--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/snippets/canvas/Snippet21.d	Tue May 20 12:10:54 2008 +0900
@@ -0,0 +1,100 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2004 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * D Port:
+ *     Bill Baxter <wbaxter> at gmail com
+ *******************************************************************************/
+module snippets.canvas.Snippet21;
+
+/*
+ * Canvas example snippet: implement tab traversal (behave like a tab group)
+ *
+ * For a list of all SWT example snippets see
+ * http://www.eclipse.org/swt/snippets/
+ */
+import dwt.DWT;
+import dwt.graphics.Color;
+import dwt.widgets.Display;
+import dwt.widgets.Shell;
+import dwt.widgets.Listener;
+import dwt.widgets.Event;
+import dwt.widgets.Button;
+import dwt.widgets.Text;
+import dwt.widgets.Canvas;
+
+import tango.io.Stdout;
+
+import dwt.dwthelper.utils;
+
+void main () {
+	Display display = new Display ();
+	final Color red = display.getSystemColor (DWT.COLOR_RED);
+	final Color blue = display.getSystemColor (DWT.COLOR_BLUE);
+	Shell shell = new Shell (display);
+	Button b = new Button (shell, DWT.PUSH);
+	b.setBounds (10, 10, 100, 32);
+	b.setText ("Button");
+	shell.setDefaultButton (b);
+	final Canvas c = new Canvas (shell, DWT.BORDER);
+	c.setBounds (10, 50, 100, 32);
+
+    void onTraverse(Event e, Canvas c) {
+        switch (e.detail) {
+            /* Do tab group traversal */
+        case DWT.TRAVERSE_ESCAPE:
+        case DWT.TRAVERSE_RETURN:
+        case DWT.TRAVERSE_TAB_NEXT:	
+        case DWT.TRAVERSE_TAB_PREVIOUS:
+        case DWT.TRAVERSE_PAGE_NEXT:	
+        case DWT.TRAVERSE_PAGE_PREVIOUS:
+            e.doit = true;
+            break;
+        }
+    }
+
+    void onFocusIn(Event e, Canvas c) {
+        c.setBackground (red);
+    }
+
+    void onFocusOut(Event e, Canvas c) {
+        c.setBackground (blue);
+    }
+
+    void onKeyDown (Event e, Canvas c) {
+        Stdout("KEY").newline;
+        for (int i=0; i<64; i++) {
+            Color c1 = red, c2 = blue;
+            if (c.isFocusControl ()) {
+                c1 = blue;  c2 = red;
+            }
+            c.setBackground (c1);
+            c.update ();
+            c.setBackground (c2);
+        }
+    }
+
+	c.addListener (DWT.Traverse, dgListener(&onTraverse, c));
+	c.addListener (DWT.FocusIn, dgListener(&onFocusIn, c));
+	c.addListener (DWT.FocusOut, dgListener(&onFocusOut, c));
+	c.addListener (DWT.KeyDown, dgListener(&onKeyDown, c));
+
+	Text t = new Text (shell, DWT.SINGLE | DWT.BORDER);
+	t.setBounds (10, 85, 100, 32);
+
+	Text r = new Text (shell, DWT.MULTI | DWT.BORDER);
+	r.setBounds (10, 120, 100, 32);
+	
+	c.setFocus ();
+	shell.setSize (200, 200);
+	shell.open ();
+	while (!shell.isDisposed()) {
+		if (!display.readAndDispatch ()) display.sleep ();
+	}
+	display.dispose ();
+}