--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/Link.d	Mon Jan 28 04:47:28 2008 +0100
@@ -0,0 +1,968 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module dwt.widgets.Link;
+
+import dwt.widgets.Control;
+class Link : Control {
+}
+/++
+import dwt.DWT;
+import dwt.DWTException;
+import dwt.accessibility.ACC;
+import dwt.accessibility.Accessible;
+import dwt.accessibility.AccessibleAdapter;
+import dwt.accessibility.AccessibleControlAdapter;
+import dwt.accessibility.AccessibleControlEvent;
+import dwt.accessibility.AccessibleEvent;
+import dwt.events.SelectionEvent;
+import dwt.events.SelectionListener;
+import dwt.graphics.Color;
+import dwt.graphics.Font;
+import dwt.graphics.GC;
+import dwt.graphics.GCData;
+import dwt.graphics.Point;
+import dwt.graphics.RGB;
+import dwt.graphics.Rectangle;
+import dwt.graphics.TextLayout;
+import dwt.graphics.TextStyle;
+import dwt.internal.win32.LITEM;
+import dwt.internal.win32.LRESULT;
+import dwt.internal.win32.NMHDR;
+import dwt.internal.win32.NMLINK;
+import dwt.internal.win32.OS;
+import dwt.internal.win32.PAINTSTRUCT;
+import dwt.internal.win32.RECT;
+import dwt.internal.win32.TCHAR;
+import dwt.internal.win32.WNDCLASS;
+
+/**
+ * Instances of this class represent a selectable
+ * user interface object that displays a text with
+ * links.
+ * <p>
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>(none)</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>Selection</dd>
+ * </dl>
+ * <p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ *
+ * @since 3.1
+ */
+public class Link extends Control {
+    String text;
+    TextLayout layout;
+    Color linkColor, disabledColor;
+    Point [] offsets;
+    Point selection;
+    String [] ids;
+    int [] mnemonics;
+    int focusIndex, mouseDownIndex;
+    int font;
+    static final RGB LINK_FOREGROUND = new RGB (0, 51, 153);
+    static final int LinkProc;
+    static final TCHAR LinkClass = new TCHAR (0, OS.WC_LINK, true);
+    static {
+        if (OS.COMCTL32_MAJOR >= 6) {
+            WNDCLASS lpWndClass = new WNDCLASS ();
+            OS.GetClassInfo (0, LinkClass, lpWndClass);
+            LinkProc = lpWndClass.lpfnWndProc;
+        } else {
+            LinkProc = 0;
+        }
+    }
+
+/**
+ * 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>DWT</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>DWT</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 DWTException <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 Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public Link (Composite parent, int style) {
+    super (parent, style);
+}
+
+/**
+ * Adds the listener to the collection of listeners who will
+ * be notified when the control is selected by the user, by sending
+ * it one of the messages defined in the <code>SelectionListener</code>
+ * interface.
+ * <p>
+ * <code>widgetSelected</code> is called when the control is selected by the user.
+ * <code>widgetDefaultSelected</code> is not called.
+ * </p>
+ *
+ * @param listener the listener which should be notified
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the listener is null</li>
+ * </ul>
+ * @exception DWTException <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 is null) error (DWT.ERROR_NULL_ARGUMENT);
+    TypedListener typedListener = new TypedListener (listener);
+    addListener (DWT.Selection, typedListener);
+    addListener (DWT.DefaultSelection, typedListener);
+}
+
+int callWindowProc (int hwnd, int msg, int wParam, int lParam) {
+    if (handle is 0) return 0;
+    if (LinkProc !is 0) return OS.CallWindowProc (LinkProc, hwnd, msg, wParam, lParam);
+    return OS.DefWindowProc (hwnd, msg, wParam, lParam);
+}
+
+public Point computeSize (int wHint, int hHint, bool changed) {
+    checkWidget ();
+    if (wHint !is DWT.DEFAULT && wHint < 0) wHint = 0;
+    if (hHint !is DWT.DEFAULT && hHint < 0) hHint = 0;
+    int width, height;
+    if (OS.COMCTL32_MAJOR >= 6) {
+        int hDC = OS.GetDC (handle);
+        int newFont = OS.SendMessage (handle, OS.WM_GETFONT, 0, 0);
+        int oldFont = OS.SelectObject (hDC, newFont);
+        TCHAR buffer = new TCHAR (getCodePage (), parse (text), false);
+        RECT rect = new RECT ();
+        int flags = OS.DT_CALCRECT | OS.DT_NOPREFIX;
+        if (wHint !is DWT.DEFAULT) {
+            flags |= OS.DT_WORDBREAK;
+            rect.right = wHint;
+        }
+        OS.DrawText (hDC, buffer, buffer.length (), rect, flags);
+        width = rect.right - rect.left;
+        height = rect.bottom;
+        if (newFont !is 0) OS.SelectObject (hDC, oldFont);
+        OS.ReleaseDC (handle, hDC);
+    } else {
+        int layoutWidth = layout.getWidth ();
+        //TEMPORARY CODE
+        if (wHint is 0) {
+            layout.setWidth (1);
+            Rectangle rect = layout.getBounds ();
+            width = 0;
+            height = rect.height;
+        } else {
+            layout.setWidth (wHint);
+            Rectangle rect = layout.getBounds ();
+            width = rect.width;
+            height = rect.height;
+        }
+        layout.setWidth (layoutWidth);
+    }
+    if (wHint !is DWT.DEFAULT) width = wHint;
+    if (hHint !is DWT.DEFAULT) height = hHint;
+    int border = getBorderWidth ();
+    width += border * 2;
+    height += border * 2;
+    return new Point (width, height);
+}
+
+void createHandle () {
+    super.createHandle ();
+    state |= THEME_BACKGROUND;
+    if (OS.COMCTL32_MAJOR < 6) {
+        layout = new TextLayout (display);
+        if (!OS.IsWinCE && OS.WIN32_VERSION >= OS.VERSION (4, 10)) {
+            linkColor = Color.win32_new (display, OS.GetSysColor (OS.COLOR_HOTLIGHT));
+        } else {
+            linkColor = new Color (display, LINK_FOREGROUND);
+        }
+        disabledColor = Color.win32_new (display, OS.GetSysColor (OS.COLOR_GRAYTEXT));
+        offsets = new Point [0];
+        ids = new String [0];
+        mnemonics = new int [0];
+        selection = new Point (-1, -1);
+        focusIndex = mouseDownIndex = -1;
+    }
+}
+
+void createWidget () {
+    super.createWidget ();
+    text = "";
+    if (OS.COMCTL32_MAJOR < 6) {
+        if ((style & DWT.MIRRORED) !is 0) {
+            layout.setOrientation (DWT.RIGHT_TO_LEFT);
+        }
+        initAccessible ();
+    }
+}
+
+void drawWidget (GC gc, RECT rect) {
+    drawBackground (gc.handle, rect);
+    int selStart = selection.x;
+    int selEnd = selection.y;
+    if (selStart > selEnd) {
+        selStart = selection.y;
+        selEnd = selection.x;
+    }
+    // temporary code to disable text selection
+    selStart = selEnd = -1;
+    if (!OS.IsWindowEnabled (handle)) gc.setForeground (disabledColor);
+    layout.draw (gc, 0, 0, selStart, selEnd, null, null);
+    if (hasFocus () && focusIndex !is -1) {
+        Rectangle [] rects = getRectangles (focusIndex);
+        for (int i = 0; i < rects.length; i++) {
+            Rectangle rectangle = rects [i];
+            gc.drawFocus (rectangle.x, rectangle.y, rectangle.width, rectangle.height);
+        }
+    }
+    if (hooks (DWT.Paint) || filters (DWT.Paint)) {
+        Event event = new Event ();
+        event.gc = gc;
+        event.x = rect.left;
+        event.y = rect.top;
+        event.width = rect.right - rect.left;
+        event.height = rect.bottom - rect.top;
+        sendEvent (DWT.Paint, event);
+        event.gc = null;
+    }
+}
+
+void enableWidget (bool enabled) {
+    if (OS.COMCTL32_MAJOR >= 6) {
+        LITEM item = new LITEM ();
+        item.mask = OS.LIF_ITEMINDEX | OS.LIF_STATE;
+        item.stateMask = OS.LIS_ENABLED;
+        item.state = enabled ? OS.LIS_ENABLED : 0;
+        while (OS.SendMessage (handle, OS.LM_SETITEM, 0, item) !is 0) {
+            item.iLink++;
+        }
+    } else {
+        TextStyle linkStyle = new TextStyle (null, enabled ? linkColor : disabledColor, null);
+        linkStyle.underline = true;
+        for (int i = 0; i < offsets.length; i++) {
+            Point point = offsets [i];
+            layout.setStyle (linkStyle, point.x, point.y);
+        }
+        redraw ();
+    }
+    /*
+    * Feature in Windows.  For some reason, setting
+    * LIS_ENABLED state using LM_SETITEM causes the
+    * SysLink to become enabled.  To be specific,
+    * calling IsWindowEnabled() returns true.  The
+    * fix is disable the SysLink after LM_SETITEM.
+    */
+    super.enableWidget (enabled);
+}
+
+void initAccessible () {
+    Accessible accessible = getAccessible ();
+    accessible.addAccessibleListener (new AccessibleAdapter () {
+        public void getName (AccessibleEvent e) {
+            e.result = parse (text);
+        }
+    });
+
+    accessible.addAccessibleControlListener (new AccessibleControlAdapter () {
+        public void getChildAtPoint (AccessibleControlEvent e) {
+            e.childID = ACC.CHILDID_SELF;
+        }
+
+        public void getLocation (AccessibleControlEvent e) {
+            Rectangle rect = display.map (getParent (), null, getBounds ());
+            e.x = rect.x;
+            e.y = rect.y;
+            e.width = rect.width;
+            e.height = rect.height;
+        }
+
+        public void getChildCount (AccessibleControlEvent e) {
+            e.detail = 0;
+        }
+
+        public void getRole (AccessibleControlEvent e) {
+            e.detail = ACC.ROLE_LINK;
+        }
+
+        public void getState (AccessibleControlEvent e) {
+            e.detail = ACC.STATE_FOCUSABLE;
+            if (hasFocus ()) e.detail |= ACC.STATE_FOCUSED;
+        }
+
+        public void getDefaultAction (AccessibleControlEvent e) {
+            e.result = DWT.getMessage ("SWT_Press"); //$NON-NLS-1$
+        }
+
+        public void getSelection (AccessibleControlEvent e) {
+            if (hasFocus ()) e.childID = ACC.CHILDID_SELF;
+        }
+
+        public void getFocus (AccessibleControlEvent e) {
+            if (hasFocus ()) e.childID = ACC.CHILDID_SELF;
+        }
+    });
+}
+
+String getNameText () {
+    return getText ();
+}
+
+Rectangle [] getRectangles (int linkIndex) {
+    int lineCount = layout.getLineCount ();
+    Rectangle [] rects = new Rectangle [lineCount];
+    int [] lineOffsets = layout.getLineOffsets ();
+    Point point = offsets [linkIndex];
+    int lineStart = 1;
+    while (point.x > lineOffsets [lineStart]) lineStart++;
+    int lineEnd = 1;
+    while (point.y > lineOffsets [lineEnd]) lineEnd++;
+    int index = 0;
+    if (lineStart is lineEnd) {
+        rects [index++] = layout.getBounds (point.x, point.y);
+    } else {
+        rects [index++] = layout.getBounds (point.x, lineOffsets [lineStart]-1);
+        rects [index++] = layout.getBounds (lineOffsets [lineEnd-1], point.y);
+        if (lineEnd - lineStart > 1) {
+            for (int i = lineStart; i < lineEnd - 1; i++) {
+                rects [index++] = layout.getLineBounds (i);
+            }
+        }
+    }
+    if (rects.length !is index) {
+        Rectangle [] tmp = new Rectangle [index];
+        System.arraycopy (rects, 0, tmp, 0, index);
+        rects = tmp;
+    }
+    return rects;
+}
+
+/**
+ * Returns the receiver's text, which will be an empty
+ * string if it has never been set.
+ *
+ * @return the receiver's text
+ *
+ * @exception DWTException <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 String getText () {
+    checkWidget ();
+    return text;
+}
+
+String parse (String string) {
+    int length = string.length ();
+    offsets = new Point [length / 4];
+    ids = new String [length / 4];
+    mnemonics = new int [length / 4 + 1];
+    StringBuffer result = new StringBuffer ();
+    char [] buffer = new char [length];
+    string.getChars (0, string.length (), buffer, 0);
+    int index = 0, state = 0, linkIndex = 0;
+    int start = 0, tagStart = 0, linkStart = 0, endtagStart = 0, refStart = 0;
+    while (index < length) {
+        char c = Character.toLowerCase (buffer [index]);
+        switch (state) {
+            case 0:
+                if (c is '<') {
+                    tagStart = index;
+                    state++;
+                }
+                break;
+            case 1:
+                if (c is 'a') state++;
+                break;
+            case 2:
+                switch (c) {
+                    case 'h':
+                        state = 7;
+                        break;
+                    case '>':
+                        linkStart = index  + 1;
+                        state++;
+                        break;
+                    default:
+                        if (Character.isWhitespace(c)) break;
+                        else state = 13;
+                }
+                break;
+            case 3:
+                if (c is '<') {
+                    endtagStart = index;
+                    state++;
+                }
+                break;
+            case 4:
+                state = c is '/' ? state + 1 : 3;
+                break;
+            case 5:
+                state = c is 'a' ? state + 1 : 3;
+                break;
+            case 6:
+                if (c is '>') {
+                    mnemonics [linkIndex] = parseMnemonics (buffer, start, tagStart, result);
+                    int offset = result.length ();
+                    parseMnemonics (buffer, linkStart, endtagStart, result);
+                    offsets [linkIndex] = new Point (offset, result.length () - 1);
+                    if (ids [linkIndex] is null) {
+                        ids [linkIndex] = new String (buffer, linkStart, endtagStart - linkStart);
+                    }
+                    linkIndex++;
+                    start = tagStart = linkStart = endtagStart = refStart = index + 1;
+                    state = 0;
+                } else {
+                    state = 3;
+                }
+                break;
+            case 7:
+                state = c is 'r' ? state + 1 : 0;
+                break;
+            case 8:
+                state = c is 'e' ? state + 1 : 0;
+                break;
+            case 9:
+                state = c is 'f' ? state + 1 : 0;
+                break;
+            case 10:
+                state = c is '=' ? state + 1 : 0;
+                break;
+            case 11:
+                if (c is '"') {
+                    state++;
+                    refStart = index + 1;
+                } else {
+                    state = 0;
+                }
+                break;
+            case 12:
+                if (c is '"') {
+                    ids[linkIndex] = new String (buffer, refStart, index - refStart);
+                    state = 2;
+                }
+                break;
+            case 13:
+                if (Character.isWhitespace (c)) {
+                    state = 0;
+                } else if (c is '='){
+                    state++;
+                }
+                break;
+            case 14:
+                state = c is '"' ? state + 1 : 0;
+                break;
+            case 15:
+                if (c is '"') state = 2;
+                break;
+            default:
+                state = 0;
+                break;
+        }
+        index++;
+    }
+    if (start < length) {
+        int tmp = parseMnemonics (buffer, start, tagStart, result);
+        int mnemonic = parseMnemonics (buffer, linkStart, index, result);
+        if (mnemonic is -1) mnemonic = tmp;
+        mnemonics [linkIndex] = mnemonic;
+    } else {
+        mnemonics [linkIndex] = -1;
+    }
+    if (offsets.length !is linkIndex) {
+        Point [] newOffsets = new Point [linkIndex];
+        System.arraycopy (offsets, 0, newOffsets, 0, linkIndex);
+        offsets = newOffsets;
+        String [] newIDs = new String [linkIndex];
+        System.arraycopy (ids, 0, newIDs, 0, linkIndex);
+        ids = newIDs;
+        int [] newMnemonics = new int [linkIndex + 1];
+        System.arraycopy (mnemonics, 0, newMnemonics, 0, linkIndex + 1);
+        mnemonics = newMnemonics;
+    }
+    return result.toString ();
+}
+
+int parseMnemonics (char[] buffer, int start, int end, StringBuffer result) {
+    int mnemonic = -1, index = start;
+    while (index < end) {
+        if (buffer [index] is '&') {
+            if (index + 1 < end && buffer [index + 1] is '&') {
+                result.append (buffer [index]);
+                index++;
+            } else {
+                mnemonic = result.length();
+            }
+        } else {
+            result.append (buffer [index]);
+        }
+        index++;
+    }
+    return mnemonic;
+}
+
+void releaseWidget () {
+    super.releaseWidget ();
+    if (layout !is null) layout.dispose ();
+    layout = null;
+    if (linkColor !is null) linkColor.dispose ();
+    linkColor = null;
+    disabledColor = null;
+    offsets = null;
+    ids = null;
+    mnemonics = null;
+    text = null;
+}
+
+/**
+ * Removes the listener from the collection of listeners who will
+ * be notified when the control is selected by the user.
+ *
+ * @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 DWTException <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 is null) error (DWT.ERROR_NULL_ARGUMENT);
+    if (eventTable is null) return;
+    eventTable.unhook (DWT.Selection, listener);
+    eventTable.unhook (DWT.DefaultSelection, listener);
+}
+
+/**
+ * Sets the receiver's text.
+ * <p>
+ * The string can contain both regular text and hyperlinks.  A hyperlink
+ * is delimited by an anchor tag, &lt;A&gt; and &lt;/A&gt;.  Within an
+ * anchor, a single HREF attribute is supported.  When a hyperlink is
+ * selected, the text field of the selection event contains either the
+ * text of the hyperlink or the value of its HREF, if one was specified.
+ * In the rare case of identical hyperlinks within the same string, the
+ * HREF tag can be used to distinguish between them.  The string may
+ * include the mnemonic character and line delimiters.
+ * </p>
+ *
+ * @param string the new text
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the text is null</li>
+ * </ul>
+ * @exception DWTException <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 setText (String string) {
+    checkWidget ();
+    if (string is null) error (DWT.ERROR_NULL_ARGUMENT);
+    if (string.equals (text)) return;
+    text = string;
+    if (OS.COMCTL32_MAJOR >= 6) {
+        bool enabled = OS.IsWindowEnabled (handle);
+        /*
+        * Bug in Windows.  For some reason, when SetWindowText()
+        * is used to set the text of a link control to the empty
+        * string, the old text remains.  The fix is to set the
+        * text to a space instead.
+        */
+        if (string.length () is 0) string = " ";  //$NON-NLS-1$
+        TCHAR buffer = new TCHAR (getCodePage (), string, true);
+        OS.SetWindowText (handle, buffer);
+        parse (text);
+        enableWidget (enabled);
+    } else {
+        layout.setText (parse (text));
+        focusIndex = offsets.length > 0 ? 0 : -1;
+        selection.x = selection.y = -1;
+        int bits = OS.GetWindowLong (handle, OS.GWL_STYLE);
+        if (offsets.length > 0) {
+            bits |= OS.WS_TABSTOP;
+        } else {
+            bits &= ~OS.WS_TABSTOP;
+        }
+        OS.SetWindowLong (handle, OS.GWL_STYLE, bits);
+        bool enabled = OS.IsWindowEnabled (handle);
+        TextStyle linkStyle = new TextStyle (null, enabled ? linkColor : disabledColor, null);
+        linkStyle.underline = true;
+        for (int i = 0; i < offsets.length; i++) {
+            Point point = offsets [i];
+            layout.setStyle (linkStyle, point.x, point.y);
+        }
+        TextStyle mnemonicStyle = new TextStyle (null, null, null);
+        mnemonicStyle.underline = true;
+        for (int i = 0; i < mnemonics.length; i++) {
+            int mnemonic  = mnemonics [i];
+            if (mnemonic !is -1) {
+                layout.setStyle (mnemonicStyle, mnemonic, mnemonic);
+            }
+        }
+        redraw ();
+    }
+}
+
+int widgetStyle () {
+    int bits = super.widgetStyle ();
+    return bits | OS.WS_TABSTOP;
+}
+
+TCHAR windowClass () {
+    return OS.COMCTL32_MAJOR >= 6 ? LinkClass : display.windowClass;
+}
+
+int windowProc () {
+    return LinkProc !is 0 ? LinkProc : display.windowProc;
+}
+
+LRESULT WM_CHAR (int wParam, int lParam) {
+    LRESULT result = super.WM_CHAR (wParam, lParam);
+    if (result !is null) return result;
+    if (OS.COMCTL32_MAJOR < 6) {
+        if (focusIndex is -1) return result;
+        switch (wParam) {
+            case ' ':
+            case DWT.CR:
+                Event event = new Event ();
+                event.text = ids [focusIndex];
+                sendEvent (DWT.Selection, event);
+                break;
+            case DWT.TAB:
+                bool next = OS.GetKeyState (OS.VK_SHIFT) >= 0;
+                if (next) {
+                    if (focusIndex < offsets.length - 1) {
+                        focusIndex++;
+                        redraw ();
+                    }
+                } else {
+                    if (focusIndex > 0) {
+                        focusIndex--;
+                        redraw ();
+                    }
+                }
+                break;
+        }
+    } else {
+        switch (wParam) {
+            case ' ':
+            case DWT.CR:
+            case DWT.TAB:
+                /*
+                * NOTE: Call the window proc with WM_KEYDOWN rather than WM_CHAR
+                * so that the key that was ignored during WM_KEYDOWN is processed.
+                * This allows the application to cancel an operation that is normally
+                * performed in WM_KEYDOWN from WM_CHAR.
+                */
+                int code = callWindowProc (handle, OS.WM_KEYDOWN, wParam, lParam);
+                return new LRESULT (code);
+        }
+
+    }
+    return result;
+}
+
+LRESULT WM_GETDLGCODE (int wParam, int lParam) {
+    LRESULT result = super.WM_GETDLGCODE (wParam, lParam);
+    if (result !is null) return result;
+    int index, count, code = 0;
+    if (OS.COMCTL32_MAJOR >= 6) {
+        LITEM item = new LITEM ();
+        item.mask = OS.LIF_ITEMINDEX | OS.LIF_STATE;
+        item.stateMask = OS.LIS_FOCUSED;
+        index = 0;
+        while (OS.SendMessage (handle, OS.LM_GETITEM, 0, item) !is 0) {
+            if ((item.state & OS.LIS_FOCUSED) !is 0) {
+                index = item.iLink;
+            }
+            item.iLink++;
+        }
+        count = item.iLink;
+        code = callWindowProc (handle, OS.WM_GETDLGCODE, wParam, lParam);
+    } else {
+        index = focusIndex;
+        count = offsets.length;
+    }
+    if (count is 0) {
+        return new LRESULT (code | OS.DLGC_STATIC);
+    }
+    bool next = OS.GetKeyState (OS.VK_SHIFT) >= 0;
+    if (next && index < count - 1) {
+        return new LRESULT (code | OS.DLGC_WANTTAB);
+    }
+    if (!next && index > 0) {
+        return new LRESULT (code | OS.DLGC_WANTTAB);
+    }
+    return result;
+}
+
+LRESULT WM_GETFONT (int wParam, int lParam) {
+    LRESULT result = super.WM_GETFONT (wParam, lParam);
+    if (result !is null) return result;
+    int code = callWindowProc (handle, OS.WM_GETFONT, wParam, lParam);
+    if (code !is 0) return new LRESULT (code);
+    if (font is 0) font = defaultFont ();
+    return new LRESULT (font);
+}
+
+LRESULT WM_KEYDOWN (int wParam, int lParam) {
+    LRESULT result = super.WM_KEYDOWN (wParam, lParam);
+    if (result !is null) return result;
+    if (OS.COMCTL32_MAJOR >= 6) {
+        switch (wParam) {
+            case OS.VK_SPACE:
+            case OS.VK_RETURN:
+            case OS.VK_TAB:
+                /*
+                * Ensure that the window proc does not process VK_SPACE,
+                * VK_RETURN or VK_TAB so that it can be handled in WM_CHAR.
+                * This allows the application to cancel an operation that
+                * is normally performed in WM_KEYDOWN from WM_CHAR.
+                */
+                return LRESULT.ZERO;
+        }
+    }
+    return result;
+}
+
+LRESULT WM_KILLFOCUS (int wParam, int lParam) {
+    LRESULT result = super.WM_KILLFOCUS (wParam, lParam);
+    if (OS.COMCTL32_MAJOR < 6) redraw ();
+    return result;
+}
+
+LRESULT WM_LBUTTONDOWN (int wParam, int lParam) {
+    LRESULT result = super.WM_LBUTTONDOWN (wParam, lParam);
+    if (result is LRESULT.ZERO) return result;
+    if (OS.COMCTL32_MAJOR < 6) {
+        if (focusIndex !is -1) setFocus ();
+        int x = lParam & 0xFFFF;
+        int y = lParam >> 16;
+        int offset = layout.getOffset (x, y, null);
+        int oldSelectionX = selection.x;
+        int oldSelectionY = selection.y;
+        selection.x = offset;
+        selection.y = -1;
+        if (oldSelectionX !is -1 && oldSelectionY !is -1) {
+            if (oldSelectionX > oldSelectionY) {
+                int temp = oldSelectionX;
+                oldSelectionX = oldSelectionY;
+                oldSelectionY = temp;
+            }
+            Rectangle rect = layout.getBounds (oldSelectionX, oldSelectionY);
+            redraw (rect.x, rect.y, rect.width, rect.height, false);
+        }
+        for (int j = 0; j < offsets.length; j++) {
+            Rectangle [] rects = getRectangles (j);
+            for (int i = 0; i < rects.length; i++) {
+                Rectangle rect = rects [i];
+                if (rect.contains (x, y)) {
+                    if (j !is focusIndex) {
+                        redraw ();
+                    }
+                    focusIndex = mouseDownIndex = j;
+                    return result;
+                }
+            }
+        }
+    }
+    return result;
+}
+
+LRESULT WM_LBUTTONUP (int wParam, int lParam) {
+    LRESULT result = super.WM_LBUTTONUP (wParam, lParam);
+    if (result is LRESULT.ZERO) return result;
+    if (OS.COMCTL32_MAJOR < 6) {
+        if (mouseDownIndex is -1) return result;
+        int x = lParam & 0xFFFF;
+        int y = lParam >> 16;
+        Rectangle [] rects = getRectangles (mouseDownIndex);
+        for (int i = 0; i < rects.length; i++) {
+            Rectangle rect = rects [i];
+            if (rect.contains (x, y)) {
+                Event event = new Event ();
+                event.text = ids [mouseDownIndex];
+                sendEvent (DWT.Selection, event);
+                break;
+            }
+        }
+    }
+    mouseDownIndex = -1;
+    return result;
+}
+
+LRESULT WM_MOUSEMOVE (int wParam, int lParam) {
+    LRESULT result = super.WM_MOUSEMOVE (wParam, lParam);
+    if (OS.COMCTL32_MAJOR < 6) {
+        int x = lParam & 0xFFFF;
+        int y = lParam >> 16;
+        if (OS.GetKeyState (OS.VK_LBUTTON) < 0) {
+            int oldSelection = selection.y;
+            selection.y = layout.getOffset (x, y, null);
+            if (selection.y !is oldSelection) {
+                int newSelection = selection.y;
+                if (oldSelection > newSelection) {
+                    int temp = oldSelection;
+                    oldSelection = newSelection;
+                    newSelection = temp;
+                }
+                Rectangle rect = layout.getBounds (oldSelection, newSelection);
+                redraw (rect.x, rect.y, rect.width, rect.height, false);
+            }
+        } else {
+            for (int j = 0; j < offsets.length; j++) {
+                Rectangle [] rects = getRectangles (j);
+                for (int i = 0; i < rects.length; i++) {
+                    Rectangle rect = rects [i];
+                    if (rect.contains (x, y)) {
+                        setCursor (display.getSystemCursor (DWT.CURSOR_HAND));
+                        return result;
+                    }
+                }
+            }
+            setCursor (null);
+        }
+    }
+    return result;
+}
+
+LRESULT WM_PAINT (int wParam, int lParam) {
+    if (OS.COMCTL32_MAJOR >= 6) {
+        return super.WM_PAINT (wParam, lParam);
+    }
+    PAINTSTRUCT ps = new PAINTSTRUCT ();
+    GCData data = new GCData ();
+    data.ps = ps;
+    data.hwnd = handle;
+    GC gc = new_GC (data);
+    if (gc !is null) {
+        int width = ps.right - ps.left;
+        int height = ps.bottom - ps.top;
+        if (width !is 0 && height !is 0) {
+            RECT rect = new RECT ();
+            OS.SetRect (rect, ps.left, ps.top, ps.right, ps.bottom);
+            drawWidget (gc, rect);
+        }
+        gc.dispose ();
+    }
+    return LRESULT.ZERO;
+}
+
+LRESULT WM_PRINTCLIENT (int wParam, int lParam) {
+    LRESULT result = super.WM_PRINTCLIENT (wParam, lParam);
+    if (OS.COMCTL32_MAJOR < 6) {
+        RECT rect = new RECT ();
+        OS.GetClientRect (handle, rect);
+        GCData data = new GCData ();
+        data.device = display;
+        data.foreground = getForegroundPixel ();
+        GC gc = GC.win32_new (wParam, data);
+        drawWidget (gc, rect);
+        gc.dispose ();
+    }
+    return result;
+}
+
+LRESULT WM_SETFOCUS (int wParam, int lParam) {
+    LRESULT result = super.WM_SETFOCUS (wParam, lParam);
+    if (OS.COMCTL32_MAJOR < 6) redraw ();
+    return result;
+}
+
+LRESULT WM_SETFONT (int wParam, int lParam) {
+    if (OS.COMCTL32_MAJOR < 6) {
+        layout.setFont (Font.win32_new (display, wParam));
+    }
+    if (lParam !is 0) OS.InvalidateRect (handle, null, true);
+    return super.WM_SETFONT (font = wParam, lParam);
+}
+
+LRESULT WM_SIZE (int wParam, int lParam) {
+    LRESULT result = super.WM_SIZE (wParam, lParam);
+    if (OS.COMCTL32_MAJOR < 6) {
+        RECT rect = new RECT ();
+        OS.GetClientRect (handle, rect);
+        layout.setWidth (rect.right > 0 ? rect.right : -1);
+        redraw ();
+    }
+    return result;
+}
+
+LRESULT wmColorChild (int wParam, int lParam) {
+    LRESULT result = super.wmColorChild (wParam, lParam);
+    /*
+    * Feature in Windows.  When a SysLink is disabled, it does
+    * not gray out the non-link portion of the text.  The fix
+    * is to set the text color to the system gray color.
+    */
+    if (OS.COMCTL32_MAJOR >= 6) {
+        if (!OS.IsWindowEnabled (handle)) {
+            OS.SetTextColor (wParam, OS.GetSysColor (OS.COLOR_GRAYTEXT));
+            if (result is null) {
+                int backPixel = getBackgroundPixel ();
+                OS.SetBkColor (wParam, backPixel);
+                int hBrush = findBrush (backPixel, OS.BS_SOLID);
+                return new LRESULT (hBrush);
+            }
+        }
+    }
+    return result;
+}
+
+LRESULT wmNotifyChild (NMHDR hdr, int wParam, int lParam) {
+    if (OS.COMCTL32_MAJOR >= 6) {
+        switch (hdr.code) {
+            case OS.NM_RETURN:
+            case OS.NM_CLICK:
+                NMLINK item = new NMLINK ();
+                OS.MoveMemory (item, lParam, NMLINK.sizeof);
+                Event event = new Event ();
+                event.text = ids [item.iLink];
+                sendEvent (DWT.Selection, event);
+                break;
+        }
+    }
+    return super.wmNotifyChild (hdr, wParam, lParam);
+}
+}
+++/