changeset 75:a7afc89b7afe

ToolBar and ToolItem
author Frank Benoit <benoit@tionex.de>
date Tue, 15 Jan 2008 15:11:06 +0100
parents d014d6f9eeab
children 8846d8f76363
files dwt/widgets/ToolBar.d dwt/widgets/ToolItem.d
diffstat 2 files changed, 1507 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/ToolBar.d	Tue Jan 15 15:11:06 2008 +0100
@@ -0,0 +1,465 @@
+/*******************************************************************************
+ * 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
+ *******************************************************************************/
+module dwt.widgets.ToolBar;
+
+
+
+import dwt.DWT;
+import dwt.DWTException;
+import dwt.graphics.Point;
+import dwt.internal.gtk.OS;
+import dwt.widgets.ToolItem;
+import dwt.widgets.Composite;
+import dwt.widgets.ImageList;
+import dwt.widgets.Shell;
+import dwt.widgets.Decorations;
+import dwt.widgets.Control;
+import dwt.widgets.Menu;
+import dwt.widgets.Widget;
+import dwt.widgets.Event;
+
+/**
+ * Instances of this class support the layout of selectable
+ * tool bar items.
+ * <p>
+ * The item children that may be added to instances of this class
+ * must be of type <code>ToolItem</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>FLAT, WRAP, RIGHT, HORIZONTAL, VERTICAL, SHADOW_OUT</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>(none)</dd>
+ * </dl>
+ * <p>
+ * Note: Only one of the styles HORIZONTAL and VERTICAL may be specified.
+ * </p><p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ */
+public class ToolBar : Composite {
+    ToolItem lastFocus;
+    ImageList imageList;
+
+/**
+ * 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 DWT#FLAT
+ * @see DWT#WRAP
+ * @see DWT#RIGHT
+ * @see DWT#HORIZONTAL
+ * @see DWT#SHADOW_OUT
+ * @see DWT#VERTICAL
+ * @see Widget#checkSubclass()
+ * @see Widget#getStyle()
+ */
+public this (Composite parent, int style) {
+    super (parent, checkStyle (style));
+    /*
+    * Ensure that either of HORIZONTAL or VERTICAL is set.
+    * NOTE: HORIZONTAL and VERTICAL have the same values
+    * as H_SCROLL and V_SCROLL so it is necessary to first
+    * clear these bits to avoid scroll bars and then reset
+    * the bits using the original style supplied by the
+    * programmer.
+    */
+    if ((style & DWT.VERTICAL) !is 0) {
+        this.style |= DWT.VERTICAL;
+    } else {
+        this.style |= DWT.HORIZONTAL;
+    }
+    int orientation = (style & DWT.VERTICAL) !is 0 ? OS.GTK_ORIENTATION_VERTICAL : OS.GTK_ORIENTATION_HORIZONTAL;
+    OS.gtk_toolbar_set_orientation (handle, orientation);
+}
+
+static int checkStyle (int style) {
+    /*
+    * Feature in GTK.  It is not possible to create
+    * a toolbar that wraps.  Therefore, no matter what
+    * style bits are specified, clear the WRAP bits so
+    * that the style matches the behavior.
+    */
+    if ((style & DWT.WRAP) !is 0) style &= ~DWT.WRAP;
+    /*
+    * Even though it is legal to create this widget
+    * with scroll bars, they serve no useful purpose
+    * because they do not automatically scroll the
+    * widget's client area.  The fix is to clear
+    * the DWT style.
+    */
+    return style & ~(DWT.H_SCROLL | DWT.V_SCROLL);
+}
+
+protected void checkSubclass () {
+    if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS);
+}
+
+void createHandle (int index) {
+    state |= HANDLE | THEME_BACKGROUND;
+    fixedHandle = cast(GtkWidget*)OS.g_object_new (display.gtk_fixed_get_type (), null);
+    if (fixedHandle is null) error (DWT.ERROR_NO_HANDLES);
+    OS.gtk_fixed_set_has_window (fixedHandle, true);
+    handle = cast(GtkWidget*)OS.gtk_toolbar_new ();
+    if (handle is null) error (DWT.ERROR_NO_HANDLES);
+    OS.gtk_container_add (fixedHandle, handle);
+    if ((style & DWT.FLAT) !is 0) {
+        OS.gtk_widget_set_name (handle, "swt-toolbar-flat".ptr );
+    }
+}
+
+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;
+    return computeNativeSize (handle, wHint, hHint, changed);
+}
+
+GtkWidget* eventHandle () {
+    return fixedHandle;
+}
+
+GtkWidget* enterExitHandle() {
+    return handle;
+}
+
+void fixChildren (Shell newShell, Shell oldShell, Decorations newDecorations, Decorations oldDecorations, Menu [] menus) {
+    super.fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus);
+    ToolItem [] items = getItems ();
+    if (toolTipText is null) {
+        for (int i = 0; i < items.length; i++) {
+            ToolItem item = items [i];
+            if (item.toolTipText !is null) {
+                item.setToolTipText(oldShell, null);
+                item.setToolTipText(newShell, item.toolTipText);
+            }
+        }
+    }
+}
+
+override bool forceFocus (GtkWidget* focusHandle) {
+    if (lastFocus !is null && lastFocus.setFocus ()) return true;
+    ToolItem [] items = getItems ();
+    for (int i = 0; i < items.length; i++) {
+        ToolItem item = items [i];
+        if (item.setFocus ()) return true;
+    }
+    return super.forceFocus (focusHandle);
+}
+
+/**
+ * Returns the item at the given, zero-relative index in the
+ * receiver. Throws an exception if the index is out of range.
+ *
+ * @param index the index of the item to return
+ * @return the item at the given index
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the list minus 1 (inclusive)</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 ToolItem getItem (int index) {
+    checkWidget();
+    if (!(0 <= index && index < getItemCount())) error (DWT.ERROR_INVALID_RANGE);
+    return getItems()[index];
+}
+
+/**
+ * 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 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 ToolItem getItem (Point point) {
+    checkWidget();
+    if (point is null) error (DWT.ERROR_NULL_ARGUMENT);
+    ToolItem[] items = getItems();
+    for (int i=0; i<items.length; i++) {
+        if (items[i].getBounds().contains(point)) return items[i];
+    }
+    return null;
+}
+
+/**
+ * Returns the number of items contained in the receiver.
+ *
+ * @return the number of items
+ *
+ * @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 int getItemCount () {
+    checkWidget();
+    auto list = OS.gtk_container_get_children (handle);
+    if (list is null) return 0;
+    int itemCount = OS.g_list_length (list);
+    OS.g_list_free (list);
+    return itemCount;
+}
+
+/**
+ * Returns an array of <code>ToolItem</code>s which are the items
+ * in the receiver.
+ * <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 items in the receiver
+ *
+ * @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 ToolItem [] getItems () {
+    checkWidget();
+    auto list = OS.gtk_container_get_children (handle);
+    if (list is null) return new ToolItem [0];
+    int count = OS.g_list_length (list);
+    ToolItem [] result = new ToolItem [count];
+    for (int i=0; i<count; i++) {
+        auto data = OS.g_list_nth_data (list, i);
+        Widget widget = display.getWidget (cast(GtkWidget*)data);
+        result [i] = cast(ToolItem) widget;
+    }
+    OS.g_list_free (list);
+    return result;
+}
+
+/**
+ * Returns the number of rows in the receiver. When
+ * the receiver has the <code>WRAP</code> style, the
+ * number of rows can be greater than one.  Otherwise,
+ * the number of rows is always one.
+ *
+ * @return the number of items
+ *
+ * @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 int getRowCount () {
+    checkWidget();
+     /* On GTK, toolbars cannot wrap */
+    return 1;
+}
+
+override int /*long*/ gtk_key_press_event (GtkWidget* widget, GdkEventKey* gdkEvent) {
+    if (!hasFocus ()) return 0;
+    auto result = super.gtk_key_press_event (widget, gdkEvent);
+    if (result !is 0) return result;
+    ToolItem [] items = getItems ();
+    int length = items.length;
+    int index = 0;
+    while (index < length) {
+        if (items [index].hasFocus ()) break;
+        index++;
+    }
+    bool next = false;
+    switch (gdkEvent.keyval) {
+        case OS.GDK_Up:
+        case OS.GDK_Left: next = false; break;
+        case OS.GDK_Down: {
+            if (0 <= index && index < length) {
+                ToolItem item = items [index];
+                if ((item.style & DWT.DROP_DOWN) !is 0) {
+                    Event event = new Event ();
+                    event.detail = DWT.ARROW;
+                    auto topHandle = item.topHandle ();
+                    event.x = OS.GTK_WIDGET_X (topHandle);
+                    event.y = OS.GTK_WIDGET_Y (topHandle) + OS.GTK_WIDGET_HEIGHT (topHandle);
+                    item.postEvent (DWT.Selection, event);
+                    return result;
+                }
+            }
+            //FALL THROUGH
+        }
+        case OS.GDK_Right: next = true; break;
+        default: return result;
+    }
+    int start = index, offset = next ? 1 : -1;
+    while ((index = (index + offset + length) % length) !is start) {
+        ToolItem item = items [index];
+        if (item.setFocus ()) return result;
+    }
+    return result;
+}
+
+bool hasFocus () {
+    ToolItem [] items = getItems ();
+    for (int i=0; i<items.length; i++) {
+        ToolItem item = items [i];
+        if (item.hasFocus ()) return true;
+    }
+    return super.hasFocus();
+}
+
+/**
+ * Searches the receiver's list starting at the first item
+ * (index 0) until an item is found that is equal to the
+ * argument, and returns the index of that item. If no item
+ * is found, returns -1.
+ *
+ * @param item the search item
+ * @return the index of the item
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the tool item is null</li>
+ *    <li>ERROR_INVALID_ARGUMENT - if the tool item has been disposed</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 int indexOf (ToolItem item) {
+    checkWidget();
+    if (item is null) error (DWT.ERROR_NULL_ARGUMENT);
+    ToolItem [] items = getItems ();
+    for (int i=0; i<items.length; i++) {
+        if (item is items[i]) return i;
+    }
+    return -1;
+}
+
+alias Composite.mnemonicHit mnemonicHit;
+bool mnemonicHit (char key) {
+    ToolItem [] items = getItems ();
+    for (int i=0; i<items.length; i++) {
+        auto labelHandle = items [i].labelHandle;
+        if (labelHandle !is null && mnemonicHit (labelHandle, key)) return true;
+    }
+    return false;
+}
+
+alias Composite.mnemonicMatch mnemonicMatch;
+override bool mnemonicMatch (char key) {
+    ToolItem [] items = getItems ();
+    for (int i=0; i<items.length; i++) {
+        auto labelHandle = items [i].labelHandle;
+        if (labelHandle !is null && mnemonicMatch (labelHandle, key)) return true;
+    }
+    return false;
+}
+
+void relayout () {
+    ToolItem [] items = getItems ();
+    for (int i=0; i<items.length; i++) {
+        ToolItem item = items [i];
+        if (item !is null) item.resizeControl ();
+    }
+}
+
+void releaseChildren (bool destroy) {
+    ToolItem [] items = getItems ();
+    for (int i=0; i<items.length; i++) {
+        ToolItem item = items [i];
+        if (item !is null && !item.isDisposed ()) {
+            item.release (false);
+        }
+    }
+    super.releaseChildren (destroy);
+}
+
+void releaseWidget () {
+    super.releaseWidget ();
+    if (imageList !is null) imageList.dispose ();
+    imageList = null;
+}
+
+void removeControl (Control control) {
+    super.removeControl (control);
+    ToolItem [] items = getItems ();
+    for (int i=0; i<items.length; i++) {
+        ToolItem item = items [i];
+        if (item.control is control) item.setControl (null);
+    }
+}
+
+int setBounds (int x, int y, int width, int height, bool move, bool resize) {
+    int result = super.setBounds (x, y, width, height, move, resize);
+    if ((result & RESIZED) !is 0) relayout ();
+    return result;
+}
+
+void setFontDescription (PangoFontDescription* font) {
+    super.setFontDescription (font);
+    ToolItem [] items = getItems ();
+    for (int i = 0; i < items.length; i++) {
+        items[i].setFontDescription (font);
+    }
+    relayout ();
+}
+
+alias Composite.setForegroundColor setForegroundColor;
+void setForegroundColor (GdkColor* color) {
+    super.setForegroundColor (color);
+    ToolItem [] items = getItems ();
+    for (int i = 0; i < items.length; i++) {
+        items[i].setForegroundColor (color);
+    }
+}
+
+public void setToolTipText (char[] string) {
+    checkWidget();
+    super.setToolTipText (string);
+    Shell shell = _getShell ();
+    ToolItem [] items = getItems ();
+    for (int i = 0; i < items.length; i++) {
+        char[] newString = string !is null ? null : items [i].toolTipText;
+        shell.setToolTipText (items [i].handle, newString);
+    }
+}
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dwt/widgets/ToolItem.d	Tue Jan 15 15:11:06 2008 +0100
@@ -0,0 +1,1042 @@
+/*******************************************************************************
+ * 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
+ *******************************************************************************/
+module dwt.widgets.ToolItem;
+
+
+
+import dwt.DWT;
+import dwt.DWTException;
+import dwt.events.SelectionEvent;
+import dwt.events.SelectionListener;
+import dwt.graphics.Image;
+import dwt.graphics.Rectangle;
+import dwt.internal.gtk.OS;
+import dwt.widgets.Item;
+import dwt.widgets.ToolBar;
+import dwt.widgets.Control;
+import dwt.widgets.Shell;
+import dwt.widgets.TypedListener;
+import dwt.widgets.Event;
+import dwt.widgets.ImageList;
+
+import tango.stdc.stringz;
+
+/**
+ * Instances of this class represent a selectable user interface object
+ * that represents a button in a tool bar.
+ * <dl>
+ * <dt><b>Styles:</b></dt>
+ * <dd>PUSH, CHECK, RADIO, SEPARATOR, DROP_DOWN</dd>
+ * <dt><b>Events:</b></dt>
+ * <dd>Selection</dd>
+ * </dl>
+ * <p>
+ * Note: Only one of the styles CHECK, PUSH, RADIO, SEPARATOR and DROP_DOWN
+ * may be specified.
+ * </p><p>
+ * IMPORTANT: This class is <em>not</em> intended to be subclassed.
+ * </p>
+ */
+public class ToolItem : Item {
+    GtkWidget* boxHandle, arrowHandle, arrowBoxHandle, separatorHandle, labelHandle, imageHandle;
+    ToolBar parent;
+    Control control;
+    Image hotImage, disabledImage;
+    char[] toolTipText;
+    bool drawHotImage;
+
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>ToolBar</code>) and a style value
+ * describing its behavior and appearance. The item is added
+ * to the end of the items maintained by its parent.
+ * <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 DWT#PUSH
+ * @see DWT#CHECK
+ * @see DWT#RADIO
+ * @see DWT#SEPARATOR
+ * @see DWT#DROP_DOWN
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public this (ToolBar parent, int style) {
+    super (parent, checkStyle (style));
+    this.parent = parent;
+    createWidget (parent.getItemCount ());
+}
+
+/**
+ * Constructs a new instance of this class given its parent
+ * (which must be a <code>ToolBar</code>), a style value
+ * describing its behavior and appearance, and the index
+ * at which to place it in the items maintained by its parent.
+ * <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
+ * @param index the zero-relative index to store the receiver in its parent
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_NULL_ARGUMENT - if the parent is null</li>
+ *    <li>ERROR_INVALID_RANGE - if the index is not between 0 and the number of elements in the parent (inclusive)</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 DWT#PUSH
+ * @see DWT#CHECK
+ * @see DWT#RADIO
+ * @see DWT#SEPARATOR
+ * @see DWT#DROP_DOWN
+ * @see Widget#checkSubclass
+ * @see Widget#getStyle
+ */
+public this (ToolBar parent, int style, int index) {
+    super (parent, checkStyle (style));
+    this.parent = parent;
+    int count = parent.getItemCount ();
+    if (!(0 <= index && index <= count)) {
+        error (DWT.ERROR_INVALID_RANGE);
+    }
+    createWidget (index);
+}
+
+/**
+ * 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>
+ * When <code>widgetSelected</code> is called when the mouse is over the arrow portion of a drop-down tool,
+ * the event object detail field contains the value <code>DWT.ARROW</code>.
+ * <code>widgetDefaultSelected</code> is not called.
+ * </p>
+ *
+ * @param listener the listener which should be notified when the control is selected by the user,
+ *
+ * @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);
+}
+
+static int checkStyle (int style) {
+    return checkBits (style, DWT.PUSH, DWT.CHECK, DWT.RADIO, DWT.SEPARATOR, DWT.DROP_DOWN, 0);
+}
+
+protected void checkSubclass () {
+    if (!isValidSubclass ()) error (DWT.ERROR_INVALID_SUBCLASS);
+}
+
+void createHandle (int index) {
+    state |= HANDLE;
+    if ((style & DWT.SEPARATOR) is 0) {
+        boxHandle = cast(GtkWidget*)((parent.style & DWT.RIGHT) !is 0 ? OS.gtk_hbox_new (false, 0) : OS.gtk_vbox_new (false, 0));
+        if (boxHandle is null) error (DWT.ERROR_NO_HANDLES);
+        labelHandle = OS.gtk_label_new_with_mnemonic (null);
+        if (labelHandle is null) error (DWT.ERROR_NO_HANDLES);
+        imageHandle = OS.gtk_image_new ();
+        if (imageHandle is null) error (DWT.ERROR_NO_HANDLES);
+        OS.gtk_container_add (boxHandle, imageHandle);
+        OS.gtk_container_add (boxHandle, labelHandle);
+        if ((parent.style & DWT.VERTICAL) !is 0) {
+            // Align text and images to the left
+            OS.gtk_box_set_child_packing (boxHandle, imageHandle, false, false, 0, OS.GTK_PACK_START);
+            OS.gtk_box_set_child_packing (boxHandle, labelHandle, false, false, 2, OS.GTK_PACK_START);
+        }
+    }
+    int bits = DWT.SEPARATOR | DWT.RADIO | DWT.CHECK | DWT.PUSH | DWT.DROP_DOWN;
+    switch (style & bits) {
+        case DWT.SEPARATOR:
+            handle = cast(GtkWidget*)OS.gtk_hbox_new (false, 0);
+            if (handle is null) error (DWT.ERROR_NO_HANDLES);
+            bool isVertical = (parent.style & DWT.VERTICAL) !is 0;
+            separatorHandle = isVertical ? OS.gtk_hseparator_new() : OS.gtk_vseparator_new();
+            if (separatorHandle is null) error (DWT.ERROR_NO_HANDLES);
+            OS.gtk_widget_set_size_request (separatorHandle, isVertical ? 15 : 6, isVertical ? 6 : 15);
+            OS.gtk_widget_set_size_request (handle, isVertical ? 15 : 6, isVertical ? 6 : 15);
+            OS.gtk_container_add (handle, separatorHandle);
+            break;
+        case DWT.DROP_DOWN:
+            handle = OS.gtk_button_new ();
+            if (handle is null) error (DWT.ERROR_NO_HANDLES);
+            arrowBoxHandle = cast(GtkWidget*)OS.gtk_hbox_new (false, 0);
+            if (arrowBoxHandle is null) error(DWT.ERROR_NO_HANDLES);
+            arrowHandle = OS.gtk_arrow_new (OS.GTK_ARROW_DOWN, OS.GTK_SHADOW_NONE);
+            if (arrowHandle is null) error (DWT.ERROR_NO_HANDLES);
+            OS.gtk_widget_set_size_request (arrowHandle, 8, 6);
+            OS.gtk_container_add (handle, arrowBoxHandle);
+            OS.gtk_container_add (arrowBoxHandle, boxHandle);
+            OS.gtk_container_add (arrowBoxHandle, arrowHandle);
+            break;
+        case DWT.RADIO:
+            /*
+            * This code is intentionally commented.  Because GTK
+            * enforces radio behavior in a button group a radio group
+            * is not created for each set of contiguous buttons, each
+            * radio button will not draw unpressed.  The fix is to use
+            * toggle buttons instead.
+            */
+//          handle = OS.gtk_radio_button_new (0);
+//          if (handle is 0) error (DWT.ERROR_NO_HANDLES);
+//          OS.gtk_toggle_button_set_mode (handle, false);
+//          OS.gtk_container_add (handle, boxHandle);
+//          break;
+        case DWT.CHECK:
+            handle = OS.gtk_toggle_button_new ();
+            if (handle is null) error (DWT.ERROR_NO_HANDLES);
+            OS.gtk_toggle_button_set_mode (handle, false);
+            OS.gtk_container_add (handle, boxHandle);
+            break;
+        case DWT.PUSH:
+        default:
+            handle = OS.gtk_button_new ();
+            if (handle is null) error (DWT.ERROR_NO_HANDLES);
+            OS.gtk_container_add (handle, boxHandle);
+            break;
+    }
+    if ((style & DWT.SEPARATOR) is 0) {
+        int relief;
+        OS.gtk_widget_style_get1 (parent.handle, OS.button_relief.ptr, &relief);
+        OS.gtk_button_set_relief (handle, relief );
+    }
+    OS.GTK_WIDGET_UNSET_FLAGS (handle, OS.GTK_CAN_FOCUS);
+//  This code is intentionally commented.
+//  int /*long*/ fontHandle = parent.fontHandle ();
+//  GdkColor color = new GdkColor ();
+//  int /*long*/ style = OS.gtk_widget_get_style (fontHandle);
+//  OS.gtk_style_get_fg (style, OS.GTK_STATE_NORMAL, color);
+//  int /*long*/ font = OS.gtk_style_get_font_desc (style);
+//  setForegroundColor (color);
+//  setFontDescription (font);
+    if ((parent.state & FOREGROUND) !is 0) {
+        setForegroundColor (parent.getForegroundColor());
+    }
+    if ((parent.state & FONT) !is 0) {
+        setFontDescription (parent.getFontDescription());
+    }
+}
+
+void createWidget (int index) {
+    super.createWidget (index);
+    showWidget (index);
+    parent.relayout ();
+}
+
+void deregister() {
+    super.deregister ();
+    if (labelHandle !is null) display.removeWidget (labelHandle);
+}
+
+public void dispose () {
+    if (isDisposed ()) return;
+    ToolBar parent = this.parent;
+    super.dispose ();
+    parent.relayout ();
+}
+
+/**
+ * Returns a rectangle describing the receiver's size and location
+ * relative to its parent.
+ *
+ * @return the receiver's bounding rectangle
+ *
+ * @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 Rectangle getBounds () {
+    checkWidget();
+    parent.forceResize ();
+    auto topHandle = topHandle ();
+    int x, y, width, height;
+    /*
+    * Bug in GTK.  Toolbar items are only allocated their minimum size
+    * in versions before 2.4.0.  The fix is to use the total size
+    * available minus any borders.
+    */
+    if (OS.GTK_VERSION < OS.buildVERSION (2, 4, 0) && control !is null && !control.isDisposed ()) {
+        int border = OS.gtk_container_get_border_width (parent.handle);
+        int shadow;
+        OS.gtk_widget_style_get1 (parent.handle, "shadow_type".ptr, &shadow);
+        if (shadow !is OS.GTK_SHADOW_NONE) {
+            border += OS.gtk_style_get_xthickness (OS.gtk_widget_get_style (parent.handle));
+        }
+        if ((parent.style & DWT.VERTICAL) !is 0) {
+            x = border;
+            y = OS.GTK_WIDGET_Y (topHandle) + border;
+            width = OS.GTK_WIDGET_WIDTH (parent.handle) - border*2;
+            height = OS.GTK_WIDGET_HEIGHT (topHandle);
+        } else {
+            x = OS.GTK_WIDGET_X (topHandle) + border;
+            y = border;
+            width = OS.GTK_WIDGET_WIDTH (topHandle);
+            height = OS.GTK_WIDGET_HEIGHT (parent.handle) - border*2;
+        }
+    } else {
+        x = OS.GTK_WIDGET_X (topHandle);
+        y = OS.GTK_WIDGET_Y (topHandle);
+        width = OS.GTK_WIDGET_WIDTH (topHandle);
+        height = OS.GTK_WIDGET_HEIGHT (topHandle);
+    }
+    return new Rectangle (x, y, width, height);
+}
+
+/**
+ * Returns the control that is used to fill the bounds of
+ * the item when the item is a <code>SEPARATOR</code>.
+ *
+ * @return the control
+ *
+ * @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 Control getControl () {
+    checkWidget();
+    return control;
+}
+
+/**
+ * Returns the receiver's disabled image if it has one, or null
+ * if it does not.
+ * <p>
+ * The disabled image is displayed when the receiver is disabled.
+ * </p>
+ *
+ * @return the receiver's disabled image
+ *
+ * @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 Image getDisabledImage () {
+    checkWidget();
+    return disabledImage;
+}
+
+/**
+ * Returns <code>true</code> if the receiver is enabled, and
+ * <code>false</code> otherwise. A disabled control is typically
+ * not selectable from the user interface and draws with an
+ * inactive or "grayed" look.
+ *
+ * @return the receiver's enabled state
+ *
+ * @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 #isEnabled
+ */
+public bool getEnabled () {
+    checkWidget();
+    auto topHandle = topHandle ();
+    return OS.GTK_WIDGET_SENSITIVE (topHandle);
+}
+
+/**
+ * Returns the receiver's hot image if it has one, or null
+ * if it does not.
+ * <p>
+ * The hot image is displayed when the mouse enters the receiver.
+ * </p>
+ *
+ * @return the receiver's hot image
+ *
+ * @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 Image getHotImage () {
+    checkWidget();
+    return hotImage;
+}
+
+/**
+ * Returns the receiver's parent, which must be a <code>ToolBar</code>.
+ *
+ * @return the receiver's parent
+ *
+ * @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 ToolBar getParent () {
+    checkWidget();
+    if (parent is null) error (DWT.ERROR_WIDGET_DISPOSED);
+    return parent;
+}
+
+/**
+ * Returns <code>true</code> if the receiver is selected,
+ * and false otherwise.
+ * <p>
+ * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>,
+ * it is selected when it is checked (which some platforms draw as a
+ * pushed in button). If the receiver is of any other type, this method
+ * returns false.
+ * </p>
+ *
+ * @return the selection state
+ *
+ * @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 bool getSelection () {
+    checkWidget();
+    if ((style & (DWT.CHECK | DWT.RADIO)) is 0) return false;
+    return cast(bool)OS.gtk_toggle_button_get_active (handle);
+}
+
+/**
+ * Returns the receiver's tool tip text, or null if it has not been set.
+ *
+ * @return the receiver's tool tip 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 char[] getToolTipText () {
+    checkWidget();
+    return toolTipText;
+}
+
+/**
+ * Gets the width of the receiver.
+ *
+ * @return the width
+ *
+ * @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 int getWidth () {
+    checkWidget();
+    parent.forceResize ();
+    auto topHandle = topHandle ();
+    return OS.GTK_WIDGET_WIDTH (topHandle);
+}
+
+override int /*long*/ gtk_button_press_event (GtkWidget* widget, GdkEventButton* gdkEvent) {
+    double x = gdkEvent.x;
+    gdkEvent.x += OS.GTK_WIDGET_X (handle);
+    double y = gdkEvent.y;
+    gdkEvent.y += OS.GTK_WIDGET_Y (handle);
+    auto result = parent.gtk_button_press_event (widget, gdkEvent);
+    gdkEvent.x = x;
+    gdkEvent.y = y;
+    return result;
+}
+
+override int /*long*/ gtk_button_release_event (GtkWidget* widget, GdkEventButton* gdkEvent) {
+    double x = gdkEvent.x;
+    gdkEvent.x += OS.GTK_WIDGET_X (handle);
+    double y = gdkEvent.y;
+    gdkEvent.y += OS.GTK_WIDGET_Y (handle);
+    auto result = parent.gtk_button_release_event (widget, gdkEvent);
+    gdkEvent.x = x;
+    gdkEvent.y = y;
+    return result;
+}
+
+override int /*long*/ gtk_clicked (GtkWidget* widget) {
+    Event event = new Event ();
+    if ((style & DWT.DROP_DOWN) !is 0) {
+        auto eventPtr = OS.gtk_get_current_event ();
+        if (eventPtr !is null) {
+            GdkEvent* gdkEvent = cast(GdkEvent*)eventPtr;
+            switch (gdkEvent.type) {
+                case OS.GDK_BUTTON_PRESS:
+                case OS.GDK_2BUTTON_PRESS:
+                case OS.GDK_BUTTON_RELEASE: {
+                    double x_win;
+                    double y_win;
+                    OS.gdk_event_get_coords (eventPtr, &x_win, &y_win);
+                    int x = OS.GTK_WIDGET_X (arrowHandle) - OS.GTK_WIDGET_X (handle);
+                    int width = OS.GTK_WIDGET_WIDTH (arrowHandle);
+                    if ((((state & DWT.RIGHT_TO_LEFT) is 0) && x <= cast(int)x_win)
+                        || (((state & DWT.RIGHT_TO_LEFT) !is 0) && cast(int)x_win <= x + width)) {
+                        event.detail = DWT.ARROW;
+                        auto topHandle = topHandle ();
+                        event.x = OS.GTK_WIDGET_X (topHandle);
+                        event.y = OS.GTK_WIDGET_Y (topHandle) + OS.GTK_WIDGET_HEIGHT (topHandle);
+                    }
+                    break;
+                }
+                default:
+            }
+            OS.gdk_event_free (eventPtr);
+        }
+    }
+    if ((style & DWT.RADIO) !is 0) {
+        if ((parent.getStyle () & DWT.NO_RADIO_GROUP) is 0) {
+            selectRadio ();
+        }
+    }
+    postEvent (DWT.Selection, event);
+    return 0;
+}
+
+override int /*long*/ gtk_enter_notify_event (GtkWidget* widget, GdkEventCrossing* event) {
+    parent.gtk_enter_notify_event (widget, event);
+    drawHotImage = (parent.style & DWT.FLAT) !is 0 && hotImage !is null;
+    if (drawHotImage && imageHandle !is null) {
+        ImageList imageList = parent.imageList;
+        if (imageList !is null) {
+            int index = imageList.indexOf (hotImage);
+            if (index !is -1) {
+                auto pixbuf = imageList.getPixbuf (index);
+                OS.gtk_image_set_from_pixbuf (imageHandle, pixbuf);
+            }
+        }
+    }
+    return 0;
+}
+
+override int /*long*/ gtk_event_after (GtkWidget* widget, GdkEvent* gdkEvent) {
+    switch (gdkEvent.type) {
+        case OS.GDK_BUTTON_PRESS: {
+            GdkEventButton* gdkEventButton = cast(GdkEventButton*)gdkEvent;
+            if (gdkEventButton.button is 3) {
+                parent.showMenu (cast(int) gdkEventButton.x_root, cast(int) gdkEventButton.y_root);
+            }
+            break;
+        default:
+        }
+    }
+    return 0;
+}
+
+override int /*long*/ gtk_focus_out_event (GtkWidget* widget, GdkEventFocus* event) {
+    OS.GTK_WIDGET_UNSET_FLAGS (handle, OS.GTK_CAN_FOCUS);
+    parent.lastFocus = this;
+    return 0;
+}
+
+override int /*long*/ gtk_leave_notify_event (GtkWidget* widget, GdkEventCrossing* event) {
+    parent.gtk_leave_notify_event (widget, event);
+    if (drawHotImage) {
+        drawHotImage = false;
+        if (imageHandle !is null && image !is null) {
+            ImageList imageList = parent.imageList;
+            if (imageList !is null) {
+                int index = imageList.indexOf (image);
+                if (index !is -1) {
+                    auto pixbuf = imageList.getPixbuf (index);
+                    OS.gtk_image_set_from_pixbuf (imageHandle, pixbuf);
+                }
+            }
+        }
+    }
+    return 0;
+}
+
+override int /*long*/ gtk_map (GtkWidget* widget) {
+    parent.fixZOrder ();
+    return 0;
+}
+
+override int /*long*/ gtk_mnemonic_activate (GtkWidget* widget, int /*long*/ arg1) {
+    return parent.gtk_mnemonic_activate (widget, arg1);
+}
+
+bool hasFocus () {
+    return OS.GTK_WIDGET_HAS_FOCUS (handle);
+}
+
+void hookEvents () {
+    super.hookEvents ();
+    if ((style & DWT.SEPARATOR) !is 0) return;
+    OS.g_signal_connect_closure (handle, OS.clicked.ptr, display.closures [CLICKED], false);
+    OS.g_signal_connect_closure_by_id (handle, display.signalIds [ENTER_NOTIFY_EVENT], 0, display.closures [ENTER_NOTIFY_EVENT], false);
+    OS.g_signal_connect_closure_by_id (handle, display.signalIds [LEAVE_NOTIFY_EVENT], 0, display.closures [LEAVE_NOTIFY_EVENT], false);
+    if (labelHandle !is null) OS.g_signal_connect_closure_by_id (labelHandle, display.signalIds [MNEMONIC_ACTIVATE], 0, display.closures [MNEMONIC_ACTIVATE], false);
+
+    OS.g_signal_connect_closure_by_id (handle, display.signalIds [FOCUS_OUT_EVENT], 0, display.closures [FOCUS_OUT_EVENT], false);
+
+    /*
+    * Feature in GTK.  Usually, GTK widgets propagate all events to their
+    * parent when they are done their own processing.  However, in contrast
+    * to other widgets, the buttons that make up the tool items, do not propagate
+    * the mouse up/down events. It is interesting to note that they DO propagate
+    * mouse motion events.  The fix is to explicitly forward mouse up/down events
+    * to the parent.
+    */
+    int mask =
+        OS.GDK_EXPOSURE_MASK | OS.GDK_POINTER_MOTION_MASK |
+        OS.GDK_BUTTON_PRESS_MASK | OS.GDK_BUTTON_RELEASE_MASK |
+        OS.GDK_ENTER_NOTIFY_MASK | OS.GDK_LEAVE_NOTIFY_MASK |
+        OS.GDK_KEY_PRESS_MASK | OS.GDK_KEY_RELEASE_MASK |
+        OS.GDK_FOCUS_CHANGE_MASK;
+    OS.gtk_widget_add_events (handle, mask);
+    OS.g_signal_connect_closure_by_id (handle, display.signalIds [BUTTON_PRESS_EVENT], 0, display.closures [BUTTON_PRESS_EVENT], false);
+    OS.g_signal_connect_closure_by_id (handle, display.signalIds [BUTTON_RELEASE_EVENT], 0, display.closures [BUTTON_RELEASE_EVENT], false);
+    OS.g_signal_connect_closure_by_id (handle, display.signalIds [EVENT_AFTER], 0, display.closures[EVENT_AFTER], false);
+
+    auto topHandle = topHandle ();
+    OS.g_signal_connect_closure_by_id (topHandle, display.signalIds [MAP], 0, display.closures [MAP], true);
+}
+
+/**
+ * Returns <code>true</code> if the receiver is enabled and all
+ * of the receiver's ancestors are enabled, and <code>false</code>
+ * otherwise. A disabled control is typically not selectable from the
+ * user interface and draws with an inactive or "grayed" look.
+ *
+ * @return the receiver's enabled state
+ *
+ * @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 #getEnabled
+ */
+public bool isEnabled () {
+    checkWidget();
+    return getEnabled () && parent.isEnabled ();
+}
+
+void register () {
+    super.register ();
+    if (labelHandle !is null) display.addWidget (labelHandle, this);
+}
+
+void releaseHandle () {
+    super.releaseHandle ();
+    boxHandle = arrowHandle = separatorHandle = labelHandle = imageHandle = null;
+}
+
+void releaseWidget () {
+    super.releaseWidget ();
+    if (parent.lastFocus is this) parent.lastFocus = null;
+    parent = null;
+    control = null;
+    hotImage = disabledImage = null;
+    toolTipText = 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);
+}
+
+void resizeControl () {
+    if (control !is null && !control.isDisposed ()) {
+        if (separatorHandle !is null) OS.gtk_widget_hide (separatorHandle);
+        /*
+        * Set the size and location of the control
+        * separately to minimize flashing in the
+        * case where the control does not resize
+        * to the size that was requested.  This
+        * case can occur when the control is a
+        * combo box.
+        */
+        Rectangle itemRect = getBounds ();
+        control.setSize (itemRect.width, itemRect.height);
+        Rectangle rect = control.getBounds ();
+        rect.x = itemRect.x + (itemRect.width - rect.width) / 2;
+        rect.y = itemRect.y + (itemRect.height - rect.height) / 2;
+        control.setLocation (rect.x, rect.y);
+    } else {
+        if (separatorHandle !is null) OS.gtk_widget_show (separatorHandle);
+    }
+}
+
+void selectRadio () {
+    int index = 0;
+    ToolItem [] items = parent.getItems ();
+    while (index < items.length && items [index] !is this) index++;
+    int i = index - 1;
+    while (i >= 0 && items [i].setRadioSelection (false)) --i;
+    int j = index + 1;
+    while (j < items.length && items [j].setRadioSelection (false)) j++;
+    setSelection (true);
+}
+
+/**
+ * Sets the control that is used to fill the bounds of
+ * the item when the item is a <code>SEPARATOR</code>.
+ *
+ * @param control the new control
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the control has been disposed</li>
+ *    <li>ERROR_INVALID_PARENT - if the control is not in the same widget tree</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 setControl (Control control) {
+    checkWidget ();
+    if (control !is null) {
+        if (control.isDisposed()) error (DWT.ERROR_INVALID_ARGUMENT);
+        if (control.parent !is parent) error (DWT.ERROR_INVALID_PARENT);
+    }
+    if ((style & DWT.SEPARATOR) is 0) return;
+    if (this.control is control) return;
+    this.control = control;
+    parent.relayout ();
+}
+
+/**
+ * Sets the receiver's disabled image to the argument, which may be
+ * null indicating that no disabled image should be displayed.
+ * <p>
+ * The disabled image is displayed when the receiver is disabled.
+ * </p>
+ *
+ * @param image the disabled image to display on the receiver (may be null)
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</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 setDisabledImage (Image image) {
+    checkWidget();
+    if ((style & DWT.SEPARATOR) !is 0) return;
+    disabledImage = image;
+}
+
+/**
+ * Enables the receiver if the argument is <code>true</code>,
+ * and disables it otherwise.
+ * <p>
+ * A disabled control is typically
+ * not selectable from the user interface and draws with an
+ * inactive or "grayed" look.
+ * </p>
+ *
+ * @param enabled the new enabled state
+ *
+ * @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 setEnabled (bool enabled) {
+    checkWidget();
+    auto topHandle = topHandle ();
+    OS.gtk_widget_set_sensitive (topHandle, enabled);
+    if (enabled) {
+        /*
+        * Bug in GTK.  GtkButton requires an enter notify before it
+        * allows the button to be pressed, but events are dropped when
+        * widgets are insensitive.  The fix is to hide and show the
+        * button if the pointer is within its bounds.
+        */
+        int x, y;
+        OS.gdk_window_get_pointer (parent.paintWindow (), &x, &y, null);
+        if (getBounds ().contains (x, y)) {
+            OS.gtk_widget_hide (handle);
+            OS.gtk_widget_show (handle);
+        }
+    }
+}
+
+bool setFocus () {
+    if ((style & DWT.SEPARATOR) !is 0) return false;
+    if (!OS.gtk_widget_get_child_visible (handle)) return false;
+    OS.GTK_WIDGET_SET_FLAGS (handle, OS.GTK_CAN_FOCUS);
+    OS.gtk_widget_grab_focus (handle);
+    bool result = cast(bool)OS.gtk_widget_is_focus (handle);
+    if (!result) OS.GTK_WIDGET_UNSET_FLAGS (handle, OS.GTK_CAN_FOCUS);
+    return result;
+}
+
+void setFontDescription (PangoFontDescription* font) {
+    OS.gtk_widget_modify_font (handle, font);
+    if (labelHandle !is null) OS.gtk_widget_modify_font (labelHandle, font);
+    if (imageHandle !is null) OS.gtk_widget_modify_font (imageHandle, font);
+}
+
+alias Item.setForegroundColor setForegroundColor;
+void setForegroundColor (GdkColor* color) {
+    setForegroundColor (handle, color);
+    if (labelHandle !is null) setForegroundColor (labelHandle, color);
+    if (imageHandle !is null) setForegroundColor (imageHandle, color);
+}
+
+/**
+ * Sets the receiver's hot image to the argument, which may be
+ * null indicating that no hot image should be displayed.
+ * <p>
+ * The hot image is displayed when the mouse enters the receiver.
+ * </p>
+ *
+ * @param image the hot image to display on the receiver (may be null)
+ *
+ * @exception IllegalArgumentException <ul>
+ *    <li>ERROR_INVALID_ARGUMENT - if the image has been disposed</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 setHotImage (Image image) {
+    checkWidget();
+    if ((style & DWT.SEPARATOR) !is 0) return;
+    hotImage = image;
+    if (image !is null) {
+        ImageList imageList = parent.imageList;
+        if (imageList is null) imageList = parent.imageList = new ImageList ();
+        int imageIndex = imageList.indexOf (image);
+        if (imageIndex is -1) {
+            imageIndex = imageList.add (image);
+        } else {
+            imageList.put (imageIndex, image);
+        }
+    }
+}
+
+public void setImage (Image image) {
+    checkWidget();
+    if ((style & DWT.SEPARATOR) !is 0) return;
+    super.setImage (image);
+    if (imageHandle is null) return;
+    if (image !is null) {
+        ImageList imageList = parent.imageList;
+        if (imageList is null) imageList = parent.imageList = new ImageList ();
+        int imageIndex = imageList.indexOf (image);
+        if (imageIndex is -1) {
+            imageIndex = imageList.add (image);
+        } else {
+            imageList.put (imageIndex, image);
+        }
+        auto pixbuf = imageList.getPixbuf (imageIndex);
+        OS.gtk_image_set_from_pixbuf (imageHandle, pixbuf);
+        OS.gtk_widget_show (imageHandle);
+    } else {
+        OS.gtk_image_set_from_pixbuf (imageHandle, null);
+        OS.gtk_widget_hide (imageHandle);
+    }
+    parent.relayout ();
+}
+
+void setOrientation () {
+    if ((parent.style & DWT.RIGHT_TO_LEFT) !is 0) {
+        if (handle !is null) OS.gtk_widget_set_direction (handle, OS.GTK_TEXT_DIR_RTL);
+        if (labelHandle !is null) OS.gtk_widget_set_direction (labelHandle, OS.GTK_TEXT_DIR_RTL);
+        if (imageHandle !is null) OS.gtk_widget_set_direction (imageHandle, OS.GTK_TEXT_DIR_RTL);
+        if (separatorHandle !is null) OS.gtk_widget_set_direction (separatorHandle, OS.GTK_TEXT_DIR_RTL);
+        if (arrowHandle !is null) OS.gtk_widget_set_direction (arrowHandle, OS.GTK_TEXT_DIR_RTL);
+        if (boxHandle !is null) OS.gtk_widget_set_direction (boxHandle, OS.GTK_TEXT_DIR_RTL);
+        if (arrowBoxHandle !is null) OS.gtk_widget_set_direction (arrowBoxHandle, OS.GTK_TEXT_DIR_RTL);
+    }
+}
+
+bool setRadioSelection (bool value) {
+    if ((style & DWT.RADIO) is 0) return false;
+    if (getSelection () !is value) {
+        setSelection (value);
+        postEvent (DWT.Selection);
+    }
+    return true;
+}
+
+/**
+ * Sets the selection state of the receiver.
+ * <p>
+ * When the receiver is of type <code>CHECK</code> or <code>RADIO</code>,
+ * it is selected when it is checked (which some platforms draw as a
+ * pushed in button).
+ * </p>
+ *
+ * @param selected the new selection state
+ *
+ * @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 setSelection (bool selected) {
+    checkWidget ();
+    if ((style & (DWT.CHECK | DWT.RADIO)) is 0) return;
+    OS.g_signal_handlers_block_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCLICKED);
+    OS.gtk_toggle_button_set_active (handle, selected);
+    OS.g_signal_handlers_unblock_matched (handle, OS.G_SIGNAL_MATCH_DATA, 0, 0, null, null, udCLICKED);
+}
+
+/**
+ * Sets the receiver's text. The string may include
+ * the mnemonic character.
+ * </p>
+ * <p>
+ * Mnemonics are indicated by an '&amp;' that causes the next
+ * character to be the mnemonic.  When the user presses a
+ * key sequence that matches the mnemonic, a selection
+ * event occurs. On most platforms, the mnemonic appears
+ * underlined but may be emphasised in a platform specific
+ * manner.  The mnemonic indicator character '&amp;' can be
+ * escaped by doubling it in the string, causing a single
+ * '&amp;' to be displayed.
+ * </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 (char[] string) {
+    checkWidget();
+    if (string is null) error (DWT.ERROR_NULL_ARGUMENT);
+    if ((style & DWT.SEPARATOR) !is 0) return;
+    super.setText (string);
+    if (labelHandle is null) return;
+    char [] chars = fixMnemonic (string);
+    OS.gtk_label_set_text_with_mnemonic (labelHandle, toStringz(chars));
+    if (string.length !is 0) {
+        OS.gtk_widget_show (labelHandle);
+    } else {
+        OS.gtk_widget_hide (labelHandle);
+    }
+    parent.relayout ();
+}
+
+/**
+ * Sets the receiver's tool tip text to the argument, which
+ * may be null indicating that no tool tip text should be shown.
+ *
+ * @param string the new tool tip text (or null)
+ *
+ * @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 setToolTipText (char[] string) {
+    checkWidget();
+    if (parent.toolTipText is null) {
+        Shell shell = parent._getShell ();
+        setToolTipText (shell, string);
+    }
+    toolTipText = string;
+}
+
+void setToolTipText (Shell shell, char[] newString) {
+    shell.setToolTipText (handle, newString);
+}
+
+/**
+ * Sets the width of the receiver, for <code>SEPARATOR</code> ToolItems.
+ *
+ * @param width the new width
+ *
+ * @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 setWidth (int width) {
+    checkWidget();
+    if ((style & DWT.SEPARATOR) is 0) return;
+    if (width < 0) return;
+    OS.gtk_widget_set_size_request (handle, width, -1);
+    parent.relayout ();
+}
+
+void showWidget (int index) {
+    if (handle !is null) OS.gtk_widget_show (handle);
+    if (boxHandle !is null) OS.gtk_widget_show (boxHandle);
+    if (separatorHandle !is null) OS.gtk_widget_show (separatorHandle);
+    if (arrowBoxHandle !is null) OS.gtk_widget_show (arrowBoxHandle);
+    if (arrowHandle !is null) OS.gtk_widget_show (arrowHandle);
+    OS.gtk_toolbar_insert_widget (parent.handle, handle, null, null, index);
+}
+}