static final int F8 = KEYCODE_BIT + 17;

  /**
   * Keyboard event constant representing the F9 key
   * (value is (1&lt;&lt;24)+18).
   *
   * @since 1.2
   */
  public static final int F9 = KEYCODE_BIT + 18;

  /**
   * Keyboard event constant representing the F10 key
   * (value is (1&lt;&lt;24)+19).
   *
   * @since 1.2
   */
  public static final int F10 = KEYCODE_BIT + 19;

  /**
   * Keyboard event constant representing the F11 key
   * (value is (1&lt;&lt;24)+20).
   *
   * @since 1.2
   */
  public static final int F11 = KEYCODE_BIT + 20;

  /**
   * Keyboard event constant representing the F12 key
   * (value is (1&lt;&lt;24)+21).
   *
   * @since 1.2
   */
  public static final int F12 = KEYCODE_BIT + 21;

  /**
   * Keyboard event constant representing the F13 key
   * (value is (1&lt;&lt;24)+22).
   *
   * @since 1.3
   */
  public static final int F13 = KEYCODE_BIT + 22;

  /**
   * Keyboard event constant representing the F14 key
   * (value is (1&lt;&lt;24)+23).
   *
   * @since 1.3
   */
  public static final int F14 = KEYCODE_BIT + 23;

  /**
   * Keyboard event constant representing the F15 key
   * (value is (1&lt;&lt;24)+24).
   *
   * @since 1.3
   */
  public static final int F15 = KEYCODE_BIT + 24;

  /**
   * Keyboard event constant representing the F16 key
   * (value is (1&lt;&lt;25)+25).
   *
   * @since 1.3
   */
  public static final int F16 = KEYCODE_BIT + 25;

  /**
   * Keyboard event constant representing the F17 key
   * (value is (1&lt;&lt;26)+26).
   *
   * @since 1.3
   */
  public static final int F17 = KEYCODE_BIT + 26;

  /**
   * Keyboard event constant representing the F18 key
   * (value is (1&lt;&lt;27)+27).
   *
   * @since 1.3
   */
  public static final int F18 = KEYCODE_BIT + 27;

  /**
   * Keyboard event constant representing the F19 key
   * (value is (1&lt;&lt;28)+28).
   *
   * @since 1.3
   */
  public static final int F19 = KEYCODE_BIT + 28;

  /**
   * Keyboard event constant representing the F20 key
   * (value is (1&lt;&lt;29)+29).
   *
   * @since 1.3
   */
  public static final int F20 = KEYCODE_BIT + 29;

  /**
   * Keyboard event constant representing the numeric key
   * pad multiply key (value is (1&lt;&lt;24)+42).
   *
   * @since 1.2
   */
  public static final int KEYPAD_MULTIPLY = KEYCODE_BIT + 42;

  /**
   * Keyboard event constant representing the numeric key
   * pad add key (value is (1&lt;&lt;24)+43).
   *
   * @since 1.2
   */
  public static final int KEYPAD_ADD = KEYCODE_BIT + 43;

  /**
   * Keyboard event constant representing the numeric key
   * pad subtract key (value is (1&lt;&lt;24)+45).
   *
   * @since 1.2
   */
  public static final int KEYPAD_SUBTRACT = KEYCODE_BIT + 45;

  /**
   * Keyboard event constant representing the numeric key
   * pad decimal key (value is (1&lt;&lt;24)+46).
   *
   * @since 1.2
   */
  public static final int KEYPAD_DECIMAL = KEYCODE_BIT + 46;

  /**
   * Keyboard event constant representing the numeric key
   * pad divide key (value is (1&lt;&lt;24)+47).
   *
   * @since 1.2
   */
  public static final int KEYPAD_DIVIDE = KEYCODE_BIT + 47;

  /**
   * Keyboard event constant representing the numeric key
   * pad zero key (value is (1&lt;&lt;24)+48).
   *
   * @since 1.2
   */
  public static final int KEYPAD_0 = KEYCODE_BIT + 48;

  /**
   * Keyboard event constant representing the numeric key
   * pad one key (value is (1&lt;&lt;24)+49).
   *
   * @since 1.2
   */
  public static final int KEYPAD_1 = KEYCODE_BIT + 49;

  /**
   * Keyboard event constant representing the numeric key
   * pad two key (value is (1&lt;&lt;24)+50).
   *
   * @since 1.2
   */
  public static final int KEYPAD_2 = KEYCODE_BIT + 50;

  /**
   * Keyboard event constant representing the numeric key
   * pad three key (value is (1&lt;&lt;24)+51).
   *
   * @since 1.2
   */
  public static final int KEYPAD_3 = KEYCODE_BIT + 51;

  /**
   * Keyboard event constant representing the numeric key
   * pad four key (value is (1&lt;&lt;24)+52).
   *
   * @since 1.2
   */
  public static final int KEYPAD_4 = KEYCODE_BIT + 52;

  /**
   * Keyboard event constant representing the numeric key
   * pad five key (value is (1&lt;&lt;24)+53).
   *
   * @since 1.2
   */
  public static final int KEYPAD_5 = KEYCODE_BIT + 53;

  /**
   * Keyboard event constant representing the numeric key
   * pad six key (value is (1&lt;&lt;24)+54).
   *
   * @since 1.2
   */
  public static final int KEYPAD_6 = KEYCODE_BIT + 54;

  /**
   * Keyboard event constant representing the numeric key
   * pad seven key (value is (1&lt;&lt;24)+55).
   *
   * @since 1.2
   */
  public static final int KEYPAD_7 = KEYCODE_BIT + 55;

  /**
   * Keyboard event constant representing the numeric key
   * pad eight key (value is (1&lt;&lt;24)+56).
   *
   * @since 1.2
   */
  public static final int KEYPAD_8 = KEYCODE_BIT + 56;

  /**
   * Keyboard event constant representing the numeric key
   * pad nine key (value is (1&lt;&lt;24)+57).
   *
   * @since 1.2
   */
  public static final int KEYPAD_9 = KEYCODE_BIT + 57;

  /**
   * Keyboard event constant representing the numeric key
   * pad equal key (value is (1&lt;&lt;24)+61).
   *
   * @since 1.2
   */
  public static final int KEYPAD_EQUAL = KEYCODE_BIT + 61;

  /**
   * Keyboard event constant representing the numeric key
   * pad enter key (value is (1&lt;&lt;24)+80).
   *
   * @since 1.2
   */
  public static final int KEYPAD_CR = KEYCODE_BIT + 80;

  /**
   * Keyboard event constant representing the help
   * key (value is (1&lt;&lt;24)+81).
   *
   * NOTE: The HELP key maps to the key labeled "help",
   * not "F1". If your keyboard does not have a HELP key,
   * you will never see this key press.  To listen for
   * help on a control, use SWT.Help.
   *
   * @since 1.2
   *
   * @see SWT#Help
   */
  public static final int HELP = KEYCODE_BIT + 81;

  /**
   * Keyboard event constant representing the caps
   * lock key (value is (1&lt;&lt;24)+82).
   *
   * @since 1.2
   */
  public static final int CAPS_LOCK = KEYCODE_BIT + 82;

  /**
   * Keyboard event constant representing the num
   * lock key (value is (1&lt;&lt;24)+83).
   *
   * @since 1.2
   */
  public static final int NUM_LOCK = KEYCODE_BIT + 83;

  /**
   * Keyboard event constant representing the scroll
   * lock key (value is (1&lt;&lt;24)+84).
   *
   * @since 1.2
   */
  public static final int SCROLL_LOCK = KEYCODE_BIT + 84;

  /**
   * Keyboard event constant representing the pause
   * key (value is (1&lt;&lt;24)+85).
   *
   * @since 1.2
   */
  public static final int PAUSE = KEYCODE_BIT + 85;

  /**
   * Keyboard event constant representing the break
   * key (value is (1&lt;&lt;24)+86).
   *
   * @since 1.2
   */
  public static final int BREAK = KEYCODE_BIT + 86;

  /**
   * Keyboard event constant representing the print screen
   * key (value is (1&lt;&lt;24)+87).
   *
   * @since 1.2
   */
  public static final int PRINT_SCREEN = KEYCODE_BIT + 87;

  /**
   * Style constant for line separator behavior (value is 1&lt;&lt;1).
   * <p><b>Used By:</b><ul>
   * <li><code>Label</code></li>
   * <li><code>MenuItem</code></li>
   * <li><code>ToolItem</code></li>
   * </ul></p>
   */
  public static final int SEPARATOR = 1 << 1;

  /**
   * Style constant for push button behavior (value is 1&lt;&lt;3).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * <li><code>MenuItem</code></li>
   * <li><code>ToolItem</code></li>
   * </ul></p>
   */
  public static final int PUSH = 1 << 3;

  /**
   * Style constant for radio button behavior (value is 1&lt;&lt;4).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * <li><code>MenuItem</code></li>
   * <li><code>ToolItem</code></li>
   * </ul></p>
   */
  public static final int RADIO = 1 << 4;

  /**
   * Style constant for check box behavior (value is 1&lt;&lt;5).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * <li><code>MenuItem</code></li>
   * <li><code>ToolItem</code></li>
   * <li><code>Table</code></li>
   * <li><code>Tree</code></li>
   * </ul></p>
   */
  public static final int CHECK = 1 << 5;

  /**
   * Style constant for arrow button behavior (value is 1&lt;&lt;2).
   * <!--
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * </ul></p>
   * -->
   */
  public static final int ARROW = 1 << 2;

  /**
   * Style constant for toggle button behavior (value is 1&lt;&lt;1).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * </ul></p>
   */
  public static final int TOGGLE = 1 << 1;

  /**
   * Style constant for bordered behavior (value is 1&lt;&lt;11).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Control</code> and subclasses</li>
   * </ul></p>
   */
  public static final int BORDER = 1 << 11;

  /**
   * Style constant indicating that the window manager should clip
   * a widget's children with respect to its viewable area. (value is 1&lt;&lt;12).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Control</code> and subclasses</li>
   * </ul></p>
   *
   * @sicne 1.4
   */
  public static final int CLIP_CHILDREN = 1 << 12;

  /**
   * Style constant indicating that the window manager should clip
   * a widget's siblings with respect to its viewable area. (value is 1&lt;&lt;13).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Control</code> and subclasses</li>
   * </ul></p>
   *
   * @sicne 1.4
   */
  public static final int CLIP_SIBLINGS = 1 << 13;

  /**
   * Style constant for flat appearance. (value is 1&lt;&lt;23).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * <li><code>ToolBar</code></li>
   * </ul></p>
   */
  public static final int FLAT = 1 << 23;

  /**
   * Style constant for smooth appearance. (value is 1&lt;&lt;16).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>ProgressBar</code></li>
   * <li><code>Sash</code></li>
   * </ul></p>
   *
   * @since 1.1
   */
  public static final int SMOOTH = 1 << 16;

  /**
   * Style constant for no background behavior (value is 1&lt;&lt;18).
   * <p>
   * By default, before a widget paints, the client area is filled with the current background.
   * When this style is specified, the background is not filled, and the application is responsible
   * for filling every pixel of the client area.
   * This style might be used as an alternative to "double-buffering" in order to reduce flicker.
   * This style does not mean "transparent" - widgets that are obscured will not draw through.
   * </p><p><b>Used By:</b><ul>
   * <li><code>Composite</code></li>
   * </ul></p>
   *
   * @since 1.4
   */
  public static final int NO_BACKGROUND = 1 << 18;

  /**
   * Style constant for no focus from the mouse behavior (value is 1&lt;&lt;19).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Composite</code></li>
   * </ul></p>
   */
  public static final int NO_FOCUS = 1 << 19;

  /**
   * Style constant for no redraw on resize behavior (value is 1&lt;&lt;20).
   * <p>
   * This style stops the entire client area from being invalidated when the size
   * of the Canvas changes. Specifically, when the size of the Canvas gets smaller,
   * the SWT.Paint event is not sent. When it gets bigger, an SWT.Paint event is
   * sent with a GC clipped to only the new areas to be painted. Without this
   * style, the entire client area will be repainted.
   *
   * <br>Note that this is a <em>HINT</em>.
   * </p><p><b>Used By:</b><ul>
   * <li><code>Composite</code></li>
   * </ul></p>
   *
   * @since 1.4
   */
  public static final int NO_REDRAW_RESIZE = 1 << 20;

  /**
   * Style constant for no paint event merging behavior (value is 1&lt;&lt;21).
   *
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Composite</code></li>
   * </ul></p>
   */
  public static final int NO_MERGE_PAINTS = 1 << 21;

  /**
   * Style constant for preventing child radio group behavior (value is 1&lt;&lt;22).
   * <p><b>Used By:</b><ul>
   * <li><code>Composite</code></li>
   * <li><code>Menu</code></li>
   * </ul></p>
   *
   * @since 1.4
   */
  public static final int NO_RADIO_GROUP = 1 << 22;

  /**
   * Style constant for left to right orientation (value is 1&lt;&lt;25).
   * <p>
   * When orientation is not explicitly specified, orientation is
   * inherited.  This means that children will be assigned the
   * orientation of their parent.  To override this behavior and
   * force an orientation for a child, explicitly set the orientation
   * of the child when that child is created.
   * <br>Note that this is a <em>HINT</em>.
   * </p>
   * <p><b>Used By:</b><ul>
   * <li><code>Control</code></li>
   * <li><code>Menu</code></li>
   * <li><code>GC</code></li>
   * </ul></p>
   *
   * @since 1.2
   */
  public static final int LEFT_TO_RIGHT = 1 << 25;

  /**
   * Style constant for horizontal scrollbar behavior (value is 1&lt;&lt;8).
   * <p><b>Used By:</b><ul>
   * <li><code>Scrollable</code> and subclasses</li>
   * </ul></p>
   */
  public static final int H_SCROLL = 1 << 8;

  /**
   * Style constant for vertical scrollbar behavior (value is 1&lt;&lt;9).
   * <p><b>Used By:</b><ul>
   * <li><code>Scrollable</code> and subclasses</li>
   * </ul></p>
   */
  public static final int V_SCROLL = 1 << 9;

  /**
   * Style constant for no scrollbar behavior (value is 1&lt;&lt;4).
   * <p>
   * When neither H_SCROLL or V_SCROLL are specified, controls
   * are free to create the default scroll bars for the control.
   * Using NO_SCROLL overrides the default and forces the control
   * to have no scroll bars.
   *
   * <b>Used By:</b><ul>
   * <!--li><code>Tree</code></li-->
   * <li><code>Table</code></li>
   * </ul></p>
   *
   * @since 1.2
   */
  public static final int NO_SCROLL = 1 << 4;

  /**
   * Style constant for read-only behavior (value is 1&lt;&lt;3).
   * <p><b>Used By:</b><ul>
   * <li><code>Combo</code></li>
   * <li><code>Text</code></li>
   * </ul></p>
   */
  public static final int READ_ONLY = 1 << 3;

  /**
   * Style constant for automatic line wrap behavior (value is 1&lt;&lt;6).
   * <p><b>Used By:</b><ul>
   * <li><code>Button</code></li>
   * <li><code>Label</code></li>
   * <li><code>Text</code></li>
   * <li><code>ToolBar</code></li>
   * <li><code>Spinner</code></li>
   * </ul></p>
   */
  public static final int WRAP = 1 << 6;

  /**
   * Style constant for search behavior (value is 1&lt;&lt;7).
   * <p><b>Used By:</b><ul>
   * <li><code>Text</code></li>
   * </ul></p>
   *
   * @since 1.3
   */
  public static final int SEARCH = 1 << 7;

  // Combo style flags

  /**
   * Style constant for simple (not drop down) behavior (value is 1&lt;&lt;6).
   * <p><b>Used By:</b><ul>
   * <li><code>Combo</code></li>
   * </ul></p>
   */
  public static final int SIMPLE = 1 << 6;

  // Menu style flags

  /**
   * Style constant for menu bar behavior (value is 1&lt;&lt;1).
   * <p><b>Used By:</b><ul>
   * <li><code>Menu</code></li>
   * </ul></p>
   */
  public static final int BAR = 1 << 1;

  /**
   * Style constant for pop up menu behavior (value is 1&lt;&lt;3).
   * <p><b>Used By:</b><ul>
   * <li><code>Menu</code></li>
   * </ul></p>
   */
  public static final int POP_UP = 1 << 3;

  /**
   * Style constant for drop down menu/list behavior (value is 1&lt;&lt;2).
   * <p><b>Used By:</b><ul>
   * <li><code>Menu</code></li>
   * <li><code>ToolItem</code></li>
   * <li><code>CoolItem</code></li>
   * <li><code>Combo</code></li>
   * <li><code>DateTime</code></li>
   * </ul></p>
   */
  public static final int DROP_DOWN = 1 << 2;

  /**
   * Style constant for cascade behavior (value is 1&lt;&lt;6).
   * <p><b>Used By:</b><ul>
   * <li><code>MenuItem</code></li>
   * </ul></p>
   */
  public static final int CASCADE = 1 << 6;

  // Text style flags

  /**
   * Style constant for single selection behavior in lists
   * and single line support on text fields (value is 1&lt;&lt;2).
   * <p><b>Used By:</b><ul>
   * <li><code>Text</code></li>
   * <li><code>List</code></li>
   * <li><code>Table</code></li>
   * <li><code>Tree</code></li>
   * </ul></p>
   */
  public static final int SINGLE = 1 << 2;

  /**
   * Style constant for multi-selection behavior in lists
   * and multiple line support on text fields (value is 1&lt;&lt;1).
   * <p><b>Used By:</b><ul>
   * <li><code>Text</code></li>
   * <li><code>List</code></li>
   * <!-- <li><code>FileDialog</code></li> -->
   * </ul></p>
   */
  public static final int MULTI = 1 << 1;

  /**
   * Style constant for password behavior (value is 1&lt;&lt;22).
   * <p><b>Used By:</b><ul>
   * <li><code>Text</code></li>
   * </ul></p>
   */
  public static final int PASSWORD = 1 << 22;


  // Shells
  /**
   * Style constant for tool window behavior (value is 1&lt;&lt;2).
   * <p>
   * A tool window is a window intended to be used as a floating toolbar.
   * It typically has a title bar that is shorter than a normal title bar,
   * and the window title is typically drawn using a smaller font.
   * <br>Note that this is a <em>HINT</em>.
   * </p><p><b>Used By:</b><ul>
   * <li><code>Decorations</code> and subclasses</li>
   * </ul></p>
   * @since 1.3
   */
  public static final int TOOL = 1 << 2;

  /**
   * Style constant to ensure no trimmings are used (value is 1&lt;&lt;3).
   * <br>Note that this overrides all other trim styles.
   * <p><b>Used By:</b><ul>
   * <li><code>Decorations</code> and subclasses</li>
   * </ul></p>
   */
  public static final int NO_TRIM = 1 << 3;

  /**
   * Style constant for resize box trim (value is 1&lt;&lt;4).
   * <p><b>Used By:</b><ul>
   * <li><code>Decorations</code> and subclasses</li>
   * <!-- <li><code>Tracker</code></li> -->
   * </ul></p>
   */
  public static final int RESIZE = 1 << 4;

  /**
   * Style constant for title area trim (value is 1&lt;&lt;5).
   * <p><b>Used By:</b><ul>
   * <li><code>Decorations</code> and subclasses</li>
   * </ul></p>
   */
  public static final int TITLE = 1 << 5;

  /**
   * Style constant for close box trim (value is 1&lt;&lt;6,
   * since we do not distinguish between CLOSE style and MENU style).
   * <p><b>Used By:</b><ul>
   * <li><code>Decorations</code> and subclasses</li>
   * </ul></p>
   */
  public static final int CLOSE = 1 << 6;

  /**
   * Style constant for minimize box trim (value is 1&lt;&lt;7).
   * <p><b>Used By:</b><ul>
   * <li><code>Decorations</code> and subclasses</li>
   * </ul></p>
   */
  public static final int MIN = 1 << 7;

  /**
   * Style constant for maximize box trim (value is 1&lt;&lt;10).
   * <p><b>Used By:</b><ul>
   * <li><code>Decorations</code> and subclasses</li>
   * </ul></p>
   */
  public static final int MAX = 1 << 10;

  /**
   * Style constant for always on top behavior (value is 1&lt;&lt;14).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Shell</code> and subclasses</li>
   * </ul></p>
   */
  public static final int ON_TOP = 1 << 14;

  /**
   * Style constant for sheet window behavior (value is 1&lt;&lt;28).
   * <p>
   * A sheet window is a window intended to be used as a temporary modal
   * dialog that is attached to a parent window. It is typically used to
   * prompt the user before proceeding. The window trim, positioning and
   * general look of a sheet window is platform specific.
   * <br>Note that this is a <em>HINT</em>.
   * </p><p><b>Used By:</b><ul>
   * <li><code>Shell</code> and subclasses</li>
   * </ul></p>
   *
   * @since 1.3
   */
  public static final int SHEET = 1 << 28;

  /**
   * Trim style convenience constant for the most common top level shell appearance
   * (value is CLOSE|TITLE|MIN|MAX|RESIZE).
   * <p><b>Used By:</b><ul>
   * <li><code>Shell</code></li>
   * </ul></p>
   */
  public static final int SHELL_TRIM = CLOSE | TITLE | MIN | MAX | RESIZE;

  /**
   * Trim style convenience constant for the most common dialog shell appearance
   * (value is CLOSE|TITLE|BORDER).
   * <p><b>Used By:</b><ul>
   * <li><code>Shell</code></li>
   * </ul></p>
   */
  public static final int DIALOG_TRIM = TITLE | CLOSE | BORDER;

  /**
   * Style constant for modeless behavior (value is 0).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Dialog</code></li>
   * <li><code>Shell</code></li>
   * </ul></p>
   *
   * @since 1.3
   */
  public static final int MODELESS = 0;

  /**
   * Style constant for primary modal behavior (value is 1&lt;&lt;15).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Dialog</code></li>
   * <li><code>Shell</code></li>
   * </ul></p>
   *
   * @since 1.3
   */
  public static final int PRIMARY_MODAL = 1 << 15;

  /**
   * Style constant for application modal behavior (value is 1&lt;&lt;16).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Dialog</code></li>
   * <li><code>Shell</code></li>
   * </ul></p>
   */
  public static final int APPLICATION_MODAL = 1 << 16;

  /**
   * Style constant for system modal behavior (value is 1&lt;&lt;17).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Dialog</code></li>
   * <li><code>Shell</code></li>
   * </ul></p>
   *
   * @since 1.3
   */
  public static final int SYSTEM_MODAL = 1 << 17;

  /**
   * Style constant for shadow in behavior (value is 1&lt;&lt;2).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Label</code></li>
   * <li><code>Group</code></li>
   * </ul></p>
   */
  public static final int SHADOW_IN = 1 << 2;

  /**
   * Style constant for shadow out behavior (value is 1&lt;&lt;3).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Label</code></li>
   * <li><code>Group</code></li>
   * <li><code>ToolBar</code></li>
   * </ul></p>
   */
  public static final int SHADOW_OUT = 1 << 3;

  /**
   * Style constant for shadow etched in behavior (value is 1&lt;&lt;4).
   * <br>Note that this is a <em>HINT</em>. It is ignored on all platforms except Motif.
   * <p><b>Used By:</b><ul>
   * <li><code>Group</code></li>
   * </ul></p>
   *
   * @since 1.5
   */
  public static final int SHADOW_ETCHED_IN = 1 << 4;

  /**
   * Style constant for shadow etched out behavior (value is 1&lt;&lt;6).
   * <br>Note that this is a <em>HINT</em>. It is ignored on all platforms except Motif.
   * <p><b>Used By:</b><ul>
   * <li><code>Group</code></li>
   * </ul></p>
   *
   * @since 1.5
   */
  public static final int SHADOW_ETCHED_OUT = 1 << 6;

  /**
   * Style constant for no shadow behavior (value is 1&lt;&lt;5).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Label</code></li>
   * <li><code>Group</code></li>
   * </ul></p>
   */
  public static final int SHADOW_NONE = 1 << 5;

  /**
   * Style constant for selection hiding behavior when the widget loses focus (value is 1&lt;&lt;15).
   * <br>Note that this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Table</code></li>
   * </ul></p>
   *
   * @since 1.4
   */
  public static final int HIDE_SELECTION = 1 << 15;

  /**
   * Style constant for full row selection behavior and
   * selection constant indicating that a full line should be
   * drawn. (value is 1&lt;&lt;16).
   * <br>Note that for some widgets this is a <em>HINT</em>.
   * <p><b>Used By:</b><ul>
   * <li><code>Table</code></li>
   * <li><code>Tree</code></li>
   * <!-- <li><code>StyledText</code></li> -->
   * <!-- <li><code>TextLayout</code></li> -->
   * </ul></p>
   */
  public static final int FULL_SELECTION = 1 << 16;

  /**
   * Style constant for progress bar behavior (value is 1&lt;&lt;1).
   * <p><b>Used By:</b><ul>
   * <li><code>ProgressBar</code></li>
   * </ul></p>
   */
  public static final int INDETERMINATE = 1 << 1;

  /**
   * Style constant to allow virtual data (value is 1&lt;&lt;28).
   * <p><b>Used By:</b><ul>
   * <li><code>Table</code></li>
   * <li><code>Tree</code></li>
   * </ul></p>
   */
  public static final int VIRTUAL = 1 << 28;

  /**
   * Style constant to indicate double buffering (value is 1&lt;&lt;29).
   * <p><b>Used By:</b><ul>
   * <li><code>Control</code></li>
   * </ul></p>
   *
   * @since 1.3
   */
  public static final int DOUBLE_BUFFERED = 1 << 29;

  // ProgressBar State constants
  /**
   * Constant to indicate an error state (value is 1).
   * <p><b>Used By:</b><ul>
   * <li><code>ProgressBar</code></li>
   * </ul></p>
   *
   * @since 1.3
   */
  public static final int ERROR = 1;

  /**
   * Constant to a indicate a paused state (value is 4).
   * <p><b>Used By:</b><ul>
   * <li><code>ProgressBar</code></li>
   * </ul></p>
   *
   * @since 1.3
   */
  public static final int PAUSED = 1 << 2;

  // Font style constants

  /**
   * The font style constant indicating a normal weight, non-italic font
   * (value is 0).
   */
  public static final int NORMAL = 0;

  /**
   * The font style constant indicating a bold weight font
   * (value is 1&lt;&lt;0).
   */
  public static final int BOLD = 1 << 0;

  /**
   * The font style constant indicating an italic font
   * (value is 1&lt;&lt;1).
   */
  public static final int ITALIC = 1 << 1;

  // Cursor style constants

  /**
   * System arrow cursor  (value is 0).
   *
   * @see Cursor
   * @since 1.2
   */
  public static final int CURSOR_ARROW = 0;

  /**
   * System wait cursor  (value is 1).
   *
   * @see Cursor
   * @since 1.2
   */
  public static final int CURSOR_WAIT = 1;

  /**
   * System cross hair cursor  (value is 2).
   *
   * @since 1.2
   */
  public static final int CURSOR_CROSS = 2;

  /**
   * System app startup cursor  (value is 3).
   * @since 1.3
   */
  public static final int CURSOR_APPSTARTING = 3;

  /**
   * System help cursor  (value is 4).
   *
   * @since 1.2
   */
  public static final int CURSOR_HELP = 4;

  /**
   * System resize all directions cursor (value is 5).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZEALL = 5;

  /**
   * System resize north-east-south-west cursor  (value is 6).
   * @since 1.4
   */
  public static final int CURSOR_SIZENESW = 6;

  /**
   * System resize north-south cursor  (value is 7).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZENS = 7;

  /**
   * System resize north-west-south-east cursor  (value is 8).
   *
   * @since 1.4
   */
  public static final int CURSOR_SIZENWSE = 8;

  /**
   * System resize west-east cursor  (value is 9).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZEWE = 9;

  /**
   * System resize north cursor  (value is 10).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZEN = 10;

  /**
   * System resize south cursor  (value is 11).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZES = 11;

  /**
   * System resize east cursor  (value is 12).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZEE = 12;

  /**
   * System resize west cursor  (value is 13).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZEW = 13;

  /**
   * System resize north-east cursor (value is 14).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZENE = 14;

  /**
   * System resize south-east cursor (value is 15).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZESE = 15;

  /**
   * System resize south-west cursor (value is 16).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZESW = 16;

  /**
   * System resize north-west cursor (value is 17).
   *
   * @since 1.2
   */
  public static final int CURSOR_SIZENW = 17;

  /**
   * System up arrow cursor  (value is 18).
   *
   * @since 1.3
   */
  public static final int CURSOR_UPARROW = 18;

  /**
   * System i-beam cursor (value is 19).
   *
   * @since 1.2
   */
  public static final int CURSOR_IBEAM = 19;

  /**
   * System "not allowed" cursor (value is 20).
   *
   * @since 1.3
   */
  public static final int CURSOR_NO = 20;

  /**
   * System hand cursor (value is 21).
   *
   * @since 1.2
   */
  public static final int CURSOR_HAND = 21;

  /**
   * Line drawing style for flat end caps (value is 1).
   *
   * @see org.eclipse.swt.graphics.GC#setLineCap(int)
   * @see org.eclipse.swt.graphics.GC#getLineCap()
   *
   * @since 1.3
   */
  public static final int CAP_FLAT = 1;

  /**
   * Line drawing style for rounded end caps (value is 2).
   *
   * @see org.eclipse.swt.graphics.GC#setLineCap(int)
   * @see org.eclipse.swt.graphics.GC#getLineCap()
   *
   * @since 1.3
   */
  public static final int CAP_ROUND = 2;

  /**
   * Line drawing style for square end caps (value is 3).
   *
   * @see org.eclipse.swt.graphics.GC#setLineCap(int)
   * @see org.eclipse.swt.graphics.GC#getLineCap()
   *
   * @since 1.3
   */
  public static final int CAP_SQUARE = 3;

  /**
   * Line drawing style for miter joins (value is 1).
   *
   * @see org.eclipse.swt.graphics.GC#setLineJoin(int)
   * @see org.eclipse.swt.graphics.GC#getLineJoin()
   *
   * @since 1.3
   */
  public static final int JOIN_MITER = 1;

  /**
   * Line drawing  style for rounded joins (value is 2).
   *
   * @see org.eclipse.swt.graphics.GC#setLineJoin(int)
   * @see org.eclipse.swt.graphics.GC#getLineJoin()
   *
   * @since 1.3
   */
  public static final int JOIN_ROUND = 2;

  /**
   * Line drawing style for bevel joins (value is 3).
   *
   * @see org.eclipse.swt.graphics.GC#setLineJoin(int)
   * @see org.eclipse.swt.graphics.GC#getLineJoin()
   *
   * @since 1.3
   */
  public static final int JOIN_BEVEL = 3;

  /**
   * Draw constant indicating whether the drawing operation
   * should fill the background (value is 1&lt;&lt;0).
   *
   * @since 1.3
   */
  public static final int DRAW_TRANSPARENT = 1 << 0;

  /**
   * Draw constant indicating whether the string drawing operation
   * should handle line-delimiters (value is 1&lt;&lt;1).
   *
   * @since 1.3
   */
  public static final int DRAW_DELIMITER = 1 << 1;

  /**
   * Draw constant indicating whether the string drawing operation
   * should expand TAB characters (value is 1&lt;&lt;2).
   *
   * @since 1.3
   */
  public static final int DRAW_TAB = 1 << 2;

  /**
   * Draw constant indicating whether the string drawing operation
   * should handle mnemonics (value is 1&lt;&lt;3).
   *
   * @since 1.4
   */
  public static final int DRAW_MNEMONIC = 1 << 3;

  // Predefined images

  /**
   * The <code>MessageBox</code> style constant for error icon
   * behavior (value is 1).
   */
  public static final int ICON_ERROR = 1;

  /**
   * The <code>MessageBox</code> style constant for information icon
   * behavior (value is 1&lt;&lt;1).
   */
  public static final int ICON_INFORMATION = 1 << 1;

  /**
   * The <code>MessageBox</code> style constant for question icon
   * behavior (value is 1&lt;&lt;2).
   */
  public static final int ICON_QUESTION = 1 << 2;

  /**
   * The <code>MessageBox</code> style constant for warning icon
   * behavior (value is 1&lt;&lt;3).
   */
  public static final int ICON_WARNING = 1 << 3;

  /**
   * The <code>MessageBox</code> style constant for "working" icon
   * behavior (value is 1&lt;&lt;4).
   */
  public static final int ICON_WORKING = 1 << 4;

  /**
   * The style constant for "search" icon. This style constant is
   * used with <code>Text</code> in combination with <code>SWT.SEARCH
   * </code> (value is 1&lt;&lt;9).
   * <br>Note that this is a <em>HINT</em>.
   *
   * <p><b>Used By:</b><ul>
   * <li><code>Text</code></li>
   * </ul></p>
   *
   * @see #SEARCH
   * @see #ICON_CANCEL
   *
   * @since 1.3
   */
  public static final int ICON_SEARCH = 1 << 9;

  /**
   * The style constant for "cancel" icon. This style constant is
   * used with <code>Text</code> in combination with <code>SWT.SEARCH
   * </code> (value is 1&lt;&lt;8).
   * <br>Note that this is a <em>HINT</em>.
   *
   * <p><b>Used By:</b><ul>
   * <li><code>Text</code></li>
   * </ul></p>
   *
   * @see #SEARCH
   * @see #ICON_SEARCH
   *
   * @since 1.3
   */
  public static final int ICON_CANCEL = 1 << 8;

  /**
   * The <code>MessageBox</code> style constant for an OK button;
   * valid combinations are OK, OK|CANCEL
   * (value is 1&lt;&lt;5).
   * @since 1.2
   */
  public static final int OK = 1 << 5;

  /**
   * The <code>MessageBox</code> style constant for YES button;
   * valid combinations are YES|NO, YES|NO|CANCEL
   * (value is 1&lt;&lt;6).
   * @since 1.2
   */
  public static final int YES = 1 << 6;

  /**
   * The <code>MessageBox</code> style constant for NO button;
   * valid combinations are YES|NO, YES|NO|CANCEL
   * (value is 1&lt;&lt;7).
   * @since 1.2
   */
  public static final int NO = 1 << 7;

  /**
   * The <code>MessageBox</code> style constant for a CANCEL button;
   * valid combinations are OK|CANCEL, YES|NO|CANCEL, RETRY|CANCEL
   * (value is 1&lt;&lt;8).
   *
   * <p><b>Used By:</b><ul>
   * <li><code>MessageBox</code></li>
   * </ul></p>
   * @since 1.2
   */
  public static final int CANCEL = 1 << 8;

  /**
   * The <code>MessageBox</code> style constant for an ABORT button;
   * the only valid combination is ABORT|RETRY|IGNORE
   * (value is 1&lt;&lt;9).
   * @since 1.2
   */
  public static final int ABORT = 1 << 9;

  /**
   * The <code>MessageBox</code> style constant for a RETRY button;
   *  valid combinations are ABORT|RETRY|IGNORE, RETRY|CANCEL
   * (value is 1&lt;&lt;10).
   * @since 1.2
   */
  public static final int RETRY = 1 << 10;

  /**
   * The <code>MessageBox</code> style constant for an IGNORE button;
   * the only valid combination is ABORT|RETRY|IGNORE
   * (value is 1&lt;&lt;11).
   * @since 1.2
   */
  public static final int IGNORE = 1 << 11;

  /**
   * The <code>FileDialog</code> style constant for open file dialog behavior
   * (value is 1&lt;&lt;12).
   * <!-- RAP specific -->
   * <p><strong>Note:</strong></p>This constant is meant to ease
   * single-sourcing. in RAP, there is no <code>FileDialog</code> class (yet).
   * @since 1.3
   */
  public static final int OPEN = 1 << 12;

  /**
   * The <code>FileDialog</code> style constant for save file dialog behavior
   * (value is 1&lt;&lt;13).
   * <!-- RAP specific -->
   * <p><strong>Note:</strong></p>This constant is meant to ease
   * single-sourcing. in RAP, there is no <code>FileDialog</code> class (yet).
   * @since 1.3
   */
  public static final int SAVE = 1 << 13;

  /**
   * The <code>Composite</code> constant to indicate that
   * an attribute (such as background) is not inherited
   * by the children (value is 0).
   *
   * @since 1.1
   */
  public static final int INHERIT_NONE = 0;

  /**
   * The <code>Composite</code> constant to indicate that
   * an attribute (such as background) is inherited by
   * children who choose this value as their "default"
   * (value is 1).  For example, a label child will
   * typically choose to inherit the background color
   * of a composite while a list or table will not.
   *
   * @since 1.1
   */
  public static final int INHERIT_DEFAULT = 1;

  /**
   * The <code>Composite</code> constant to indicate that
   * an attribute (such as background) is inherited by
   * all children.
   *
   * @since 1.1
   */
  public static final int INHERIT_FORCE = 2;

  // Color constants

  /**
   * Default color white (value is 1).
   */
  public static final int COLOR_WHITE = 1;

  /**
   * Default color black (value is 2).
   */
  public static final int COLOR_BLACK = 2;

  /**
   * Default color red (value is 3).
   */
  public static final int COLOR_RED = 3;

  /**
   * Default color dark red (value is 4).
   */
  public static final int COLOR_DARK_RED = 4;

  /**
   * Default color green (value is 5).
   */
  public static final int COLOR_GREEN = 5;

  /**
   * Default color dark green (value is 6).
   */
  public static final int COLOR_DARK_GREEN = 6;

  /**
   * Default color yellow (value is 7).
   */
  public static final int COLOR_YELLOW = 7;

  /**
   * Default color dark yellow (value is 8).
   */
  public static final int COLOR_DARK_YELLOW = 8;

  /**
   * Default color blue (value is 9).
   */
  public static final int COLOR_BLUE = 9;

  /**
   * Default color dark blue (value is 10).
   */
  public static final int COLOR_DARK_BLUE = 10;

  /**
   * Default color magenta (value is 11).
   */
  public static final int COLOR_MAGENTA = 11;

  /**
   * Default color dark magenta (value is 12).
   */
  public static final int COLOR_DARK_MAGENTA = 12;

  /**
   * Default color cyan (value is 13).
   */
  public static final int COLOR_CYAN = 13;

  /**
   * Default color dark cyan (value is 14).
   */
  public static final int COLOR_DARK_CYAN = 14;

  /**
   * Default color gray (value is 15).
   */
  public static final int COLOR_GRAY = 15;

  /**
   * Default color dark gray (value is 16).
   */
  public static final int COLOR_DARK_GRAY = 16;

  // OS color constants

  /**
   * System color used to paint dark shadow areas (value is 17).
   */
  public static final int COLOR_WIDGET_DARK_SHADOW = 17;

  /**
   * System color used to paint normal shadow areas (value is 18).
   */
  public static final int COLOR_WIDGET_NORMAL_SHADOW = 18;

  /**
   * System color used to paint light shadow areas (value is 19).
   */
  public static final int COLOR_WIDGET_LIGHT_SHADOW = 19;

  /**
   * System color used to paint highlight shadow areas (value is 20).
   */
  public static final int COLOR_WIDGET_HIGHLIGHT_SHADOW = 20;

  /**
   * System color used to paint foreground areas (value is 21).
   */
  public static final int COLOR_WIDGET_FOREGROUND = 21;

  /**
   * System color used to paint background areas (value is 22).
   */
  public static final int COLOR_WIDGET_BACKGROUND = 22;

  /**
   * System color used to paint border areas (value is 23).
   */
  public static final int COLOR_WIDGET_BORDER = 23;

  /**
   * System color used to paint list foreground areas (value is 24).
   */
  public static final int COLOR_LIST_FOREGROUND = 24;

  /**
   * System color used to paint list background areas (value is 25).
   */
  public static final int COLOR_LIST_BACKGROUND = 25;

  /**
   * System color used to paint list selection background areas (value is 26).
   */
  public static final int COLOR_LIST_SELECTION = 26;

  /**
   * System color used to paint list selected text (value is 27).
   */
  public static final int COLOR_LIST_SELECTION_TEXT = 27;

  /**
   * System color used to paint tooltip text (value is 28).
   */
  public static final int COLOR_INFO_FOREGROUND = 28;

  /**
   * System color used to paint tooltip background areas (value is 29).
   */
  public static final int COLOR_INFO_BACKGROUND = 29;

  /**
   * System color used to paint title text (value is 30).
   */
  public static final int COLOR_TITLE_FOREGROUND = 30;

  /**
   * System color used to paint title background areas (value is 31).
   */
  public static final int COLOR_TITLE_BACKGROUND = 31;

  /**
   * System color used to paint title background gradient (value is 32).
   */
  public static final int COLOR_TITLE_BACKGROUND_GRADIENT = 32;

  /**
   * System color used to paint inactive title text (value is 33).
   */
  public static final int COLOR_TITLE_INACTIVE_FOREGROUND = 33;

  /**
   * System color used to paint inactive title background areas (value is 34).
   */
  public static final int COLOR_TITLE_INACTIVE_BACKGROUND = 34;

  /**
   * System color used to paint inactive title background gradient (value is 35).
   */
  public static final int COLOR_TITLE_INACTIVE_BACKGROUND_GRADIENT = 35;

  // Error codes

  /**
   * SWT error constant indicating that no error number was specified
   * (value is 1).
   */
  public static final int ERROR_UNSPECIFIED = 1;

  /**
   * SWT error constant indicating that no more handles for an
   * operating system resource are available
   * (value is 2).
   */
  public static final int ERROR_NO_HANDLES = 2;

  /**
   * SWT error constant indicating that no more callback resources are available
   * (value is 3).
   */
  public static final int ERROR_NO_MORE_CALLBACKS = 3;

  /**
   * SWT error constant indicating that a null argument was passed in
   * (value is 4).
   */
  public static final int ERROR_NULL_ARGUMENT = 4;

  /**
   * SWT error constant indicating that an invalid argument was passed in
   * (value is 5).
   */
  public static final int ERROR_INVALID_ARGUMENT = 5;

  /**
   * SWT error constant indicating that a value was found to be
   * outside the allowable range
   * (value is 6).
   */
  public static final int ERROR_INVALID_RANGE = 6;

  /**
   * SWT error constant indicating that a value which can not be
   * zero was found to be
   * (value is 7).
   */
  public static final int ERROR_CANNOT_BE_ZERO = 7;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to provide the value of an item
   * (value is 8).
   */
  public static final int ERROR_CANNOT_GET_ITEM = 8;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to provide the selection
   * (value is 9).
   */
  public static final int ERROR_CANNOT_GET_SELECTION = 9;

  /**
   * SWT error constant indicating that the matrix is not invertible
   * (value is 10).
   */
  public static final int ERROR_CANNOT_INVERT_MATRIX = 10;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to provide the height of an item
   * (value is 11).
   */
  public static final int ERROR_CANNOT_GET_ITEM_HEIGHT = 11;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to provide the text of a widget
   * (value is 12).
   */
  public static final int ERROR_CANNOT_GET_TEXT = 12;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to set the text of a widget
   * (value is 13).
   */
  public static final int ERROR_CANNOT_SET_TEXT = 13;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to add an item
   * (value is 14).
   */
  public static final int ERROR_ITEM_NOT_ADDED = 14;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to remove an item
   * (value is 15).
   */
  public static final int ERROR_ITEM_NOT_REMOVED = 15;

  /**
   * SWT error constant indicating that the graphics library
   * is not available
   * (value is 16).
   */
  public static final int ERROR_NO_GRAPHICS_LIBRARY = 16;

  /**
   * SWT error constant indicating that a particular feature has
   * not been implemented on this platform
   * (value is 20).
   */
  public static final int ERROR_NOT_IMPLEMENTED = 20;

  /**
   * SWT error constant indicating that a menu which needed
   * to have the drop down style had some other style instead
   * (value is 21).
   */
  public static final int ERROR_MENU_NOT_DROP_DOWN = 21;

  /**
   * SWT error constant indicating that an attempt was made to
   * invoke an SWT operation which can only be executed by the
   * user-interface thread from some other thread
   * (value is 22).
   */
  public static final int ERROR_THREAD_INVALID_ACCESS = 22;

  /**
   * SWT error constant indicating that an attempt was made to
   * invoke an SWT operation using a widget which had already
   * been disposed
   * (value is 24).
   */
  public static final int ERROR_WIDGET_DISPOSED = 24;

  /**
   * SWT error constant indicating that a menu item which needed
   * to have the cascade style had some other style instead
   * (value is 27).
   */
  public static final int ERROR_MENUITEM_NOT_CASCADE = 27;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to set the selection of a widget
   * (value is 28).
   */
  public static final int ERROR_CANNOT_SET_SELECTION = 28;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to set the menu
   * (value is 29).
   */
  public static final int ERROR_CANNOT_SET_MENU = 29;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to set the enabled state
   * (value is 30).
   */
  public static final int ERROR_CANNOT_SET_ENABLED = 30;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to provide enabled/disabled state information
   * (value is 31).
   */
  public static final int ERROR_CANNOT_GET_ENABLED = 31;

  /**
   * SWT error constant indicating that a provided widget can
   * not be used as a parent in the current operation
   * (value is 32).
   */
  public static final int ERROR_INVALID_PARENT = 32;

  /**
   * SWT error constant indicating that a menu which needed
   * to have the menu bar style had some other style instead
   * (value is 33).
   */
  public static final int ERROR_MENU_NOT_BAR = 33;

  /**
   * SWT error constant indicating that the underlying operating
   * system was unable to provide count information
   * (value is 36).
   */
  public static final int ERROR_CANNOT_GET_COUNT = 36;

  /**
   * SWT error constant indicating that a menu which needed
   * to have the pop up menu style had some other style instead
   * (value is 37).
   */
  public static final int ERROR_MENU_NOT_POP_UP = 37;

  /**
   * SWT error constant indicating that a graphics operation
   * was attempted with an image of an unsupported depth
   * (value is 38).
   */
  public static final int ERROR_UNSUPPORTED_DEPTH = 38;

  /**
   * SWT error constant indicating that an input/output operation
   * failed during the execution of an SWT operation
   * (value is 39).
   */
  public static final int ERROR_IO = 39;

  /**
   * SWT error constant indicating that a graphics operation
   * was attempted with an image having an invalid format
   * (value is 40).
   */
  public static final int ERROR_INVALID_IMAGE = 40;

  /**
   * SWT error constant indicating that a graphics operation
   * was attempted with an image having a valid but unsupported
   * format
   * (value is 42).
   */
  public static final int ERROR_UNSUPPORTED_FORMAT = 42;

  /**
   * SWT error constant indicating that an attempt was made
   * to subclass an SWT widget class without implementing the
   * <code>checkSubclass()</code> method
   * (value is 43).
   *
   * For additional information see the comment in
   * <code>Widget.checkSubclass()</code>.
   *
   * @see org.eclipse.swt.widgets.Widget#checkSubclass
   */
  public static final int ERROR_INVALID_SUBCLASS = 43;

  /**
   * SWT error constant indicating that an attempt was made to
   * invoke an SWT operation using a graphics object which had
   * already been disposed
   * (value is 44).
   */
  public static final int ERROR_GRAPHIC_DISPOSED = 44;

  /**
   * SWT error constant indicating that an attempt was made to
   * invoke an SWT operation using a device which had already
   * been disposed
   * (value is 45).
   */
  public static final int ERROR_DEVICE_DISPOSED = 45;

  /**
   * SWT error constant indicating that an exception happened
   * when executing a runnable
   * (value is 46).
   */
  public static final int ERROR_FAILED_EXEC = 46;

  /**
   * SWT error constant indicating that an unsatisfied link
   * error occurred while attempting to load a library
   * (value is 47).
   */
  public static final int ERROR_FAILED_LOAD_LIBRARY = 47;

  /**
   * SWT error constant indicating that a font is not valid
   * (value is 48).
   */
  public static final int ERROR_INVALID_FONT = 48;

  /**
   * SWT error constant indicating that an attempt was made to
   * use an BrowserFunction object which had already been disposed
   * (value is 49).
   *
   * @since 1.3
   */
  public static final int ERROR_FUNCTION_DISPOSED = 49;

  /**
   * SWT error constant indicating that an exception happened
   * when evaluating a javascript expression
   * (value is 50).
   *
   * @since 1.4
   */
  public static final int ERROR_FAILED_EVALUATE = 50;

  /**
   * The <code>Image</code> constructor argument indicating that
   * the new image should be a copy of the image provided as
   * an argument  (value is 0).
   * @since 1.3
   */
  public static final int IMAGE_COPY = 0;

  /**
   * Image format constant indicating an unknown image type (value is -1).
   */
  public static final int IMAGE_UNDEFINED = -1;

  /**
   * Image format constant indicating a Windows BMP format image (value is 0).
   */
  public static final int IMAGE_BMP = 0;

  /**
   * Image format constant indicating a run-length encoded
   * Windows BMP format image (value is 1).
   */
  public static final int IMAGE_BMP_RLE = 1;

  /**
   * Image format constant indicating a GIF format image (value is 2).
   */
  public static final int IMAGE_GIF = 2;

  /**
   * Image format constant indicating a ICO format image (value is 3).
   */
  public static final int IMAGE_ICO = 3;

  /**
   * Image format constant indicating a JPEG format image (value is 4).
   */
  public static final int IMAGE_JPEG = 4;

  /**
   * Image format constant indicating a PNG format image (value is 5).
   */
  public static final int IMAGE_PNG = 5;

  /**
   * Image format constant indicating a TIFF format image (value is 6).
   */
  public static final int IMAGE_TIFF = 6;

  /**
   * Image format constant indicating an OS/2 BMP format image (value is 7).
   */
  public static final int IMAGE_OS2_BMP = 7;


  /**
   * GIF image disposal method constants indicating that the
   * disposal method is unspecified (value is 0).
   */
  public static final int DM_UNSPECIFIED = 0x0;

  /**
   * GIF image disposal method constants indicating that the
   * disposal method is to do nothing; that is, to leave the
   * previous image in place (value is 1).
   */
  public static final int DM_FILL_NONE = 0x1;

  /**
   * GIF image disposal method constants indicating that the
   * the previous images should be covered with the background
   * color before displaying the next image (value is 2).
   */
  public static final int DM_FILL_BACKGROUND = 0x2;

  /**
   * GIF image disposal method constants indicating that the
   * disposal method is to restore the previous picture
   * (value is 3).
   */
  public static final int DM_FILL_PREVIOUS = 0x3;

  /**
   * Image transparency constant indicating that the image
   * contains no transparency information (value is 0).
   */
  public static final int TRANSPARENCY_NONE = 0x0;

  /**
   * Image transparency constant indicating that the image
   * contains alpha transparency information (value is 1&lt;&lt;0).
   */
  public static final int TRANSPARENCY_ALPHA = 1 << 0;

  /**
   * Image transparency constant indicating that the image
   * contains a transparency mask (value is 1&lt;&lt;1).
   */
  public static final int TRANSPARENCY_MASK = 1 << 1;

  /**
   * Image transparency constant indicating that the image
   * contains a transparent pixel (value is 1&lt;&lt;2).
   */
  public static final int TRANSPARENCY_PIXEL = 1 << 2;

  /**
   * Style constant for date display (value is 1&lt;&lt;5).
   * <p><b>Used By:</b><ul>
   * <li><code>DateTime</code></li>
   * </ul></p>
   *
   * @since 1.1.1
   */
  public static final int DATE = 1 << 5;

  /**
   * Style constant for time display (value is 1&lt;&lt;7).
   * <p><b>Used By:</b><ul>
   * <li><code>DateTime</code></li>
   * </ul></p>
   *
   * @since 1.1.1
   */
  public static final int TIME = 1 << 7;

  /**
   * Style constant for calendar display (value is 1&lt;&lt;10).
   * <p><b>Used By:</b><ul>
   * <li><code>DateTime</code></li>
   * </ul></p>
   *
   * @since 1.1.1
   */
  public static final int CALENDAR = 1 << 10;

  /**
   * Style constant for short date/time format (value is 1&lt;&lt;15).
   * <p>
   * A short date displays the month and year.
   * A short time displays hours and minutes.
   * <br>Note that this is a <em>HINT</em>.
   * </p>
   * <p><b>Used By:</b><ul>
   * <li><code>DateTime</code></li>
   * </ul></p>
   *
   * @since 1.1.1
   */
  public static final int SHORT = 1 << 15;

  /**
   * Style constant for medium date/time format (value is 1&lt;&lt;16).
   * <p>
   * A medium date displays the day, month and year.
   * A medium time displays hours, minutes, and seconds.
   * <br>Note that this is a <em>HINT</em>.
   * </p>
   * <p><b>Used By:</b><ul>
   * <li><code>DateTime</code></li>
   * </ul></p>
   *
   * @since 1.1.1
   */
  public static final int MEDIUM = 1 << 16;

  /**
   * Style constant for long date/time format (value is 1&lt;&lt;28).
   * <p>
   * A long date displays the day, month and year.
   * A long time displays hours, minutes, and seconds.
   * The day and month names may be displayed.
   * <br>Note that this is a <em>HINT</em>.
   * </p>
   * <p><b>Used By:</b><ul>
   * <li><code>DateTime</code></li>
   * </ul></p>
   *
   * @since 1.1.1
   */
  public static final int LONG = 1 << 28;

  /**
   * Style constant specifying that a Browser should use a Mozilla GRE
   * for rendering its content (value is 1&lt;&lt;15).
   * <p>
   * <p><b>Used By:</b><ul>
   * <li><code>Browser</code></li>
   * </ul></p>
   *
   * @since 1.4
   */
  public static final int MOZILLA = 1 << 15;

  /**
   * Style constant specifying that a Browser should use WebKit
   * for rendering its content (value is 1&lt;&lt;16).
   * <p>
   * <p><b>Used By:</b><ul>
   * <li><code>Browser</code></li>
   * </ul></p>
   *
   * @since 1.4
   */
  public static final int WEBKIT = 1 << 16;

  /**
   * Key value for setting and getting the skin class of a widget.
   *
   * @see org.eclipse.swt.widgets.Widget#getData(String)
   * @see org.eclipse.swt.widgets.Widget#setData(String, Object)
   *
   * @since 1.3
   */
  public static final String SKIN_CLASS = "org.eclipse.swt.skin.class";

  /**
   * Key value for setting and getting the skin id of a widget.
   *
   * @see org.eclipse.swt.widgets.Widget#getData(String)
   * @see org.eclipse.swt.widgets.Widget#setData(String, Object)
   *
   * @since 1.3
   */
  public static final String SKIN_ID = "org.eclipse.swt.skin.id";

  /**
   * ID for the About menu item (value is -1).
   *
   * @see org.eclipse.swt.widgets.MenuItem#setID(int)
   * @see org.eclipse.swt.widgets.MenuItem#getID()
   *
   * @since 1.4
   */
  public static final int ID_ABOUT = -1;

  /**
   * ID for the Preferences menu item (value is -2).
   *
   * @see org.eclipse.swt.widgets.MenuItem#setID(int)
   * @see org.eclipse.swt.widgets.MenuItem#getID()
   *
   * @since 1.4
   */
  public static final int ID_PREFERENCES = -2;

  /**
   * ID for the Hide menu item (value is -3).
   *
   * @see org.eclipse.swt.widgets.MenuItem#setID(int)
   * @see org.eclipse.swt.widgets.MenuItem#getID()
   *
   * @since 1.4
   */
  public static final int ID_HIDE = -3;

  /**
   * ID for the Hide Others menu item (value is -4).
   *
   * @see org.eclipse.swt.widgets.MenuItem#setID(int)
   * @see org.eclipse.swt.widgets.MenuItem#getID()
   *
   * @since 1.4
   */
  public static final int ID_HIDE_OTHERS = -4;

  /**
   * ID for the Show All menu item (value is -5).
   *
   * @see org.eclipse.swt.widgets.MenuItem#setID(int)
   * @see org.eclipse.swt.widgets.MenuItem#getID()
   *
   * @since 1.4
   */
  public static final int ID_SHOW_ALL = -5;

  /**
   * ID for the Quit menu item (value is -6).
   *
   * @see org.eclipse.swt.widgets.MenuItem#setID(int)
   * @see org.eclipse.swt.widgets.MenuItem#getID()
   *
   * @since 1.4
   */
  public static final int ID_QUIT = -6;

  private static final int RWT_VERSION = getVersion( 1, 500 );

  static {
    /*
    * These values represent bit masks that may need to
    * expand in the future.  Therefore they are not initialized
    * in the declaration to stop the compiler from inlining.
    */
    BUTTON_MASK = BUTTON1 | BUTTON2 | BUTTON3 | BUTTON4 | BUTTON5;
    MODIFIER_MASK = ALT | SHIFT | CTRL | COMMAND;

    MOD1 = CONTROL;
    MOD2 = SHIFT;
    MOD3 = ALT;
    MOD4 = 0;
  }

  /**
   * Throws an appropriate exception based on the passed in error code.
   *
   * @param code the SWT error code
   */
  public static void error( int code ) {
    error( code, null );
  }

  /**
   * Throws an appropriate exception based on the passed in error code.
   * The <code>throwable</code> argument should be either null, or the
   * throwable which caused SWT to throw an exception.
   * <p>
   * In SWT, errors are reported by throwing one of three exceptions:
   * <dl>
   * <dd>java.lang.IllegalArgumentException</dd>
   * <dt>thrown whenever one of the API methods is invoked with an illegal argument</dt>
   * <dd>org.eclipse.swt.SWTException (extends java.lang.RuntimeException)</dd>
   * <dt>thrown whenever a recoverable error happens internally in SWT</dt>
   * <dd>org.eclipse.swt.SWTError (extends java.lang.Error)</dd>
   * <dt>thrown whenever a <b>non-recoverable</b> error happens internally in SWT</dt>
   * </dl>
   * This method provides the logic which maps between error codes
   * and one of the above exceptions.
   * </p>
   *
   * @param code the SWT error code.
   * @param throwable the exception which caused the error to occur.
   *
   * @see SWTError
   * @see SWTException
   * @see IllegalArgumentException
   */
  public static void error( int code, Throwable throwable ) {
    error( code, throwable, null );
  }

  /**
   * Throws an appropriate exception based on the passed in error code.
   * The <code>throwable</code> argument should be either null, or the
   * throwable which caused SWT to throw an exception.
   * <p>
   * In SWT, errors are reported by throwing one of three exceptions:
   * <dl>
   * <dd>java.lang.IllegalArgumentException</dd>
   * <dt>thrown whenever one of the API methods is invoked with an illegal argument</dt>
   * <dd>org.eclipse.swt.SWTException (extends java.lang.RuntimeException)</dd>
   * <dt>thrown whenever a recoverable error happens internally in SWT</dt>
   * <dd>org.eclipse.swt.SWTError (extends java.lang.Error)</dd>
   * <dt>thrown whenever a <b>non-recoverable</b> error happens internally in SWT</dt>
   * </dl>
   * This method provides the logic which maps between error codes
   * and one of the above exceptions.
   * </p>
   *
   * @param code the SWT error code.
   * @param throwable the exception which caused the error to occur.
   * @param detail more information about error.
   *
   * @see SWTError
   * @see SWTException
   * @see IllegalArgumentException
   */
  public static void error( int code, Throwable throwable, String detail ) {
    /*
    * This code prevents the creation of "chains" of SWTErrors and
    * SWTExceptions which in turn contain other SWTErrors and
    * SWTExceptions as their throwable. This can occur when low level
    * code throws an exception past a point where a higher layer is
    * being "safe" and catching all exceptions. (Note that, this is
    * _a_bad_thing_ which we always try to avoid.)
    *
    * On the theory that the low level code is closest to the
    * original problem, we simply re-throw the original exception here.
    */
    if( throwable instanceof SWTError ) {
      throw ( SWTError )throwable;
    }
    if( throwable instanceof SWTException ) {
      throw ( SWTException )throwable;
    }
    String message = findErrorText( code );
    if( detail != null ) {
      message += detail;
    }
    switch( code ) {
      /* Null Arguments (non-fatal) */
      case ERROR_NULL_ARGUMENT:
      /* Illegal Arguments (non-fatal) */
      case ERROR_CANNOT_BE_ZERO:
      case ERROR_INVALID_ARGUMENT:
      case ERROR_MENU_NOT_BAR:
      case ERROR_MENU_NOT_DROP_DOWN:
      case ERROR_MENU_NOT_POP_UP:
      case ERROR_MENUITEM_NOT_CASCADE:
      case ERROR_INVALID_PARENT:
      case ERROR_INVALID_RANGE:
        throw new IllegalArgumentException( message );
        /* SWT Exceptions (non-fatal) */
      case ERROR_INVALID_SUBCLASS:
      case ERROR_THREAD_INVALID_ACCESS:
      case ERROR_WIDGET_DISPOSED:
      case ERROR_GRAPHIC_DISPOSED:
      case ERROR_DEVICE_DISPOSED:
      case ERROR_INVALID_IMAGE:
      case ERROR_UNSUPPORTED_DEPTH:
      case ERROR_UNSUPPORTED_FORMAT:
      case ERROR_FAILED_EXEC:
      case ERROR_CANNOT_INVERT_MATRIX:
      case ERROR_NO_GRAPHICS_LIBRARY:
      case ERROR_IO:
        SWTException exception = new SWTException( code, message );
        exception.throwable = throwable;
        throw exception;
      /* Operation System Errors (fatal, may occur only on some platforms) */
      case ERROR_CANNOT_GET_COUNT:
      case ERROR_CANNOT_GET_ENABLED:
      case ERROR_CANNOT_GET_ITEM:
      case ERROR_CANNOT_GET_ITEM_HEIGHT:
      case ERROR_CANNOT_GET_SELECTION:
      case ERROR_CANNOT_GET_TEXT:
      case ERROR_CANNOT_SET_ENABLED:
      case ERROR_CANNOT_SET_MENU:
      case ERROR_CANNOT_SET_SELECTION:
      case ERROR_CANNOT_SET_TEXT:
      case ERROR_ITEM_NOT_ADDED:
      case ERROR_ITEM_NOT_REMOVED:
      case ERROR_NO_HANDLES:
      // FALL THROUGH
      /* SWT Errors (fatal, may occur only on some platforms) */
      case ERROR_FAILED_LOAD_LIBRARY:
      case ERROR_NO_MORE_CALLBACKS:
      case ERROR_NOT_IMPLEMENTED:
      case ERROR_UNSPECIFIED: {
        SWTError error = new SWTError( code, message );
        error.throwable = throwable;
        throw error;
      }
    }
    /* Unknown/Undefined Error */
    SWTError error = new SWTError( code, message );
    error.throwable = throwable;
    throw error;
  }

  static String findErrorText( int code ) {
    String result;
    switch( code ) {
      case ERROR_UNSPECIFIED:
        result = "Unspecified error"; //$NON-NLS-1$
      break;
      case ERROR_NO_HANDLES:
        result = "No more handles"; //$NON-NLS-1$
      break;
      case ERROR_NO_MORE_CALLBACKS:
        result = "No more callbacks"; //$NON-NLS-1$
      break;
      case ERROR_NULL_ARGUMENT:
        result = "Argument cannot be null"; //$NON-NLS-1$
      break;
      case ERROR_INVALID_ARGUMENT:
        result = "Argument not valid"; //$NON-NLS-1$
      break;
      case ERROR_INVALID_RANGE:
        result = "Index out of bounds"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_BE_ZERO:
        result = "Argument cannot be zero"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_GET_ITEM:
        result = "Cannot get item"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_GET_SELECTION:
        result = "Cannot get selection"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_GET_ITEM_HEIGHT:
        result = "Cannot get item height"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_GET_TEXT:
        result = "Cannot get text"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_SET_TEXT:
        result = "Cannot set text"; //$NON-NLS-1$
      break;
      case ERROR_ITEM_NOT_ADDED:
        result = "Item not added"; //$NON-NLS-1$
      break;
      case ERROR_ITEM_NOT_REMOVED:
        result = "Item not removed"; //$NON-NLS-1$
      break;
      case ERROR_NOT_IMPLEMENTED:
        result = "Not implemented"; //$NON-NLS-1$
      break;
      case ERROR_MENU_NOT_DROP_DOWN:
        result = "Menu must be a drop down"; //$NON-NLS-1$
      break;
      case ERROR_THREAD_INVALID_ACCESS:
        result = "Invalid thread access"; //$NON-NLS-1$
      break;
      case ERROR_WIDGET_DISPOSED:
        result = "Widget is disposed"; //$NON-NLS-1$
      break;
      case ERROR_MENUITEM_NOT_CASCADE:
        result = "Menu item is not a CASCADE"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_SET_SELECTION:
        result = "Cannot set selection"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_SET_MENU:
        result = "Cannot set menu"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_SET_ENABLED:
        result = "Cannot set the enabled state"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_GET_ENABLED:
        result = "Cannot get the enabled state"; //$NON-NLS-1$
      break;
      case ERROR_INVALID_PARENT:
        result = "Widget has the wrong parent"; //$NON-NLS-1$
      break;
      case ERROR_MENU_NOT_BAR:
        result = "Menu is not a BAR"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_GET_COUNT:
        result = "Cannot get count"; //$NON-NLS-1$
      break;
      case ERROR_MENU_NOT_POP_UP:
        result = "Menu is not a POP_UP"; //$NON-NLS-1$
      break;
      case ERROR_UNSUPPORTED_DEPTH:
        result = "Unsupported color depth"; //$NON-NLS-1$
      break;
      case ERROR_IO:
        result = "i/o error"; //$NON-NLS-1$
      break;
      case ERROR_INVALID_IMAGE:
        result = "Invalid image"; //$NON-NLS-1$
      break;
      case ERROR_UNSUPPORTED_FORMAT:
        result = "Unsupported or unrecognized format"; //$NON-NLS-1$
      break;
      case ERROR_INVALID_SUBCLASS:
        result = "Subclassing not allowed"; //$NON-NLS-1$
      break;
      case ERROR_GRAPHIC_DISPOSED:
        result = "Graphic is disposed"; //$NON-NLS-1$
      break;
      case ERROR_DEVICE_DISPOSED:
        result = "Device is disposed"; //$NON-NLS-1$
      break;
      case ERROR_FAILED_EXEC:
        result = "Failed to execute runnable"; //$NON-NLS-1$
      break;
      case ERROR_FAILED_LOAD_LIBRARY:
        result = "Unable to load library"; //$NON-NLS-1$
      break;
      case ERROR_CANNOT_INVERT_MATRIX:
        result = "Cannot invert matrix"; //$NON-NLS-1$
      break;
      case ERROR_NO_GRAPHICS_LIBRARY:
        result = "Unable to load graphics library"; //$NON-NLS-1$
      break;
      case ERROR_INVALID_FONT:
        result = "Font not valid"; //$NON-NLS-1$
      break;
      default:
        result = "Unknown error"; //$NON-NLS-1$
    }
    return result;
  }

  /**
   * Returns the SWT version number as an integer. Example: "SWT051" == 51
   * <p>
   * Note: In RWT, this method returns the RWT version number. Use in
   * combination with <code>getPlatform()</code>.
   * </p>
   *
   * @return the SWT version number
   * @since 1.3
   */
  public static int getVersion () {
    return RWT_VERSION;
  }

  /**
   * Returns the SWT platform name.
   * Examples: "win32", "motif", "gtk", "photon", "carbon", "rap"
   *
   * @return the SWT platform name
   *
   * @since 1.1
   */
  public static String getPlatform () {
  	return "rap"; //$NON-NLS-1$
  }

  /**
   * Returns the NLS'ed message for the given argument.
   *
   * @param key the key to look up
   * @return the message for the given key
   *
   * @exception IllegalArgumentException <ul>
   *    <li>ERROR_NULL_ARGUMENT - if the key is null</li>
   * </ul>
   */
  public static String getMessage( String key ) {
    if( key == null ) {
      SWT.error( SWT.ERROR_NULL_ARGUMENT );
    }
    return RWTMessages.getMessage( key, "org.eclipse.swt.internal.SWTMessages" );
  }

  private static int getVersion( int major, int minor ) {
      return major * 1000 + minor;
  }
}