1 files changed, 1904 insertions, 1904 deletions
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java
index c55e81d651..c08db437da 100755
--- a/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/widgets/Tree.java
@@ -1,1907 +1,1907 @@
-package org.eclipse.swt.widgets;
-
-/*
+package org.eclipse.swt.widgets;
+
+/*
  * Copyright (c) 2000, 2002 IBM Corp.  All rights reserved.
  * This file is made available under the terms of the Common Public License v1.0
  * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- */
-
-import org.eclipse.swt.internal.win32.*;
-import org.eclipse.swt.*;
-import org.eclipse.swt.graphics.*;
-import org.eclipse.swt.events.*;
-
-/**
- * Instances of this class provide a selectable user interface object
- * that displays a hierarchy of items and issue notificiation when an
- * item in the hierarchy is selected.
- * <p>
- * The item children that may be added to instances of this class
- * must be of type <code>TreeItem</code>.
- * </p><p>
- * Note that although this class is a subclass of <code>Composite</code>,
- * it does not make sense to add <code>Control</code> children to it,
- * or set a layout on it.
- * </p><p>
- * <dl>
- * <dt><b>Styles:</b></dt>
- * <dd>SINGLE, MULTI, CHECK</dd>
- * <dt><b>Events:</b></dt>
- * <dd>Selection, DefaultSelection, Collapse, Expand</dd>
- * </dl>
- * <p>
- * Note: Only one of the styles SINGLE and MULTI may be specified.
- * </p><p>
- * IMPORTANT: This class is <em>not</em> intended to be subclassed.
- * </p>
- */
-public class Tree extends Composite {
-	int hAnchor;
-	TreeItem [] items;
-	ImageList imageList;
-	boolean dragStarted;
-	boolean ignoreSelect, ignoreExpand, ignoreDeselect;
-	boolean customDraw;
-	static final int TreeProc;
-	static final TCHAR TreeClass = new TCHAR (0, OS.WC_TREEVIEW, true);
-	static {
-		WNDCLASS lpWndClass = new WNDCLASS ();
-		OS.GetClassInfo (0, TreeClass, lpWndClass);
-		TreeProc = lpWndClass.lpfnWndProc;
-	}
-
-/**
- * Constructs a new instance of this class given its parent
- * and a style value describing its behavior and appearance.
- * <p>
- * The style value is either one of the style constants defined in
- * class <code>SWT</code> which is applicable to instances of this
- * class, or must be built by <em>bitwise OR</em>'ing together 
- * (that is, using the <code>int</code> "|" operator) two or more
- * of those <code>SWT</code> style constants. The class description
- * lists the style constants that are applicable to the class.
- * Style bits are also inherited from superclasses.
- * </p>
- *
- * @param parent a composite control which will be the parent of the new instance (cannot be null)
- * @param style the style of control to construct
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
- *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
- * </ul>
- *
- * @see SWT#SINGLE
- * @see SWT#MULTI
- * @see SWT#CHECK
- * @see Widget#checkSubclass
- * @see Widget#getStyle
- */
-public Tree (Composite parent, int style) {
-	super (parent, checkStyle (style));
-}
-
-/**
- * Adds the listener to the collection of listeners who will
- * be notified when the receiver's selection changes, by sending
- * it one of the messages defined in the <code>SelectionListener</code>
- * interface.
- * <p>
- * When <code>widgetSelected</code> is called, the item field of the event object is valid.
- * If the reciever has <code>SWT.CHECK</code> style set and the check selection changes,
- * the event object detail field contains the value <code>SWT.CHECK</code>.
- * <code>widgetDefaultSelected</code> is typically called when an item is double-clicked.
- * The item field of the event object is valid for default selection, but the detail field is not used.
- * </p>
- *
- * @param listener the listener which should be notified
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see SelectionListener
- * @see #removeSelectionListener
- * @see SelectionEvent
- */
-public void addSelectionListener(SelectionListener listener) {
-	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	TypedListener typedListener = new TypedListener (listener);
-	addListener (SWT.Selection, typedListener);
-	addListener (SWT.DefaultSelection, typedListener);
-}
-
-/**
- * Adds the listener to the collection of listeners who will
- * be notified when an item in the receiver is expanded or collapsed
- * by sending it one of the messages defined in the <code>TreeListener</code>
- * interface.
- *
- * @param listener the listener which should be notified
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see TreeListener
- * @see #removeTreeListener
- */
-public void addTreeListener(TreeListener listener) {
-	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	TypedListener typedListener = new TypedListener (listener);
-	addListener (SWT.Expand, typedListener);
-	addListener (SWT.Collapse, typedListener);
-} 
-
-int callWindowProc (int msg, int wParam, int lParam) {
-	if (handle == 0) return 0;
-	return OS.CallWindowProc (TreeProc, handle, msg, wParam, lParam);
-}
-
-static int checkStyle (int style) {
-	/*
-	* Feature in Windows.  It is not possible to create
-	* a tree that scrolls and does not have scroll bars.
-	* The TVS_NOSCROLL style will remove the scroll bars
-	* but the tree will never scroll.  Therefore, no matter
-	* what style bits are specified, set the H_SCROLL and
-	* V_SCROLL bits so that the SWT style will match the
-	* widget that Windows creates.
-	*/
-	style |= SWT.H_SCROLL | SWT.V_SCROLL;
-	return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0);
-}
-
-
-public Point computeSize (int wHint, int hHint, boolean changed) {
-	checkWidget ();
-	int width = 0, height = 0;
-	RECT rect = new RECT ();
-	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
-	while (hItem != 0) {
-		rect.left = hItem;
-		if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect) != 0) {
-			width = Math.max (width, rect.right - rect.left);
-			height += rect.bottom - rect.top;
-		}
-		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
-	}
-	width = width * 2;
-	if (width == 0) width = DEFAULT_WIDTH;
-	if (height == 0) height = DEFAULT_HEIGHT;
-	if (wHint != SWT.DEFAULT) width = wHint;
-	if (hHint != SWT.DEFAULT) height = hHint;
-	int border = getBorderWidth ();
-	width += border * 2;  height += border * 2;
-	if ((style & SWT.V_SCROLL) != 0) {
-		width += OS.GetSystemMetrics (OS.SM_CXVSCROLL);
-	}
-	if ((style & SWT.H_SCROLL) != 0) {
-		height += OS.GetSystemMetrics (OS.SM_CYHSCROLL);
-	}
-	return new Point (width, height);
-}
-
-void createHandle () {
-	super.createHandle ();
-	state &= ~CANVAS;
-	
-	/* Set the checkbox image list */
-	if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
-	
-	/*
-	* Feature in Windows.  When the control is created,
-	* it does not use the default system font.  A new HFONT
-	* is created and destroyed when the control is destroyed.
-	* This means that a program that queries the font from
-	* this control, uses the font in another control and then
-	* destroys this control will have the font unexpectedly
-	* destroyed in the other control.  The fix is to assign
-	* the font ourselves each time the control is created.
-	* The control will not destroy a font that it did not
-	* create.
-	*/
-	int hFont = OS.GetStockObject (OS.SYSTEM_FONT);
-	OS.SendMessage (handle, OS.WM_SETFONT, hFont, 0);
-}
-
-void createItem (TreeItem item, int hParent, int hInsertAfter) {
-	item.foreground = item.background = -1;
-	int id = 0;
-	while (id < items.length && items [id] != null) id++;
-	if (id == items.length) {
-		TreeItem [] newItems = new TreeItem [items.length + 4];
-		System.arraycopy (items, 0, newItems, 0, items.length);
-		items = newItems;
-	}
-	TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT ();
-	tvInsert.hParent = hParent;
-	tvInsert.hInsertAfter = hInsertAfter;
-	tvInsert.lParam = id;
-	tvInsert.iImage = OS.I_IMAGENONE;
-	tvInsert.iSelectedImage = tvInsert.iImage;
-	tvInsert.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM | OS.TVIF_IMAGE | OS.TVIF_SELECTEDIMAGE;
-	
-	/* Set the initial unchecked state */
-	if ((style & SWT.CHECK) != 0) {
-		tvInsert.mask = tvInsert.mask | OS.TVIF_STATE;
-		tvInsert.state = 1 << 12;
-		tvInsert.stateMask = OS.TVIS_STATEIMAGEMASK;
-	}
-
-	/* Insert the item */
-	int hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert);
-	if (hItem == 0) error (SWT.ERROR_ITEM_NOT_ADDED);
-	item.handle = hItem;
-	items [id] = item;
-	
-	/*
-	* This code is intentionally commented.
-	*/
-//	if (hParent != 0) {
-//		int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
-//		bits |= OS.TVS_LINESATROOT;
-//		OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
-//	}
-
-	/*
-	* Bug in Windows.  When a child item is added to a parent item
-	* that has no children outside of WM_NOTIFY with control code
-	* TVN_ITEMEXPANDED, the tree widget does not redraw the +/-
-	* indicator.  The fix is to detect this case and force a redraw.
-	*/
-	if (!OS.IsWindowVisible (handle) || drawCount > 0) return;
-	int hChild = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hParent);
-	if (hChild == 0 || OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hChild) != 0) {
-		return;
-	}
-	RECT rect = new RECT ();
-	rect.left = hParent;
-	if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) != 0) {
-		OS.InvalidateRect (handle, rect, false);
-	}
-}
-
-void createWidget () {
-	super.createWidget ();
-	items = new TreeItem [4];
-}
-
-int defaultBackground () {
-	return OS.GetSysColor (OS.COLOR_WINDOW);
-}
-
-/**
- * Deselects all selected items in the receiver.
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void deselectAll () {
-	checkWidget ();
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_STATE;
-	tvItem.stateMask = OS.TVIS_SELECTED;
-	if ((style & SWT.SINGLE) != 0) {
-		int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-		if (hItem != 0) {
-			tvItem.hItem = hItem;
-			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-		}
-		return;
-	}
-	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);	
-	for (int i=0; i<items.length; i++) {
-		TreeItem item = items [i];
-		if (item != null) {
-			tvItem.hItem = item.handle;
-			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-		}
-	}
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-}
-
-void destroyItem (TreeItem item) {
-	int hItem = item.handle;
-	boolean fixRedraw = false;
-	if (drawCount == 0 && OS.IsWindowVisible (handle)) {
-		RECT rect = new RECT ();
-		rect.left = hItem;
-		fixRedraw = OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) == 0;
-	}
-	if (fixRedraw) {
-		OS.UpdateWindow (handle);
-		OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
-	}
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
-	releaseItems (item.getItems (), tvItem);
-	releaseItem (item, tvItem);
-	OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem);
-	if (fixRedraw) {
-		OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
-		OS.ValidateRect (handle, null);
-	}
-	int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
-	if (count == 0) {
-		if (imageList != null) {
-			OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0);
-			Display display = getDisplay ();
-			display.releaseImageList (imageList);
-		}
-		imageList = null;
-		customDraw = false;
-		items = new TreeItem [4];	
-	}
-}
-
-int getBackgroundPixel () {
-	if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOW);
-	int pixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0);
-	if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOW);
-	return pixel;
-}
-
-int getForegroundPixel () {
-	if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
-	int pixel = OS.SendMessage (handle, OS.TVM_GETTEXTCOLOR, 0, 0);
-	if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
-	return pixel;
-}
-
-/**
- * Returns the item at the given point in the receiver
- * or null if no such item exists. The point is in the
- * coordinate system of the receiver.
- *
- * @param point the point used to locate the item
- * @return the item at the given point
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the point is null</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public TreeItem getItem (Point point) {
-	checkWidget ();
-	if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
-	TVHITTESTINFO lpht = new TVHITTESTINFO ();
-	lpht.x = point.x;	 lpht.y = point.y;
-	OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
-	if (lpht.hItem != 0 && (lpht.flags & OS.TVHT_ONITEM) != 0) {
-		TVITEM tvItem = new TVITEM ();
-		tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
-		tvItem.hItem = lpht.hItem;
-		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-		return items [tvItem.lParam];	
-	}
-	return null;
-}
-
-/**
- * Returns the number of items contained in the receiver
- * that are direct item children of the receiver.  The
- * number that is returned is the number of roots in the
- * tree.
- *
- * @return the number of items
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getItemCount () {
-	checkWidget ();
-	int count = 0;
-	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
-	while (hItem != 0) {
-		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
-		count++;
-	}
-	return count;
-}
-
-/**
- * Returns the height of the area which would be used to
- * display <em>one</em> of the items in the tree.
- *
- * @return the height of one item
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getItemHeight () {
-	checkWidget ();
-	return OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0);
-}
-
-/**
- * Returns the number of items contained in the receiver
- * that are direct item children of the receiver.  These
- * are the roots of the tree.
- * <p>
- * Note: This is not the actual structure used by the receiver
- * to maintain its list of items, so modifying the array will
- * not affect the receiver. 
- * </p>
- *
- * @return the number of items
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public TreeItem [] getItems () {
-	checkWidget ();
-	int count = 0;
-	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
-	while (hItem != 0) {
-		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
-		count++;
-	}
-	int index = 0;
-	TreeItem [] result = new TreeItem [count];
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
-	tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
-	while (tvItem.hItem != 0) {
-		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-		result [index++] = items [tvItem.lParam];
-		tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, tvItem.hItem);
-	}
-	return result;
-}
-
-/**
- * Returns the receiver's parent item, which must be a
- * <code>TreeItem</code> or null when the receiver is a
- * root.
- *
- * @return the receiver's parent item
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public TreeItem getParentItem () {
-	checkWidget ();
-	return null;
-}
-
-/**
- * Returns an array of <code>TreeItem</code>s that are currently
- * selected in the receiver. An empty array indicates that no
- * items are selected.
- * <p>
- * Note: This is not the actual structure used by the receiver
- * to maintain its selection, so modifying the array will
- * not affect the receiver. 
- * </p>
- * @return an array representing the selection
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public TreeItem [] getSelection () {
-	checkWidget ();
-	if ((style & SWT.SINGLE) != 0) {
-		int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-		if (hItem == 0) return new TreeItem [0];
-		TVITEM tvItem = new TVITEM ();
-		tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
-		tvItem.hItem = hItem;
-		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-		if ((tvItem.state & OS.TVIS_SELECTED) == 0) return new TreeItem [0];
-		return new TreeItem [] {items [tvItem.lParam]};
-	}
-	int count = 0;
-	TreeItem [] guess = new TreeItem [8];
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
-	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
-	for (int i=0; i<items.length; i++) {
-		TreeItem item = items [i];
-		if (item != null) {
-			tvItem.hItem = item.handle;
-			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-			if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
-				if (count < guess.length) guess [count] = item;
-				count++;
-			}
-		}
-	}
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-	if (count == 0) return new TreeItem [0];
-	if (count == guess.length) return guess;
-	TreeItem [] result = new TreeItem [count];
-	if (count < guess.length) {
-		System.arraycopy (guess, 0, result, 0, count);
-		return result;
-	}
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
-	int index = 0;
-	for (int i=0; i<items.length; i++) {
-		TreeItem item = items [i];
-		if (item != null) {
-			tvItem.hItem = item.handle;
-			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-			if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
-				result [index++] = item;
-			}
-		}
-	}
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-	return result;
-}
-
-/**
- * Returns the number of selected items contained in the receiver.
- *
- * @return the number of selected items
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public int getSelectionCount () {
-	checkWidget ();
-	if ((style & SWT.SINGLE) != 0) {
-		int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-		if (hItem == 0) return 0;
-		TVITEM tvItem = new TVITEM ();
-		tvItem.mask = OS.TVIF_STATE;
-		tvItem.hItem = hItem;
-		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-		if ((tvItem.state & OS.TVIS_SELECTED) == 0) return 0;
-		return 1;
-	}
-	int count = 0;
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_STATE;
-	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
-	for (int i=0; i<items.length; i++) {
-		TreeItem item = items [i];
-		if (item != null) {
-			tvItem.hItem = item.handle;
-			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-			if ((tvItem.state & OS.TVIS_SELECTED) != 0) count++;
-		}
-	}
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-	return count;
-}
-
-/**
- * Returns the item which is currently at the top of the receiver.
- * This item can change when items are expanded, collapsed, scrolled
- * or new items are added or removed.
- *
- * @return the item at the top of the receiver 
- * 
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- * 
- * @since 2.1
- */
-public TreeItem getTopItem () {
-	checkWidget ();
-	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
-	if (hItem == 0) return null;
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_PARAM;
-	tvItem.hItem = hItem;
-	if (OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem) == 0) return null;
-	return items  [tvItem.lParam];
-}
-
-int imageIndex (Image image) {
-	if (image == null) return OS.I_IMAGENONE;
-	if (imageList == null) {
-		int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
-		if (hOldList != 0) OS.ImageList_Destroy (hOldList);
-		Rectangle bounds = image.getBounds ();
-		imageList = getDisplay ().getImageList (new Point (bounds.width, bounds.height));
-		int index = imageList.indexOf (image);
-		if (index == -1) index = imageList.add (image);
-		int hImageList = imageList.getHandle ();
-		OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, hImageList);
-		return index;
-	}
-	int index = imageList.indexOf (image);
-	if (index != -1) return index;
-	return imageList.add (image);
-}
-
-boolean releaseItem (TreeItem item, TVITEM tvItem) {
-	int hItem = item.handle;
-	if (hItem == hAnchor) hAnchor = 0;
-	if (item.isDisposed ()) return false;
-	tvItem.hItem = hItem;
-	OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-	items [tvItem.lParam] = null;
-	return true;
-}
-
-void releaseItems (TreeItem [] nodes, TVITEM tvItem) {
-	for (int i=0; i<nodes.length; i++) {
-		TreeItem item = nodes [i];
-		TreeItem [] sons = item.getItems ();
-		if (sons.length != 0) {
-			releaseItems (sons, tvItem);
-		}
-		if (releaseItem (item, tvItem)) {
-			item.releaseResources ();
-		}
-	}
-}
-
-void releaseWidget () {
-	for (int i=0; i<items.length; i++) {
-		TreeItem item = items [i];
-		if (item != null && !item.isDisposed ()) {
-			item.releaseResources ();
-		}
-	}
-	/*
-	* Feature in Windows.  For some reason, when
-	* TVM_GETIMAGELIST or TVM_SETIMAGELIST is sent,
-	* the tree issues NM_CUSTOMDRAW messages.  This
-	* behavior is unwanted when the tree is being
-	* disposed.  The fix is to ingore NM_CUSTOMDRAW
-	* messages by usnig the custom draw flag.
-	* 
-	* NOTE: This only happens on Windows XP.
-	*/
-	customDraw = false;
-	items = null;
-	if (imageList != null) {
-		OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0);
-		Display display = getDisplay ();
-		display.releaseImageList (imageList);
-	} else {
-		int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
-		OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0);
-		if (hOldList != 0) OS.ImageList_Destroy (hOldList);
-	}
-	imageList = null;
-	int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0);
-	OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, 0);
-	if (hOldList != 0) OS.ImageList_Destroy (hOldList);
-	super.releaseWidget ();
-}
-
-
-/**
- * Removes all of the items from the receiver.
- * <p>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void removeAll () {
-	checkWidget ();
-	ignoreDeselect = ignoreSelect = true;
-	if (drawCount == 0) {
-		OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
-		/*
-		* This code is intentionally commented.
-		*/
-//		OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
-	}
-	int result = OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, OS.TVI_ROOT);
-	if (drawCount == 0) {
-		OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);	
-		/*
-		* This code is intentionally commented.
-		*/
-//		OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
-		OS.InvalidateRect (handle, null, true);
-	}
-	ignoreDeselect = ignoreSelect = false;
-	if (result == 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
-	for (int i=0; i<items.length; i++) {
-		TreeItem item = items [i];
-		if (item != null && !item.isDisposed ()) {
-			item.releaseResources ();
-		}
-	}
-	if (imageList != null) {
-		OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0);
-		Display display = getDisplay ();
-		display.releaseImageList (imageList);
-	}
-	imageList = null;
-	customDraw = false;
-	items = new TreeItem [4];
-	hAnchor = 0;
-}
-
-/**
- * Removes the listener from the collection of listeners who will
- * be notified when the receiver's selection changes.
- *
- * @param listener the listener which should no longer be notified
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see SelectionListener
- * @see #addSelectionListener
- */
-public void removeSelectionListener (SelectionListener listener) {
-	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	eventTable.unhook (SWT.Selection, listener);
-	eventTable.unhook (SWT.DefaultSelection, listener);	
-}
-
-/**
- * Removes the listener from the collection of listeners who will
- * be notified when items in the receiver are expanded or collapsed..
- *
- * @param listener the listener which should no longer be notified
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see TreeListener
- * @see #addTreeListener
- */
-public void removeTreeListener(TreeListener listener) {
-	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
-	eventTable.unhook (SWT.Expand, listener);
-	eventTable.unhook (SWT.Collapse, listener);
-}
-
-/**
- * Display a mark indicating the point at which an item will be inserted.
- * The drop insert item has a visual hint to show where a dragged item 
- * will be inserted when dropped on the tree.
- * 
- * @param item the insert item.  Null will clear the insertion mark.
- * @param after true places the insert mark above 'item'. false places 
- *	the insert mark below 'item'.
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void setInsertMark (TreeItem item, boolean before) {
-	checkWidget ();
-	int hItem = 0;
-	if (item != null) {
-		if (item.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
-		hItem = item.handle;
-	}
-	OS.SendMessage (handle, OS.TVM_SETINSERTMARK, (before) ? 0 : 1, hItem);
-}
-
-/**
- * Selects all the items in the receiver.
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- */
-public void selectAll () {
-	checkWidget ();
-	if ((style & SWT.SINGLE) != 0) return;	
-	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-	if (hItem == 0) {
-		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
-		if (hItem != 0) {
-			ignoreSelect = true;
-			OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hItem);
-			ignoreSelect = false;
-		}
-	}
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_STATE;
-	tvItem.state = OS.TVIS_SELECTED;
-	tvItem.stateMask = OS.TVIS_SELECTED;
-	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);	
-	for (int i=0; i<items.length; i++) {
-		TreeItem item = items [i];
-		if (item != null) {
-			tvItem.hItem = item.handle;
-			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-		}
-	}
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-}
-
-void setBackgroundPixel (int pixel) {
-	if (background == pixel) return;
-	background = pixel;
-	/*
-	* Bug in Windows.  When TVM_GETBKCOLOR is used more
-	* than once to set the background color of a tree,
-	* the background color of the lines and the plus/minus
-	* does not change to the new color.  The fix is to set
-	* the background color to the default before setting
-	* the new color.
-	*/
-	int oldPixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0);
-	if (oldPixel != -1) OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, -1);
-	OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, pixel);
-	if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
-}
-
-void setBounds (int x, int y, int width, int height, int flags) {
-	/*
-	* Ensure that the selection is visible when the tree is resized
-	* from a zero size to a size that can show the selection.
-	*/
-	boolean fixSelection = false;
-	if ((flags & OS.SWP_NOSIZE) == 0 && (width != 0 || height != 0)) {
-		if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
-			fixSelection = true;
-		}
-	}
-	super.setBounds (x, y, width, height, flags);
-	if (fixSelection) {
-		int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-		if (hItem != 0) showItem (hItem);
-	}
-}
-
-void setCheckboxImageList () {
-	if ((style & SWT.CHECK) == 0) return;
-	int count = 5;
-	int height = OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0), width = height;
-	int hImageList = OS.ImageList_Create (width, height, OS.ILC_COLOR, count, count);
-	int hDC = OS.GetDC (handle);
-	int memDC = OS.CreateCompatibleDC (hDC);
-	int hBitmap = OS.CreateCompatibleBitmap (hDC, width * count, height);
-	int hOldBitmap = OS.SelectObject (memDC, hBitmap);
-	RECT rect = new RECT ();
-	OS.SetRect (rect, 0, 0, width * count, height);
-	int hBrush = OS.CreateSolidBrush (getBackgroundPixel ());
-	OS.FillRect (memDC, rect, hBrush);
-	OS.DeleteObject (hBrush);
-	int oldFont = OS.SelectObject (hDC, defaultFont ());
-	TEXTMETRIC tm = new TEXTMETRIC ();
-	OS.GetTextMetrics (hDC, tm);
-	OS.SelectObject (hDC, oldFont);
-	int itemWidth = Math.min (tm.tmHeight, width);
-	int itemHeight = Math.min (tm.tmHeight, height);
-	int left = (width - itemWidth) / 2, top = (height - itemHeight) / 2 + 1;
-	OS.SetRect (rect, left + width, top, left + width + itemWidth, top + itemHeight);
-	OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_FLAT);
-	rect.left += width;  rect.right += width;
-	OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_FLAT);
-	rect.left += width;  rect.right += width;
-	OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_INACTIVE | OS.DFCS_FLAT);
-	rect.left += width;  rect.right += width;
-	OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_INACTIVE | OS.DFCS_FLAT);
-	OS.SelectObject (memDC, hOldBitmap);
-	OS.DeleteDC (memDC);
-	OS.ReleaseDC (handle, hDC);
-	OS.ImageList_AddMasked (hImageList, hBitmap, 0);
-	OS.DeleteObject (hBitmap);
-	int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0);
-	OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, hImageList);
-	if (hOldList != 0) OS.ImageList_Destroy (hOldList);
-}
-
-void setForegroundPixel (int pixel) {
-	if (foreground == pixel) return;
-	foreground = pixel;
-	OS.SendMessage (handle, OS.TVM_SETTEXTCOLOR, 0, pixel);
-}
-
-public void setRedraw (boolean redraw) {
-	checkWidget ();
-	/*
-	* Bug in Windows.  For some reason, when WM_SETREDRAW
-	* is used to turn redraw on for a tree and the tree
-	* contains no items, the last item in the tree does
-	* not redraw properly.  If the tree has only one item,
-	* that item is not drawn.  If another window is dragged
-	* on top of the item, parts of the item are redrawn
-	* and erased at random.  The fix is to ensure that this
-	* case doesn't happen by inserting and deleting an item
-	* when redraw is turned on and there are no items in
-	* the tree.
-	*/
-	int hItem = 0;
-	if (redraw) {
-		int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
-		if (count == 0) {
-			TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT ();
-			tvInsert.hInsertAfter = OS.TVI_FIRST;
-			hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert);
-		}
-	}
-	super.setRedraw (redraw);
-	if (hItem != 0) {
-		OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem);
-	}
-}
-
-/**
- * Sets the receiver's selection to be the given array of items.
- * The current selected is first cleared, then the new items are
- * selected.
- *
- * @param items the array of items
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the array of items is null</li>
- *    <li>ERROR_INVALID_ARGUMENT - if one of the item has been disposed</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see Tree#deselectAll()
- */
-public void setSelection (TreeItem [] items) {
-	checkWidget ();
-	if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
-		
-	/* Select/deselect the first item */
-	int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-	if (items.length == 0) {
-		if (hOldItem != 0) {
-			TVITEM tvItem = new TVITEM ();
-			tvItem.mask = OS.TVIF_STATE;
-			tvItem.stateMask = OS.TVIS_SELECTED;
-			tvItem.hItem = hOldItem;
-			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-		}
-	} else {
-		int hNewItem = 0;
-		TreeItem item = items [0];
-		if (item != null) {
-			if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
-			hAnchor = hNewItem = item.handle;
-		}
-		ignoreSelect = true;
-		OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem);
-		ignoreSelect = false;
-		/*
-		* Feature in Windows.  When the old and new focused item
-		* are the same, Windows does not check to make sure that
-		* the item is actually selected, not just focused.  The
-		* fix is to force the item to draw selected by setting
-		* the state mask.
-		*/
-		if (hOldItem == hNewItem) {
-			TVITEM tvItem = new TVITEM ();
-			tvItem.mask = OS.TVIF_STATE;
-			tvItem.state = OS.TVIS_SELECTED;
-			tvItem.stateMask = OS.TVIS_SELECTED;
-			tvItem.hItem = hNewItem;
-			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-		}
-		showItem (hNewItem);
-	}
-	if ((style & SWT.SINGLE) != 0) return;
-
-	/* Select/deselect the rest of the items */
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_STATE;
-	tvItem.stateMask = OS.TVIS_SELECTED;
-	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
-	for (int i=0; i<this.items.length; i++) {
-		TreeItem item = this.items [i];
-		if (item != null) {
-			int index = 0;
-			while (index < items.length) {
-				if (items [index] == item) break;
-				index++;
-			}
-			tvItem.hItem = item.handle;
-			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-			if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
-				if (index == items.length) {
-					tvItem.state = 0;
-					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-				}
-			} else {
-				if (index != items.length) {
-					tvItem.state = OS.TVIS_SELECTED;
-					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-				}
-			}
-		}
-	}
-	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-}
-
-/**
- * Sets the item which is currently at the top of the receiver.
- * This item can change when items are expanded, collapsed, scrolled
- * or new items are added or removed.
- *
- * @param item the item to be shown
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the item is null</li>
- *    <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see Tree#getTopItem()
- * 
- * @since 2.1
- */
-public void setTopItem (TreeItem item) {
-	checkWidget ();
-	if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
-	if (item.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
-	OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, item.handle);
-}
-
-void showItem (int hItem) {
-	/*
-	* Bug in Windows.  When TVM_ENSUREVISIBLE is used to ensure
-	* that an item is visible and the client area of the tree is
-	* smaller that the size of one item, TVM_ENSUREVISIBLE makes
-	* the next item in the tree visible by making it the top item
-	* instead of making the desired item visible.  The fix is to
-	* detect the case when the client area is too small and make
-	* the desired visible item be the top item in the tree.
-	*/
-	if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
-		OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, hItem);
-		OS.SendMessage (handle, OS.WM_HSCROLL, OS.SB_TOP ,0);
-	} else {
-		boolean scroll = true;
-		RECT itemRect = new RECT ();
-		itemRect.left = hItem;
-		if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, itemRect) != 0) {
-			RECT rect = new RECT ();
-			OS.GetClientRect (handle, rect);
-			POINT pt = new POINT ();
-			pt.x = itemRect.left;
-			pt.y = itemRect.top;
-			if (OS.PtInRect (rect, pt)) {
-				pt.y = itemRect.bottom;
-				if (OS.PtInRect (rect, pt)) scroll = false;
-			}
-		}
-		if (scroll) OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem);
-	}
-}
-
-/**
- * Shows the item.  If the item is already showing in the receiver,
- * this method simply returns.  Otherwise, the items are scrolled
- * and expanded until the item is visible.
- *
- * @param item the item to be shown
- *
- * @exception IllegalArgumentException <ul>
- *    <li>ERROR_NULL_ARGUMENT - if the item is null</li>
- *    <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
- * </ul>
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see Tree#showSelection()
- */
-public void showItem (TreeItem item) {
-	checkWidget ();
-	if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (item.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
-	showItem (item.handle);
-}
-
-/**
- * Shows the selection.  If the selection is already showing in the receiver,
- * this method simply returns.  Otherwise, the items are scrolled until
- * the selection is visible.
- *
- * @exception SWTException <ul>
- *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
- *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
- * </ul>
- *
- * @see Tree#showItem(TreeItem)
- */
-public void showSelection () {
-	checkWidget ();
-	int hItem = 0;
-	if ((style & SWT.SINGLE) != 0) {	
-		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-		if (hItem == 0) return;
-		TVITEM tvItem = new TVITEM ();
-		tvItem.mask = OS.TVIF_STATE;
-		tvItem.hItem = hItem;
-		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-		if ((tvItem.state & OS.TVIS_SELECTED) == 0) return;
-	} else {
-		TVITEM tvItem = new TVITEM ();
-		tvItem.mask = OS.TVIF_STATE;
-		int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
-		OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
-		int index = 0;
-		while (index <items.length) {
-			TreeItem item = items [index];
-			if (item != null) {
-				tvItem.hItem = item.handle;
-				OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-				if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
-					hItem = tvItem.hItem;
-					break;
-				}
-			}
-			index++;
-		}
-		OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-	}
-	if (hItem != 0) showItem (hItem);
-}
-
-String toolTipText (NMTTDISPINFO hdr) {
-	int hwndToolTip = OS.SendMessage (handle, OS.TVM_GETTOOLTIPS, 0, 0);
-	if (hwndToolTip == hdr.hwndFrom && toolTipText != null) return "";
-	return super.toolTipText (hdr);
-}
-
-int widgetStyle () {
-	int bits = super.widgetStyle () | OS.TVS_SHOWSELALWAYS;
-	bits |= OS.TVS_LINESATROOT | OS.TVS_HASLINES | OS.TVS_HASBUTTONS;
-	/*
-	* This code is intentionally commented.  In future,
-	* FULL_SELECTION may be implemented for trees.
-	*/
-//	if ((style & SWT.FULL_SELECTION) != 0) {
-//		bits |= OS.TVS_FULLROWSELECT;
-//	} else {
-//		bits |= OS.TVS_HASLINES | OS.TVS_HASBUTTONS;
-//	}
-//	bits |= OS.TVS_NOTOOLTIPS;
-	return bits;
-}
-
-TCHAR windowClass () {
-	return TreeClass;
-}
-
-int windowProc () {
-	return TreeProc;
-}
-
-LRESULT WM_CHAR (int wParam, int lParam) {
-	LRESULT result = super.WM_CHAR (wParam, lParam);
-	if (result != null) return result;
-	/*
-	* Feature in Windows.  The tree control beeps
-	* in WM_CHAR when the search for the item that
-	* matches the key stroke fails.  This is the
-	* standard tree behavior but is unexpected when
-	* the key that was typed was ESC, CR or SPACE.
-	* The fix is to avoid calling the tree window
-	* proc in these cases.
-	*/
-	switch (wParam) {
-		case OS.VK_ESCAPE:
-		case OS.VK_RETURN:
-		case OS.VK_SPACE: return LRESULT.ZERO;
-	}
-	return result;
-}
-
-LRESULT WM_GETOBJECT (int wParam, int lParam) {
-	/*
-	* Ensure that there is an accessible object created for this
-	* control because support for checked item accessibility is
-	* temporarily implemented in the accessibility package.
-	*/
-	if ((style & SWT.CHECK) != 0) {
-		if (accessible == null) accessible = new_Accessible (this);
-	}
-	return super.WM_GETOBJECT (wParam, lParam);
-}
-
-LRESULT WM_KEYDOWN (int wParam, int lParam) {
-	LRESULT result = super.WM_KEYDOWN (wParam, lParam);
-	if (result != null) return result;
-	switch (wParam) {
-		case OS.VK_SPACE: {
-			int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-			if (hItem != 0) {
-				hAnchor = hItem;
-				OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem);
-				TVITEM tvItem = new TVITEM ();
-				tvItem.mask = OS.TVIF_STATE | OS.TVIF_PARAM;
-				tvItem.hItem = hItem;
-				if ((style & SWT.CHECK) != 0) {
-					tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
-					OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-					int state = tvItem.state >> 12;
-					if ((state & 0x1) != 0) {
-						state++;
-					} else  {
-						--state;
-					}
-					tvItem.state = state << 12;
-					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-				}
-				tvItem.stateMask = OS.TVIS_SELECTED;
-				OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-				if ((style & SWT.MULTI) != 0 && OS.GetKeyState (OS.VK_CONTROL) < 0) {
-					if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
-						tvItem.state &= ~OS.TVIS_SELECTED;
-					} else {
-						tvItem.state |= OS.TVIS_SELECTED;
-					}
-				} else {
-					tvItem.state |= OS.TVIS_SELECTED;
-				}
-				OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-				Event event = new Event ();
-				event.item = items [tvItem.lParam];
-				postEvent (SWT.Selection, event);
-				if ((style & SWT.CHECK) != 0) {
-					event = new Event ();
-					event.item = items [tvItem.lParam];
-					event.detail = SWT.CHECK;
-					postEvent (SWT.Selection, event);
-				}
-				return LRESULT.ZERO;
-			}
-			break;
-		}
-		case OS.VK_UP:
-		case OS.VK_DOWN:
-		case OS.VK_PRIOR:
-		case OS.VK_NEXT:
-		case OS.VK_HOME:
-		case OS.VK_END: {
-			if ((style & SWT.SINGLE) != 0) break;
-			if (OS.GetKeyState (OS.VK_SHIFT) < 0) {
-				int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-				if (hItem != 0) {
-					if (hAnchor == 0) hAnchor = hItem;
-					ignoreSelect = ignoreDeselect = true;
-					int code = callWindowProc (OS.WM_KEYDOWN, wParam, lParam);
-					ignoreSelect = ignoreDeselect = false;
-					int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-					TVITEM tvItem = new TVITEM ();
-					tvItem.mask = OS.TVIF_STATE;
-					tvItem.stateMask = OS.TVIS_SELECTED;
-					int hDeselectItem = hItem;					
-					RECT rect1 = new RECT ();
-					rect1.left = hAnchor;
-					OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
-					RECT rect2 = rect2 = new RECT ();
-					rect2.left = hDeselectItem;
-					OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
-					int flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE;
-					while (hDeselectItem != hAnchor) {
-						tvItem.hItem = hDeselectItem;
-						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-						hDeselectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hDeselectItem);
-					}
-					int hSelectItem = hAnchor;
-					rect1.left = hNewItem;
-					OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
-					rect2.left = hSelectItem;
-					OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
-					tvItem.state = OS.TVIS_SELECTED;
-					flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE;
-					while (hSelectItem != hNewItem) {
-						tvItem.hItem = hSelectItem;
-						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-						hSelectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hSelectItem);
-					}
-					tvItem.hItem = hNewItem;
-					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-					tvItem.mask = OS.TVIF_PARAM;
-					tvItem.hItem = hNewItem;
-					OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-					Event event = new Event ();
-					event.item = items [tvItem.lParam];
-					postEvent (SWT.Selection, event);
-					return new LRESULT (code);
-				}
-			}
-			if (OS.GetKeyState (OS.VK_CONTROL) < 0) {
-				int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-				if (hItem != 0) {
-					TVITEM tvItem = new TVITEM ();
-					tvItem.mask = OS.TVIF_STATE;
-					tvItem.stateMask = OS.TVIS_SELECTED;
-					tvItem.hItem = hItem;
-					OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-					boolean oldSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
-					int hNewItem = 0;
-					switch (wParam) {
-						case OS.VK_UP:
-							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PREVIOUSVISIBLE, hItem);
-							break;
-						case OS.VK_DOWN:
-							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hItem);
-							break;
-						case OS.VK_HOME:
-							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
-							break;
-						case OS.VK_PRIOR:
-							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
-							if (hNewItem == hItem) {
-								OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEUP, 0);
-								hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
-							}
-							break;
-						case OS.VK_NEXT:			
-							RECT rect = new RECT (), clientRect = new RECT ();
-							OS.GetClientRect (handle, clientRect);
-							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
-							do {
-								int hVisible = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hNewItem);
-								if (hVisible == 0) break;
-								rect.left = hVisible;
-								OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect);
-								if (rect.bottom > clientRect.bottom) break;
-								if ((hNewItem = hVisible) == hItem) {
-									OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEDOWN, 0);
-								}
-							} while (hNewItem != 0);
-							break;
-						case OS.VK_END:
-							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_LASTVISIBLE, 0);
-							break;
-					}
-					if (hNewItem != 0) {
-						OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hNewItem);
-						tvItem.hItem = hNewItem;
-						OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-						boolean newSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
-						if (!newSelected && drawCount == 0) {
-							OS.UpdateWindow (handle);
-							OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
-							/*
-							* This code is intentionally commented.
-							*/
-//							OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
-						}
-						ignoreSelect = true;
-						OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem);
-						ignoreSelect = false;
-						if (oldSelected) {
-							tvItem.state = OS.TVIS_SELECTED;
-							tvItem.hItem = hItem;
-							OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-						}
-						if (!newSelected) {
-							tvItem.state = 0;
-							tvItem.hItem = hNewItem;
-							OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-						}
-						if (!newSelected && drawCount == 0) {
-							RECT rect1 = new RECT (), rect2 = new RECT ();
-							rect1.left = hItem;  rect2.left = hNewItem;
-							OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
-							OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
-							/*
-							* This code is intentionally commented.
-							*/
-//							OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
-							OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
-							if (OS.IsWinCE) {
-								OS.InvalidateRect (handle, rect1, false);
-								OS.InvalidateRect (handle, rect2, false);
-								OS.UpdateWindow (handle);
-							} else {
-								int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE;
-								OS.RedrawWindow (handle, rect1, 0, flags);
-								OS.RedrawWindow (handle, rect2, 0, flags);
-							}
-						}
-						return LRESULT.ZERO;
-					}
-				}
-			}
-			int code = callWindowProc (OS.WM_KEYDOWN, wParam, lParam);
-			hAnchor = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-			return new LRESULT (code);
-		}
-	}
-	return result;
-}
-
-LRESULT WM_KILLFOCUS (int wParam, int lParam) {
-	LRESULT result = super.WM_KILLFOCUS (wParam, lParam);
-	if ((style & SWT.SINGLE) != 0) return result;
-	/*
-	* Feature in Windows.  When multiple item have
-	* the TVIS_SELECTED state, Windows redraws only
-	* the focused item in the color used to show the
-	* selection when the tree loses or gains focus.
-	* The fix is to force Windows to redraw all the
-	* visible items when focus is gained or lost.
-	*/
-	OS.InvalidateRect (handle, null, false);
-	return result;
-}
-
-LRESULT WM_LBUTTONDOWN (int wParam, int lParam) {
-	
-	/*
-	* Feature in Windows.  When a tree item is
-	* reselected, Windows does not issue a WM_NOTIFY.
-	* This is inconsistent with the list widget and
-	* other widgets in Windows.  The fix is to detect
-	* the case when an item is reselected and issue
-	* the notification.  The first part of this work
-	* around is to ensure that the user has selected
-	* an item.
-	*/
-	TVHITTESTINFO lpht = new TVHITTESTINFO ();
-	lpht.x = (short) (lParam & 0xFFFF);
-	lpht.y = (short) (lParam >> 16);
-	OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
-	if (lpht.hItem == 0 || (lpht.flags & OS.TVHT_ONITEM) == 0) {
-		sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
-		int code = callWindowProc (OS.WM_LBUTTONDOWN, wParam, lParam);
-		if (OS.GetCapture () != handle) OS.SetCapture (handle);
-		return new LRESULT (code);
-	}
-	
-	/* Look for check/uncheck */
-	if ((style & SWT.CHECK) != 0) {
-		if ((lpht.flags & OS.TVHT_ONITEMSTATEICON) != 0) {
-			TVITEM tvItem = new TVITEM ();
-			tvItem.hItem = lpht.hItem;
-			tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;	
-			tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
-			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-			int state = tvItem.state >> 12;
-			if ((state & 0x1) != 0) {
-				state++;
-			} else  {
-				--state;
-			}
-			tvItem.state = state << 12;
-			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-			Event event = new Event ();
-			event.item = items [tvItem.lParam];
-			event.detail = SWT.CHECK;
-			postEvent (SWT.Selection, event);
-			sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
-			if (OS.GetCapture () != handle) OS.SetCapture (handle);
-			return LRESULT.ZERO;
-		}
-	}
-
-	/* Get the selected state of the item under the mouse */
-	TVITEM tvItem = new TVITEM ();
-	tvItem.mask = OS.TVIF_STATE;
-	tvItem.stateMask = OS.TVIS_SELECTED;
-	boolean hittestSelected = false;
-	if ((style & SWT.MULTI) != 0) {
-		tvItem.hItem = lpht.hItem;
-		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-		hittestSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
-	}
-	
-	/* Get the selected state of the last selected item */
-	int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-	if ((style & SWT.MULTI) != 0) {
-		tvItem.hItem = hOldItem;
-		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-
-		/* Check for CONTROL or drag selection */
-		if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) {
-			if (drawCount == 0) {
-				OS.UpdateWindow (handle);
-				OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
-				/*
-				* This code is intentionally commented.
-				*/
-//				OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
-			}
-		} else {
-			deselectAll ();
-		}
-	}
-
-	/* Do the selection */
-	sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
-	dragStarted = false;
-	ignoreDeselect = ignoreSelect = true;
-	int code = callWindowProc (OS.WM_LBUTTONDOWN, wParam, lParam);
-	ignoreDeselect = ignoreSelect = false;
-	if (dragStarted && OS.GetCapture () != handle) OS.SetCapture (handle);
-	int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-
-	/*
-	* Feature in Windows.  When the old and new focused item
-	* are the same, Windows does not check to make sure that
-	* the item is actually selected, not just focused.  The
-	* fix is to force the item to draw selected by setting
-	* the state mask.  This is only necessary when the tree
-	* is single select.
-	*/
-	if ((style & SWT.SINGLE) != 0) {
-		if (hOldItem == hNewItem) {
-			tvItem.mask = OS.TVIF_STATE;
-			tvItem.state = OS.TVIS_SELECTED;
-			tvItem.stateMask = OS.TVIS_SELECTED;
-			tvItem.hItem = hNewItem;
-			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-		}
-	}
-	
-	/* Reselect the last item that was unselected */
-	if ((style & SWT.MULTI) != 0) {
-		
-		/* Check for CONTROL and reselect the last item */
-		if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) {
-			if (hOldItem == hNewItem && hOldItem == lpht.hItem) {
-				if ((wParam & OS.MK_CONTROL) != 0) {
-					tvItem.state ^= OS.TVIS_SELECTED;
-					if (dragStarted) tvItem.state = OS.TVIS_SELECTED;
-					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-				}
-			} else {
-				if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
-					tvItem.state = OS.TVIS_SELECTED;
-					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-				}
-				if ((wParam & OS.MK_CONTROL) != 0 && !dragStarted) {
-					if (hittestSelected) {
-						tvItem.state = 0;
-						tvItem.hItem = lpht.hItem;
-						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-					}
-				}
-			}
-			if (drawCount == 0) {
-				RECT rect1 = new RECT (), rect2 = new RECT ();
-				rect1.left = hOldItem;  rect2.left = hNewItem;
-				OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
-				OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
-				/*
-				* This code is intentionally commented.
-				*/
-//				OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
-				OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
-				if (OS.IsWinCE) {
-					OS.InvalidateRect (handle, rect1, false);
-					OS.InvalidateRect (handle, rect2, false);
-					OS.UpdateWindow (handle);
-				} else {
-					int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE;
-					OS.RedrawWindow (handle, rect1, 0, flags);
-					OS.RedrawWindow (handle, rect2, 0, flags);
-				} 
-			}
-		}
-
-		/* Check for SHIFT or normal select and delect/reselect items */
-		if ((wParam & OS.MK_CONTROL) == 0) {
-			if (!hittestSelected || !dragStarted) {
-				tvItem.state = 0;
-				int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
-				OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);	
-				for (int i=0; i<items.length; i++) {
-					TreeItem item = items [i];
-					if (item != null && item.handle != hNewItem) {
-						tvItem.hItem = item.handle;
-						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-					}
-				}
-				tvItem.hItem = hNewItem;
-				tvItem.state = OS.TVIS_SELECTED;
-				OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-				OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
-				if ((wParam & OS.MK_SHIFT) != 0) {
-					RECT rect1 = new RECT ();
-					if (hAnchor == 0) hAnchor = hNewItem;
-					rect1.left = hAnchor;
-					if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1) != 0) {
-						RECT rect2 = rect2 = new RECT ();
-						rect2.left = hNewItem;
-						OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
-						int flags = rect1.top < rect2.top ? OS.TVGN_NEXTVISIBLE : OS.TVGN_PREVIOUSVISIBLE;			
-						tvItem.state = OS.TVIS_SELECTED;
-						int hItem = tvItem.hItem = hAnchor;
-						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-						while (hItem != hNewItem) {
-							tvItem.hItem = hItem;
-							OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
-							hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hItem);
-						}
-					}
-				}
-			}
-		}
-	}
-	if ((wParam & OS.MK_SHIFT) == 0) hAnchor = hNewItem;
-			
-	/* Issue notification */
-	tvItem.hItem = hNewItem;
-	tvItem.mask = OS.TVIF_PARAM;
-	OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-	Event event = new Event ();
-	event.item = items [tvItem.lParam];
-	postEvent (SWT.Selection, event);
-	
-	/*
-	* Feature in Windows.  Inside WM_LBUTTONDOWN and WM_RBUTTONDOWN,
-	* the widget starts a modal loop to determine if the user wants
-	* to begin a drag/drop operation or marque select.  Unfortunately,
-	* this modal loop eats the corresponding mouse up.  The fix is to
-	* detect the cases when the modal loop has eaten the mouse up and
-	* issue a fake mouse up.
-	*/
-	if (dragStarted) {
-		postEvent (SWT.DragDetect);
-	} else {
-		sendMouseEvent (SWT.MouseUp, 1, OS.WM_LBUTTONUP, wParam, lParam);
-	}
-	dragStarted = false;
-	return new LRESULT (code);
-}
-
-LRESULT WM_RBUTTONDOWN (int wParam, int lParam) {
-	/*
-	* Feature in Windows.  The receiver uses WM_RBUTTONDOWN
-	* to initiate a drag/drop operation depending on how the
-	* user moves the mouse.  If the user clicks the right button,
-	* without moving the mouse, the tree consumes the corresponding
-	* WM_RBUTTONUP.  The fix is to avoid calling the window proc for
-	* the tree.
-	*/
-	sendMouseEvent (SWT.MouseDown, 3, OS.WM_RBUTTONDOWN, wParam, lParam);
-	/*
-	* This code is intentionally commented.
-	*/
-//	if (OS.GetCapture () != handle) OS.SetCapture (handle);
-	setFocus ();
-	
-	/*
-	* Feature in Windows.  When the user selects a tree item
-	* with the right mouse button, the item remains selected
-	* only as long as the user does not release or move the
-	* mouse.  As soon as this happens, the selection snaps
-	* back to the previous selection.  This behavior can be
-	* observed in the Explorer but is not instantly apparent
-	* because the Explorer explicity sets the selection when
-	* the user chooses a menu item.  If the user cancels the
-	* menu, the selection snaps back.  The fix is to avoid
-	* calling the window proc and do the selection ourselves.
-	* This behavior is consistent with the table.
-	*/
-	TVHITTESTINFO lpht = new TVHITTESTINFO ();
-	lpht.x = (short) (lParam & 0xFFFF);
-	lpht.y = (short) (lParam >> 16);
-	OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
-	if (lpht.hItem != 0 && (lpht.flags & (OS.TVHT_ONITEMICON | OS.TVHT_ONITEMLABEL)) != 0) {
-		if ((wParam & (OS.MK_CONTROL | OS.MK_SHIFT)) == 0) {
-			TVITEM tvItem = new TVITEM ();
-			tvItem.mask = OS.TVIF_STATE;
-			tvItem.stateMask = OS.TVIS_SELECTED;
-			tvItem.hItem = lpht.hItem;
-			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-			if ((tvItem.state & OS.TVIS_SELECTED) == 0) {
-				ignoreSelect = true;
-				OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, 0);
-				ignoreSelect = false;
-				OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, lpht.hItem);
-			}
-		}
-	}
-	return LRESULT.ZERO;
-}
-
-LRESULT WM_SETFOCUS (int wParam, int lParam) {
-	LRESULT result = super.WM_SETFOCUS (wParam, lParam);
-	if ((style & SWT.SINGLE) != 0) return result;
-	/*
-	* Feature in Windows.  When multiple item have
-	* the TVIS_SELECTED state, Windows redraws only
-	* the focused item in the color used to show the
-	* selection when the tree loses or gains focus.
-	* The fix is to force Windows to redraw all the
-	* visible items when focus is gained or lost.
-	*/
-	OS.InvalidateRect (handle, null, false);
-	return result;
-}
-
-LRESULT WM_SYSCOLORCHANGE (int wParam, int lParam) {
-	LRESULT result = super.WM_SYSCOLORCHANGE (wParam, lParam);
-	if (result != null) return result;
-	if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
-	return result;
-}
-
-LRESULT wmNotifyChild (int wParam, int lParam) {
-	NMHDR hdr = new NMHDR ();
-	OS.MoveMemory (hdr, lParam, NMHDR.sizeof);
-	int code = hdr.code;
-	switch (code) {
-		case OS.NM_CUSTOMDRAW: {
-			if (!customDraw) break;
-			NMTVCUSTOMDRAW nmcd = new NMTVCUSTOMDRAW ();
-			OS.MoveMemory (nmcd, lParam, NMTVCUSTOMDRAW.sizeof);		
-			switch (nmcd.dwDrawStage) {
-				case OS.CDDS_PREPAINT: return new LRESULT (OS.CDRF_NOTIFYITEMDRAW);
-				case OS.CDDS_ITEMPREPAINT:
-					TreeItem item = items [nmcd.lItemlParam];
-					/*
-					* Feature on Windows.  When a new tree item is inserted
-					* using TVM_INSERTITEM and the tree is using custom draw,
-					* a NM_CUSTOMDRAW is sent before TVM_INSERTITEM returns
-					* and before the item is added to the items array.  The
-					* fix is to check for null.
-					* 
-					* NOTE: This only happens on XP with the version 6.00 of
-					* COMCTL32.DLL,
-					*/
-					if (item == null) break;
-					TVITEM tvItem = new TVITEM ();
-					tvItem.mask = OS.TVIF_STATE;
-					tvItem.hItem = item.handle;
-					OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-					if ((tvItem.state & OS.TVIS_SELECTED) != 0) break;
-					int clrText = item.foreground, clrTextBk = item.background;
-					if (clrText == -1 && clrTextBk == -1) break;
-					nmcd.clrText = clrText == -1 ? getForegroundPixel () : clrText;
-					nmcd.clrTextBk = clrTextBk == -1 ? getBackgroundPixel () : clrTextBk;
-					OS.MoveMemory (lParam, nmcd, NMTVCUSTOMDRAW.sizeof);
-					return new LRESULT (OS.CDRF_NEWFONT);
-			}
-			break;
-		}
-		case OS.NM_DBLCLK:
-			int pos = OS.GetMessagePos ();
-			TVHITTESTINFO lpht = new TVHITTESTINFO ();
-			POINT pt = new POINT ();
-			pt.x = (short) (pos & 0xFFFF);
-			pt.y = (short) (pos >> 16);
-			OS.ScreenToClient (handle, pt);
-			lpht.x = pt.x;  lpht.y = pt.y;
-			OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
-			if ((lpht.flags & OS.TVHT_ONITEM) == 0) break;
-			// FALL THROUGH
-		case OS.NM_RETURN:
-		case OS.TVN_SELCHANGEDA:
-		case OS.TVN_SELCHANGEDW:
-			if (!ignoreSelect) {
-				TVITEM tvItem = null;
-				if (code == OS.TVN_SELCHANGED) {
-					tvItem = new TVITEM ();
-					int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
-					OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
-					hAnchor = tvItem.hItem;
-				} else {
-					int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
-					if (hItem != 0) {
-						tvItem = new TVITEM ();
-						tvItem.hItem = hItem;
-						tvItem.mask = OS.TVIF_PARAM;
-						OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
-					}
-				}
-				Event event = new Event ();
-				if (tvItem != null) {
-					event.item = items [tvItem.lParam];
-				}
-				if (code == OS.TVN_SELCHANGED) {
-					postEvent (SWT.Selection, event);
-				} else {
-					postEvent (SWT.DefaultSelection, event);
-				}
-			}
-			if (code == OS.NM_DBLCLK && hooks (SWT.DefaultSelection)) {
-				return LRESULT.ONE;
-			}
-			break;
-		case OS.TVN_SELCHANGINGA:
-		case OS.TVN_SELCHANGINGW:
-			if (!ignoreSelect && !ignoreDeselect) {
-				hAnchor = 0;
-				if ((style & SWT.MULTI) != 0) deselectAll ();
-			}
-			break;
-		case OS.TVN_ITEMEXPANDINGA:
-		case OS.TVN_ITEMEXPANDINGW:
-			if (!ignoreExpand) {
-				TVITEM tvItem = new TVITEM ();
-				int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
-				OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
-				int [] action = new int [1];
-				OS.MoveMemory (action, lParam + NMHDR.sizeof, 4);
-				Event event = new Event ();
-				event.item = items [tvItem.lParam];
-				/*
-				* It is possible (but unlikely), that application
-				* code could have disposed the widget in the expand
-				* or collapse event.  If this happens, end the
-				* processing of the Windows message by returning
-				* zero as the result of the window proc.
-				*/
-				if (action [0] == OS.TVE_EXPAND) {
-					sendEvent (SWT.Expand, event);
-					if (isDisposed ()) return LRESULT.ZERO;
-				}
-				if (action [0] == OS.TVE_COLLAPSE) {
-					sendEvent (SWT.Collapse, event);
-					if (isDisposed ()) return LRESULT.ZERO;
-				}
-			}
-			break;
-		case OS.TVN_BEGINDRAGA:
-		case OS.TVN_BEGINDRAGW:
-		case OS.TVN_BEGINRDRAGA:
-		case OS.TVN_BEGINRDRAGW:
-			TVITEM tvItem = new TVITEM ();
-			int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
-			OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
-			if (tvItem.hItem != 0 && (tvItem.state & OS.TVIS_SELECTED) == 0) {
-				ignoreSelect = ignoreDeselect = true;
-				OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, tvItem.hItem);
-				ignoreSelect = ignoreDeselect = false;
-			}
-			dragStarted = true;
-			break;
-	}
-	return super.wmNotifyChild (wParam, lParam);
-}
-
-}
+ * http://www.eclipse.org/legal/cpl-v10.html
+ */
+
+import org.eclipse.swt.internal.win32.*;
+import org.eclipse.swt.*;
+import org.eclipse.swt.graphics.*;
+import org.eclipse.swt.events.*;
+
+/**
+ * Instances of this class provide a selectable user interface object
+ * that displays a hierarchy of items and issue notificiation when an
+ * item in the hierarchy is selected.
+ * <p>
+ * The item children that may be added to instances of this class
+ * must be of type <code>TreeItem</code>.
+ * </p><p>
+ * Note that although this class is a subclass of <code>Composite</code>,
+ * it does not make sense to add <code>Control</code> children to it,
+ * or set a layout on it.
+ * </p><p>
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>SINGLE, MULTI, CHECK</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>Selection, DefaultSelection, Collapse, Expand</dd>
+ * </dl>
+ * <p>
+ * Note: Only one of the styles SINGLE and MULTI may be specified.
+ * </p><p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ */
+public class Tree extends Composite {
+	int hAnchor;
+	TreeItem [] items;
+	ImageList imageList;
+	boolean dragStarted;
+	boolean ignoreSelect, ignoreExpand, ignoreDeselect;
+	boolean customDraw;
+	static final int TreeProc;
+	static final TCHAR TreeClass = new TCHAR (0, OS.WC_TREEVIEW, true);
+	static {
+		WNDCLASS lpWndClass = new WNDCLASS ();
+		OS.GetClassInfo (0, TreeClass, lpWndClass);
+		TreeProc = lpWndClass.lpfnWndProc;
+	}
+
+/**
+ * Constructs a new instance of this class given its parent
+ * and a style value describing its behavior and appearance.
+ * <p>
+ * The style value is either one of the style constants defined in
+ * class <code>SWT</code> which is applicable to instances of this
+ * class, or must be built by <em>bitwise OR</em>'ing together 
+ * (that is, using the <code>int</code> "|" operator) two or more
+ * of those <code>SWT</code> style constants. The class description
+ * lists the style constants that are applicable to the class.
+ * Style bits are also inherited from superclasses.
+ * </p>
+ *
+ * @param parent a composite control which will be the parent of the new instance (cannot be null)
+ * @param style the style of control to construct
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the parent</li>
+ *    <li>ERROR_INVALID_SUBCLASS - if this class is not an allowed subclass</li>
+ * </ul>
+ *
+ * @see SWT#SINGLE
+ * @see SWT#MULTI
+ * @see SWT#CHECK
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public Tree (Composite parent, int style) {
+	super (parent, checkStyle (style));
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the receiver's selection changes, by sending
+ * it one of the messages defined in the <code>SelectionListener</code>
+ * interface.
+ * <p>
+ * When <code>widgetSelected</code> is called, the item field of the event object is valid.
+ * If the reciever has <code>SWT.CHECK</code> style set and the check selection changes,
+ * the event object detail field contains the value <code>SWT.CHECK</code>.
+ * <code>widgetDefaultSelected</code> is typically called when an item is double-clicked.
+ * The item field of the event object is valid for default selection, but the detail field is not used.
+ * </p>
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see SelectionListener
+ * @see #removeSelectionListener
+ * @see SelectionEvent
+ */
+public void addSelectionListener(SelectionListener listener) {
+	checkWidget ();
+	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	TypedListener typedListener = new TypedListener (listener);
+	addListener (SWT.Selection, typedListener);
+	addListener (SWT.DefaultSelection, typedListener);
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when an item in the receiver is expanded or collapsed
+ * by sending it one of the messages defined in the <code>TreeListener</code>
+ * interface.
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see TreeListener
+ * @see #removeTreeListener
+ */
+public void addTreeListener(TreeListener listener) {
+	checkWidget ();
+	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	TypedListener typedListener = new TypedListener (listener);
+	addListener (SWT.Expand, typedListener);
+	addListener (SWT.Collapse, typedListener);
+} 
+
+int callWindowProc (int msg, int wParam, int lParam) {
+	if (handle == 0) return 0;
+	return OS.CallWindowProc (TreeProc, handle, msg, wParam, lParam);
+}
+
+static int checkStyle (int style) {
+	/*
+	* Feature in Windows.  It is not possible to create
+	* a tree that scrolls and does not have scroll bars.
+	* The TVS_NOSCROLL style will remove the scroll bars
+	* but the tree will never scroll.  Therefore, no matter
+	* what style bits are specified, set the H_SCROLL and
+	* V_SCROLL bits so that the SWT style will match the
+	* widget that Windows creates.
+	*/
+	style |= SWT.H_SCROLL | SWT.V_SCROLL;
+	return checkBits (style, SWT.SINGLE, SWT.MULTI, 0, 0, 0, 0);
+}
+
+
+public Point computeSize (int wHint, int hHint, boolean changed) {
+	checkWidget ();
+	int width = 0, height = 0;
+	RECT rect = new RECT ();
+	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
+	while (hItem != 0) {
+		rect.left = hItem;
+		if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect) != 0) {
+			width = Math.max (width, rect.right - rect.left);
+			height += rect.bottom - rect.top;
+		}
+		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
+	}
+	width = width * 2;
+	if (width == 0) width = DEFAULT_WIDTH;
+	if (height == 0) height = DEFAULT_HEIGHT;
+	if (wHint != SWT.DEFAULT) width = wHint;
+	if (hHint != SWT.DEFAULT) height = hHint;
+	int border = getBorderWidth ();
+	width += border * 2;  height += border * 2;
+	if ((style & SWT.V_SCROLL) != 0) {
+		width += OS.GetSystemMetrics (OS.SM_CXVSCROLL);
+	}
+	if ((style & SWT.H_SCROLL) != 0) {
+		height += OS.GetSystemMetrics (OS.SM_CYHSCROLL);
+	}
+	return new Point (width, height);
+}
+
+void createHandle () {
+	super.createHandle ();
+	state &= ~CANVAS;
+	
+	/* Set the checkbox image list */
+	if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
+	
+	/*
+	* Feature in Windows.  When the control is created,
+	* it does not use the default system font.  A new HFONT
+	* is created and destroyed when the control is destroyed.
+	* This means that a program that queries the font from
+	* this control, uses the font in another control and then
+	* destroys this control will have the font unexpectedly
+	* destroyed in the other control.  The fix is to assign
+	* the font ourselves each time the control is created.
+	* The control will not destroy a font that it did not
+	* create.
+	*/
+	int hFont = OS.GetStockObject (OS.SYSTEM_FONT);
+	OS.SendMessage (handle, OS.WM_SETFONT, hFont, 0);
+}
+
+void createItem (TreeItem item, int hParent, int hInsertAfter) {
+	item.foreground = item.background = -1;
+	int id = 0;
+	while (id < items.length && items [id] != null) id++;
+	if (id == items.length) {
+		TreeItem [] newItems = new TreeItem [items.length + 4];
+		System.arraycopy (items, 0, newItems, 0, items.length);
+		items = newItems;
+	}
+	TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT ();
+	tvInsert.hParent = hParent;
+	tvInsert.hInsertAfter = hInsertAfter;
+	tvInsert.lParam = id;
+	tvInsert.iImage = OS.I_IMAGENONE;
+	tvInsert.iSelectedImage = tvInsert.iImage;
+	tvInsert.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM | OS.TVIF_IMAGE | OS.TVIF_SELECTEDIMAGE;
+	
+	/* Set the initial unchecked state */
+	if ((style & SWT.CHECK) != 0) {
+		tvInsert.mask = tvInsert.mask | OS.TVIF_STATE;
+		tvInsert.state = 1 << 12;
+		tvInsert.stateMask = OS.TVIS_STATEIMAGEMASK;
+	}
+
+	/* Insert the item */
+	int hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert);
+	if (hItem == 0) error (SWT.ERROR_ITEM_NOT_ADDED);
+	item.handle = hItem;
+	items [id] = item;
+	
+	/*
+	* This code is intentionally commented.
+	*/
+//	if (hParent != 0) {
+//		int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+//		bits |= OS.TVS_LINESATROOT;
+//		OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
+//	}
+
+	/*
+	* Bug in Windows.  When a child item is added to a parent item
+	* that has no children outside of WM_NOTIFY with control code
+	* TVN_ITEMEXPANDED, the tree widget does not redraw the +/-
+	* indicator.  The fix is to detect this case and force a redraw.
+	*/
+	if (!OS.IsWindowVisible (handle) || drawCount > 0) return;
+	int hChild = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CHILD, hParent);
+	if (hChild == 0 || OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hChild) != 0) {
+		return;
+	}
+	RECT rect = new RECT ();
+	rect.left = hParent;
+	if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) != 0) {
+		OS.InvalidateRect (handle, rect, false);
+	}
+}
+
+void createWidget () {
+	super.createWidget ();
+	items = new TreeItem [4];
+}
+
+int defaultBackground () {
+	return OS.GetSysColor (OS.COLOR_WINDOW);
+}
+
+/**
+ * Deselects all selected items in the receiver.
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public void deselectAll () {
+	checkWidget ();
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_STATE;
+	tvItem.stateMask = OS.TVIS_SELECTED;
+	if ((style & SWT.SINGLE) != 0) {
+		int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+		if (hItem != 0) {
+			tvItem.hItem = hItem;
+			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+		}
+		return;
+	}
+	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);	
+	for (int i=0; i<items.length; i++) {
+		TreeItem item = items [i];
+		if (item != null) {
+			tvItem.hItem = item.handle;
+			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+		}
+	}
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
+}
+
+void destroyItem (TreeItem item) {
+	int hItem = item.handle;
+	boolean fixRedraw = false;
+	if (drawCount == 0 && OS.IsWindowVisible (handle)) {
+		RECT rect = new RECT ();
+		rect.left = hItem;
+		fixRedraw = OS.SendMessage (handle, OS.TVM_GETITEMRECT, 0, rect) == 0;
+	}
+	if (fixRedraw) {
+		OS.UpdateWindow (handle);
+		OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
+	}
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
+	releaseItems (item.getItems (), tvItem);
+	releaseItem (item, tvItem);
+	OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem);
+	if (fixRedraw) {
+		OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
+		OS.ValidateRect (handle, null);
+	}
+	int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
+	if (count == 0) {
+		if (imageList != null) {
+			OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0);
+			Display display = getDisplay ();
+			display.releaseImageList (imageList);
+		}
+		imageList = null;
+		customDraw = false;
+		items = new TreeItem [4];	
+	}
+}
+
+int getBackgroundPixel () {
+	if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOW);
+	int pixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0);
+	if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOW);
+	return pixel;
+}
+
+int getForegroundPixel () {
+	if (OS.IsWinCE) return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
+	int pixel = OS.SendMessage (handle, OS.TVM_GETTEXTCOLOR, 0, 0);
+	if (pixel == -1) return OS.GetSysColor (OS.COLOR_WINDOWTEXT);
+	return pixel;
+}
+
+/**
+ * Returns the item at the given point in the receiver
+ * or null if no such item exists. The point is in the
+ * coordinate system of the receiver.
+ *
+ * @param point the point used to locate the item
+ * @return the item at the given point
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the point is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public TreeItem getItem (Point point) {
+	checkWidget ();
+	if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
+	TVHITTESTINFO lpht = new TVHITTESTINFO ();
+	lpht.x = point.x;	 lpht.y = point.y;
+	OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
+	if (lpht.hItem != 0 && (lpht.flags & OS.TVHT_ONITEM) != 0) {
+		TVITEM tvItem = new TVITEM ();
+		tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
+		tvItem.hItem = lpht.hItem;
+		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+		return items [tvItem.lParam];	
+	}
+	return null;
+}
+
+/**
+ * Returns the number of items contained in the receiver
+ * that are direct item children of the receiver.  The
+ * number that is returned is the number of roots in the
+ * tree.
+ *
+ * @return the number of items
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public int getItemCount () {
+	checkWidget ();
+	int count = 0;
+	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
+	while (hItem != 0) {
+		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
+		count++;
+	}
+	return count;
+}
+
+/**
+ * Returns the height of the area which would be used to
+ * display <em>one</em> of the items in the tree.
+ *
+ * @return the height of one item
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public int getItemHeight () {
+	checkWidget ();
+	return OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0);
+}
+
+/**
+ * Returns the number of items contained in the receiver
+ * that are direct item children of the receiver.  These
+ * are the roots of the tree.
+ * <p>
+ * Note: This is not the actual structure used by the receiver
+ * to maintain its list of items, so modifying the array will
+ * not affect the receiver. 
+ * </p>
+ *
+ * @return the number of items
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public TreeItem [] getItems () {
+	checkWidget ();
+	int count = 0;
+	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
+	while (hItem != 0) {
+		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, hItem);
+		count++;
+	}
+	int index = 0;
+	TreeItem [] result = new TreeItem [count];
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_HANDLE | OS.TVIF_PARAM;
+	tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
+	while (tvItem.hItem != 0) {
+		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+		result [index++] = items [tvItem.lParam];
+		tvItem.hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXT, tvItem.hItem);
+	}
+	return result;
+}
+
+/**
+ * Returns the receiver's parent item, which must be a
+ * <code>TreeItem</code> or null when the receiver is a
+ * root.
+ *
+ * @return the receiver's parent item
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public TreeItem getParentItem () {
+	checkWidget ();
+	return null;
+}
+
+/**
+ * Returns an array of <code>TreeItem</code>s that are currently
+ * selected in the receiver. An empty array indicates that no
+ * items are selected.
+ * <p>
+ * Note: This is not the actual structure used by the receiver
+ * to maintain its selection, so modifying the array will
+ * not affect the receiver. 
+ * </p>
+ * @return an array representing the selection
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public TreeItem [] getSelection () {
+	checkWidget ();
+	if ((style & SWT.SINGLE) != 0) {
+		int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+		if (hItem == 0) return new TreeItem [0];
+		TVITEM tvItem = new TVITEM ();
+		tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
+		tvItem.hItem = hItem;
+		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+		if ((tvItem.state & OS.TVIS_SELECTED) == 0) return new TreeItem [0];
+		return new TreeItem [] {items [tvItem.lParam]};
+	}
+	int count = 0;
+	TreeItem [] guess = new TreeItem [8];
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;
+	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
+	for (int i=0; i<items.length; i++) {
+		TreeItem item = items [i];
+		if (item != null) {
+			tvItem.hItem = item.handle;
+			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+			if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
+				if (count < guess.length) guess [count] = item;
+				count++;
+			}
+		}
+	}
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
+	if (count == 0) return new TreeItem [0];
+	if (count == guess.length) return guess;
+	TreeItem [] result = new TreeItem [count];
+	if (count < guess.length) {
+		System.arraycopy (guess, 0, result, 0, count);
+		return result;
+	}
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
+	int index = 0;
+	for (int i=0; i<items.length; i++) {
+		TreeItem item = items [i];
+		if (item != null) {
+			tvItem.hItem = item.handle;
+			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+			if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
+				result [index++] = item;
+			}
+		}
+	}
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
+	return result;
+}
+
+/**
+ * Returns the number of selected items contained in the receiver.
+ *
+ * @return the number of selected items
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public int getSelectionCount () {
+	checkWidget ();
+	if ((style & SWT.SINGLE) != 0) {
+		int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+		if (hItem == 0) return 0;
+		TVITEM tvItem = new TVITEM ();
+		tvItem.mask = OS.TVIF_STATE;
+		tvItem.hItem = hItem;
+		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+		if ((tvItem.state & OS.TVIS_SELECTED) == 0) return 0;
+		return 1;
+	}
+	int count = 0;
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_STATE;
+	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
+	for (int i=0; i<items.length; i++) {
+		TreeItem item = items [i];
+		if (item != null) {
+			tvItem.hItem = item.handle;
+			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+			if ((tvItem.state & OS.TVIS_SELECTED) != 0) count++;
+		}
+	}
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
+	return count;
+}
+
+/**
+ * Returns the item which is currently at the top of the receiver.
+ * This item can change when items are expanded, collapsed, scrolled
+ * or new items are added or removed.
+ *
+ * @return the item at the top of the receiver 
+ * 
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ * 
+ * @since 2.1
+ */
+public TreeItem getTopItem () {
+	checkWidget ();
+	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
+	if (hItem == 0) return null;
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_PARAM;
+	tvItem.hItem = hItem;
+	if (OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem) == 0) return null;
+	return items  [tvItem.lParam];
+}
+
+int imageIndex (Image image) {
+	if (image == null) return OS.I_IMAGENONE;
+	if (imageList == null) {
+		int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
+		if (hOldList != 0) OS.ImageList_Destroy (hOldList);
+		Rectangle bounds = image.getBounds ();
+		imageList = getDisplay ().getImageList (new Point (bounds.width, bounds.height));
+		int index = imageList.indexOf (image);
+		if (index == -1) index = imageList.add (image);
+		int hImageList = imageList.getHandle ();
+		OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, hImageList);
+		return index;
+	}
+	int index = imageList.indexOf (image);
+	if (index != -1) return index;
+	return imageList.add (image);
+}
+
+boolean releaseItem (TreeItem item, TVITEM tvItem) {
+	int hItem = item.handle;
+	if (hItem == hAnchor) hAnchor = 0;
+	if (item.isDisposed ()) return false;
+	tvItem.hItem = hItem;
+	OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+	items [tvItem.lParam] = null;
+	return true;
+}
+
+void releaseItems (TreeItem [] nodes, TVITEM tvItem) {
+	for (int i=0; i<nodes.length; i++) {
+		TreeItem item = nodes [i];
+		TreeItem [] sons = item.getItems ();
+		if (sons.length != 0) {
+			releaseItems (sons, tvItem);
+		}
+		if (releaseItem (item, tvItem)) {
+			item.releaseResources ();
+		}
+	}
+}
+
+void releaseWidget () {
+	for (int i=0; i<items.length; i++) {
+		TreeItem item = items [i];
+		if (item != null && !item.isDisposed ()) {
+			item.releaseResources ();
+		}
+	}
+	/*
+	* Feature in Windows.  For some reason, when
+	* TVM_GETIMAGELIST or TVM_SETIMAGELIST is sent,
+	* the tree issues NM_CUSTOMDRAW messages.  This
+	* behavior is unwanted when the tree is being
+	* disposed.  The fix is to ingore NM_CUSTOMDRAW
+	* messages by usnig the custom draw flag.
+	* 
+	* NOTE: This only happens on Windows XP.
+	*/
+	customDraw = false;
+	items = null;
+	if (imageList != null) {
+		OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0);
+		Display display = getDisplay ();
+		display.releaseImageList (imageList);
+	} else {
+		int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_NORMAL, 0);
+		OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_NORMAL, 0);
+		if (hOldList != 0) OS.ImageList_Destroy (hOldList);
+	}
+	imageList = null;
+	int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0);
+	OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, 0);
+	if (hOldList != 0) OS.ImageList_Destroy (hOldList);
+	super.releaseWidget ();
+}
+
+
+/**
+ * Removes all of the items from the receiver.
+ * <p>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public void removeAll () {
+	checkWidget ();
+	ignoreDeselect = ignoreSelect = true;
+	if (drawCount == 0) {
+		OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
+		/*
+		* This code is intentionally commented.
+		*/
+//		OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
+	}
+	int result = OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, OS.TVI_ROOT);
+	if (drawCount == 0) {
+		OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);	
+		/*
+		* This code is intentionally commented.
+		*/
+//		OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
+		OS.InvalidateRect (handle, null, true);
+	}
+	ignoreDeselect = ignoreSelect = false;
+	if (result == 0) error (SWT.ERROR_ITEM_NOT_REMOVED);
+	for (int i=0; i<items.length; i++) {
+		TreeItem item = items [i];
+		if (item != null && !item.isDisposed ()) {
+			item.releaseResources ();
+		}
+	}
+	if (imageList != null) {
+		OS.SendMessage (handle, OS.TVM_SETIMAGELIST, 0, 0);
+		Display display = getDisplay ();
+		display.releaseImageList (imageList);
+	}
+	imageList = null;
+	customDraw = false;
+	items = new TreeItem [4];
+	hAnchor = 0;
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the receiver's selection changes.
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see SelectionListener
+ * @see #addSelectionListener
+ */
+public void removeSelectionListener (SelectionListener listener) {
+	checkWidget ();
+	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	eventTable.unhook (SWT.Selection, listener);
+	eventTable.unhook (SWT.DefaultSelection, listener);	
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when items in the receiver are expanded or collapsed..
+ *
+ * @param listener the listener which should no longer be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see TreeListener
+ * @see #addTreeListener
+ */
+public void removeTreeListener(TreeListener listener) {
+	checkWidget ();
+	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable == null) return;
+	eventTable.unhook (SWT.Expand, listener);
+	eventTable.unhook (SWT.Collapse, listener);
+}
+
+/**
+ * Display a mark indicating the point at which an item will be inserted.
+ * The drop insert item has a visual hint to show where a dragged item 
+ * will be inserted when dropped on the tree.
+ * 
+ * @param item the insert item.  Null will clear the insertion mark.
+ * @param after true places the insert mark above 'item'. false places 
+ *	the insert mark below 'item'.
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public void setInsertMark (TreeItem item, boolean before) {
+	checkWidget ();
+	int hItem = 0;
+	if (item != null) {
+		if (item.isDisposed()) error(SWT.ERROR_INVALID_ARGUMENT);
+		hItem = item.handle;
+	}
+	OS.SendMessage (handle, OS.TVM_SETINSERTMARK, (before) ? 0 : 1, hItem);
+}
+
+/**
+ * Selects all the items in the receiver.
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ */
+public void selectAll () {
+	checkWidget ();
+	if ((style & SWT.SINGLE) != 0) return;	
+	int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+	if (hItem == 0) {
+		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
+		if (hItem != 0) {
+			ignoreSelect = true;
+			OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hItem);
+			ignoreSelect = false;
+		}
+	}
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_STATE;
+	tvItem.state = OS.TVIS_SELECTED;
+	tvItem.stateMask = OS.TVIS_SELECTED;
+	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);	
+	for (int i=0; i<items.length; i++) {
+		TreeItem item = items [i];
+		if (item != null) {
+			tvItem.hItem = item.handle;
+			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+		}
+	}
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
+}
+
+void setBackgroundPixel (int pixel) {
+	if (background == pixel) return;
+	background = pixel;
+	/*
+	* Bug in Windows.  When TVM_GETBKCOLOR is used more
+	* than once to set the background color of a tree,
+	* the background color of the lines and the plus/minus
+	* does not change to the new color.  The fix is to set
+	* the background color to the default before setting
+	* the new color.
+	*/
+	int oldPixel = OS.SendMessage (handle, OS.TVM_GETBKCOLOR, 0, 0);
+	if (oldPixel != -1) OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, -1);
+	OS.SendMessage (handle, OS.TVM_SETBKCOLOR, 0, pixel);
+	if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
+}
+
+void setBounds (int x, int y, int width, int height, int flags) {
+	/*
+	* Ensure that the selection is visible when the tree is resized
+	* from a zero size to a size that can show the selection.
+	*/
+	boolean fixSelection = false;
+	if ((flags & OS.SWP_NOSIZE) == 0 && (width != 0 || height != 0)) {
+		if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
+			fixSelection = true;
+		}
+	}
+	super.setBounds (x, y, width, height, flags);
+	if (fixSelection) {
+		int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+		if (hItem != 0) showItem (hItem);
+	}
+}
+
+void setCheckboxImageList () {
+	if ((style & SWT.CHECK) == 0) return;
+	int count = 5;
+	int height = OS.SendMessage (handle, OS.TVM_GETITEMHEIGHT, 0, 0), width = height;
+	int hImageList = OS.ImageList_Create (width, height, OS.ILC_COLOR, count, count);
+	int hDC = OS.GetDC (handle);
+	int memDC = OS.CreateCompatibleDC (hDC);
+	int hBitmap = OS.CreateCompatibleBitmap (hDC, width * count, height);
+	int hOldBitmap = OS.SelectObject (memDC, hBitmap);
+	RECT rect = new RECT ();
+	OS.SetRect (rect, 0, 0, width * count, height);
+	int hBrush = OS.CreateSolidBrush (getBackgroundPixel ());
+	OS.FillRect (memDC, rect, hBrush);
+	OS.DeleteObject (hBrush);
+	int oldFont = OS.SelectObject (hDC, defaultFont ());
+	TEXTMETRIC tm = new TEXTMETRIC ();
+	OS.GetTextMetrics (hDC, tm);
+	OS.SelectObject (hDC, oldFont);
+	int itemWidth = Math.min (tm.tmHeight, width);
+	int itemHeight = Math.min (tm.tmHeight, height);
+	int left = (width - itemWidth) / 2, top = (height - itemHeight) / 2 + 1;
+	OS.SetRect (rect, left + width, top, left + width + itemWidth, top + itemHeight);
+	OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_FLAT);
+	rect.left += width;  rect.right += width;
+	OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_FLAT);
+	rect.left += width;  rect.right += width;
+	OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_INACTIVE | OS.DFCS_FLAT);
+	rect.left += width;  rect.right += width;
+	OS.DrawFrameControl (memDC, rect, OS.DFC_BUTTON, OS.DFCS_BUTTONCHECK | OS.DFCS_CHECKED | OS.DFCS_INACTIVE | OS.DFCS_FLAT);
+	OS.SelectObject (memDC, hOldBitmap);
+	OS.DeleteDC (memDC);
+	OS.ReleaseDC (handle, hDC);
+	OS.ImageList_AddMasked (hImageList, hBitmap, 0);
+	OS.DeleteObject (hBitmap);
+	int hOldList = OS.SendMessage (handle, OS.TVM_GETIMAGELIST, OS.TVSIL_STATE, 0);
+	OS.SendMessage (handle, OS.TVM_SETIMAGELIST, OS.TVSIL_STATE, hImageList);
+	if (hOldList != 0) OS.ImageList_Destroy (hOldList);
+}
+
+void setForegroundPixel (int pixel) {
+	if (foreground == pixel) return;
+	foreground = pixel;
+	OS.SendMessage (handle, OS.TVM_SETTEXTCOLOR, 0, pixel);
+}
+
+public void setRedraw (boolean redraw) {
+	checkWidget ();
+	/*
+	* Bug in Windows.  For some reason, when WM_SETREDRAW
+	* is used to turn redraw on for a tree and the tree
+	* contains no items, the last item in the tree does
+	* not redraw properly.  If the tree has only one item,
+	* that item is not drawn.  If another window is dragged
+	* on top of the item, parts of the item are redrawn
+	* and erased at random.  The fix is to ensure that this
+	* case doesn't happen by inserting and deleting an item
+	* when redraw is turned on and there are no items in
+	* the tree.
+	*/
+	int hItem = 0;
+	if (redraw) {
+		int count = OS.SendMessage (handle, OS.TVM_GETCOUNT, 0, 0);
+		if (count == 0) {
+			TVINSERTSTRUCT tvInsert = new TVINSERTSTRUCT ();
+			tvInsert.hInsertAfter = OS.TVI_FIRST;
+			hItem = OS.SendMessage (handle, OS.TVM_INSERTITEM, 0, tvInsert);
+		}
+	}
+	super.setRedraw (redraw);
+	if (hItem != 0) {
+		OS.SendMessage (handle, OS.TVM_DELETEITEM, 0, hItem);
+	}
+}
+
+/**
+ * Sets the receiver's selection to be the given array of items.
+ * The current selected is first cleared, then the new items are
+ * selected.
+ *
+ * @param items the array of items
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the array of items is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if one of the item has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see Tree#deselectAll()
+ */
+public void setSelection (TreeItem [] items) {
+	checkWidget ();
+	if (items == null) error (SWT.ERROR_NULL_ARGUMENT);
+		
+	/* Select/deselect the first item */
+	int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+	if (items.length == 0) {
+		if (hOldItem != 0) {
+			TVITEM tvItem = new TVITEM ();
+			tvItem.mask = OS.TVIF_STATE;
+			tvItem.stateMask = OS.TVIS_SELECTED;
+			tvItem.hItem = hOldItem;
+			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+		}
+	} else {
+		int hNewItem = 0;
+		TreeItem item = items [0];
+		if (item != null) {
+			if (item.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
+			hAnchor = hNewItem = item.handle;
+		}
+		ignoreSelect = true;
+		OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem);
+		ignoreSelect = false;
+		/*
+		* Feature in Windows.  When the old and new focused item
+		* are the same, Windows does not check to make sure that
+		* the item is actually selected, not just focused.  The
+		* fix is to force the item to draw selected by setting
+		* the state mask.
+		*/
+		if (hOldItem == hNewItem) {
+			TVITEM tvItem = new TVITEM ();
+			tvItem.mask = OS.TVIF_STATE;
+			tvItem.state = OS.TVIS_SELECTED;
+			tvItem.stateMask = OS.TVIS_SELECTED;
+			tvItem.hItem = hNewItem;
+			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+		}
+		showItem (hNewItem);
+	}
+	if ((style & SWT.SINGLE) != 0) return;
+
+	/* Select/deselect the rest of the items */
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_STATE;
+	tvItem.stateMask = OS.TVIS_SELECTED;
+	int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
+	for (int i=0; i<this.items.length; i++) {
+		TreeItem item = this.items [i];
+		if (item != null) {
+			int index = 0;
+			while (index < items.length) {
+				if (items [index] == item) break;
+				index++;
+			}
+			tvItem.hItem = item.handle;
+			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+			if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
+				if (index == items.length) {
+					tvItem.state = 0;
+					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+				}
+			} else {
+				if (index != items.length) {
+					tvItem.state = OS.TVIS_SELECTED;
+					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+				}
+			}
+		}
+	}
+	OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
+}
+
+/**
+ * Sets the item which is currently at the top of the receiver.
+ * This item can change when items are expanded, collapsed, scrolled
+ * or new items are added or removed.
+ *
+ * @param item the item to be shown
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the item is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see Tree#getTopItem()
+ * 
+ * @since 2.1
+ */
+public void setTopItem (TreeItem item) {
+	checkWidget ();
+	if (item == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
+	if (item.isDisposed ()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
+	OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, item.handle);
+}
+
+void showItem (int hItem) {
+	/*
+	* Bug in Windows.  When TVM_ENSUREVISIBLE is used to ensure
+	* that an item is visible and the client area of the tree is
+	* smaller that the size of one item, TVM_ENSUREVISIBLE makes
+	* the next item in the tree visible by making it the top item
+	* instead of making the desired item visible.  The fix is to
+	* detect the case when the client area is too small and make
+	* the desired visible item be the top item in the tree.
+	*/
+	if (OS.SendMessage (handle, OS.TVM_GETVISIBLECOUNT, 0, 0) == 0) {
+		OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_FIRSTVISIBLE, hItem);
+		OS.SendMessage (handle, OS.WM_HSCROLL, OS.SB_TOP ,0);
+	} else {
+		boolean scroll = true;
+		RECT itemRect = new RECT ();
+		itemRect.left = hItem;
+		if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, itemRect) != 0) {
+			RECT rect = new RECT ();
+			OS.GetClientRect (handle, rect);
+			POINT pt = new POINT ();
+			pt.x = itemRect.left;
+			pt.y = itemRect.top;
+			if (OS.PtInRect (rect, pt)) {
+				pt.y = itemRect.bottom;
+				if (OS.PtInRect (rect, pt)) scroll = false;
+			}
+		}
+		if (scroll) OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem);
+	}
+}
+
+/**
+ * Shows the item.  If the item is already showing in the receiver,
+ * this method simply returns.  Otherwise, the items are scrolled
+ * and expanded until the item is visible.
+ *
+ * @param item the item to be shown
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the item is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the item has been disposed</li>
+ * </ul>
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see Tree#showSelection()
+ */
+public void showItem (TreeItem item) {
+	checkWidget ();
+	if (item == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (item.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
+	showItem (item.handle);
+}
+
+/**
+ * Shows the selection.  If the selection is already showing in the receiver,
+ * this method simply returns.  Otherwise, the items are scrolled until
+ * the selection is visible.
+ *
+ * @exception SWTException <ul>
+ *    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
+ *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
+ * </ul>
+ *
+ * @see Tree#showItem(TreeItem)
+ */
+public void showSelection () {
+	checkWidget ();
+	int hItem = 0;
+	if ((style & SWT.SINGLE) != 0) {	
+		hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+		if (hItem == 0) return;
+		TVITEM tvItem = new TVITEM ();
+		tvItem.mask = OS.TVIF_STATE;
+		tvItem.hItem = hItem;
+		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+		if ((tvItem.state & OS.TVIS_SELECTED) == 0) return;
+	} else {
+		TVITEM tvItem = new TVITEM ();
+		tvItem.mask = OS.TVIF_STATE;
+		int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
+		OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);
+		int index = 0;
+		while (index <items.length) {
+			TreeItem item = items [index];
+			if (item != null) {
+				tvItem.hItem = item.handle;
+				OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+				if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
+					hItem = tvItem.hItem;
+					break;
+				}
+			}
+			index++;
+		}
+		OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
+	}
+	if (hItem != 0) showItem (hItem);
+}
+
+String toolTipText (NMTTDISPINFO hdr) {
+	int hwndToolTip = OS.SendMessage (handle, OS.TVM_GETTOOLTIPS, 0, 0);
+	if (hwndToolTip == hdr.hwndFrom && toolTipText != null) return "";
+	return super.toolTipText (hdr);
+}
+
+int widgetStyle () {
+	int bits = super.widgetStyle () | OS.TVS_SHOWSELALWAYS;
+	bits |= OS.TVS_LINESATROOT | OS.TVS_HASLINES | OS.TVS_HASBUTTONS;
+	/*
+	* This code is intentionally commented.  In future,
+	* FULL_SELECTION may be implemented for trees.
+	*/
+//	if ((style & SWT.FULL_SELECTION) != 0) {
+//		bits |= OS.TVS_FULLROWSELECT;
+//	} else {
+//		bits |= OS.TVS_HASLINES | OS.TVS_HASBUTTONS;
+//	}
+//	bits |= OS.TVS_NOTOOLTIPS;
+	return bits;
+}
+
+TCHAR windowClass () {
+	return TreeClass;
+}
+
+int windowProc () {
+	return TreeProc;
+}
+
+LRESULT WM_CHAR (int wParam, int lParam) {
+	LRESULT result = super.WM_CHAR (wParam, lParam);
+	if (result != null) return result;
+	/*
+	* Feature in Windows.  The tree control beeps
+	* in WM_CHAR when the search for the item that
+	* matches the key stroke fails.  This is the
+	* standard tree behavior but is unexpected when
+	* the key that was typed was ESC, CR or SPACE.
+	* The fix is to avoid calling the tree window
+	* proc in these cases.
+	*/
+	switch (wParam) {
+		case OS.VK_ESCAPE:
+		case OS.VK_RETURN:
+		case OS.VK_SPACE: return LRESULT.ZERO;
+	}
+	return result;
+}
+
+LRESULT WM_GETOBJECT (int wParam, int lParam) {
+	/*
+	* Ensure that there is an accessible object created for this
+	* control because support for checked item accessibility is
+	* temporarily implemented in the accessibility package.
+	*/
+	if ((style & SWT.CHECK) != 0) {
+		if (accessible == null) accessible = new_Accessible (this);
+	}
+	return super.WM_GETOBJECT (wParam, lParam);
+}
+
+LRESULT WM_KEYDOWN (int wParam, int lParam) {
+	LRESULT result = super.WM_KEYDOWN (wParam, lParam);
+	if (result != null) return result;
+	switch (wParam) {
+		case OS.VK_SPACE: {
+			int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+			if (hItem != 0) {
+				hAnchor = hItem;
+				OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hItem);
+				TVITEM tvItem = new TVITEM ();
+				tvItem.mask = OS.TVIF_STATE | OS.TVIF_PARAM;
+				tvItem.hItem = hItem;
+				if ((style & SWT.CHECK) != 0) {
+					tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
+					OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+					int state = tvItem.state >> 12;
+					if ((state & 0x1) != 0) {
+						state++;
+					} else  {
+						--state;
+					}
+					tvItem.state = state << 12;
+					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+				}
+				tvItem.stateMask = OS.TVIS_SELECTED;
+				OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+				if ((style & SWT.MULTI) != 0 && OS.GetKeyState (OS.VK_CONTROL) < 0) {
+					if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
+						tvItem.state &= ~OS.TVIS_SELECTED;
+					} else {
+						tvItem.state |= OS.TVIS_SELECTED;
+					}
+				} else {
+					tvItem.state |= OS.TVIS_SELECTED;
+				}
+				OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+				Event event = new Event ();
+				event.item = items [tvItem.lParam];
+				postEvent (SWT.Selection, event);
+				if ((style & SWT.CHECK) != 0) {
+					event = new Event ();
+					event.item = items [tvItem.lParam];
+					event.detail = SWT.CHECK;
+					postEvent (SWT.Selection, event);
+				}
+				return LRESULT.ZERO;
+			}
+			break;
+		}
+		case OS.VK_UP:
+		case OS.VK_DOWN:
+		case OS.VK_PRIOR:
+		case OS.VK_NEXT:
+		case OS.VK_HOME:
+		case OS.VK_END: {
+			if ((style & SWT.SINGLE) != 0) break;
+			if (OS.GetKeyState (OS.VK_SHIFT) < 0) {
+				int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+				if (hItem != 0) {
+					if (hAnchor == 0) hAnchor = hItem;
+					ignoreSelect = ignoreDeselect = true;
+					int code = callWindowProc (OS.WM_KEYDOWN, wParam, lParam);
+					ignoreSelect = ignoreDeselect = false;
+					int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+					TVITEM tvItem = new TVITEM ();
+					tvItem.mask = OS.TVIF_STATE;
+					tvItem.stateMask = OS.TVIS_SELECTED;
+					int hDeselectItem = hItem;					
+					RECT rect1 = new RECT ();
+					rect1.left = hAnchor;
+					OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
+					RECT rect2 = rect2 = new RECT ();
+					rect2.left = hDeselectItem;
+					OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
+					int flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE;
+					while (hDeselectItem != hAnchor) {
+						tvItem.hItem = hDeselectItem;
+						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+						hDeselectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hDeselectItem);
+					}
+					int hSelectItem = hAnchor;
+					rect1.left = hNewItem;
+					OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
+					rect2.left = hSelectItem;
+					OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
+					tvItem.state = OS.TVIS_SELECTED;
+					flags = rect1.top < rect2.top ? OS.TVGN_PREVIOUSVISIBLE : OS.TVGN_NEXTVISIBLE;
+					while (hSelectItem != hNewItem) {
+						tvItem.hItem = hSelectItem;
+						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+						hSelectItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hSelectItem);
+					}
+					tvItem.hItem = hNewItem;
+					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+					tvItem.mask = OS.TVIF_PARAM;
+					tvItem.hItem = hNewItem;
+					OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+					Event event = new Event ();
+					event.item = items [tvItem.lParam];
+					postEvent (SWT.Selection, event);
+					return new LRESULT (code);
+				}
+			}
+			if (OS.GetKeyState (OS.VK_CONTROL) < 0) {
+				int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+				if (hItem != 0) {
+					TVITEM tvItem = new TVITEM ();
+					tvItem.mask = OS.TVIF_STATE;
+					tvItem.stateMask = OS.TVIS_SELECTED;
+					tvItem.hItem = hItem;
+					OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+					boolean oldSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
+					int hNewItem = 0;
+					switch (wParam) {
+						case OS.VK_UP:
+							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_PREVIOUSVISIBLE, hItem);
+							break;
+						case OS.VK_DOWN:
+							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hItem);
+							break;
+						case OS.VK_HOME:
+							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_ROOT, 0);
+							break;
+						case OS.VK_PRIOR:
+							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
+							if (hNewItem == hItem) {
+								OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEUP, 0);
+								hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
+							}
+							break;
+						case OS.VK_NEXT:			
+							RECT rect = new RECT (), clientRect = new RECT ();
+							OS.GetClientRect (handle, clientRect);
+							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_FIRSTVISIBLE, 0);
+							do {
+								int hVisible = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_NEXTVISIBLE, hNewItem);
+								if (hVisible == 0) break;
+								rect.left = hVisible;
+								OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect);
+								if (rect.bottom > clientRect.bottom) break;
+								if ((hNewItem = hVisible) == hItem) {
+									OS.SendMessage (handle, OS.WM_VSCROLL, OS.SB_PAGEDOWN, 0);
+								}
+							} while (hNewItem != 0);
+							break;
+						case OS.VK_END:
+							hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_LASTVISIBLE, 0);
+							break;
+					}
+					if (hNewItem != 0) {
+						OS.SendMessage (handle, OS.TVM_ENSUREVISIBLE, 0, hNewItem);
+						tvItem.hItem = hNewItem;
+						OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+						boolean newSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
+						if (!newSelected && drawCount == 0) {
+							OS.UpdateWindow (handle);
+							OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
+							/*
+							* This code is intentionally commented.
+							*/
+//							OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
+						}
+						ignoreSelect = true;
+						OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, hNewItem);
+						ignoreSelect = false;
+						if (oldSelected) {
+							tvItem.state = OS.TVIS_SELECTED;
+							tvItem.hItem = hItem;
+							OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+						}
+						if (!newSelected) {
+							tvItem.state = 0;
+							tvItem.hItem = hNewItem;
+							OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+						}
+						if (!newSelected && drawCount == 0) {
+							RECT rect1 = new RECT (), rect2 = new RECT ();
+							rect1.left = hItem;  rect2.left = hNewItem;
+							OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
+							OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
+							/*
+							* This code is intentionally commented.
+							*/
+//							OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
+							OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
+							if (OS.IsWinCE) {
+								OS.InvalidateRect (handle, rect1, false);
+								OS.InvalidateRect (handle, rect2, false);
+								OS.UpdateWindow (handle);
+							} else {
+								int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE;
+								OS.RedrawWindow (handle, rect1, 0, flags);
+								OS.RedrawWindow (handle, rect2, 0, flags);
+							}
+						}
+						return LRESULT.ZERO;
+					}
+				}
+			}
+			int code = callWindowProc (OS.WM_KEYDOWN, wParam, lParam);
+			hAnchor = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+			return new LRESULT (code);
+		}
+	}
+	return result;
+}
+
+LRESULT WM_KILLFOCUS (int wParam, int lParam) {
+	LRESULT result = super.WM_KILLFOCUS (wParam, lParam);
+	if ((style & SWT.SINGLE) != 0) return result;
+	/*
+	* Feature in Windows.  When multiple item have
+	* the TVIS_SELECTED state, Windows redraws only
+	* the focused item in the color used to show the
+	* selection when the tree loses or gains focus.
+	* The fix is to force Windows to redraw all the
+	* visible items when focus is gained or lost.
+	*/
+	OS.InvalidateRect (handle, null, false);
+	return result;
+}
+
+LRESULT WM_LBUTTONDOWN (int wParam, int lParam) {
+	
+	/*
+	* Feature in Windows.  When a tree item is
+	* reselected, Windows does not issue a WM_NOTIFY.
+	* This is inconsistent with the list widget and
+	* other widgets in Windows.  The fix is to detect
+	* the case when an item is reselected and issue
+	* the notification.  The first part of this work
+	* around is to ensure that the user has selected
+	* an item.
+	*/
+	TVHITTESTINFO lpht = new TVHITTESTINFO ();
+	lpht.x = (short) (lParam & 0xFFFF);
+	lpht.y = (short) (lParam >> 16);
+	OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
+	if (lpht.hItem == 0 || (lpht.flags & OS.TVHT_ONITEM) == 0) {
+		sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
+		int code = callWindowProc (OS.WM_LBUTTONDOWN, wParam, lParam);
+		if (OS.GetCapture () != handle) OS.SetCapture (handle);
+		return new LRESULT (code);
+	}
+	
+	/* Look for check/uncheck */
+	if ((style & SWT.CHECK) != 0) {
+		if ((lpht.flags & OS.TVHT_ONITEMSTATEICON) != 0) {
+			TVITEM tvItem = new TVITEM ();
+			tvItem.hItem = lpht.hItem;
+			tvItem.mask = OS.TVIF_PARAM | OS.TVIF_STATE;	
+			tvItem.stateMask = OS.TVIS_STATEIMAGEMASK;
+			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+			int state = tvItem.state >> 12;
+			if ((state & 0x1) != 0) {
+				state++;
+			} else  {
+				--state;
+			}
+			tvItem.state = state << 12;
+			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+			Event event = new Event ();
+			event.item = items [tvItem.lParam];
+			event.detail = SWT.CHECK;
+			postEvent (SWT.Selection, event);
+			sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
+			if (OS.GetCapture () != handle) OS.SetCapture (handle);
+			return LRESULT.ZERO;
+		}
+	}
+
+	/* Get the selected state of the item under the mouse */
+	TVITEM tvItem = new TVITEM ();
+	tvItem.mask = OS.TVIF_STATE;
+	tvItem.stateMask = OS.TVIS_SELECTED;
+	boolean hittestSelected = false;
+	if ((style & SWT.MULTI) != 0) {
+		tvItem.hItem = lpht.hItem;
+		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+		hittestSelected = (tvItem.state & OS.TVIS_SELECTED) != 0;
+	}
+	
+	/* Get the selected state of the last selected item */
+	int hOldItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+	if ((style & SWT.MULTI) != 0) {
+		tvItem.hItem = hOldItem;
+		OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+
+		/* Check for CONTROL or drag selection */
+		if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) {
+			if (drawCount == 0) {
+				OS.UpdateWindow (handle);
+				OS.DefWindowProc (handle, OS.WM_SETREDRAW, 0, 0);
+				/*
+				* This code is intentionally commented.
+				*/
+//				OS.SendMessage (handle, OS.WM_SETREDRAW, 0, 0);
+			}
+		} else {
+			deselectAll ();
+		}
+	}
+
+	/* Do the selection */
+	sendMouseEvent (SWT.MouseDown, 1, OS.WM_LBUTTONDOWN, wParam, lParam);
+	dragStarted = false;
+	ignoreDeselect = ignoreSelect = true;
+	int code = callWindowProc (OS.WM_LBUTTONDOWN, wParam, lParam);
+	ignoreDeselect = ignoreSelect = false;
+	if (dragStarted && OS.GetCapture () != handle) OS.SetCapture (handle);
+	int hNewItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+
+	/*
+	* Feature in Windows.  When the old and new focused item
+	* are the same, Windows does not check to make sure that
+	* the item is actually selected, not just focused.  The
+	* fix is to force the item to draw selected by setting
+	* the state mask.  This is only necessary when the tree
+	* is single select.
+	*/
+	if ((style & SWT.SINGLE) != 0) {
+		if (hOldItem == hNewItem) {
+			tvItem.mask = OS.TVIF_STATE;
+			tvItem.state = OS.TVIS_SELECTED;
+			tvItem.stateMask = OS.TVIS_SELECTED;
+			tvItem.hItem = hNewItem;
+			OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+		}
+	}
+	
+	/* Reselect the last item that was unselected */
+	if ((style & SWT.MULTI) != 0) {
+		
+		/* Check for CONTROL and reselect the last item */
+		if (hittestSelected || (wParam & OS.MK_CONTROL) != 0) {
+			if (hOldItem == hNewItem && hOldItem == lpht.hItem) {
+				if ((wParam & OS.MK_CONTROL) != 0) {
+					tvItem.state ^= OS.TVIS_SELECTED;
+					if (dragStarted) tvItem.state = OS.TVIS_SELECTED;
+					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+				}
+			} else {
+				if ((tvItem.state & OS.TVIS_SELECTED) != 0) {
+					tvItem.state = OS.TVIS_SELECTED;
+					OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+				}
+				if ((wParam & OS.MK_CONTROL) != 0 && !dragStarted) {
+					if (hittestSelected) {
+						tvItem.state = 0;
+						tvItem.hItem = lpht.hItem;
+						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+					}
+				}
+			}
+			if (drawCount == 0) {
+				RECT rect1 = new RECT (), rect2 = new RECT ();
+				rect1.left = hOldItem;  rect2.left = hNewItem;
+				OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1);
+				OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
+				/*
+				* This code is intentionally commented.
+				*/
+//				OS.SendMessage (handle, OS.WM_SETREDRAW, 1, 0);
+				OS.DefWindowProc (handle, OS.WM_SETREDRAW, 1, 0);
+				if (OS.IsWinCE) {
+					OS.InvalidateRect (handle, rect1, false);
+					OS.InvalidateRect (handle, rect2, false);
+					OS.UpdateWindow (handle);
+				} else {
+					int flags = OS.RDW_UPDATENOW | OS.RDW_INVALIDATE;
+					OS.RedrawWindow (handle, rect1, 0, flags);
+					OS.RedrawWindow (handle, rect2, 0, flags);
+				} 
+			}
+		}
+
+		/* Check for SHIFT or normal select and delect/reselect items */
+		if ((wParam & OS.MK_CONTROL) == 0) {
+			if (!hittestSelected || !dragStarted) {
+				tvItem.state = 0;
+				int oldProc = OS.GetWindowLong (handle, OS.GWL_WNDPROC);
+				OS.SetWindowLong (handle, OS.GWL_WNDPROC, TreeProc);	
+				for (int i=0; i<items.length; i++) {
+					TreeItem item = items [i];
+					if (item != null && item.handle != hNewItem) {
+						tvItem.hItem = item.handle;
+						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+					}
+				}
+				tvItem.hItem = hNewItem;
+				tvItem.state = OS.TVIS_SELECTED;
+				OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+				OS.SetWindowLong (handle, OS.GWL_WNDPROC, oldProc);
+				if ((wParam & OS.MK_SHIFT) != 0) {
+					RECT rect1 = new RECT ();
+					if (hAnchor == 0) hAnchor = hNewItem;
+					rect1.left = hAnchor;
+					if (OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect1) != 0) {
+						RECT rect2 = rect2 = new RECT ();
+						rect2.left = hNewItem;
+						OS.SendMessage (handle, OS.TVM_GETITEMRECT, 1, rect2);
+						int flags = rect1.top < rect2.top ? OS.TVGN_NEXTVISIBLE : OS.TVGN_PREVIOUSVISIBLE;			
+						tvItem.state = OS.TVIS_SELECTED;
+						int hItem = tvItem.hItem = hAnchor;
+						OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+						while (hItem != hNewItem) {
+							tvItem.hItem = hItem;
+							OS.SendMessage (handle, OS.TVM_SETITEM, 0, tvItem);
+							hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, flags, hItem);
+						}
+					}
+				}
+			}
+		}
+	}
+	if ((wParam & OS.MK_SHIFT) == 0) hAnchor = hNewItem;
+			
+	/* Issue notification */
+	tvItem.hItem = hNewItem;
+	tvItem.mask = OS.TVIF_PARAM;
+	OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+	Event event = new Event ();
+	event.item = items [tvItem.lParam];
+	postEvent (SWT.Selection, event);
+	
+	/*
+	* Feature in Windows.  Inside WM_LBUTTONDOWN and WM_RBUTTONDOWN,
+	* the widget starts a modal loop to determine if the user wants
+	* to begin a drag/drop operation or marque select.  Unfortunately,
+	* this modal loop eats the corresponding mouse up.  The fix is to
+	* detect the cases when the modal loop has eaten the mouse up and
+	* issue a fake mouse up.
+	*/
+	if (dragStarted) {
+		postEvent (SWT.DragDetect);
+	} else {
+		sendMouseEvent (SWT.MouseUp, 1, OS.WM_LBUTTONUP, wParam, lParam);
+	}
+	dragStarted = false;
+	return new LRESULT (code);
+}
+
+LRESULT WM_RBUTTONDOWN (int wParam, int lParam) {
+	/*
+	* Feature in Windows.  The receiver uses WM_RBUTTONDOWN
+	* to initiate a drag/drop operation depending on how the
+	* user moves the mouse.  If the user clicks the right button,
+	* without moving the mouse, the tree consumes the corresponding
+	* WM_RBUTTONUP.  The fix is to avoid calling the window proc for
+	* the tree.
+	*/
+	sendMouseEvent (SWT.MouseDown, 3, OS.WM_RBUTTONDOWN, wParam, lParam);
+	/*
+	* This code is intentionally commented.
+	*/
+//	if (OS.GetCapture () != handle) OS.SetCapture (handle);
+	setFocus ();
+	
+	/*
+	* Feature in Windows.  When the user selects a tree item
+	* with the right mouse button, the item remains selected
+	* only as long as the user does not release or move the
+	* mouse.  As soon as this happens, the selection snaps
+	* back to the previous selection.  This behavior can be
+	* observed in the Explorer but is not instantly apparent
+	* because the Explorer explicity sets the selection when
+	* the user chooses a menu item.  If the user cancels the
+	* menu, the selection snaps back.  The fix is to avoid
+	* calling the window proc and do the selection ourselves.
+	* This behavior is consistent with the table.
+	*/
+	TVHITTESTINFO lpht = new TVHITTESTINFO ();
+	lpht.x = (short) (lParam & 0xFFFF);
+	lpht.y = (short) (lParam >> 16);
+	OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
+	if (lpht.hItem != 0 && (lpht.flags & (OS.TVHT_ONITEMICON | OS.TVHT_ONITEMLABEL)) != 0) {
+		if ((wParam & (OS.MK_CONTROL | OS.MK_SHIFT)) == 0) {
+			TVITEM tvItem = new TVITEM ();
+			tvItem.mask = OS.TVIF_STATE;
+			tvItem.stateMask = OS.TVIS_SELECTED;
+			tvItem.hItem = lpht.hItem;
+			OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+			if ((tvItem.state & OS.TVIS_SELECTED) == 0) {
+				ignoreSelect = true;
+				OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, 0);
+				ignoreSelect = false;
+				OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, lpht.hItem);
+			}
+		}
+	}
+	return LRESULT.ZERO;
+}
+
+LRESULT WM_SETFOCUS (int wParam, int lParam) {
+	LRESULT result = super.WM_SETFOCUS (wParam, lParam);
+	if ((style & SWT.SINGLE) != 0) return result;
+	/*
+	* Feature in Windows.  When multiple item have
+	* the TVIS_SELECTED state, Windows redraws only
+	* the focused item in the color used to show the
+	* selection when the tree loses or gains focus.
+	* The fix is to force Windows to redraw all the
+	* visible items when focus is gained or lost.
+	*/
+	OS.InvalidateRect (handle, null, false);
+	return result;
+}
+
+LRESULT WM_SYSCOLORCHANGE (int wParam, int lParam) {
+	LRESULT result = super.WM_SYSCOLORCHANGE (wParam, lParam);
+	if (result != null) return result;
+	if ((style & SWT.CHECK) != 0) setCheckboxImageList ();
+	return result;
+}
+
+LRESULT wmNotifyChild (int wParam, int lParam) {
+	NMHDR hdr = new NMHDR ();
+	OS.MoveMemory (hdr, lParam, NMHDR.sizeof);
+	int code = hdr.code;
+	switch (code) {
+		case OS.NM_CUSTOMDRAW: {
+			if (!customDraw) break;
+			NMTVCUSTOMDRAW nmcd = new NMTVCUSTOMDRAW ();
+			OS.MoveMemory (nmcd, lParam, NMTVCUSTOMDRAW.sizeof);		
+			switch (nmcd.dwDrawStage) {
+				case OS.CDDS_PREPAINT: return new LRESULT (OS.CDRF_NOTIFYITEMDRAW);
+				case OS.CDDS_ITEMPREPAINT:
+					TreeItem item = items [nmcd.lItemlParam];
+					/*
+					* Feature on Windows.  When a new tree item is inserted
+					* using TVM_INSERTITEM and the tree is using custom draw,
+					* a NM_CUSTOMDRAW is sent before TVM_INSERTITEM returns
+					* and before the item is added to the items array.  The
+					* fix is to check for null.
+					* 
+					* NOTE: This only happens on XP with the version 6.00 of
+					* COMCTL32.DLL,
+					*/
+					if (item == null) break;
+					TVITEM tvItem = new TVITEM ();
+					tvItem.mask = OS.TVIF_STATE;
+					tvItem.hItem = item.handle;
+					OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+					if ((tvItem.state & OS.TVIS_SELECTED) != 0) break;
+					int clrText = item.foreground, clrTextBk = item.background;
+					if (clrText == -1 && clrTextBk == -1) break;
+					nmcd.clrText = clrText == -1 ? getForegroundPixel () : clrText;
+					nmcd.clrTextBk = clrTextBk == -1 ? getBackgroundPixel () : clrTextBk;
+					OS.MoveMemory (lParam, nmcd, NMTVCUSTOMDRAW.sizeof);
+					return new LRESULT (OS.CDRF_NEWFONT);
+			}
+			break;
+		}
+		case OS.NM_DBLCLK:
+			int pos = OS.GetMessagePos ();
+			TVHITTESTINFO lpht = new TVHITTESTINFO ();
+			POINT pt = new POINT ();
+			pt.x = (short) (pos & 0xFFFF);
+			pt.y = (short) (pos >> 16);
+			OS.ScreenToClient (handle, pt);
+			lpht.x = pt.x;  lpht.y = pt.y;
+			OS.SendMessage (handle, OS.TVM_HITTEST, 0, lpht);
+			if ((lpht.flags & OS.TVHT_ONITEM) == 0) break;
+			// FALL THROUGH
+		case OS.NM_RETURN:
+		case OS.TVN_SELCHANGEDA:
+		case OS.TVN_SELCHANGEDW:
+			if (!ignoreSelect) {
+				TVITEM tvItem = null;
+				if (code == OS.TVN_SELCHANGED) {
+					tvItem = new TVITEM ();
+					int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
+					OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
+					hAnchor = tvItem.hItem;
+				} else {
+					int hItem = OS.SendMessage (handle, OS.TVM_GETNEXTITEM, OS.TVGN_CARET, 0);
+					if (hItem != 0) {
+						tvItem = new TVITEM ();
+						tvItem.hItem = hItem;
+						tvItem.mask = OS.TVIF_PARAM;
+						OS.SendMessage (handle, OS.TVM_GETITEM, 0, tvItem);
+					}
+				}
+				Event event = new Event ();
+				if (tvItem != null) {
+					event.item = items [tvItem.lParam];
+				}
+				if (code == OS.TVN_SELCHANGED) {
+					postEvent (SWT.Selection, event);
+				} else {
+					postEvent (SWT.DefaultSelection, event);
+				}
+			}
+			if (code == OS.NM_DBLCLK && hooks (SWT.DefaultSelection)) {
+				return LRESULT.ONE;
+			}
+			break;
+		case OS.TVN_SELCHANGINGA:
+		case OS.TVN_SELCHANGINGW:
+			if (!ignoreSelect && !ignoreDeselect) {
+				hAnchor = 0;
+				if ((style & SWT.MULTI) != 0) deselectAll ();
+			}
+			break;
+		case OS.TVN_ITEMEXPANDINGA:
+		case OS.TVN_ITEMEXPANDINGW:
+			if (!ignoreExpand) {
+				TVITEM tvItem = new TVITEM ();
+				int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
+				OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
+				int [] action = new int [1];
+				OS.MoveMemory (action, lParam + NMHDR.sizeof, 4);
+				Event event = new Event ();
+				event.item = items [tvItem.lParam];
+				/*
+				* It is possible (but unlikely), that application
+				* code could have disposed the widget in the expand
+				* or collapse event.  If this happens, end the
+				* processing of the Windows message by returning
+				* zero as the result of the window proc.
+				*/
+				if (action [0] == OS.TVE_EXPAND) {
+					sendEvent (SWT.Expand, event);
+					if (isDisposed ()) return LRESULT.ZERO;
+				}
+				if (action [0] == OS.TVE_COLLAPSE) {
+					sendEvent (SWT.Collapse, event);
+					if (isDisposed ()) return LRESULT.ZERO;
+				}
+			}
+			break;
+		case OS.TVN_BEGINDRAGA:
+		case OS.TVN_BEGINDRAGW:
+		case OS.TVN_BEGINRDRAGA:
+		case OS.TVN_BEGINRDRAGW:
+			TVITEM tvItem = new TVITEM ();
+			int offset = NMHDR.sizeof + 4 + TVITEM.sizeof;
+			OS.MoveMemory (tvItem, lParam + offset, TVITEM.sizeof);
+			if (tvItem.hItem != 0 && (tvItem.state & OS.TVIS_SELECTED) == 0) {
+				ignoreSelect = ignoreDeselect = true;
+				OS.SendMessage (handle, OS.TVM_SELECTITEM, OS.TVGN_CARET, tvItem.hItem);
+				ignoreSelect = ignoreDeselect = false;
+			}
+			dragStarted = true;
+			break;
+	}
+	return super.wmNotifyChild (wParam, lParam);
+}
+
+}