--- a/dwt/widgets/Control.d	Wed Jan 09 03:05:22 2008 +0100
+++ b/dwt/widgets/Control.d	Wed Jan 09 06:17:26 2008 +0100
@@ -11,10 +11,52 @@
 module dwt.widgets.Control;
 
 import dwt.internal.gtk.c.gtktypes;
-import dwt.widgets.Widget;
+
+import dwt.SWT;
+//import dwt.accessibility.Accessible;
+import dwt.events.ControlListener;
+import dwt.events.FocusListener;
+import dwt.events.HelpListener;
+import dwt.events.KeyListener;
+import dwt.events.MouseListener;
+import dwt.events.MouseMoveListener;
+import dwt.events.MouseTrackListener;
+import dwt.events.PaintListener;
+import dwt.events.TraverseListener;
+import dwt.events.DragDetectListener;
+import dwt.events.MenuDetectListener;
+import dwt.events.MouseWheelListener;
+import dwt.graphics.Color;
+import dwt.graphics.Cursor;
+import dwt.graphics.Device;
+import dwt.graphics.Drawable;
+import dwt.graphics.Font;
+import dwt.graphics.GC;
+import dwt.graphics.GCData;
+import dwt.graphics.Image;
+import dwt.graphics.Point;
+import dwt.graphics.Rectangle;
+import dwt.internal.Converter;
+import dwt.internal.SWTEventListener;
+import dwt.internal.accessibility.gtk.ATK;
+import dwt.internal.gtk.OS;
+import dwt.widgets.Composite;
+import dwt.widgets.Decorations;
+import dwt.widgets.Display;
+import dwt.widgets.Event;
+import dwt.widgets.EventTable;
+import dwt.widgets.Listener;
+import dwt.widgets.Menu;
+import dwt.widgets.Monitor;
 import dwt.widgets.Shell;
-import dwt.graphics.Point;
-
+import dwt.widgets.TypedListener;
+import dwt.widgets.Widget;
+
+import Math = tango.math.Math;
+import tango.stdc.string;
+import tango.stdc.stringz;
+
+/+
 class Control : Widget {
     GdkWindow* paintWindow () { return null; };
     public Shell getShell();
@@ -30,13 +72,11 @@
     public Point toDisplay (Point point) ;
     Point getIMCaretPos () ;
 }
-/+++
-import dwt.*;
-import dwt.internal.Converter;
-import dwt.internal.accessibility.gtk.ATK;
-import dwt.graphics.*;
-import dwt.events.*;
-import dwt.accessibility.*;
++/
+
+class Accessible{
+    static Accessible internal_new_Accessible(Control);
+}
 
 /**
  * Control is the abstract superclass of all windowed user interface classes.
@@ -56,20 +96,21 @@
  * within the SWT implementation.
  * </p>
  */
-public abstract class Control extends Widget implements Drawable {
-	int /*long*/ fixedHandle;
-	int /*long*/ redrawWindow, enableWindow;
+public abstract class Control : Widget, Drawable {
+	GtkWidget* fixedHandle;
+	GdkWindow* redrawWindow;
+    GdkWindow* enableWindow;
 	int drawCount;
 	Composite parent;
 	Cursor cursor;
 	Menu menu;
 	Image backgroundImage;
 	Font font;
-	String toolTipText;
+	char[] toolTipText;
 	Object layoutData;
 	Accessible accessible;
 
-Control () {
+this () {
 }
 
 /**
@@ -100,46 +141,47 @@
  * @see Widget#checkSubclass
  * @see Widget#getStyle
  */
-public Control (Composite parent, int style) {
+public this (Composite parent, int style) {
 	super (parent, style);
 	this.parent = parent;
 	createWidget (0);
 }
 
-int /*long*/ defaultFont () {
+PangoFontDescription* defaultFont () {
 	return display.getSystemFont ().handle;
 }
 
 void deregister () {
 	super.deregister ();
-	if (fixedHandle != 0) display.removeWidget (fixedHandle);
-	int /*long*/ imHandle = imHandle ();
-	if (imHandle != 0) display.removeWidget (imHandle);
+	if (fixedHandle !is null) display.removeWidget (fixedHandle);
+	auto imHandle = imHandle ();
+	if (imHandle !is null) display.removeWidget (cast(GtkWidget*)imHandle);
 }
 
-boolean drawGripper (int x, int y, int width, int height, boolean vertical) {
-	int /*long*/ paintHandle = paintHandle ();
-	int /*long*/ window = OS.GTK_WIDGET_WINDOW (paintHandle);
-	if (window == 0) return false;
+bool drawGripper (int x, int y, int width, int height, bool vertical) {
+	auto paintHandle = paintHandle ();
+	auto window = OS.GTK_WIDGET_WINDOW (paintHandle);
+	if (window is null) return false;
 	int orientation = vertical ? OS.GTK_ORIENTATION_HORIZONTAL : OS.GTK_ORIENTATION_VERTICAL;
-	OS.gtk_paint_handle (OS.gtk_widget_get_style (paintHandle), window, OS.GTK_STATE_NORMAL, OS.GTK_SHADOW_OUT, null, paintHandle, new byte [1], x, y, width, height, orientation);
+    char dummy;
+	OS.gtk_paint_handle (OS.gtk_widget_get_style (paintHandle), window, cast(GtkStateType)OS.GTK_STATE_NORMAL, cast(GtkShadowType)OS.GTK_SHADOW_OUT, null, paintHandle, &dummy, x, y, width, height, cast(GtkOrientation)orientation);
 	return true;
 }
 
-void enableWidget (boolean enabled) {
+void enableWidget (bool enabled) {
 	OS.gtk_widget_set_sensitive (handle, enabled);
 }
 
-int /*long*/ enterExitHandle () {
+GtkWidget* enterExitHandle () {
 	return eventHandle ();
 }
 
-int /*long*/ eventHandle () {
+GtkWidget* eventHandle () {
 	return handle;
 }
 
-int /*long*/ eventWindow () {
-	int /*long*/ eventHandle = eventHandle ();
+GdkWindow* eventWindow () {
+	auto eventHandle = eventHandle ();
 	OS.gtk_widget_realize (eventHandle);
 	return OS.GTK_WIDGET_WINDOW (eventHandle);
 }
@@ -147,21 +189,21 @@
 void fixFocus (Control focusControl) {
 	Shell shell = getShell ();
 	Control control = this;
-	while (control != shell && (control = control.parent) != null) {
+	while (control !is shell && (control = control.parent) !is null) {
 		if (control.setFocus ()) return;
 	}
 	shell.setSavedFocus (focusControl);
-	int /*long*/ focusHandle = shell.vboxHandle;
+	auto focusHandle = shell.vboxHandle;
 	OS.GTK_WIDGET_SET_FLAGS (focusHandle, OS.GTK_CAN_FOCUS);
 	OS.gtk_widget_grab_focus (focusHandle);
 	OS.GTK_WIDGET_UNSET_FLAGS (focusHandle, OS.GTK_CAN_FOCUS);
 }
 
 void fixStyle () {
-	if (fixedHandle != 0) fixStyle (fixedHandle);
+	if (fixedHandle !is null) fixStyle (fixedHandle);
 }
 
-void fixStyle (int /*long*/ handle) {
+void fixStyle (GtkWidget* handle) {
 	/*
 	* Feature in GTK.  Some GTK themes apply a different background to
 	* the contents of a GtkNotebook.  However, in an SWT TabFolder, the
@@ -173,30 +215,30 @@
 	* Note that this has to be when the theme settings changes and that it
 	* should not override the application background.
 	*/
-	if ((state & BACKGROUND) != 0) return;
-	int /*long*/ childStyle = parent.childStyle ();
-	if (childStyle != 0) {
-		GdkColor color = new GdkColor();
+	if ((state & BACKGROUND) !is 0) return;
+	auto childStyle = parent.childStyle ();
+	if (childStyle !is null) {
+		GdkColor* color = new GdkColor();
 		OS.gtk_style_get_bg (childStyle, 0, color);
-		OS.gtk_widget_modify_bg (handle, 0, color);
+		OS.gtk_widget_modify_bg (handle, cast(GtkStateType) 0, color);
 	}
 }
 
-int /*long*/ focusHandle () {
+GtkWidget* focusHandle () {
 	return handle;
 }
 
-int /*long*/ fontHandle () {
+GtkWidget* fontHandle () {
 	return handle;
 }
 
-boolean hasFocus () {
-	return this == display.getFocusControl();
+bool hasFocus () {
+	return this is display.getFocusControl();
 }
 
 void hookEvents () {
 	/* Connect the keyboard signals */
-	int /*long*/ focusHandle = focusHandle ();
+	auto focusHandle = focusHandle ();
 	int focusMask = OS.GDK_KEY_PRESS_MASK | OS.GDK_KEY_RELEASE_MASK | OS.GDK_FOCUS_CHANGE_MASK;
 	OS.gtk_widget_add_events (focusHandle, focusMask);
 	OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [POPUP_MENU], 0, display.closures [POPUP_MENU], false);
@@ -208,7 +250,7 @@
 	OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [FOCUS_OUT_EVENT], 0, display.closures [FOCUS_OUT_EVENT], false);
 
 	/* Connect the mouse signals */
-	int /*long*/ eventHandle = eventHandle ();
+	auto eventHandle = eventHandle ();
 	int eventMask = OS.GDK_POINTER_MOTION_MASK | OS.GDK_BUTTON_PRESS_MASK |
 		OS.GDK_BUTTON_RELEASE_MASK;
 	OS.gtk_widget_add_events (eventHandle, eventMask);
@@ -218,7 +260,7 @@
 	OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [SCROLL_EVENT], 0, display.closures [SCROLL_EVENT], false);
 
 	/* Connect enter/exit signals */
-	int /*long*/ enterExitHandle = enterExitHandle ();
+	auto enterExitHandle = enterExitHandle ();
 	int enterExitMask = OS.GDK_ENTER_NOTIFY_MASK | OS.GDK_LEAVE_NOTIFY_MASK;
 	OS.gtk_widget_add_events (enterExitHandle, enterExitMask);
 	OS.g_signal_connect_closure_by_id (enterExitHandle, display.signalIds [ENTER_NOTIFY_EVENT], 0, display.closures [ENTER_NOTIFY_EVENT], false);
@@ -234,19 +276,19 @@
 	* The signal is hooked to the fixedHandle to catch events sent to
 	* lightweight widgets.
 	*/
-	int /*long*/ blockHandle = fixedHandle != 0 ? fixedHandle : eventHandle;
+	auto blockHandle = fixedHandle !is null ? fixedHandle : eventHandle;
 	OS.g_signal_connect_closure_by_id (blockHandle, display.signalIds [BUTTON_PRESS_EVENT], 0, display.closures [BUTTON_PRESS_EVENT_INVERSE], true);
 	OS.g_signal_connect_closure_by_id (blockHandle, display.signalIds [BUTTON_RELEASE_EVENT], 0, display.closures [BUTTON_RELEASE_EVENT_INVERSE], true);
 	OS.g_signal_connect_closure_by_id (blockHandle, display.signalIds [MOTION_NOTIFY_EVENT], 0, display.closures [MOTION_NOTIFY_EVENT_INVERSE], true);
 
 	/* Connect the event_after signal for both key and mouse */
 	OS.g_signal_connect_closure_by_id (eventHandle, display.signalIds [EVENT_AFTER], 0, display.closures [EVENT_AFTER], false);
-	if (focusHandle != eventHandle) {
+	if (focusHandle !is eventHandle) {
 		OS.g_signal_connect_closure_by_id (focusHandle, display.signalIds [EVENT_AFTER], 0, display.closures [EVENT_AFTER], false);
 	}
 
 	/* Connect the paint signal */
-	int /*long*/ paintHandle = paintHandle ();
+	auto paintHandle = paintHandle ();
 	int paintMask = OS.GDK_EXPOSURE_MASK | OS.GDK_VISIBILITY_NOTIFY_MASK;
 	OS.gtk_widget_add_events (paintHandle, paintMask);
 	OS.g_signal_connect_closure_by_id (paintHandle, display.signalIds [EXPOSE_EVENT], 0, display.closures [EXPOSE_EVENT_INVERSE], false);
@@ -256,43 +298,44 @@
 	/* Connect the Input Method signals */
 	OS.g_signal_connect_closure_by_id (handle, display.signalIds [REALIZE], 0, display.closures [REALIZE], true);
 	OS.g_signal_connect_closure_by_id (handle, display.signalIds [UNREALIZE], 0, display.closures [UNREALIZE], false);
-	int /*long*/ imHandle = imHandle ();
-	if (imHandle != 0) {
-		OS.g_signal_connect_closure (imHandle, OS.commit, display.closures [COMMIT], false);
-		OS.g_signal_connect_closure (imHandle, OS.preedit_changed, display.closures [PREEDIT_CHANGED], false);
+	auto imHandle = imHandle ();
+	if (imHandle !is null) {
+		OS.g_signal_connect_closure (imHandle, OS.commit.ptr, display.closures [COMMIT], false);
+		OS.g_signal_connect_closure (imHandle, OS.preedit_changed.ptr, display.closures [PREEDIT_CHANGED], false);
 	}
 
 	OS.g_signal_connect_closure_by_id (paintHandle, display.signalIds [STYLE_SET], 0, display.closures [STYLE_SET], false);
 
-	int /*long*/ topHandle = topHandle ();
+	auto topHandle = topHandle ();
 	OS.g_signal_connect_closure_by_id (topHandle, display.signalIds [MAP], 0, display.closures [MAP], true);
 }
 
 int /*long*/ hoverProc (int /*long*/ widget) {
-	int [] x = new int [1], y = new int [1], mask = new int [1];
-	OS.gdk_window_get_pointer (0, x, y, mask);
-	sendMouseEvent (SWT.MouseHover, 0, /*time*/0, x [0], y [0], false, mask [0]);
+	int x, y;
+    GdkModifierType mask;
+	OS.gdk_window_get_pointer (null, &x, &y, &mask);
+	sendMouseEvent (SWT.MouseHover, 0, /*time*/0, x , y , false, mask );
 	/* Always return zero in order to cancel the hover timer */
 	return 0;
 }
 
-int /*long*/ topHandle() {
-	if (fixedHandle != 0) return fixedHandle;
+GtkWidget* topHandle() {
+	if (fixedHandle !is null) return fixedHandle;
 	return super.topHandle ();
 }
 
-int /*long*/ paintHandle () {
-	int /*long*/ topHandle = topHandle ();
-	int /*long*/ paintHandle = handle;
-	while (paintHandle != topHandle) {
-		if ((OS.GTK_WIDGET_FLAGS (paintHandle) & OS.GTK_NO_WINDOW) == 0) break;
+GtkWidget* paintHandle () {
+	auto topHandle = topHandle ();
+	auto paintHandle = handle;
+	while (paintHandle !is topHandle) {
+		if ((OS.GTK_WIDGET_FLAGS (paintHandle) & OS.GTK_NO_WINDOW) is 0) break;
 		paintHandle = OS.gtk_widget_get_parent (paintHandle);
 	}
 	return paintHandle;
 }
 
-int /*long*/ paintWindow () {
-	int /*long*/ paintHandle = paintHandle ();
+GdkWindow* paintWindow () {
+	auto paintHandle = paintHandle ();
 	OS.gtk_widget_realize (paintHandle);
 	return OS.GTK_WIDGET_WINDOW (paintHandle);
 }
@@ -321,7 +364,7 @@
  * @see #getBorderWidth
  * @see #getBounds
  * @see #getSize
- * @see #pack(boolean)
+ * @see #pack(bool)
  * @see "computeTrim, getClientArea for controls that implement them"
  */
 public Point computeSize (int wHint, int hHint) {
@@ -336,7 +379,7 @@
 Control[] computeTabList() {
 	if (isTabGroup()) {
 		if (getVisible() && getEnabled()) {
-			return new Control[] {this};
+			return [this];
 		}
 	}
 	return new Control[0];
@@ -344,13 +387,13 @@
 
 Control computeTabRoot () {
 	Control[] tabList = parent._getTabList();
-	if (tabList != null) {
+	if (tabList !is null) {
 		int index = 0;
 		while (index < tabList.length) {
-			if (tabList [index] == this) break;
+			if (tabList [index] is this) break;
 			index++;
 		}
-		if (index == tabList.length) {
+		if (index is tabList.length) {
 			if (isTabGroup ()) return this;
 		}
 	}
@@ -363,34 +406,34 @@
 
 void checkBackground () {
 	Shell shell = getShell ();
-	if (this == shell) return;
+	if (this is shell) return;
 	state &= ~PARENT_BACKGROUND;
 	Composite composite = parent;
 	do {
 		int mode = composite.backgroundMode;
-		if (mode != SWT.INHERIT_NONE) {
-			if (mode == SWT.INHERIT_DEFAULT) {
+		if (mode !is SWT.INHERIT_NONE) {
+			if (mode is SWT.INHERIT_DEFAULT) {
 				Control control = this;
 				do {
-					if ((control.state & THEME_BACKGROUND) == 0) {
+					if ((control.state & THEME_BACKGROUND) is 0) {
 						return;
 					}
 					control = control.parent;
-				} while (control != composite);
+				} while (control !is composite);
 			}
 			state |= PARENT_BACKGROUND;
 			return;
 		}
-		if (composite == shell) break;
+		if (composite is shell) break;
 		composite = composite.parent;
 	} while (true);
 }
 
 void checkBorder () {
-	if (getBorderWidth () == 0) style &= ~SWT.BORDER;
+	if (getBorderWidth () is 0) style &= ~SWT.BORDER;
 }
 
-int /*long*/ childStyle () {
+GtkStyle* childStyle () {
 	return parent.childStyle ();
 }
 
@@ -399,7 +442,7 @@
 	checkOrientation (parent);
 	super.createWidget (index);
 	checkBackground ();
-	if ((state & PARENT_BACKGROUND) != 0) setBackground ();
+	if ((state & PARENT_BACKGROUND) !is 0) setBackground ();
 	checkBuffered ();
 	showWidget ();
 	setInitialBounds ();
@@ -439,32 +482,32 @@
  * @see #getBorderWidth
  * @see #getBounds
  * @see #getSize
- * @see #pack(boolean)
+ * @see #pack(bool)
  * @see "computeTrim, getClientArea for controls that implement them"
  */
-public Point computeSize (int wHint, int hHint, boolean changed) {
+public Point computeSize (int wHint, int hHint, bool changed) {
 	checkWidget();
-	if (wHint != SWT.DEFAULT && wHint < 0) wHint = 0;
-	if (hHint != SWT.DEFAULT && hHint < 0) hHint = 0;
+	if (wHint !is SWT.DEFAULT && wHint < 0) wHint = 0;
+	if (hHint !is SWT.DEFAULT && hHint < 0) hHint = 0;
 	return computeNativeSize (handle, wHint, hHint, changed);
 }
 
-Point computeNativeSize (int /*long*/ h, int wHint, int hHint, boolean changed) {
+Point computeNativeSize (GtkWidget* h, int wHint, int hHint, bool changed) {
 	int width = wHint, height = hHint;
-	if (wHint == SWT.DEFAULT && hHint == SWT.DEFAULT) {
-		GtkRequisition requisition = new GtkRequisition ();
+	if (wHint is SWT.DEFAULT && hHint is SWT.DEFAULT) {
+		GtkRequisition* requisition = new GtkRequisition ();
 		gtk_widget_size_request (h, requisition);
 		width = OS.GTK_WIDGET_REQUISITION_WIDTH (h);
 		height = OS.GTK_WIDGET_REQUISITION_HEIGHT (h);
-	} else if (wHint == SWT.DEFAULT || hHint == SWT.DEFAULT) {
-		int [] reqWidth = new int [1], reqHeight = new int [1];
-		OS.gtk_widget_get_size_request (h, reqWidth, reqHeight);
+	} else if (wHint is SWT.DEFAULT || hHint is SWT.DEFAULT) {
+		int reqWidth, reqHeight;
+		OS.gtk_widget_get_size_request (h, &reqWidth, &reqHeight);
 		OS.gtk_widget_set_size_request (h, wHint, hHint);
-		GtkRequisition requisition = new GtkRequisition ();
+		GtkRequisition* requisition = new GtkRequisition ();
 		gtk_widget_size_request (h, requisition);
-		OS.gtk_widget_set_size_request (h, reqWidth [0], reqHeight [0]);
-		width = wHint == SWT.DEFAULT ? requisition.width : wHint;
-		height = hHint == SWT.DEFAULT ? requisition.height : hHint;
+		OS.gtk_widget_set_size_request (h, reqWidth, reqHeight);
+		width = wHint is SWT.DEFAULT ? requisition.width : wHint;
+		height = hHint is SWT.DEFAULT ? requisition.height : hHint;
 	}
 	return new Point (width, height);
 }
@@ -475,10 +518,10 @@
 	* topHandle.  Note that all calls to gtk_widget_size_allocate()
 	* must be preceded by a call to gtk_widget_size_request().
 	*/
-	int /*long*/ topHandle = topHandle ();
-	GtkRequisition requisition = new GtkRequisition ();
+	auto topHandle = topHandle ();
+	GtkRequisition* requisition = new GtkRequisition ();
 	gtk_widget_size_request (topHandle, requisition);
-	GtkAllocation allocation = new GtkAllocation ();
+	GtkAllocation* allocation = new GtkAllocation ();
 	allocation.x = OS.GTK_WIDGET_X (topHandle);
 	allocation.y = OS.GTK_WIDGET_Y (topHandle);
 	allocation.width = OS.GTK_WIDGET_WIDTH (topHandle);
@@ -505,7 +548,7 @@
  */
 public Accessible getAccessible () {
 	checkWidget ();
-	if (accessible == null) {
+	if (accessible is null) {
 		accessible = Accessible.internal_new_Accessible (this);
 	}
 	return accessible;
@@ -526,11 +569,11 @@
  */
 public Rectangle getBounds () {
 	checkWidget();
-	int /*long*/ topHandle = topHandle ();
+	auto topHandle = topHandle ();
 	int x = OS.GTK_WIDGET_X (topHandle);
 	int y = OS.GTK_WIDGET_Y (topHandle);
-	int width = (state & ZERO_WIDTH) != 0 ? 0 : OS.GTK_WIDGET_WIDTH (topHandle);
-	int height = (state & ZERO_HEIGHT) != 0 ? 0 : OS.GTK_WIDGET_HEIGHT (topHandle);
+	int width = (state & ZERO_WIDTH) !is 0 ? 0 : OS.GTK_WIDGET_WIDTH (topHandle);
+	int height = (state & ZERO_HEIGHT) !is 0 ? 0 : OS.GTK_WIDGET_HEIGHT (topHandle);
 	return new Rectangle (x, y, width, height);
 }
 
@@ -554,7 +597,7 @@
  */
 public void setBounds (Rectangle rect) {
 	checkWidget ();
-	if (rect == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (rect is null) error (SWT.ERROR_NULL_ARGUMENT);
 	setBounds (rect.x, rect.y, Math.max (0, rect.width), Math.max (0, rect.height), true, true);
 }
 
@@ -586,13 +629,13 @@
 	setBounds (x, y, Math.max (0, width), Math.max (0, height), true, true);
 }
 
-void markLayout (boolean changed, boolean all) {
+void markLayout (bool changed, bool all) {
 	/* Do nothing */
 }
 
 void moveHandle (int x, int y) {
-	int /*long*/ topHandle = topHandle ();
-	int /*long*/ parentHandle = parent.parentingHandle ();
+	auto topHandle = topHandle ();
+	auto parentHandle = parent.parentingHandle ();
 	/*
 	* Feature in GTK.  Calling gtk_fixed_move() to move a child causes
 	* the whole parent to redraw.  This is a performance problem. The
@@ -603,43 +646,43 @@
 	*/
 	int flags = OS.GTK_WIDGET_FLAGS (parentHandle);
 	OS.GTK_WIDGET_UNSET_FLAGS (parentHandle, OS.GTK_VISIBLE);
-	OS.gtk_fixed_move (parentHandle, topHandle, x, y);
-	if ((flags & OS.GTK_VISIBLE) != 0) {
+	OS.gtk_fixed_move (cast(GtkFixed*)parentHandle, topHandle, x, y);
+	if ((flags & OS.GTK_VISIBLE) !is 0) {
 		OS.GTK_WIDGET_SET_FLAGS (parentHandle, OS.GTK_VISIBLE);
 	}
 }
 
 void resizeHandle (int width, int height) {
-	int /*long*/ topHandle = topHandle ();
+	auto topHandle = topHandle ();
 	OS.gtk_widget_set_size_request (topHandle, width, height);
-	if (topHandle != handle) OS.gtk_widget_set_size_request (handle, width, height);
+	if (topHandle !is handle) OS.gtk_widget_set_size_request (handle, width, height);
 }
 
-int setBounds (int x, int y, int width, int height, boolean move, boolean resize) {
-	int /*long*/ topHandle = topHandle ();
-	boolean sameOrigin = true, sameExtent = true;
+int setBounds (int x, int y, int width, int height, bool move, bool resize) {
+	auto topHandle = topHandle ();
+	bool sameOrigin = true, sameExtent = true;
 	if (move) {
 		int oldX = OS.GTK_WIDGET_X (topHandle);
 		int oldY = OS.GTK_WIDGET_Y (topHandle);
-		sameOrigin = x == oldX && y == oldY;
+		sameOrigin = x is oldX && y is oldY;
 		if (!sameOrigin) {
-			if (enableWindow != 0) {
+			if (enableWindow !is null) {
 				OS.gdk_window_move (enableWindow, x, y);
 			}
 			moveHandle (x, y);
 		}
 	}
 	if (resize) {
-		int oldWidth = (state & ZERO_WIDTH) != 0 ? 0 : OS.GTK_WIDGET_WIDTH (topHandle);
-		int oldHeight = (state & ZERO_HEIGHT) != 0 ? 0 : OS.GTK_WIDGET_HEIGHT (topHandle);
-		sameExtent = width == oldWidth && height == oldHeight;
-		if (!sameExtent && !(width == 0 && height == 0)) {
+		int oldWidth = (state & ZERO_WIDTH) !is 0 ? 0 : OS.GTK_WIDGET_WIDTH (topHandle);
+		int oldHeight = (state & ZERO_HEIGHT) !is 0 ? 0 : OS.GTK_WIDGET_HEIGHT (topHandle);
+		sameExtent = width is oldWidth && height is oldHeight;
+		if (!sameExtent && !(width is 0 && height is 0)) {
 			int newWidth = Math.max (1, width);
 			int newHeight = Math.max (1, height);
-			if (redrawWindow != 0) {
+			if (redrawWindow !is null) {
 				OS.gdk_window_resize (redrawWindow, newWidth, newHeight);
 			}
-			if (enableWindow != 0) {
+			if (enableWindow !is null) {
 				OS.gdk_window_resize (enableWindow, newWidth, newHeight);
 			}
 			resizeHandle (newWidth, newHeight);
@@ -651,9 +694,9 @@
 		* all calls to gtk_widget_size_allocate() must be preceded by
 		* a call to gtk_widget_size_request().
 		*/
-		GtkRequisition requisition = new GtkRequisition ();
+		GtkRequisition* requisition = new GtkRequisition ();
 		gtk_widget_size_request (topHandle, requisition);
-		GtkAllocation allocation = new GtkAllocation ();
+		GtkAllocation* allocation = new GtkAllocation ();
 		if (move) {
 			allocation.x = x;
 			allocation.y = y;
@@ -676,16 +719,16 @@
 	* when they are resized larger.
 	*/
 	if (!sameExtent) {
-		state = (width == 0) ? state | ZERO_WIDTH : state & ~ZERO_WIDTH;
-		state = (height == 0) ? state | ZERO_HEIGHT : state & ~ZERO_HEIGHT;
-		if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) != 0) {
-			if (enableWindow != 0) {
+		state = (width is 0) ? state | ZERO_WIDTH : state & ~ZERO_WIDTH;
+		state = (height is 0) ? state | ZERO_HEIGHT : state & ~ZERO_HEIGHT;
+		if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) !is 0) {
+			if (enableWindow !is null) {
 				OS.gdk_window_hide (enableWindow);
 			}
 			OS.gtk_widget_hide (topHandle);
 		} else {
-			if ((state & HIDDEN) == 0) {
-				if (enableWindow != 0) {
+			if ((state & HIDDEN) is 0) {
+				if (enableWindow !is null) {
 					OS.gdk_window_show_unraised (enableWindow);
 				}
 				OS.gtk_widget_show (topHandle);
@@ -695,7 +738,7 @@
 	int result = 0;
 	if (move && !sameOrigin) {
 		Control control = findBackgroundControl ();
-		if (control != null && control.backgroundImage != null) {
+		if (control !is null && control.backgroundImage !is null) {
 			if (isVisible ()) redrawWidget (0, 0, 0, 0, true, true, true);
 		}
 		sendEvent (SWT.Move);
@@ -723,7 +766,7 @@
  */
 public Point getLocation () {
 	checkWidget();
-	int /*long*/ topHandle = topHandle ();
+	auto topHandle = topHandle ();
 	int x = OS.GTK_WIDGET_X (topHandle);
 	int y = OS.GTK_WIDGET_Y (topHandle);
 	return new Point (x, y);
@@ -745,7 +788,7 @@
  */
 public void setLocation (Point location) {
 	checkWidget ();
-	if (location == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (location is null) error (SWT.ERROR_NULL_ARGUMENT);
 	setBounds (location.x, location.y, 0, 0, true, false);
 }
 
@@ -784,9 +827,9 @@
  */
 public Point getSize () {
 	checkWidget();
-	int /*long*/ topHandle = topHandle ();
-	int width = (state & ZERO_WIDTH) != 0 ? 0 : OS.GTK_WIDGET_WIDTH (topHandle);
-	int height = (state & ZERO_HEIGHT) != 0 ? 0 : OS.GTK_WIDGET_HEIGHT (topHandle);
+	auto topHandle = topHandle ();
+	int width = (state & ZERO_WIDTH) !is 0 ? 0 : OS.GTK_WIDGET_WIDTH (topHandle);
+	int height = (state & ZERO_HEIGHT) !is 0 ? 0 : OS.GTK_WIDGET_HEIGHT (topHandle);
 	return new Point (width, height);
 }
 
@@ -810,26 +853,25 @@
  */
 public void setSize (Point size) {
 	checkWidget ();
-	if (size == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (size is null) error (SWT.ERROR_NULL_ARGUMENT);
 	setBounds (0, 0, Math.max (0, size.x), Math.max (0, size.y), false, true);
 }
 
 void setRelations () {
-	int /*long*/ parentHandle = parent.parentingHandle ();
-	int /*long*/ list = OS.gtk_container_get_children (parentHandle);
-	if (list == 0) return;
+	auto parentHandle = parent.parentingHandle ();
+	auto list = OS.gtk_container_get_children (cast(GtkContainer*)parentHandle);
+	if (list is null) return;
 	int count = OS.g_list_length (list);
 	if (count > 1) {
 		/*
 		 * the receiver is the last item in the list, so its predecessor will
 		 * be the second-last item in the list
 		 */
-		int /*long*/ handle = OS.g_list_nth_data (list, count - 2);
-		if (handle != 0) {
+		auto handle = cast(GtkWidget*) OS.g_list_nth_data (list, count - 2);
+		if (handle !is null) {
 			Widget widget = display.getWidget (handle);
-			if (widget != null && widget != this) {
-				if (widget instanceof Control) {
-					Control sibling = (Control)widget;
+			if (widget !is null && widget !is this) {
+				if (auto sibling = cast(Control)widget ) {
 					sibling.addRelation (this);
 				}
 			}
@@ -860,10 +902,10 @@
 }
 
 /*
- * Answers a boolean indicating whether a Label that precedes the receiver in
+ * Answers a bool indicating whether a Label that precedes the receiver in
  * a layout should be read by screen readers as the recevier's label.
  */
-boolean isDescribedByLabel () {
+bool isDescribedByLabel () {
 	return true;
 }
 
@@ -889,9 +931,9 @@
  */
 public void moveAbove (Control control) {
 	checkWidget();
-	if (control != null) {
+	if (control !is null) {
 		if (control.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
-		if (parent != control.parent) return;
+		if (parent !is control.parent) return;
 	}
 	setZOrder (control, true, true);
 }
@@ -918,9 +960,9 @@
  */
 public void moveBelow (Control control) {
 	checkWidget();
-	if (control != null) {
+	if (control !is null) {
 		if (control.isDisposed ()) error(SWT.ERROR_INVALID_ARGUMENT);
-		if (parent != control.parent) return;
+		if (parent !is control.parent) return;
 	}
 	setZOrder (control, false, true);
 }
@@ -935,7 +977,7 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
- * @see #computeSize(int, int, boolean)
+ * @see #computeSize(int, int, bool)
  */
 public void pack () {
 	pack (true);
@@ -960,9 +1002,9 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
- * @see #computeSize(int, int, boolean)
+ * @see #computeSize(int, int, bool)
  */
-public void pack (boolean changed) {
+public void pack (bool changed) {
 	setSize (computeSize (SWT.DEFAULT, SWT.DEFAULT, changed));
 }
 
@@ -999,10 +1041,10 @@
  */
 public Point toControl (int x, int y) {
 	checkWidget ();
-	int /*long*/ window = eventWindow ();
-	int [] origin_x = new int [1], origin_y = new int [1];
-	OS.gdk_window_get_origin (window, origin_x, origin_y);
-	return new Point (x - origin_x [0], y - origin_y [0]);
+	auto window = eventWindow ();
+	int origin_x, origin_y;
+	OS.gdk_window_get_origin (window, &origin_x, &origin_y);
+	return new Point (x - origin_x , y - origin_y );
 }
 
 /**
@@ -1023,7 +1065,7 @@
  */
 public Point toControl (Point point) {
 	checkWidget ();
-	if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (point is null) error (SWT.ERROR_NULL_ARGUMENT);
 	return toControl (point.x, point.y);
 }
 
@@ -1045,10 +1087,10 @@
  */
 public Point toDisplay (int x, int y) {
 	checkWidget();
-	int /*long*/ window = eventWindow ();
-	int [] origin_x = new int [1], origin_y = new int [1];
-	OS.gdk_window_get_origin (window, origin_x, origin_y);
-	return new Point (origin_x [0] + x, origin_y [0] + y);
+	auto window = eventWindow ();
+	int origin_x, origin_y;
+	OS.gdk_window_get_origin (window, &origin_x, &origin_y);
+	return new Point (origin_x + x, origin_y + y);
 }
 
 /**
@@ -1069,7 +1111,7 @@
  */
 public Point toDisplay (Point point) {
 	checkWidget();
-	if (point == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (point is null) error (SWT.ERROR_NULL_ARGUMENT);
 	return toDisplay (point.x, point.y);
 }
 
@@ -1094,7 +1136,7 @@
  */
 public void addControlListener(ControlListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Resize,typedListener);
 	addListener (SWT.Move,typedListener);
@@ -1123,7 +1165,7 @@
  */
 public void addDragDetectListener (DragDetectListener listener) {
 	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.DragDetect,typedListener);
 }
@@ -1149,7 +1191,7 @@
  */
 public void addFocusListener(FocusListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener(SWT.FocusIn,typedListener);
 	addListener(SWT.FocusOut,typedListener);
@@ -1176,7 +1218,7 @@
  */
 public void addHelpListener (HelpListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Help, typedListener);
 }
@@ -1213,7 +1255,7 @@
  */
 public void addKeyListener(KeyListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener(SWT.KeyUp,typedListener);
 	addListener(SWT.KeyDown,typedListener);
@@ -1242,7 +1284,7 @@
  */
 public void addMenuDetectListener (MenuDetectListener listener) {
 	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.MenuDetect, typedListener);
 }
@@ -1268,7 +1310,7 @@
  */
 public void addMouseListener(MouseListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener(SWT.MouseDown,typedListener);
 	addListener(SWT.MouseUp,typedListener);
@@ -1296,7 +1338,7 @@
  */
 public void addMouseMoveListener(MouseMoveListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener(SWT.MouseMove,typedListener);
 }
@@ -1322,7 +1364,7 @@
  */
 public void addMouseTrackListener (MouseTrackListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.MouseEnter,typedListener);
 	addListener (SWT.MouseExit,typedListener);
@@ -1352,7 +1394,7 @@
  */
 public void addMouseWheelListener (MouseWheelListener listener) {
 	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.MouseWheel, typedListener);
 }
@@ -1378,7 +1420,7 @@
  */
 public void addPaintListener(PaintListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener(SWT.Paint,typedListener);
 }
@@ -1407,7 +1449,7 @@
  */
 public void addTraverseListener (TraverseListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
 	TypedListener typedListener = new TypedListener (listener);
 	addListener (SWT.Traverse,typedListener);
 }
@@ -1431,8 +1473,8 @@
  */
 public void removeControlListener (ControlListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.Move, listener);
 	eventTable.unhook (SWT.Resize, listener);
 }
@@ -1458,8 +1500,8 @@
  */
 public void removeDragDetectListener(DragDetectListener listener) {
 	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.DragDetect, listener);
 }
 
@@ -1482,8 +1524,8 @@
  */
 public void removeFocusListener(FocusListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.FocusIn, listener);
 	eventTable.unhook (SWT.FocusOut, listener);
 }
@@ -1506,8 +1548,8 @@
  */
 public void removeHelpListener (HelpListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.Help, listener);
 }
 /**
@@ -1529,8 +1571,8 @@
  */
 public void removeKeyListener(KeyListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.KeyUp, listener);
 	eventTable.unhook (SWT.KeyDown, listener);
 }
@@ -1556,8 +1598,8 @@
  */
 public void removeMenuDetectListener (MenuDetectListener listener) {
 	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.MenuDetect, listener);
 }
 /**
@@ -1579,8 +1621,8 @@
  */
 public void removeMouseListener (MouseListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.MouseDown, listener);
 	eventTable.unhook (SWT.MouseUp, listener);
 	eventTable.unhook (SWT.MouseDoubleClick, listener);
@@ -1604,8 +1646,8 @@
  */
 public void removeMouseMoveListener(MouseMoveListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.MouseMove, listener);
 }
 
@@ -1628,8 +1670,8 @@
  */
 public void removeMouseTrackListener(MouseTrackListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.MouseEnter, listener);
 	eventTable.unhook (SWT.MouseExit, listener);
 	eventTable.unhook (SWT.MouseHover, listener);
@@ -1656,8 +1698,8 @@
  */
 public void removeMouseWheelListener (MouseWheelListener listener) {
 	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.MouseWheel, listener);
 }
 
@@ -1680,8 +1722,8 @@
  */
 public void removePaintListener(PaintListener listener) {
 	checkWidget();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook(SWT.Paint, listener);
 }
 
@@ -1690,12 +1732,12 @@
  */
 void removeRelation () {
 	if (!isDescribedByLabel ()) return;		/* there will not be any */
-	int /*long*/ accessible = OS.gtk_widget_get_accessible (handle);
-	if (accessible == 0) return;
-	int /*long*/ set = ATK.atk_object_ref_relation_set (accessible);
+	auto accessible = OS.gtk_widget_get_accessible (handle);
+	if (accessible is null) return;
+	auto set = ATK.atk_object_ref_relation_set (accessible);
 	int count = ATK.atk_relation_set_get_n_relations (set);
 	for (int i = 0; i < count; i++) {
-		int /*long*/ relation = ATK.atk_relation_set_get_relation (set, 0);
+		auto relation = ATK.atk_relation_set_get_relation (set, 0);
 		ATK.atk_relation_set_remove (set, relation);
 	}
 	OS.g_object_unref (set);
@@ -1720,8 +1762,8 @@
  */
 public void removeTraverseListener(TraverseListener listener) {
 	checkWidget ();
-	if (listener == null) error (SWT.ERROR_NULL_ARGUMENT);
-	if (eventTable == null) return;
+	if (listener is null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (eventTable is null) return;
 	eventTable.unhook (SWT.Traverse, listener);
 }
 
@@ -1761,9 +1803,9 @@
  *
  * @since 3.3
  */
-public boolean dragDetect (Event event) {
+public bool dragDetect (Event event) {
 	checkWidget ();
-	if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (event is null) error (SWT.ERROR_NULL_ARGUMENT);
 	return dragDetect (event.button, event.count, event.stateMask, event.x, event.y);
 }
 
@@ -1803,51 +1845,51 @@
  *
  * @since 3.3
  */
-public boolean dragDetect (MouseEvent event) {
+public bool dragDetect (MouseEvent event) {
 	checkWidget ();
-	if (event == null) error (SWT.ERROR_NULL_ARGUMENT);
+	if (event is null) error (SWT.ERROR_NULL_ARGUMENT);
 	return dragDetect (event.button, event.count, event.stateMask, event.x, event.y);
 }
 
-boolean dragDetect (int button, int count, int stateMask, int x, int y) {
-	if (button != 1 || count != 1) return false;
+bool dragDetect (int button, int count, int stateMask, int x, int y) {
+	if (button !is 1 || count !is 1) return false;
 	if (!dragDetect (x, y, false, null)) return false;
 	return sendDragEvent (button, stateMask, x, y, true);
 }
 
-boolean dragDetect (int x, int y, boolean filter, boolean [] consume) {
-	boolean quit = false, dragging = false;
+bool dragDetect (int x, int y, bool filter, bool [] consume) {
+	bool quit = false, dragging = false;
 	while (!quit) {
-		int /*long*/ eventPtr = 0;
+		GdkEvent* eventPtr;
 		while (true) {
 			eventPtr = OS.gdk_event_get ();
-			if (eventPtr != 0) {
+			if (eventPtr !is null) {
 				break;
 			} else {
 				try {Thread.sleep(50);} catch (Exception ex) {}
 			}
 		}
-		switch (OS.GDK_EVENT_TYPE (eventPtr)) {
+		switch (cast(int)OS.GDK_EVENT_TYPE (eventPtr)) {
 			case OS.GDK_MOTION_NOTIFY: {
-				GdkEventMotion gdkMotionEvent = new GdkEventMotion ();
-				OS.memmove (gdkMotionEvent, eventPtr, GdkEventMotion.sizeof);
-				if ((gdkMotionEvent.state & OS.GDK_BUTTON1_MASK) != 0) {
-					if (OS.gtk_drag_check_threshold (handle, x, y, (int) gdkMotionEvent.x, (int) gdkMotionEvent.y)) {
+				GdkEventMotion* gdkMotionEvent = new GdkEventMotion ();
+				memmove (gdkMotionEvent, eventPtr, GdkEventMotion.sizeof);
+				if ((gdkMotionEvent.state & OS.GDK_BUTTON1_MASK) !is 0) {
+					if (OS.gtk_drag_check_threshold (handle, x, y, cast(int) gdkMotionEvent.x, cast(int) gdkMotionEvent.y)) {
 						dragging = true;
 						quit = true;
 					}
 				} else {
 					quit = true;
 				}
-				int [] newX = new int [1], newY = new int [1];
-				OS.gdk_window_get_pointer (gdkMotionEvent.window, newX, newY, null);
+				int newX, newY;
+				OS.gdk_window_get_pointer (gdkMotionEvent.window, &newX, &newY, null);
 				break;
 			}
 			case OS.GDK_KEY_PRESS:
 			case OS.GDK_KEY_RELEASE: {
-				GdkEventKey gdkEvent = new GdkEventKey ();
-				OS.memmove (gdkEvent, eventPtr, GdkEventKey.sizeof);
-				if (gdkEvent.keyval == OS.GDK_Escape) quit = true;
+				GdkEventKey* gdkEvent = new GdkEventKey ();
+				memmove (gdkEvent, eventPtr, GdkEventKey.sizeof);
+				if (gdkEvent.keyval is OS.GDK_Escape) quit = true;
 				break;
 			}
 			case OS.GDK_BUTTON_RELEASE:
@@ -1866,21 +1908,21 @@
 	return dragging;
 }
 
-boolean filterKey (int keyval, int /*long*/ event) {
-	int /*long*/ imHandle = imHandle ();
-	if (imHandle != 0) {
-		return OS.gtk_im_context_filter_keypress (imHandle, event);
+bool filterKey (int keyval, GdkEventKey* event) {
+	auto imHandle = imHandle ();
+	if (imHandle !is null) {
+		return cast(bool)OS.gtk_im_context_filter_keypress (imHandle, event);
 	}
 	return false;
 }
 
 Control findBackgroundControl () {
-	if ((state & BACKGROUND) != 0 || backgroundImage != null) return this;
-	return (state & PARENT_BACKGROUND) != 0 ? parent.findBackgroundControl () : null;
+	if ((state & BACKGROUND) !is 0 || backgroundImage !is null) return this;
+	return (state & PARENT_BACKGROUND) !is 0 ? parent.findBackgroundControl () : null;
 }
 
 Menu [] findMenus (Control control) {
-	if (menu != null && this != control) return new Menu [] {menu};
+	if (menu !is null && this !is control) return [menu];
 	return new Menu [0];
 }
 
@@ -1889,21 +1931,21 @@
 	oldDecorations.fixDecorations (newDecorations, this, menus);
 }
 
-int /*long*/ fixedMapProc (int /*long*/ widget) {
+int /*long*/ fixedMapProc (GtkWidget* widget) {
 	OS.GTK_WIDGET_SET_FLAGS (widget, OS.GTK_MAPPED);
-	int /*long*/ widgetList = OS.gtk_container_get_children (widget);
-	if (widgetList != 0) {
-		int /*long*/ widgets = widgetList;
-		while (widgets != 0) {
-			int /*long*/ child = OS.g_list_data (widgets);
+	auto widgetList = OS.gtk_container_get_children (cast(GtkContainer*)widget);
+	if (widgetList !is null) {
+		auto widgets = widgetList;
+		while (widgets !is null) {
+			auto child = cast(GtkWidget*)OS.g_list_data (widgets);
 			if (OS.GTK_WIDGET_VISIBLE (child) && OS.gtk_widget_get_child_visible (child) && !OS.GTK_WIDGET_MAPPED (child)) {
 				OS.gtk_widget_map (child);
 			}
-			widgets = OS.g_list_next (widgets);
+			widgets = cast(GList*)OS.g_list_next (widgets);
 		}
 		OS.g_list_free (widgetList);
 	}
-	if ((OS.GTK_WIDGET_FLAGS (widget) & OS.GTK_NO_WINDOW) == 0) {
+	if ((OS.GTK_WIDGET_FLAGS (widget) & OS.GTK_NO_WINDOW) is 0) {
 		OS.gdk_window_show_unraised (OS.GTK_WIDGET_WINDOW (widget));
 	}
 	return 0;
@@ -1922,9 +1964,9 @@
  *
  * @see #setFocus
  */
-public boolean forceFocus () {
+public bool forceFocus () {
 	checkWidget();
-	if (display.focusEvent == SWT.FocusOut) return false;
+	if (display.focusEvent is SWT.FocusOut) return false;
 	Shell shell = getShell ();
 	shell.setSavedFocus (this);
 	if (!isEnabled () || !isVisible ()) return false;
@@ -1932,18 +1974,18 @@
 	return forceFocus (focusHandle ());
 }
 
-boolean forceFocus (int /*long*/ focusHandle) {
+bool forceFocus (GtkWidget* focusHandle) {
 	/* When the control is zero sized it must be realized */
 	OS.gtk_widget_realize (focusHandle);
 	OS.gtk_widget_grab_focus (focusHandle);
 	Shell shell = getShell ();
-	int /*long*/ shellHandle = shell.shellHandle;
-	int /*long*/ handle = OS.gtk_window_get_focus (shellHandle);
-	while (handle != 0) {
-		if (handle == focusHandle) return true;
+	auto shellHandle = shell.shellHandle;
+	auto handle = OS.gtk_window_get_focus (cast(GtkWindow*)shellHandle);
+	while (handle !is null) {
+		if (handle is focusHandle) return true;
 		Widget widget = display.getWidget (handle);
-		if (widget != null && widget instanceof Control) {
-			return widget == this;
+		if (widget !is null && (null !is cast(Control)widget)) {
+			return widget is this;
 		}
 		handle = OS.gtk_widget_get_parent (handle);
 	}
@@ -1963,11 +2005,11 @@
 public Color getBackground () {
 	checkWidget();
 	Control control = findBackgroundControl ();
-	if (control == null) control = this;
+	if (control is null) control = this;
 	return Color.gtk_new (display, control.getBackgroundColor ());
 }
 
-GdkColor getBackgroundColor () {
+GdkColor* getBackgroundColor () {
 	return getBgColor ();
 }
 
@@ -1986,22 +2028,22 @@
 public Image getBackgroundImage () {
 	checkWidget ();
 	Control control = findBackgroundControl ();
-	if (control == null) control = this;
+	if (control is null) control = this;
 	return control.backgroundImage;
 }
 
-GdkColor getBgColor () {
-	int /*long*/ fontHandle = fontHandle ();
+GdkColor* getBgColor () {
+	auto fontHandle = fontHandle ();
 	OS.gtk_widget_realize (fontHandle);
-	GdkColor color = new GdkColor ();
+	GdkColor* color = new GdkColor ();
 	OS.gtk_style_get_bg (OS.gtk_widget_get_style (fontHandle), OS.GTK_STATE_NORMAL, color);
 	return color;
 }
 
-GdkColor getBaseColor () {
-	int /*long*/ fontHandle = fontHandle ();
+GdkColor* getBaseColor () {
+	auto fontHandle = fontHandle ();
 	OS.gtk_widget_realize (fontHandle);
-	GdkColor color = new GdkColor ();
+	GdkColor* color = new GdkColor ();
 	OS.gtk_style_get_base (OS.gtk_widget_get_style (fontHandle), OS.GTK_STATE_NORMAL, color);
 	return color;
 }
@@ -2053,9 +2095,9 @@
  *
  * @since 3.3
  */
-public boolean getDragDetect () {
+public bool getDragDetect () {
 	checkWidget ();
-	return (state & DRAG_DETECT) != 0;
+	return (state & DRAG_DETECT) !is 0;
 }
 
 /**
@@ -2073,9 +2115,9 @@
  *
  * @see #isEnabled
  */
-public boolean getEnabled () {
+public bool getEnabled () {
 	checkWidget ();
-	return (state & DISABLED) == 0;
+	return (state & DISABLED) is 0;
 }
 
 /**
@@ -2090,12 +2132,12 @@
  */
 public Font getFont () {
 	checkWidget();
-	if (font != null) return font;
+	if (font !is null) return font;
 	return Font.gtk_new (display, defaultFont ());
 }
 
-int /*long*/ getFontDescription () {
-	int /*long*/ fontHandle = fontHandle ();
+PangoFontDescription* getFontDescription () {
+	auto fontHandle = fontHandle ();
 	OS.gtk_widget_realize (fontHandle);
 	return OS.gtk_style_get_font_desc (OS.gtk_widget_get_style (fontHandle));
 }
@@ -2115,14 +2157,14 @@
 	return Color.gtk_new (display, getForegroundColor ());
 }
 
-GdkColor getForegroundColor () {
+GdkColor* getForegroundColor () {
 	return getFgColor ();
 }
 
-GdkColor getFgColor () {
-	int /*long*/ fontHandle = fontHandle ();
+GdkColor* getFgColor () {
+	auto fontHandle = fontHandle ();
 	OS.gtk_widget_realize (fontHandle);
-	GdkColor color = new GdkColor ();
+	GdkColor* color = new GdkColor ();
 	OS.gtk_style_get_fg (OS.gtk_widget_get_style (fontHandle), OS.GTK_STATE_NORMAL, color);
 	return color;
 }
@@ -2131,10 +2173,10 @@
 	return new Point (0, 0);
 }
 
-GdkColor getTextColor () {
-	int /*long*/ fontHandle = fontHandle ();
+GdkColor* getTextColor () {
+	auto fontHandle = fontHandle ();
 	OS.gtk_widget_realize (fontHandle);
-	GdkColor color = new GdkColor ();
+	GdkColor* color = new GdkColor ();
 	OS.gtk_style_get_text (OS.gtk_widget_get_style (fontHandle), OS.GTK_STATE_NORMAL, color);
 	return color;
 }
@@ -2181,23 +2223,23 @@
  *
  * @since 3.0
  */
-public Monitor getMonitor () {
+public dwt.widgets.Monitor.Monitor getMonitor () {
 	checkWidget();
-	Monitor monitor = null;
-	int /*long*/ screen = OS.gdk_screen_get_default ();
-	if (screen != 0) {
+	dwt.widgets.Monitor.Monitor monitor = null;
+	auto screen = OS.gdk_screen_get_default ();
+	if (screen !is null) {
 		int monitorNumber = OS.gdk_screen_get_monitor_at_window (screen, paintWindow ());
-		GdkRectangle dest = new GdkRectangle ();
+		GdkRectangle* dest = new GdkRectangle ();
 		OS.gdk_screen_get_monitor_geometry (screen, monitorNumber, dest);
-		monitor = new Monitor ();
+		monitor = new dwt.widgets.Monitor.Monitor ();
 		monitor.handle = monitorNumber;
 		monitor.x = dest.x;
 		monitor.y = dest.y;
 		monitor.width = dest.width;
 		monitor.height = dest.height;
 		Rectangle workArea = null;
-		if (monitorNumber == 0) workArea = display.getWorkArea ();
-		if (workArea != null) {
+		if (monitorNumber is 0) workArea = display.getWorkArea ();
+		if (workArea !is null) {
 			monitor.clientX = workArea.x;
 			monitor.clientY = workArea.y;
 			monitor.clientWidth = workArea.width;
@@ -2235,13 +2277,13 @@
 	int count = 0;
 	Shell shell = getShell ();
 	Control control = this;
-	while (control != shell) {
+	while (control !is shell) {
 		count++;
 		control = control.parent;
 	}
 	control = this;
 	Control [] result = new Control [count];
-	while (control != shell) {
+	while (control !is shell) {
 		result [--count] = control;
 		control = control.parent;
 	}
@@ -2283,7 +2325,7 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
-public String getToolTipText () {
+public char[] getToolTipText () {
 	checkWidget();
 	return toolTipText;
 }
@@ -2304,15 +2346,15 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
-public boolean getVisible () {
+public bool getVisible () {
 	checkWidget();
-	return (state & HIDDEN) == 0;
+	return (state & HIDDEN) is 0;
 }
 
-int /*long*/ gtk_button_press_event (int /*long*/ widget, int /*long*/ event) {
-	GdkEventButton gdkEvent = new GdkEventButton ();
-	OS.memmove (gdkEvent, event, GdkEventButton.sizeof);
-	if (gdkEvent.type == OS.GDK_3BUTTON_PRESS) return 0;
+int /*long*/ gtk_button_press_event (GtkWidget* widget, GdkEventButton* event) {
+	GdkEventButton* gdkEvent = new GdkEventButton ();
+	memmove (gdkEvent, event, GdkEventButton.sizeof);
+	if (gdkEvent.type is OS.GDK_3BUTTON_PRESS) return 0;
 	/*
 	* When a shell is created with SWT.ON_TOP and SWT.NO_FOCUS,
 	* do not activate the shell when the user clicks on the
@@ -2320,24 +2362,24 @@
 	* shell that does not take focus.
 	*/
 	Shell shell = _getShell ();
-	if (((shell.style & SWT.ON_TOP) != 0) && (((shell.style & SWT.NO_FOCUS) == 0) || ((style & SWT.NO_FOCUS) == 0))) {
+	if (((shell.style & SWT.ON_TOP) !is 0) && (((shell.style & SWT.NO_FOCUS) is 0) || ((style & SWT.NO_FOCUS) is 0))) {
 		shell.forceActive();
 	}
 	int /*long*/ result = 0;
-	if (gdkEvent.type == OS.GDK_BUTTON_PRESS) {
+	if (gdkEvent.type is OS.GDK_BUTTON_PRESS) {
 		display.clickCount = 1;
-		int /*long*/ nextEvent = OS.gdk_event_peek ();
-		if (nextEvent != 0) {
+		auto nextEvent = OS.gdk_event_peek ();
+		if (nextEvent !is null) {
 			int eventType = OS.GDK_EVENT_TYPE (nextEvent);
-			if (eventType == OS.GDK_2BUTTON_PRESS) display.clickCount = 2;
-			if (eventType == OS.GDK_3BUTTON_PRESS) display.clickCount = 3;
+			if (eventType is OS.GDK_2BUTTON_PRESS) display.clickCount = 2;
+			if (eventType is OS.GDK_3BUTTON_PRESS) display.clickCount = 3;
 			OS.gdk_event_free (nextEvent);
 		}
-		boolean dragging = false;
-		if ((state & DRAG_DETECT) != 0 && hooks (SWT.DragDetect)) {
-			if (gdkEvent.button == 1) {
-				boolean [] consume = new boolean [1];
-				if (dragDetect ((int) gdkEvent.x, (int) gdkEvent.y, true, consume)) {
+		bool dragging = false;
+		if ((state & DRAG_DETECT) !is 0 && hooks (SWT.DragDetect)) {
+			if (gdkEvent.button is 1) {
+				bool [] consume = new bool [1];
+				if (dragDetect (cast(int) gdkEvent.x, cast(int) gdkEvent.y, true, consume)) {
 					dragging = true;
 					if (consume [0]) result = 1;
 				}
@@ -2349,7 +2391,7 @@
 		}
 		if (isDisposed ()) return 1;
 		if (dragging) {
-			sendDragEvent (gdkEvent.button, gdkEvent.state, (int) gdkEvent.x, (int) gdkEvent.y, false);
+			sendDragEvent (gdkEvent.button, gdkEvent.state, cast(int) gdkEvent.x, cast(int) gdkEvent.y, false);
 			if (isDisposed ()) return 1;
 		}
 		/*
@@ -2357,9 +2399,9 @@
 		* that have default operating system menus in order to stop the
 		* operating system from displaying the menu if necessary.
 		*/
-		if ((state & MENU) != 0) {
-			if (gdkEvent.button == 3) {
-				if (showMenu ((int)gdkEvent.x_root, (int)gdkEvent.y_root)) {
+		if ((state & MENU) !is 0) {
+			if (gdkEvent.button is 3) {
+				if (showMenu (cast(int)gdkEvent.x_root, cast(int)gdkEvent.y_root)) {
 					result = 1;
 				}
 			}
@@ -2373,9 +2415,9 @@
 	return result;
 }
 
-int /*long*/ gtk_button_release_event (int /*long*/ widget, int /*long*/ event) {
-	GdkEventButton gdkEvent = new GdkEventButton ();
-	OS.memmove (gdkEvent, event, GdkEventButton.sizeof);
+int /*long*/ gtk_button_release_event (GtkWidget* widget, GdkEventButton* event) {
+	GdkEventButton* gdkEvent = new GdkEventButton ();
+	memmove (gdkEvent, event, GdkEventButton.sizeof);
 	/*
 	* Feature in GTK.  When button 4, 5, 6, or 7 is released, GTK
 	* does not deliver a corresponding GTK event.  Button 6 and 7
@@ -2392,24 +2434,20 @@
 	return sendMouseEvent (SWT.MouseUp, button, display.clickCount, 0, false, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
 }
 
-int /*long*/ gtk_commit (int /*long*/ imcontext, int /*long*/ text) {
-	if (text == 0) return 0;
-	int length = OS.strlen (text);
-	if (length == 0) return 0;
-	byte [] buffer = new byte [length];
-	OS.memmove (buffer, text, length);
-	char [] chars = Converter.mbcsToWcs (null, buffer);
+int /*long*/ gtk_commit (GtkIMContext* imcontext, char* text) {
+	char [] chars = fromUtf8z( text );
+    if (chars.length is 0) return 0;
 	sendIMKeyEvent (SWT.KeyDown, null, chars);
 	return 0;
 }
 
-int /*long*/ gtk_enter_notify_event (int /*long*/ widget, int /*long*/ event) {
-	if (display.currentControl == this) return 0;
-	GdkEventCrossing gdkEvent = new GdkEventCrossing ();
-	OS.memmove (gdkEvent, event, GdkEventCrossing.sizeof);
-	if (gdkEvent.mode != OS.GDK_CROSSING_NORMAL && gdkEvent.mode != OS.GDK_CROSSING_UNGRAB) return 0;
-	if ((gdkEvent.state & (OS.GDK_BUTTON1_MASK | OS.GDK_BUTTON2_MASK | OS.GDK_BUTTON3_MASK)) != 0) return 0;
-	if (display.currentControl != null && !display.currentControl.isDisposed ()) {
+int /*long*/ gtk_enter_notify_event (GtkWidget*  widget, GdkEventCrossing* event) {
+	if (display.currentControl is this) return 0;
+	GdkEventCrossing* gdkEvent = new GdkEventCrossing ();
+	memmove (gdkEvent, event, GdkEventCrossing.sizeof);
+	if (gdkEvent.mode !is OS.GDK_CROSSING_NORMAL && gdkEvent.mode !is OS.GDK_CROSSING_UNGRAB) return 0;
+	if ((gdkEvent.state & (OS.GDK_BUTTON1_MASK | OS.GDK_BUTTON2_MASK | OS.GDK_BUTTON3_MASK)) !is 0) return 0;
+	if (display.currentControl !is null && !display.currentControl.isDisposed ()) {
 		display.removeMouseHoverTimeout (display.currentControl.handle);
 		display.currentControl.sendMouseEvent (SWT.MouseExit,  0, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state);
 	}
@@ -2420,30 +2458,30 @@
 	return 0;
 }
 
-int /*long*/ gtk_event_after (int /*long*/ widget, int /*long*/ gdkEvent) {
-	GdkEvent event = new GdkEvent ();
-	OS.memmove (event, gdkEvent, GdkEvent.sizeof);
-	switch (event.type) {
+int /*long*/ gtk_event_after (GtkWidget*  widget, GdkEvent* gdkEvent) {
+	GdkEvent* event = new GdkEvent ();
+	memmove (event, gdkEvent, GdkEvent.sizeof);
+	switch (cast(int)event.type) {
 		case OS.GDK_BUTTON_PRESS: {
-			if (widget != eventHandle ()) break;
+			if (widget !is eventHandle ()) break;
 			/*
 			* Pop up the context menu in the event_after signal to allow
 			* the widget to process the button press.  This allows widgets
 			* such as GtkTreeView to select items before a menu is shown.
 			*/
-			if ((state & MENU) == 0) {
-				GdkEventButton gdkEventButton = new GdkEventButton ();
-				OS.memmove (gdkEventButton, gdkEvent, GdkEventButton.sizeof);
-				if (gdkEventButton.button == 3) {
-					showMenu ((int) gdkEventButton.x_root, (int) gdkEventButton.y_root);
+			if ((state & MENU) is 0) {
+				GdkEventButton* gdkEventButton = new GdkEventButton ();
+				memmove (gdkEventButton, gdkEvent, GdkEventButton.sizeof);
+				if (gdkEventButton.button is 3) {
+					showMenu (cast(int) gdkEventButton.x_root, cast(int) gdkEventButton.y_root);
 				}
 			}
 			break;
 		}
 		case OS.GDK_FOCUS_CHANGE: {
-			if (widget != focusHandle ()) break;
-			GdkEventFocus gdkEventFocus = new GdkEventFocus ();
-			OS.memmove (gdkEventFocus, gdkEvent, GdkEventFocus.sizeof);
+			if (widget !is focusHandle ()) break;
+			GdkEventFocus* gdkEventFocus = new GdkEventFocus ();
+			memmove (gdkEventFocus, gdkEvent, GdkEventFocus.sizeof);
 
 			/*
 			 * Feature in GTK. The GTK combo box popup under some window managers
@@ -2453,40 +2491,40 @@
 			 * and ignore the focus event when the menu is both shown and hidden.
 			 */
 			Display display = this.display;
-			if (gdkEventFocus.in != 0) {
+			if (gdkEventFocus.in_ !is 0) {
 				if (display.ignoreFocus) {
 					display.ignoreFocus = false;
 					break;
 				}
 			} else {
 				display.ignoreFocus = false;
-				int /*long*/ grabHandle = OS.gtk_grab_get_current ();
-				if (grabHandle != 0) {
-					if (OS.G_OBJECT_TYPE (grabHandle) == OS.GTK_TYPE_MENU ()) {
+				auto grabHandle = OS.gtk_grab_get_current ();
+				if (grabHandle !is null) {
+					if (OS.G_OBJECT_TYPE ( cast(GObject*)grabHandle) is OS.GTK_TYPE_MENU ()) {
 						display.ignoreFocus = true;
 						break;
 					}
 				}
 			}
 
-			sendFocusEvent (gdkEventFocus.in != 0 ? SWT.FocusIn : SWT.FocusOut);
+			sendFocusEvent (gdkEventFocus.in_ !is 0 ? SWT.FocusIn : SWT.FocusOut);
 			break;
 		}
 	}
 	return 0;
 }
 
-int /*long*/ gtk_expose_event (int /*long*/ widget, int /*long*/ eventPtr) {
-	if ((state & OBSCURED) != 0) return 0;
+int /*long*/ gtk_expose_event (GtkWidget*  widget, GdkEventExpose* eventPtr) {
+	if ((state & OBSCURED) !is 0) return 0;
 	if (!hooks (SWT.Paint) && !filters (SWT.Paint)) return 0;
-	GdkEventExpose gdkEvent = new GdkEventExpose ();
-	OS.memmove(gdkEvent, eventPtr, GdkEventExpose.sizeof);
+	GdkEventExpose* gdkEvent = new GdkEventExpose ();
+	memmove(gdkEvent, eventPtr, GdkEventExpose.sizeof);
 	Event event = new Event ();
 	event.count = gdkEvent.count;
-	event.x = gdkEvent.area_x;
-	event.y = gdkEvent.area_y;
-	event.width = gdkEvent.area_width;
-	event.height = gdkEvent.area_height;
+	event.x = gdkEvent.area.x;
+	event.y = gdkEvent.area.y;
+	event.width = gdkEvent.area.width;
+	event.height = gdkEvent.area.height;
 	GCData data = new GCData ();
 	data.damageRgn = gdkEvent.region;
 	GC gc = event.gc = GC.gtk_new (this, data);
@@ -2497,35 +2535,35 @@
 	return 0;
 }
 
-int /*long*/ gtk_focus (int /*long*/ widget, int /*long*/ directionType) {
+int /*long*/ gtk_focus (GtkWidget* widget, int /*long*/ directionType) {
 	/* Stop GTK traversal for every widget */
 	return 1;
 }
 
-int /*long*/ gtk_focus_in_event (int /*long*/ widget, int /*long*/ event) {
+int /*long*/ gtk_focus_in_event (GtkWidget*  widget, int /*long*/ event) {
 	// widget could be disposed at this point
-	if (handle != 0) {
+	if (handle !is null) {
 		Control oldControl = display.imControl;
-		if (oldControl != this)  {
-			if (oldControl != null && !oldControl.isDisposed ()) {
-				int /*long*/ oldIMHandle = oldControl.imHandle ();
-				if (oldIMHandle != 0) OS.gtk_im_context_reset (oldIMHandle);
+		if (oldControl !is this)  {
+			if (oldControl !is null && !oldControl.isDisposed ()) {
+				auto oldIMHandle = oldControl.imHandle ();
+				if (oldIMHandle !is null) OS.gtk_im_context_reset (oldIMHandle);
 			}
 		}
 		if (hooks (SWT.KeyDown) || hooks (SWT.KeyUp)) {
-			int /*long*/ imHandle = imHandle ();
-			if (imHandle != 0) OS.gtk_im_context_focus_in (imHandle);
+			auto imHandle = imHandle ();
+			if (imHandle !is null) OS.gtk_im_context_focus_in (imHandle);
 		}
 	}
 	return 0;
 }
 
-int /*long*/ gtk_focus_out_event (int /*long*/ widget, int /*long*/ event) {
+int /*long*/ gtk_focus_out_event (GtkWidget* widget, int /*long*/ event) {
 	// widget could be disposed at this point
-	if (handle != 0) {
+	if (handle !is null) {
 		if (hooks (SWT.KeyDown) || hooks (SWT.KeyUp)) {
-			int /*long*/ imHandle = imHandle ();
-			if (imHandle != 0) {
+			auto imHandle = imHandle ();
+			if (imHandle !is null) {
 				OS.gtk_im_context_focus_out (imHandle);
 			}
 		}
@@ -2533,10 +2571,10 @@
 	return 0;
 }
 
-int /*long*/ gtk_key_press_event (int /*long*/ widget, int /*long*/ event) {
+int /*long*/ gtk_key_press_event (GtkWidget*  widget, GdkEventKey* event) {
 	if (!hasFocus ()) return 0;
-	GdkEventKey gdkEvent = new GdkEventKey ();
-	OS.memmove (gdkEvent, event, GdkEventKey.sizeof);
+	GdkEventKey* gdkEvent = new GdkEventKey ();
+	memmove (gdkEvent, event, GdkEventKey.sizeof);
 
 	if (translateMnemonic (gdkEvent.keyval, gdkEvent)) return 1;
 	// widget could be disposed at this point
@@ -2552,40 +2590,40 @@
 	return super.gtk_key_press_event (widget, event);
 }
 
-int /*long*/ gtk_key_release_event (int /*long*/ widget, int /*long*/ event) {
+int /*long*/ gtk_key_release_event (GtkWidget*  widget, GdkEventKey* event) {
 	if (!hasFocus ()) return 0;
-	int /*long*/ imHandle = imHandle ();
-	if (imHandle != 0) {
+	auto imHandle = imHandle ();
+	if (imHandle !is null) {
 		if (OS.gtk_im_context_filter_keypress (imHandle, event)) return 1;
 	}
 	return super.gtk_key_release_event (widget, event);
 }
 
-int /*long*/ gtk_leave_notify_event (int /*long*/ widget, int /*long*/ event) {
-	if (display.currentControl != this) return 0;
+int /*long*/ gtk_leave_notify_event (GtkWidget* widget, GdkEventCrossing* event) {
+	if (display.currentControl !is this) return 0;
 	display.removeMouseHoverTimeout (handle);
 	int result = 0;
-	if (sendLeaveNotify () || display.getCursorControl () == null) {
-		GdkEventCrossing gdkEvent = new GdkEventCrossing ();
-		OS.memmove (gdkEvent, event, GdkEventCrossing.sizeof);
-		if (gdkEvent.mode != OS.GDK_CROSSING_NORMAL && gdkEvent.mode != OS.GDK_CROSSING_UNGRAB) return 0;
-		if ((gdkEvent.state & (OS.GDK_BUTTON1_MASK | OS.GDK_BUTTON2_MASK | OS.GDK_BUTTON3_MASK)) != 0) return 0;
+	if (sendLeaveNotify () || display.getCursorControl () is null) {
+		GdkEventCrossing* gdkEvent = new GdkEventCrossing ();
+		memmove (gdkEvent, event, GdkEventCrossing.sizeof);
+		if (gdkEvent.mode !is OS.GDK_CROSSING_NORMAL && gdkEvent.mode !is OS.GDK_CROSSING_UNGRAB) return 0;
+		if ((gdkEvent.state & (OS.GDK_BUTTON1_MASK | OS.GDK_BUTTON2_MASK | OS.GDK_BUTTON3_MASK)) !is 0) return 0;
 		result = sendMouseEvent (SWT.MouseExit, 0, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
 		display.currentControl = null;
 	}
 	return result;
 }
 
-int /*long*/ gtk_mnemonic_activate (int /*long*/ widget, int /*long*/ arg1) {
+int /*long*/ gtk_mnemonic_activate (GtkWidget* widget, int /*long*/ arg1) {
 	int result = 0;
-	int /*long*/ eventPtr = OS.gtk_get_current_event ();
-	if (eventPtr != 0) {
-		GdkEventKey keyEvent = new GdkEventKey ();
-		OS.memmove (keyEvent, eventPtr, GdkEventKey.sizeof);
-		if (keyEvent.type == OS.GDK_KEY_PRESS) {
+	auto eventPtr = OS.gtk_get_current_event ();
+	if (eventPtr !is null) {
+		GdkEventKey* keyEvent = new GdkEventKey ();
+		memmove (keyEvent, eventPtr, GdkEventKey.sizeof);
+		if (keyEvent.type is OS.GDK_KEY_PRESS) {
 			Control focusControl = display.getFocusControl ();
-			int /*long*/ focusHandle = focusControl != null ? focusControl.focusHandle () : 0;
-			if (focusHandle != 0) {
+			auto focusHandle = focusControl !is null ? focusControl.focusHandle () : null;
+			if (focusHandle !is null) {
 				display.mnemonicControl = this;
 				OS.gtk_widget_event (focusHandle, eventPtr);
 				display.mnemonicControl = null;
@@ -2597,31 +2635,32 @@
 	return result;
 }
 
-int /*long*/ gtk_motion_notify_event (int /*long*/ widget, int /*long*/ event) {
-	GdkEventMotion gdkEvent = new GdkEventMotion ();
-	OS.memmove (gdkEvent, event, GdkEventMotion.sizeof);
-	if (this == display.currentControl && (hooks (SWT.MouseHover) || filters (SWT.MouseHover))) {
+int /*long*/ gtk_motion_notify_event (GtkWidget* widget, GdkEventMotion* event) {
+	GdkEventMotion* gdkEvent = new GdkEventMotion ();
+	memmove (gdkEvent, event, GdkEventMotion.sizeof);
+	if (this is display.currentControl && (hooks (SWT.MouseHover) || filters (SWT.MouseHover))) {
 		display.addMouseHoverTimeout (handle);
 	}
 	double x = gdkEvent.x_root, y = gdkEvent.y_root;
 	int state = gdkEvent.state;
-	if (gdkEvent.is_hint != 0) {
-		int [] pointer_x = new int [1], pointer_y = new int [1], mask = new int [1];
-		int /*long*/ window = eventWindow ();
-		OS.gdk_window_get_pointer (window, pointer_x, pointer_y, mask);
-		x = pointer_x [0];
-		y = pointer_y [0];
-		state = mask [0];
+	if (gdkEvent.is_hint !is 0) {
+		int pointer_x, pointer_y;
+        GdkModifierType mask;
+		auto window = eventWindow ();
+		OS.gdk_window_get_pointer (window, &pointer_x, &pointer_y, &mask);
+		x = pointer_x;
+		y = pointer_y;
+		state = mask;
 	}
-	int result = sendMouseEvent (SWT.MouseMove, 0, gdkEvent.time, x, y, gdkEvent.is_hint != 0, state) ? 0 : 1;
+	int result = sendMouseEvent (SWT.MouseMove, 0, gdkEvent.time, x, y, gdkEvent.is_hint !is 0, state) ? 0 : 1;
 	return result;
 }
 
-int /*long*/ gtk_popup_menu (int /*long*/ widget) {
+int /*long*/ gtk_popup_menu (GtkWidget* widget) {
 	if (!hasFocus()) return 0;
-	int [] x = new int [1], y = new int [1];
-	OS.gdk_window_get_pointer (0, x, y, null);
-	return showMenu (x [0], y [0]) ? 1 : 0;
+	int x, y ;
+	OS.gdk_window_get_pointer (null, &x, &y, null);
+	return showMenu (x, y) ? 1 : 0;
 }
 
 int /*long*/ gtk_preedit_changed (int /*long*/ imcontext) {
@@ -2629,23 +2668,23 @@
 	return 0;
 }
 
-int /*long*/ gtk_realize (int /*long*/ widget) {
-	int /*long*/ imHandle = imHandle ();
-	if (imHandle != 0) {
-		int /*long*/ window = OS.GTK_WIDGET_WINDOW (paintHandle ());
+int /*long*/ gtk_realize (GtkWidget* widget) {
+	auto imHandle = imHandle ();
+	if (imHandle !is null) {
+		auto window = OS.GTK_WIDGET_WINDOW (paintHandle ());
 		OS.gtk_im_context_set_client_window (imHandle, window);
 	}
-	if (backgroundImage != null) {
-		int /*long*/ window = OS.GTK_WIDGET_WINDOW (paintHandle ());
-		if (window != 0) OS.gdk_window_set_back_pixmap (window, backgroundImage.pixmap, false);
+	if (backgroundImage !is null) {
+		auto window = OS.GTK_WIDGET_WINDOW (paintHandle ());
+		if (window !is null) OS.gdk_window_set_back_pixmap (window, cast(GdkPixmap*)backgroundImage.pixmap, false);
 	}
 	return 0;
 }
 
-int /*long*/ gtk_scroll_event (int /*long*/ widget, int /*long*/ eventPtr) {
-	GdkEventScroll gdkEvent = new GdkEventScroll ();
-	OS.memmove (gdkEvent, eventPtr, GdkEventScroll.sizeof);
-	switch (gdkEvent.direction) {
+int /*long*/ gtk_scroll_event (GtkWidget* widget, GdkEventScroll* eventPtr) {
+	GdkEventScroll* gdkEvent = new GdkEventScroll ();
+	memmove (gdkEvent, eventPtr, GdkEventScroll.sizeof);
+	switch (cast(int)gdkEvent.direction) {
 		case OS.GDK_SCROLL_UP:
 			return sendMouseEvent (SWT.MouseWheel, 0, 3, SWT.SCROLL_LINE, true, gdkEvent.time, gdkEvent.x_root, gdkEvent.y_root, false, gdkEvent.state) ? 0 : 1;
 		case OS.GDK_SCROLL_DOWN:
@@ -2658,39 +2697,39 @@
 	return 0;
 }
 
-int /*long*/ gtk_show_help (int /*long*/ widget, int /*long*/ helpType) {
+int /*long*/ gtk_show_help (GtkWidget* widget, int /*long*/ helpType) {
 	if (!hasFocus ()) return 0;
 	return sendHelpEvent (helpType) ? 1 : 0;
 }
 
-int /*long*/ gtk_style_set (int /*long*/ widget, int /*long*/ previousStyle) {
-	if (backgroundImage != null) {
+int /*long*/ gtk_style_set (GtkWidget* widget, int /*long*/ previousStyle) {
+	if (backgroundImage !is null) {
 		setBackgroundPixmap (backgroundImage.pixmap);
 	}
 	return 0;
 }
 
-int /*long*/ gtk_unrealize (int /*long*/ widget) {
-	int /*long*/ imHandle = imHandle ();
-	if (imHandle != 0) OS.gtk_im_context_set_client_window (imHandle, 0);
+int /*long*/ gtk_unrealize (GtkWidget* widget) {
+	auto imHandle = imHandle ();
+	if (imHandle !is null) OS.gtk_im_context_set_client_window (imHandle, null);
 	return 0;
 }
 
-int /*long*/ gtk_visibility_notify_event (int /*long*/ widget, int /*long*/ event) {
-	GdkEventVisibility gdkEvent = new GdkEventVisibility ();
-	OS.memmove (gdkEvent, event, GdkEventVisibility.sizeof);
-	int /*long*/ paintWindow = paintWindow();
-	int /*long*/ window = gdkEvent.window;
-	if (window == paintWindow) {
-		if (gdkEvent.state == OS.GDK_VISIBILITY_FULLY_OBSCURED) {
+int /*long*/ gtk_visibility_notify_event (GtkWidget* widget, GdkEventVisibility* event) {
+	GdkEventVisibility* gdkEvent = new GdkEventVisibility ();
+	memmove (gdkEvent, event, GdkEventVisibility.sizeof);
+	auto paintWindow = paintWindow();
+	auto window = gdkEvent.window;
+	if (window is paintWindow) {
+		if (gdkEvent.state is OS.GDK_VISIBILITY_FULLY_OBSCURED) {
 			state |= OBSCURED;
 		} else {
-			if ((state & OBSCURED) != 0) {
-				int [] width = new int [1], height = new int [1];
-				OS.gdk_drawable_get_size (window, width, height);
-				GdkRectangle rect = new GdkRectangle ();
-				rect.width = width [0];
-				rect.height = height [0];
+			if ((state & OBSCURED) !is 0) {
+				int width, height;
+				OS.gdk_drawable_get_size (cast(GdkDrawable*)window, &width, &height);
+				GdkRectangle* rect = new GdkRectangle ();
+				rect.width = width;
+				rect.height = height;
 				OS.gdk_window_invalidate_rect (window, rect, false);
 			}
 			state &= ~OBSCURED;
@@ -2699,7 +2738,7 @@
 	return 0;
 }
 
-void gtk_widget_size_request (int /*long*/ widget, GtkRequisition requisition) {
+void gtk_widget_size_request (GtkWidget* widget, GtkRequisition* requisition) {
 	OS.gtk_widget_size_request (widget, requisition);
 }
 
@@ -2716,30 +2755,30 @@
  * @param data the platform specific GC data
  * @return the platform specific GC handle
  */
-public int /*long*/ internal_new_GC (GCData data) {
+public GdkGC* internal_new_GC (GCData data) {
 	checkWidget ();
-	int /*long*/ window = paintWindow ();
-	if (window == 0) SWT.error (SWT.ERROR_NO_HANDLES);
-	int /*long*/ gdkGC = OS.gdk_gc_new (window);
-	if (gdkGC == 0) error (SWT.ERROR_NO_HANDLES);
-	if (data != null) {
+	auto window = paintWindow ();
+	if (window is null) SWT.error (SWT.ERROR_NO_HANDLES);
+	auto gdkGC = OS.gdk_gc_new (cast(GdkDrawable*)window);
+	if (gdkGC is null) error (SWT.ERROR_NO_HANDLES);
+	if (data !is null) {
 		int mask = SWT.LEFT_TO_RIGHT | SWT.RIGHT_TO_LEFT;
-		if ((data.style & mask) == 0) {
+		if ((data.style & mask) is 0) {
 			data.style |= style & (mask | SWT.MIRRORED);
 		}
-		data.drawable = window;
+		data.drawable = cast(GdkDrawable*)window;
 		data.device = display;
 		data.foreground = getForegroundColor ();
 		Control control = findBackgroundControl ();
-		if (control == null) control = this;
+		if (control is null) control = this;
 		data.background = control.getBackgroundColor ();
-		data.font = font != null ? font.handle : defaultFont ();
+		data.font = font !is null ? font.handle : defaultFont ();
 	}
 	return gdkGC;
 }
 
-int /*long*/ imHandle () {
-	return 0;
+GtkIMContext* imHandle () {
+	return null;
 }
 
 /**
@@ -2755,7 +2794,7 @@
  * @param hDC the platform specific GC handle
  * @param data the platform specific GC data
  */
-public void internal_dispose_GC (int /*long*/ gdkGC, GCData data) {
+public void internal_dispose_GC (GdkGC* gdkGC, GCData data) {
 	checkWidget ();
 	OS.g_object_unref (gdkGC);
 }
@@ -2771,46 +2810,46 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
-public boolean isReparentable () {
+public bool isReparentable () {
 	checkWidget();
 	return true;
 }
-boolean isShowing () {
+bool isShowing () {
 	/*
 	* This is not complete.  Need to check if the
 	* widget is obscurred by a parent or sibling.
 	*/
 	if (!isVisible ()) return false;
 	Control control = this;
-	while (control != null) {
+	while (control !is null) {
 		Point size = control.getSize ();
-		if (size.x == 0 || size.y == 0) {
+		if (size.x is 0 || size.y is 0) {
 			return false;
 		}
 		control = control.parent;
 	}
 	return true;
 }
-boolean isTabGroup () {
+bool isTabGroup () {
 	Control [] tabList = parent._getTabList ();
-	if (tabList != null) {
+	if (tabList !is null) {
 		for (int i=0; i<tabList.length; i++) {
-			if (tabList [i] == this) return true;
+			if (tabList [i] is this) return true;
 		}
 	}
 	int code = traversalCode (0, null);
-	if ((code & (SWT.TRAVERSE_ARROW_PREVIOUS | SWT.TRAVERSE_ARROW_NEXT)) != 0) return false;
-	return (code & (SWT.TRAVERSE_TAB_PREVIOUS | SWT.TRAVERSE_TAB_NEXT)) != 0;
+	if ((code & (SWT.TRAVERSE_ARROW_PREVIOUS | SWT.TRAVERSE_ARROW_NEXT)) !is 0) return false;
+	return (code & (SWT.TRAVERSE_TAB_PREVIOUS | SWT.TRAVERSE_TAB_NEXT)) !is 0;
 }
-boolean isTabItem () {
+bool isTabItem () {
 	Control [] tabList = parent._getTabList ();
-	if (tabList != null) {
+	if (tabList !is null) {
 		for (int i=0; i<tabList.length; i++) {
-			if (tabList [i] == this) return false;
+			if (tabList [i] is this) return false;
 		}
 	}
 	int code = traversalCode (0, null);
-	return (code & (SWT.TRAVERSE_ARROW_PREVIOUS | SWT.TRAVERSE_ARROW_NEXT)) != 0;
+	return (code & (SWT.TRAVERSE_ARROW_PREVIOUS | SWT.TRAVERSE_ARROW_NEXT)) !is 0;
 }
 
 /**
@@ -2829,16 +2868,16 @@
  *
  * @see #getEnabled
  */
-public boolean isEnabled () {
+public bool isEnabled () {
 	checkWidget ();
 	return getEnabled () && parent.isEnabled ();
 }
 
-boolean isFocusAncestor (Control control) {
-	while (control != null && control != this && !(control instanceof Shell)) {
+bool isFocusAncestor (Control control) {
+	while (control !is null && control !is this && !( null !is cast(Shell)control )) {
 		control = control.parent;
 	}
-	return control == this;
+	return control is this;
 }
 
 /**
@@ -2852,11 +2891,11 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
-public boolean isFocusControl () {
+public bool isFocusControl () {
 	checkWidget();
 	Control focusControl = display.focusControl;
-	if (focusControl != null && !focusControl.isDisposed ()) {
-		return this == focusControl;
+	if (focusControl !is null && !focusControl.isDisposed ()) {
+		return this is focusControl;
 	}
 	return hasFocus ();
 }
@@ -2875,7 +2914,7 @@
  *
  * @see #getVisible
  */
-public boolean isVisible () {
+public bool isVisible () {
 	checkWidget();
 	return getVisible () && parent.isVisible ();
 }
@@ -2884,19 +2923,19 @@
 	return parent.menuShell ();
 }
 
-boolean mnemonicHit (char key) {
+bool mnemonicHit (char key) {
 	return false;
 }
 
-boolean mnemonicMatch (char key) {
+bool mnemonicMatch (char key) {
 	return false;
 }
 
 void register () {
 	super.register ();
-	if (fixedHandle != 0) display.addWidget (fixedHandle, this);
-	int /*long*/ imHandle = imHandle ();
-	if (imHandle != 0) display.addWidget (imHandle, this);
+	if (fixedHandle !is null) display.addWidget (fixedHandle, this);
+	auto imHandle = imHandle ();
+	if (imHandle !is null) display.addWidget (cast(GtkWidget*)imHandle, this);
 }
 
 /**
@@ -2923,7 +2962,7 @@
 	redraw (false);
 }
 
-void redraw (boolean all) {
+void redraw (bool all) {
 //	checkWidget();
 	if (!OS.GTK_WIDGET_VISIBLE (topHandle ())) return;
 	redrawWidget (0, 0, 0, 0, true, all, false);
@@ -2959,7 +2998,7 @@
  * @see SWT#NO_MERGE_PAINTS
  * @see SWT#DOUBLE_BUFFERED
  */
-public void redraw (int x, int y, int width, int height, boolean all) {
+public void redraw (int x, int y, int width, int height, bool all) {
 	checkWidget();
 	if (!OS.GTK_WIDGET_VISIBLE (topHandle ())) return;
 	redrawWidget (x, y, width, height, false, all, false);
@@ -2968,15 +3007,15 @@
 void redrawChildren () {
 }
 
-void redrawWidget (int x, int y, int width, int height, boolean redrawAll, boolean all, boolean trim) {
-	if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_REALIZED) == 0) return;
-	int /*long*/ window = paintWindow ();
-	GdkRectangle rect = new GdkRectangle ();
+void redrawWidget (int x, int y, int width, int height, bool redrawAll, bool all, bool trim) {
+	if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_REALIZED) is 0) return;
+	auto window = paintWindow ();
+	GdkRectangle* rect = new GdkRectangle ();
 	if (redrawAll) {
-		int [] w = new int [1], h = new int [1];
-		OS.gdk_drawable_get_size (window, w, h);
-		rect.width = w [0];
-		rect.height = h [0];
+		int w, h;
+		OS.gdk_drawable_get_size (cast(GdkDrawable*)window, &w, &h);
+		rect.width = w;
+		rect.height = h;
 	} else {
 		rect.x = x;
 		rect.y = y;
@@ -2986,13 +3025,13 @@
 	OS.gdk_window_invalidate_rect (window, rect, all);
 }
 
-void release (boolean destroy) {
+void release (bool destroy) {
 	Control next = null, previous = null;
-	if (destroy && parent != null) {
+	if (destroy && parent !is null) {
 		Control[] children = parent._getChildren ();
 		int index = 0;
 		while (index < children.length) {
-			if (children [index] == this) break;
+			if (children [index] is this) break;
 			index++;
 		}
 		if (0 < index && (index + 1) < children.length) {
@@ -3002,13 +3041,13 @@
 	}
 	super.release (destroy);
 	if (destroy) {
-		if (previous != null) previous.addRelation (next);
+		if (previous !is null) previous.addRelation (next);
 	}
 }
 
 void releaseHandle () {
 	super.releaseHandle ();
-	fixedHandle = 0;
+	fixedHandle = null;
 	parent = null;
 }
 
@@ -3018,20 +3057,20 @@
 
 void releaseWidget () {
 	super.releaseWidget ();
-	if (display.currentControl == this) display.currentControl = null;
+	if (display.currentControl is this) display.currentControl = null;
 	display.removeMouseHoverTimeout (handle);
-	int /*long*/ imHandle = imHandle ();
-	if (imHandle != 0) {
+	auto imHandle = imHandle ();
+	if (imHandle !is null) {
 		OS.gtk_im_context_reset (imHandle);
-		OS.gtk_im_context_set_client_window (imHandle, 0);
+		OS.gtk_im_context_set_client_window (imHandle, null);
 	}
-	if (enableWindow != 0) {
-		OS.gdk_window_set_user_data (enableWindow, 0);
+	if (enableWindow !is null) {
+		OS.gdk_window_set_user_data (enableWindow, null);
 		OS.gdk_window_destroy (enableWindow);
-		enableWindow = 0;
+		enableWindow = null;
 	}
-	redrawWindow = 0;
-	if (menu != null && !menu.isDisposed ()) {
+	redrawWindow = null;
+	if (menu !is null && !menu.isDisposed ()) {
 		menu.dispose ();
 	}
 	menu = null;
@@ -3041,7 +3080,7 @@
 	accessible = null;
 }
 
-boolean sendDragEvent (int button, int stateMask, int x, int y, boolean isStateMask) {
+bool sendDragEvent (int button, int stateMask, int x, int y, bool isStateMask) {
 	Event event = new Event ();
 	event.button = button;
 	event.x = x;
@@ -3076,7 +3115,7 @@
 				shell.setActiveControl (this);
 				break;
 			case SWT.FocusOut:
-				if (shell != display.activeShell) {
+				if (shell !is display.activeShell) {
 					shell.setActiveControl (null);
 				}
 				break;
@@ -3084,9 +3123,9 @@
 	}
 }
 
-boolean sendHelpEvent (int /*long*/ helpType) {
+bool sendHelpEvent (int /*long*/ helpType) {
 	Control control = this;
-	while (control != null) {
+	while (control !is null) {
 		if (control.hooks (SWT.Help)) {
 			control.postEvent (SWT.Help);
 			return true;
@@ -3096,15 +3135,15 @@
 	return false;
 }
 
-boolean sendLeaveNotify() {
+bool sendLeaveNotify() {
 	return false;
 }
 
-boolean sendMouseEvent (int type, int button, int time, double x, double y, boolean is_hint, int state) {
+bool sendMouseEvent (int type, int button, int time, double x, double y, bool is_hint, int state) {
 	return sendMouseEvent (type, button, 0, 0, false, time, x, y, is_hint, state);
 }
 
-boolean sendMouseEvent (int type, int button, int count, int detail, boolean send, int time, double x, double y, boolean is_hint, int state) {
+bool sendMouseEvent (int type, int button, int count, int detail, bool send, int time, double x, double y, bool is_hint, int state) {
 	if (!hooks (type) && !filters (type)) return true;
 	Event event = new Event ();
 	event.time = time;
@@ -3112,14 +3151,14 @@
 	event.detail = detail;
 	event.count = count;
 	if (is_hint) {
-		event.x = (int)x;
-		event.y = (int)y;
+		event.x = cast(int)x;
+		event.y = cast(int)y;
 	} else {
-		int /*long*/ window = eventWindow ();
-		int [] origin_x = new int [1], origin_y = new int [1];
-		OS.gdk_window_get_origin (window, origin_x, origin_y);
-		event.x = (int)x - origin_x [0];
-		event.y = (int)y - origin_y [0];
+		auto window = eventWindow ();
+		int origin_x, origin_y;
+		OS.gdk_window_get_origin (window, &origin_x, &origin_y);
+		event.x = cast(int)x - origin_x;
+		event.y = cast(int)y - origin_y;
 	}
 	setInputState (event, state);
 	if (send) {
@@ -3132,7 +3171,7 @@
 }
 
 void setBackground () {
-	if ((state & PARENT_BACKGROUND) != 0 && (state & BACKGROUND) == 0 && backgroundImage == null) {
+	if ((state & PARENT_BACKGROUND) !is 0 && (state & BACKGROUND) is 0 && backgroundImage is null) {
 		setParentBackground ();
 	} else {
 		setWidgetBackground ();
@@ -3160,22 +3199,22 @@
  */
 public void setBackground (Color color) {
 	checkWidget();
-	if (((state & BACKGROUND) == 0) && color == null) return;
-	GdkColor gdkColor = null;
-	if (color != null) {
+	if (((state & BACKGROUND) is 0) && color is null) return;
+	GdkColor* gdkColor = null;
+	if (color !is null) {
 		if (color.isDisposed ()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
 		gdkColor = color.handle;
 	}
-	boolean set = false;
-	if (gdkColor == null) {
-		int /*long*/ style = OS.gtk_widget_get_modifier_style (handle);
-		set = (OS.gtk_rc_style_get_color_flags (style, OS.GTK_STATE_NORMAL) & OS.GTK_RC_BG) != 0;
+	bool set = false;
+	if (gdkColor is null) {
+		auto style = OS.gtk_widget_get_modifier_style (handle);
+		set = (OS.gtk_rc_style_get_color_flags (style, OS.GTK_STATE_NORMAL) & OS.GTK_RC_BG) !is 0;
 	} else {
-		GdkColor oldColor = getBackgroundColor ();
-		set = oldColor.pixel != gdkColor.pixel;
+		GdkColor* oldColor = getBackgroundColor ();
+		set = oldColor.pixel !is gdkColor.pixel;
 	}
 	if (set) {
-		if (color == null) {
+		if (color is null) {
 			state &= ~BACKGROUND;
 		} else {
 			state |= BACKGROUND;
@@ -3185,24 +3224,24 @@
 	}
 }
 
-void setBackgroundColor (int /*long*/ handle, GdkColor color) {
+void setBackgroundColor (GtkWidget* handle, GdkColor* color) {
 	int index = OS.GTK_STATE_NORMAL;
-	int /*long*/ style = OS.gtk_widget_get_modifier_style (handle);
-	int /*long*/ ptr = OS.gtk_rc_style_get_bg_pixmap_name (style, index);
-	if (ptr != 0) OS.g_free (ptr);
-	String name = color == null ? "<parent>" : "<none>";
-	byte[] buffer = Converter.wcsToMbcs (null, name, true);
-	ptr = OS.g_malloc (buffer.length);
-	OS.memmove (ptr, buffer, buffer.length);
+	auto style = OS.gtk_widget_get_modifier_style (handle);
+	auto ptr = OS.gtk_rc_style_get_bg_pixmap_name (style, index);
+	if (ptr !is null) OS.g_free (ptr);
+	char[] name = color is null ? "<parent>" : "<none>" ;
+    char* pname = toStringz( name );
+	ptr = cast(char*)OS.g_malloc (name.length+1);
+	memmove (ptr, pname, name.length+1);
 	OS.gtk_rc_style_set_bg_pixmap_name (style, index, ptr);
 	OS.gtk_rc_style_set_bg (style, index, color);
 	int flags = OS.gtk_rc_style_get_color_flags (style, index);
-	flags = (color == null) ? flags & ~OS.GTK_RC_BG : flags | OS.GTK_RC_BG;
+	flags = (color is null) ? flags & ~OS.GTK_RC_BG : flags | OS.GTK_RC_BG;
 	OS.gtk_rc_style_set_color_flags (style, index, flags);
 	OS.gtk_widget_modify_style (handle, style);
 }
 
-void setBackgroundColor (GdkColor color) {
+void setBackgroundColor (GdkColor* color) {
 	setBackgroundColor (handle, color);
 }
 
@@ -3230,10 +3269,10 @@
  */
 public void setBackgroundImage (Image image) {
 	checkWidget ();
-	if (image != null && image.isDisposed ()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
-	if (image == backgroundImage) return;
+	if (image !is null && image.isDisposed ()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
+	if (image is backgroundImage) return;
 	this.backgroundImage = image;
-	if (backgroundImage != null) {
+	if (backgroundImage !is null) {
 		setBackgroundPixmap (backgroundImage.pixmap);
 		redrawWidget (0, 0, 0, 0, true, false, false);
 	} else {
@@ -3242,9 +3281,9 @@
 	redrawChildren ();
 }
 
-void setBackgroundPixmap (int /*long*/ pixmap) {
-	int /*long*/ window = OS.GTK_WIDGET_WINDOW (paintHandle ());
-	if (window != 0) OS.gdk_window_set_back_pixmap (window, backgroundImage.pixmap, false);
+void setBackgroundPixmap (GdkDrawable* pixmap) {
+	auto window = OS.GTK_WIDGET_WINDOW (paintHandle ());
+	if (window !is null) OS.gdk_window_set_back_pixmap (window, cast(GdkPixmap*)backgroundImage.pixmap, false);
 }
 
 /**
@@ -3259,7 +3298,7 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
-public void setCapture (boolean capture) {
+public void setCapture (bool capture) {
 	checkWidget();
 	/* FIXME !!!!! */
 	/*
@@ -3291,19 +3330,19 @@
  */
 public void setCursor (Cursor cursor) {
 	checkWidget();
-	if (cursor != null && cursor.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
+	if (cursor !is null && cursor.isDisposed ()) error (SWT.ERROR_INVALID_ARGUMENT);
 	this.cursor = cursor;
-	setCursor (cursor != null ? cursor.handle : 0);
+	setCursor (cursor !is null ? cursor.handle : null);
 }
 
-void setCursor (int /*long*/ cursor) {
-	int /*long*/ window = eventWindow ();
-	if (window != 0) {
+void setCursor (GdkCursor* cursor) {
+	auto window = eventWindow ();
+	if (window !is null) {
 		OS.gdk_window_set_cursor (window, cursor);
 		if (!OS.GDK_WINDOWING_X11 ()) {
 			OS.gdk_flush ();
 		} else {
-			int /*long*/ xDisplay = OS.GDK_DISPLAY ();
+			auto xDisplay = OS.GDK_DISPLAY ();
 			OS.XFlush (xDisplay);
 		}
 	}
@@ -3323,7 +3362,7 @@
  *
  * @since 3.3
  */
-public void setDragDetect (boolean dragDetect) {
+public void setDragDetect (bool dragDetect) {
 	checkWidget ();
 	if (dragDetect) {
 		state |= DRAG_DETECT;
@@ -3345,15 +3384,15 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
-public void setEnabled (boolean enabled) {
+public void setEnabled (bool enabled) {
 	checkWidget();
-	if (((state & DISABLED) == 0) == enabled) return;
+	if (((state & DISABLED) is 0) is enabled) return;
 	Control control = null;
-	boolean fixFocus = false;
+	bool fixFocus_ = false;
 	if (!enabled) {
-		if (display.focusEvent != SWT.FocusOut) {
+		if (display.focusEvent !is SWT.FocusOut) {
 			control = display.getFocusControl ();
-			fixFocus = isFocusAncestor (control);
+			fixFocus_ = isFocusAncestor (control);
 		}
 	}
 	if (enabled) {
@@ -3364,17 +3403,17 @@
 	enableWidget (enabled);
 	if (isDisposed ()) return;
 	if (enabled) {
-		if (enableWindow != 0) {
-			OS.gdk_window_set_user_data (enableWindow, 0);
+		if (enableWindow !is null) {
+			OS.gdk_window_set_user_data (enableWindow, null);
 			OS.gdk_window_destroy (enableWindow);
-			enableWindow = 0;
+			enableWindow = null;
 		}
 	} else {
 		OS.gtk_widget_realize (handle);
-		int /*long*/ parentHandle = parent.parentingHandle ();
-		int /*long*/ window = OS.GTK_WIDGET_WINDOW (parentHandle);
+		auto parentHandle = parent.parentingHandle ();
+		auto window = OS.GTK_WIDGET_WINDOW (parentHandle);
 		Rectangle rect = getBounds ();
-		GdkWindowAttr attributes = new GdkWindowAttr ();
+		GdkWindowAttr* attributes = new GdkWindowAttr ();
 		attributes.x = rect.x;
 		attributes.y = rect.y;
 		attributes.width = rect.width;
@@ -3383,26 +3422,26 @@
 		attributes.wclass = OS.GDK_INPUT_ONLY;
 		attributes.window_type = OS.GDK_WINDOW_CHILD;
 		enableWindow = OS.gdk_window_new (window, attributes, OS.GDK_WA_X | OS.GDK_WA_Y);
-		if (enableWindow != 0) {
-			int /*long*/ topHandle = topHandle ();
+		if (enableWindow !is null) {
+			auto topHandle = topHandle ();
 			OS.gdk_window_set_user_data (enableWindow, parentHandle);
 			if (!OS.GDK_WINDOWING_X11 ()) {
 				OS.gdk_window_raise (enableWindow);
 			} else {
-				int /*long*/ topWindow = OS.GTK_WIDGET_WINDOW (topHandle);
-				int /*long*/ xDisplay = OS.gdk_x11_drawable_get_xdisplay (topWindow);
-				int /*long*/ xWindow = OS.gdk_x11_drawable_get_xid (enableWindow);
+				auto topWindow = OS.GTK_WIDGET_WINDOW (topHandle);
+				auto xDisplay = OS.gdk_x11_drawable_get_xdisplay (cast(GdkDrawable*)topWindow);
+				auto xWindow = OS.gdk_x11_drawable_get_xid (cast(GdkDrawable*)enableWindow);
 				int xScreen = OS.XDefaultScreen (xDisplay);
 				int flags = OS.CWStackMode | OS.CWSibling;
-				XWindowChanges changes = new XWindowChanges ();
-				changes.sibling = OS.gdk_x11_drawable_get_xid (topWindow);
+				XWindowChanges* changes = new XWindowChanges ();
+				changes.sibling = OS.gdk_x11_drawable_get_xid (cast(GdkDrawable*)topWindow);
 				changes.stack_mode = OS.Above;
 				OS.XReconfigureWMWindow (xDisplay, xWindow, xScreen, flags, changes);
 			}
 			if (OS.GTK_WIDGET_VISIBLE (topHandle)) OS.gdk_window_show_unraised (enableWindow);
 		}
 	}
-	if (fixFocus) fixFocus (control);
+	if (fixFocus_) fixFocus (control);
 }
 
 /**
@@ -3419,9 +3458,9 @@
  *
  * @see #forceFocus
  */
-public boolean setFocus () {
+public bool setFocus () {
 	checkWidget();
-	if ((style & SWT.NO_FOCUS) != 0) return false;
+	if ((style & SWT.NO_FOCUS) !is 0) return false;
 	return forceFocus ();
 }
 
@@ -3442,16 +3481,16 @@
  */
 public void setFont (Font font) {
 	checkWidget();
-	if (((state & FONT) == 0) && font == null) return;
+	if (((state & FONT) is 0) && font is null) return;
 	this.font = font;
-	int /*long*/ fontDesc;
-	if (font == null) {
+	PangoFontDescription* fontDesc;
+	if (font is null) {
 		fontDesc = defaultFont ();
 	} else {
 		if (font.isDisposed ()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
 		fontDesc = font.handle;
 	}
-	if (font == null) {
+	if (font is null) {
 		state &= ~FONT;
 	} else {
 		state |= FONT;
@@ -3459,7 +3498,7 @@
 	setFontDescription (fontDesc);
 }
 
-void setFontDescription (int /*long*/ font) {
+void setFontDescription (PangoFontDescription* font) {
 	OS.gtk_widget_modify_font (handle, font);
 }
 
@@ -3482,22 +3521,22 @@
  */
 public void setForeground (Color color) {
 	checkWidget();
-	if (((state & FOREGROUND) == 0) && color == null) return;
-	GdkColor gdkColor = null;
-	if (color != null) {
+	if (((state & FOREGROUND) is 0) && color is null) return;
+	GdkColor* gdkColor = null;
+	if (color !is null) {
 		if (color.isDisposed ()) SWT.error(SWT.ERROR_INVALID_ARGUMENT);
 		gdkColor = color.handle;
 	}
-	boolean set = false;
-	if (gdkColor == null) {
-		int /*long*/ style = OS.gtk_widget_get_modifier_style (handle);
-		set = (OS.gtk_rc_style_get_color_flags (style, OS.GTK_STATE_NORMAL) & OS.GTK_RC_FG) != 0;
+	bool set = false;
+	if (gdkColor is null) {
+		auto style = OS.gtk_widget_get_modifier_style (handle);
+		set = (OS.gtk_rc_style_get_color_flags (style, OS.GTK_STATE_NORMAL) & OS.GTK_RC_FG) !is 0;
 	} else {
-		GdkColor oldColor = getForegroundColor ();
-		set = oldColor.pixel != gdkColor.pixel;
+		GdkColor* oldColor = getForegroundColor ();
+		set = oldColor.pixel !is gdkColor.pixel;
 	}
 	if (set) {
-		if (color == null) {
+		if (color is null) {
 			state &= ~FOREGROUND;
 		} else {
 			state |= FOREGROUND;
@@ -3506,19 +3545,20 @@
 	}
 }
 
-void setForegroundColor (GdkColor color) {
+alias Widget.setForegroundColor setForegroundColor;
+void setForegroundColor (GdkColor* color) {
 	setForegroundColor (handle, color);
 }
 
 void setInitialBounds () {
-	if ((state & ZERO_WIDTH) != 0 && (state & ZERO_HEIGHT) != 0) {
+	if ((state & ZERO_WIDTH) !is 0 && (state & ZERO_HEIGHT) !is 0) {
 		/*
 		* Feature in GTK.  On creation, each widget's allocation is
 		* initialized to a position of (-1, -1) until the widget is
 		* first sized.  The fix is to set the value to (0, 0) as
 		* expected by SWT.
 		*/
-		int /*long*/ topHandle = topHandle ();
+		auto topHandle = topHandle ();
 		OS.GTK_WIDGET_SET_X (topHandle, 0);
 		OS.GTK_WIDGET_SET_Y (topHandle, 0);
 	} else {
@@ -3554,11 +3594,11 @@
  */
 public void setMenu (Menu menu) {
 	checkWidget();
-	if (menu != null) {
-		if ((menu.style & SWT.POP_UP) == 0) {
+	if (menu !is null) {
+		if ((menu.style & SWT.POP_UP) is 0) {
 			error (SWT.ERROR_MENU_NOT_POP_UP);
 		}
-		if (menu.parent != menuShell ()) {
+		if (menu.parent !is menuShell ()) {
 			error (SWT.ERROR_INVALID_PARENT);
 		}
 	}
@@ -3566,9 +3606,9 @@
 }
 
 void setOrientation () {
-	if ((style & SWT.RIGHT_TO_LEFT) != 0) {
-		if (handle != 0) OS.gtk_widget_set_direction (handle, OS.GTK_TEXT_DIR_RTL);
-		if (fixedHandle != 0) OS.gtk_widget_set_direction (fixedHandle, OS.GTK_TEXT_DIR_RTL);
+	if ((style & SWT.RIGHT_TO_LEFT) !is 0) {
+		if (handle !is null) OS.gtk_widget_set_direction (handle, cast(GtkTextDirection)OS.GTK_TEXT_DIR_RTL);
+		if (fixedHandle !is null) OS.gtk_widget_set_direction (fixedHandle, cast(GtkTextDirection)OS.GTK_TEXT_DIR_RTL);
 	}
 }
 
@@ -3589,27 +3629,27 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  *	</ul>
  */
-public boolean setParent (Composite parent) {
+public bool setParent (Composite parent) {
 	checkWidget ();
-	if (parent == null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
+	if (parent is null) SWT.error (SWT.ERROR_NULL_ARGUMENT);
 	if (parent.isDisposed()) SWT.error (SWT.ERROR_INVALID_ARGUMENT);
-	if (this.parent == parent) return true;
+	if (this.parent is parent) return true;
 	if (!isReparentable ()) return false;
 	releaseParent ();
 	Shell newShell = parent.getShell (), oldShell = getShell ();
 	Decorations newDecorations = parent.menuShell (), oldDecorations = menuShell ();
 	Menu [] menus = oldShell.findMenus (this);
-	if (oldShell != newShell || oldDecorations != newDecorations) {
+	if (oldShell !is newShell || oldDecorations !is newDecorations) {
 		fixChildren (newShell, oldShell, newDecorations, oldDecorations, menus);
 		newDecorations.fixAccelGroup ();
 		oldDecorations.fixAccelGroup ();
 	}
-	int /*long*/ topHandle = topHandle ();
-	int /*long*/ newParent = parent.parentingHandle();
+	auto topHandle = topHandle ();
+	auto newParent = parent.parentingHandle();
 	int x = OS.GTK_WIDGET_X (topHandle);
 	int y = OS.GTK_WIDGET_Y (topHandle);
 	OS.gtk_widget_reparent (topHandle, newParent);
-	OS.gtk_fixed_move (newParent, topHandle, x, y);
+	OS.gtk_fixed_move (cast(GtkFixed*)newParent, topHandle, x, y);
 	this.parent = parent;
 	setZOrder (null, false, true);
 	return true;
@@ -3617,13 +3657,13 @@
 
 void setParentBackground () {
 	setBackgroundColor (handle, null);
-	if (fixedHandle != 0) setBackgroundColor (fixedHandle, null);
+	if (fixedHandle !is null) setBackgroundColor (fixedHandle, null);
 }
 
-void setParentWindow (int /*long*/ widget) {
+void setParentWindow (GtkWidget* widget) {
 }
 
-boolean setRadioSelection (boolean value) {
+bool setRadioSelection (bool value) {
 	return false;
 }
 
@@ -3647,41 +3687,41 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  *
- * @see #redraw(int, int, int, int, boolean)
+ * @see #redraw(int, int, int, int, bool)
  * @see #update()
  */
-public void setRedraw (boolean redraw) {
+public void setRedraw (bool redraw) {
 	checkWidget();
 	if (redraw) {
-		if (--drawCount == 0) {
-			if (redrawWindow != 0) {
-				int /*long*/ window = paintWindow ();
+		if (--drawCount is 0) {
+			if (redrawWindow !is null) {
+				auto window = paintWindow ();
 				/* Explicitly hiding the window avoids flicker on GTK+ >= 2.6 */
 				OS.gdk_window_hide (redrawWindow);
 				OS.gdk_window_destroy (redrawWindow);
-				OS.gdk_window_set_events (window, OS.gtk_widget_get_events (paintHandle ()));
-				redrawWindow = 0;
+				OS.gdk_window_set_events (window, cast(GdkEventMask)OS.gtk_widget_get_events (paintHandle ()));
+				redrawWindow = null;
 			}
 		}
 	} else {
-		if (drawCount++ == 0) {
-			if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_REALIZED) != 0) {
-				int /*long*/ window = paintWindow ();
+		if (drawCount++ is 0) {
+			if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_REALIZED) !is 0) {
+				auto window = paintWindow ();
 				Rectangle rect = getBounds ();
-				GdkWindowAttr attributes = new GdkWindowAttr ();
+				GdkWindowAttr* attributes = new GdkWindowAttr ();
 				attributes.width = rect.width;
 				attributes.height = rect.height;
 				attributes.event_mask = OS.GDK_EXPOSURE_MASK;
 				attributes.window_type = OS.GDK_WINDOW_CHILD;
 				redrawWindow = OS.gdk_window_new (window, attributes, 0);
-				if (redrawWindow != 0) {
+				if (redrawWindow !is null) {
 					int mouseMask = OS.GDK_BUTTON_PRESS_MASK | OS.GDK_BUTTON_RELEASE_MASK |
 						OS.GDK_ENTER_NOTIFY_MASK | OS.GDK_LEAVE_NOTIFY_MASK |
 						OS.GDK_POINTER_MOTION_MASK | OS.GDK_POINTER_MOTION_HINT_MASK |
 						OS.GDK_BUTTON_MOTION_MASK | OS.GDK_BUTTON1_MOTION_MASK |
 						OS.GDK_BUTTON2_MOTION_MASK | OS.GDK_BUTTON3_MOTION_MASK;
-					OS.gdk_window_set_events (window, OS.gdk_window_get_events (window) & ~mouseMask);
-					OS.gdk_window_set_back_pixmap (redrawWindow, 0, false);
+					OS.gdk_window_set_events (window, cast(GdkEventMask)(OS.gdk_window_get_events (window) & ~mouseMask));
+					OS.gdk_window_set_back_pixmap (redrawWindow, null, false);
 					OS.gdk_window_show (redrawWindow);
 				}
 			}
@@ -3689,10 +3729,10 @@
 	}
 }
 
-boolean setTabGroupFocus (boolean next) {
+bool setTabGroupFocus (bool next) {
 	return setTabItemFocus (next);
 }
-boolean setTabItemFocus (boolean next) {
+bool setTabItemFocus (bool next) {
 	if (!isShowing ()) return false;
 	return forceFocus ();
 }
@@ -3701,20 +3741,20 @@
  * 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)
+ * @param str the new tool tip text (or null)
  *
  * @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 setToolTipText (String string) {
+public void setToolTipText (char[] str) {
 	checkWidget();
-	setToolTipText (_getShell (), string);
-	toolTipText = string;
+	setToolTipText (_getShell (), str);
+	toolTipText = str;
 }
 
-void setToolTipText (Shell shell, String newString) {
+void setToolTipText (Shell shell, char[] newString) {
 	shell.setToolTipText (eventHandle (), newString);
 }
 
@@ -3734,10 +3774,10 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
-public void setVisible (boolean visible) {
+public void setVisible (bool visible) {
 	checkWidget();
-	if (((state & HIDDEN) == 0) == visible) return;
-	int /*long*/ topHandle = topHandle();
+	if (((state & HIDDEN) is 0) is visible) return;
+	auto topHandle = topHandle();
 	if (visible) {
 		/*
 		* It is possible (but unlikely), that application
@@ -3747,8 +3787,8 @@
 		sendEvent (SWT.Show);
 		if (isDisposed ()) return;
 		state &= ~HIDDEN;
-		if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) == 0) {
-			if (enableWindow != 0) OS.gdk_window_show_unraised (enableWindow);
+		if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) is 0) {
+			if (enableWindow !is null) OS.gdk_window_show_unraised (enableWindow);
 			OS.gtk_widget_show (topHandle);
 		}
 	} else {
@@ -3762,13 +3802,13 @@
 		* temporarily clear and set the GTK_VISIBLE flag.
 		*/
 		Control control = null;
-		boolean fixFocus = false;
-		if (display.focusEvent != SWT.FocusOut) {
+		bool fixFocus_ = false;
+		if (display.focusEvent !is SWT.FocusOut) {
 			control = display.getFocusControl ();
-			fixFocus = isFocusAncestor (control);
+			fixFocus_ = isFocusAncestor (control);
 		}
 		state |= HIDDEN;
-		if (fixFocus) {
+		if (fixFocus_) {
 			OS.GTK_WIDGET_UNSET_FLAGS (topHandle, OS.GTK_VISIBLE);
 			fixFocus (control);
 			if (isDisposed ()) return;
@@ -3776,28 +3816,28 @@
 		}
 		OS.gtk_widget_hide (topHandle);
 		if (isDisposed ()) return;
-		if (enableWindow != 0) OS.gdk_window_hide (enableWindow);
+		if (enableWindow !is null) OS.gdk_window_hide (enableWindow);
 		sendEvent (SWT.Hide);
 	}
 }
 
-void setZOrder (Control sibling, boolean above, boolean fixRelations) {
+void setZOrder (Control sibling, bool above, bool fixRelations) {
 	 setZOrder (sibling, above, fixRelations, true);
 }
 
-void setZOrder (Control sibling, boolean above, boolean fixRelations, boolean fixChildren) {
+void setZOrder (Control sibling, bool above, bool fixRelations, bool fixChildren) {
 	int index = 0, siblingIndex = 0, oldNextIndex = -1;
 	Control[] children = null;
 	if (fixRelations) {
 		/* determine the receiver's and sibling's indexes in the parent */
 		children = parent._getChildren ();
 		while (index < children.length) {
-			if (children [index] == this) break;
+			if (children [index] is this) break;
 			index++;
 		}
-		if (sibling != null) {
+		if (sibling !is null) {
 			while (siblingIndex < children.length) {
-				if (children [siblingIndex] == sibling) break;
+				if (children [siblingIndex] is sibling) break;
 				siblingIndex++;
 			}
 		}
@@ -3807,7 +3847,7 @@
 			oldNextIndex = index + 1;
 			children [oldNextIndex].removeRelation ();
 		}
-		if (sibling != null) {
+		if (sibling !is null) {
 			if (above) {
 				sibling.removeRelation ();
 			} else {
@@ -3818,35 +3858,35 @@
 		}
 	}
 
-	int /*long*/ topHandle = topHandle ();
-	int /*long*/ siblingHandle = sibling != null ? sibling.topHandle () : 0;
-	int /*long*/ window = OS.GTK_WIDGET_WINDOW (topHandle);
-	if (window != 0) {
-		int /*long*/ siblingWindow = 0;
-		if (sibling != null) {
-			if (above && sibling.enableWindow != 0) {
+	auto topHandle = topHandle ();
+	auto siblingHandle = sibling !is null ? sibling.topHandle () : null;
+	auto window = OS.GTK_WIDGET_WINDOW (topHandle);
+	if (window !is null) {
+		GdkWindow* siblingWindow;
+		if (sibling !is null) {
+			if (above && sibling.enableWindow !is null) {
 				siblingWindow = enableWindow;
 			} else {
 				siblingWindow = OS.GTK_WIDGET_WINDOW (siblingHandle);
 			}
 		}
-		int /*long*/ redrawWindow = fixChildren ? parent.redrawWindow : 0;
-		if (!OS.GDK_WINDOWING_X11 () || (siblingWindow == 0 && (!above || redrawWindow == 0))) {
+		auto redrawWindow = fixChildren ? parent.redrawWindow : null;
+		if (!OS.GDK_WINDOWING_X11 () || (siblingWindow is null && (!above || redrawWindow is null))) {
 			if (above) {
 				OS.gdk_window_raise (window);
-				if (redrawWindow != 0) OS.gdk_window_raise (redrawWindow);
-				if (enableWindow != 0) OS.gdk_window_raise (enableWindow);
+				if (redrawWindow !is null) OS.gdk_window_raise (redrawWindow);
+				if (enableWindow !is null) OS.gdk_window_raise (enableWindow);
 			} else {
-				if (enableWindow != 0) OS.gdk_window_lower (enableWindow);
+				if (enableWindow !is null) OS.gdk_window_lower (enableWindow);
 				OS.gdk_window_lower (window);
 			}
 		} else {
-			XWindowChanges changes = new XWindowChanges ();
-			changes.sibling = OS.gdk_x11_drawable_get_xid (siblingWindow != 0 ? siblingWindow : redrawWindow);
+			XWindowChanges* changes = new XWindowChanges ();
+			changes.sibling = OS.gdk_x11_drawable_get_xid (cast(GdkDrawable*)(siblingWindow !is null ? siblingWindow : redrawWindow));
 			changes.stack_mode = above ? OS.Above : OS.Below;
-			if (redrawWindow != 0 && siblingWindow == 0) changes.stack_mode = OS.Below;
-			int /*long*/ xDisplay = OS.gdk_x11_drawable_get_xdisplay (window);
-			int /*long*/ xWindow = OS.gdk_x11_drawable_get_xid (window);
+			if (redrawWindow !is null && siblingWindow is null) changes.stack_mode = OS.Below;
+			auto xDisplay = OS.gdk_x11_drawable_get_xdisplay (cast(GdkDrawable*)window);
+			auto xWindow = OS.gdk_x11_drawable_get_xid (cast(GdkDrawable*)window);
 			int xScreen = OS.XDefaultScreen (xDisplay);
 			int flags = OS.CWStackMode | OS.CWSibling;
 			/*
@@ -3859,10 +3899,10 @@
 			* behaves the same as XConfigureWindow ().
 			*/
 			OS.XReconfigureWMWindow (xDisplay, xWindow, xScreen, flags, changes);
-			if (enableWindow != 0) {
-				changes.sibling = OS.gdk_x11_drawable_get_xid (window);
+			if (enableWindow !is null) {
+				changes.sibling = OS.gdk_x11_drawable_get_xid (cast(GdkDrawable*)window);
 				changes.stack_mode = OS.Above;
-				xWindow = OS.gdk_x11_drawable_get_xid (enableWindow);
+				xWindow = OS.gdk_x11_drawable_get_xid (cast(GdkDrawable*)enableWindow);
 				OS.XReconfigureWMWindow (xDisplay, xWindow, xScreen, flags, changes);
 			}
 		}
@@ -3879,7 +3919,7 @@
 
 	if (fixRelations) {
 		/* determine the receiver's new index in the parent */
-		if (sibling != null) {
+		if (sibling !is null) {
 			if (above) {
 				index = siblingIndex - (index < siblingIndex ? 1 : 0);
 			} else {
@@ -3901,10 +3941,10 @@
 		if (index + 1 < children.length) {
 			addRelation (children [index + 1]);
 		}
-		if (oldNextIndex != -1) {
+		if (oldNextIndex !is -1) {
 			if (oldNextIndex <= index) oldNextIndex--;
 			/* the last two conditions below ensure that duplicate relations are not hooked */
-			if (0 < oldNextIndex && oldNextIndex != index && oldNextIndex != index + 1) {
+			if (0 < oldNextIndex && oldNextIndex !is index && oldNextIndex !is index + 1) {
 				children [oldNextIndex - 1].addRelation (children [oldNextIndex]);
 			}
 		}
@@ -3912,24 +3952,24 @@
 }
 
 void setWidgetBackground  () {
-	if (fixedHandle != 0) {
-		int /*long*/ style = OS.gtk_widget_get_modifier_style (fixedHandle);
+	if (fixedHandle !is null) {
+		auto style = OS.gtk_widget_get_modifier_style (fixedHandle);
 		OS.gtk_widget_modify_style (fixedHandle, style);
 	}
-	int /*long*/ style = OS.gtk_widget_get_modifier_style (handle);
+	auto style = OS.gtk_widget_get_modifier_style (handle);
 	OS.gtk_widget_modify_style (handle, style);
 }
 
-boolean showMenu (int x, int y) {
+bool showMenu (int x, int y) {
 	Event event = new Event ();
 	event.x = x;
 	event.y = y;
 	sendEvent (SWT.MenuDetect, event);
 	if (event.doit) {
-		if (menu != null && !menu.isDisposed ()) {
-			boolean hooksKeys = hooks (SWT.KeyDown) || hooks (SWT.KeyUp);
-			menu.createIMMenu (hooksKeys ? imHandle() : 0);
-			if (event.x != x || event.y != y) {
+		if (menu !is null && !menu.isDisposed ()) {
+			bool hooksKeys = hooks (SWT.KeyDown) || hooks (SWT.KeyUp);
+			menu.createIMMenu (hooksKeys ? imHandle() : null);
+			if (event.x !is x || event.y !is y) {
 				menu.setLocation (event.x, event.y);
 			}
 			menu.setVisible (true);
@@ -3942,15 +3982,15 @@
 void showWidget () {
 	// Comment this line to disable zero-sized widgets
 	state |= ZERO_WIDTH | ZERO_HEIGHT;
-	int /*long*/ topHandle = topHandle ();
-	int /*long*/ parentHandle = parent.parentingHandle ();
+	auto topHandle = topHandle ();
+	auto parentHandle = parent.parentingHandle ();
 	parent.setParentWindow (topHandle);
-	OS.gtk_container_add (parentHandle, topHandle);
-	if (handle != 0 && handle != topHandle) OS.gtk_widget_show (handle);
-	if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) == 0) {
-		if (fixedHandle != 0) OS.gtk_widget_show (fixedHandle);
+	OS.gtk_container_add (cast(GtkContainer*)parentHandle, topHandle);
+	if (handle !is null && handle !is topHandle) OS.gtk_widget_show (handle);
+	if ((state & (ZERO_WIDTH | ZERO_HEIGHT)) is 0) {
+		if (fixedHandle !is null) OS.gtk_widget_show (fixedHandle);
 	}
-	if (fixedHandle != 0) fixStyle (fixedHandle);
+	if (fixedHandle !is null) fixStyle (fixedHandle);
 }
 
 void sort (int [] items) {
@@ -3984,7 +4024,7 @@
  *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
  * </ul>
  */
-public boolean traverse (int traversal) {
+public bool traverse (int traversal) {
 	checkWidget ();
 	Event event = new Event ();
 	event.doit = true;
@@ -3992,23 +4032,23 @@
 	return traverse (event);
 }
 
-boolean translateMnemonic (Event event, Control control) {
-	if (control == this) return false;
+bool translateMnemonic (Event event, Control control) {
+	if (control is this) return false;
 	if (!isVisible () || !isEnabled ()) return false;
-	event.doit = this == display.mnemonicControl || mnemonicMatch (event.character);
+	event.doit = this is display.mnemonicControl || mnemonicMatch (event.character);
 	return traverse (event);
 }
 
-boolean translateMnemonic (int keyval, GdkEventKey gdkEvent) {
+bool translateMnemonic (int keyval, GdkEventKey* gdkEvent) {
 	int key = OS.gdk_keyval_to_unicode (keyval);
 	if (key < 0x20) return false;
-	if (gdkEvent.state == 0) {
+	if (gdkEvent.state is 0) {
 		int code = traversalCode (keyval, gdkEvent);
-		if ((code & SWT.TRAVERSE_MNEMONIC) == 0) return false;
+		if ((code & SWT.TRAVERSE_MNEMONIC) is 0) return false;
 	} else {
 		Shell shell = _getShell ();
 		int mask = OS.GDK_CONTROL_MASK | OS.GDK_SHIFT_MASK | OS.GDK_MOD1_MASK;
-		if ((gdkEvent.state & mask) != OS.gtk_window_get_mnemonic_modifier (shell.shellHandle)) return false;
+		if ((gdkEvent.state & mask) !is OS.gtk_window_get_mnemonic_modifier (cast(GtkWindow*)shell.shellHandle)) return false;
 	}
 	Decorations shell = menuShell ();
 	if (shell.isVisible () && shell.isEnabled ()) {
@@ -4021,11 +4061,11 @@
 	return false;
 }
 
-boolean translateTraversal (GdkEventKey keyEvent) {
+bool translateTraversal (GdkEventKey* keyEvent) {
 	int detail = SWT.TRAVERSE_NONE;
 	int key = keyEvent.keyval;
 	int code = traversalCode (key, keyEvent);
-	boolean all = false;
+	bool all = false;
 	switch (key) {
 		case OS.GDK_Escape: {
 			all = true;
@@ -4040,7 +4080,7 @@
 		}
 		case OS.GDK_ISO_Left_Tab:
 		case OS.GDK_Tab: {
-			boolean next = (keyEvent.state & OS.GDK_SHIFT_MASK) == 0;
+			bool next = (keyEvent.state & OS.GDK_SHIFT_MASK) is 0;
 			detail = next ? SWT.TRAVERSE_TAB_NEXT : SWT.TRAVERSE_TAB_PREVIOUS;
 			break;
 		}
@@ -4048,22 +4088,22 @@
 		case OS.GDK_Left:
 		case OS.GDK_Down:
 		case OS.GDK_Right: {
-			boolean next = key == OS.GDK_Down || key == OS.GDK_Right;
+			bool next = key is OS.GDK_Down || key is OS.GDK_Right;
 			detail = next ? SWT.TRAVERSE_ARROW_NEXT : SWT.TRAVERSE_ARROW_PREVIOUS;
 			break;
 		}
 		case OS.GDK_Page_Up:
 		case OS.GDK_Page_Down: {
 			all = true;
-			if ((keyEvent.state & OS.GDK_CONTROL_MASK) == 0) return false;
-			detail = key == OS.GDK_Page_Down ? SWT.TRAVERSE_PAGE_NEXT : SWT.TRAVERSE_PAGE_PREVIOUS;
+			if ((keyEvent.state & OS.GDK_CONTROL_MASK) is 0) return false;
+			detail = key is OS.GDK_Page_Down ? SWT.TRAVERSE_PAGE_NEXT : SWT.TRAVERSE_PAGE_PREVIOUS;
 			break;
 		}
 		default:
 			return false;
 	}
 	Event event = new Event ();
-	event.doit = (code & detail) != 0;
+	event.doit = (code & detail) !is 0;
 	event.detail = detail;
 	event.time = keyEvent.time;
 	if (!setKeyState (event, keyEvent)) return false;
@@ -4072,20 +4112,20 @@
 	do {
 		if (control.traverse (event)) return true;
 		if (!event.doit && control.hooks (SWT.Traverse)) return false;
-		if (control == shell) return false;
+		if (control is shell) return false;
 		control = control.parent;
-	} while (all && control != null);
+	} while (all && control !is null);
 	return false;
 }
 
-int traversalCode (int key, GdkEventKey event) {
+int traversalCode (int key, GdkEventKey* event) {
 	int code = SWT.TRAVERSE_RETURN | SWT.TRAVERSE_TAB_NEXT |  SWT.TRAVERSE_TAB_PREVIOUS | SWT.TRAVERSE_PAGE_NEXT | SWT.TRAVERSE_PAGE_PREVIOUS;
 	Shell shell = getShell ();
-	if (shell.parent != null) code |= SWT.TRAVERSE_ESCAPE;
+	if (shell.parent !is null) code |= SWT.TRAVERSE_ESCAPE;
 	return code;
 }
 
-boolean traverse (Event event) {
+bool traverse (Event event) {
 	/*
 	* It is possible (but unlikely), that application
 	* code could have disposed the widget in the traverse
@@ -4110,18 +4150,18 @@
 	return false;
 }
 
-boolean traverseEscape () {
+bool traverseEscape () {
 	return false;
 }
 
-boolean traverseGroup (boolean next) {
+bool traverseGroup (bool next) {
 	Control root = computeTabRoot ();
 	Control group = computeTabGroup ();
 	Control [] list = root.computeTabList ();
 	int length = list.length;
 	int index = 0;
 	while (index < length) {
-		if (list [index] == group) break;
+		if (list [index] is group) break;
 		index++;
 	}
 	/*
@@ -4130,9 +4170,9 @@
 	* or out events.  Ensure that a disposed widget is
 	* not accessed.
 	*/
-	if (index == length) return false;
+	if (index is length) return false;
 	int start = index, offset = (next) ? 1 : -1;
-	while ((index = ((index + offset + length) % length)) != start) {
+	while ((index = ((index + offset + length) % length)) !is start) {
 		Control control = list [index];
 		if (!control.isDisposed () && control.setTabGroupFocus (next)) {
 			return true;
@@ -4142,12 +4182,12 @@
 	return group.setTabGroupFocus (next);
 }
 
-boolean traverseItem (boolean next) {
+bool traverseItem (bool next) {
 	Control [] children = parent._getChildren ();
 	int length = children.length;
 	int index = 0;
 	while (index < length) {
-		if (children [index] == this) break;
+		if (children [index] is this) break;
 		index++;
 	}
 	/*
@@ -4156,9 +4196,9 @@
 	* or out events.  Ensure that a disposed widget is
 	* not accessed.
 	*/
-	if (index == length) return false;
+	if (index is length) return false;
 	int start = index, offset = (next) ? 1 : -1;
-	while ((index = (index + offset + length) % length) != start) {
+	while ((index = (index + offset + length) % length) !is start) {
 		Control child = children [index];
 		if (!child.isDisposed () && child.isTabItem ()) {
 			if (child.setTabItemFocus (next)) return true;
@@ -4167,15 +4207,15 @@
 	return false;
 }
 
-boolean traverseReturn () {
+bool traverseReturn () {
 	return false;
 }
 
-boolean traversePage (boolean next) {
+bool traversePage (bool next) {
 	return false;
 }
 
-boolean traverseMnemonic (char key) {
+bool traverseMnemonic (char key) {
 	return mnemonicHit (key);
 }
 
@@ -4194,7 +4234,7 @@
  * </ul>
  *
  * @see #redraw()
- * @see #redraw(int, int, int, int, boolean)
+ * @see #redraw(int, int, int, int, bool)
  * @see PaintListener
  * @see SWT#Paint
  */
@@ -4203,11 +4243,11 @@
 	update (false, true);
 }
 
-void update (boolean all, boolean flush) {
+void update (bool all, bool flush) {
 //	checkWidget();
 	if (!OS.GTK_WIDGET_VISIBLE (topHandle ())) return;
-	if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_REALIZED) == 0) return;
-	int /*long*/ window = paintWindow ();
+	if ((OS.GTK_WIDGET_FLAGS (handle) & OS.GTK_REALIZED) is 0) return;
+	auto window = paintWindow ();
 	if (flush) display.flushExposes (window, all);
 	OS.gdk_window_process_updates (window, all);
 	OS.gdk_flush ();
@@ -4216,34 +4256,34 @@
 void updateBackgroundMode () {
 	int oldState = state & PARENT_BACKGROUND;
 	checkBackground ();
-	if (oldState != (state & PARENT_BACKGROUND)) {
+	if (oldState !is (state & PARENT_BACKGROUND)) {
 		setBackground ();
 	}
 }
 
-void updateLayout (boolean all) {
+void updateLayout (bool all) {
 	/* Do nothing */
 }
 
-int /*long*/ windowProc (int /*long*/ handle, int /*long*/ arg0, int /*long*/ user_data) {
-	switch ((int)/*64*/user_data) {
+int /*long*/ windowProc (GtkWidget* handle, int /*long*/ arg0, int /*long*/ user_data) {
+	switch (cast(int)/*64*/user_data) {
 		case EXPOSE_EVENT_INVERSE: {
-			if ((OS.GTK_VERSION <  OS.VERSION (2, 8, 0)) && ((state & OBSCURED) == 0)) {
+			if ((OS.GTK_VERSION <  OS.buildVERSION (2, 8, 0)) && ((state & OBSCURED) is 0)) {
 				Control control = findBackgroundControl ();
-				if (control != null && control.backgroundImage != null) {
-					GdkEventExpose gdkEvent = new GdkEventExpose ();
-					OS.memmove (gdkEvent, arg0, GdkEventExpose.sizeof);
-					int /*long*/ paintWindow = paintWindow();
-					int /*long*/ window = gdkEvent.window;
-					if (window != paintWindow) break;
-					int /*long*/ gdkGC = OS.gdk_gc_new (window);
+				if (control !is null && control.backgroundImage !is null) {
+					GdkEventExpose* gdkEvent = new GdkEventExpose ();
+					memmove (gdkEvent, cast(void*)arg0, GdkEventExpose.sizeof);
+					auto paintWindow = paintWindow();
+					auto window = gdkEvent.window;
+					if (window !is paintWindow) break;
+					auto gdkGC = OS.gdk_gc_new (cast(GdkDrawable*)window);
 					OS.gdk_gc_set_clip_region (gdkGC, gdkEvent.region);
-					int[] dest_x = new int[1], dest_y = new int[1];
-					OS.gtk_widget_translate_coordinates (paintHandle (), control.paintHandle (), 0, 0, dest_x, dest_y);
-					OS.gdk_gc_set_fill (gdkGC, OS.GDK_TILED);
-					OS.gdk_gc_set_ts_origin (gdkGC, -dest_x [0], -dest_y [0]);
-					OS.gdk_gc_set_tile (gdkGC, control.backgroundImage.pixmap);
-					OS.gdk_draw_rectangle (window, gdkGC, 1, gdkEvent.area_x, gdkEvent.area_y, gdkEvent.area_width, gdkEvent.area_height);
+					int dest_x, dest_y;
+					OS.gtk_widget_translate_coordinates (paintHandle (), control.paintHandle (), 0, 0, &dest_x, &dest_y);
+					OS.gdk_gc_set_fill (gdkGC, cast(GdkFill)OS.GDK_TILED);
+					OS.gdk_gc_set_ts_origin (gdkGC, -dest_x, -dest_y);
+					OS.gdk_gc_set_tile (gdkGC, cast(GdkPixmap*)control.backgroundImage.pixmap);
+ 					OS.gdk_draw_rectangle (cast(GdkDrawable*)window, gdkGC, 1, gdkEvent.area.x, gdkEvent.area.y, gdkEvent.area.width, gdkEvent.area.height);
 					OS.g_object_unref (gdkGC);
 				}
 			}
@@ -4253,4 +4293,3 @@
 	return super.windowProc (handle, arg0, user_data);
 }
 }
-+++/
\ No newline at end of file