--- a/dwt/widgets/Display.d	Thu Jan 31 20:26:30 2008 +0100
+++ b/dwt/widgets/Display.d	Thu Jan 31 23:19:20 2008 +0100
@@ -753,7 +753,7 @@
     widget.cellDataProc (tree_column, cell, tree_model, iter, data);
 }
 
-protected void checkDevice () {
+protected override void checkDevice () {
     if (thread is null) error (DWT.ERROR_WIDGET_DISPOSED);
     if (thread !is Thread.getThis ()) error (DWT.ERROR_THREAD_INVALID_ACCESS);
     if (isDisposed ()) error (DWT.ERROR_DEVICE_DISPOSED);
@@ -879,7 +879,7 @@
  *
  * @see #init
  */
-protected void create (DeviceData data) {
+protected override void create (DeviceData data) {
     checkSubclass ();
     checkDisplay(thread = Thread.getThis (), false);
     createDisplay (data);
@@ -1080,7 +1080,7 @@
  * @see Device#dispose
  * @see #release
  */
-protected void destroy () {
+protected override void destroy () {
     if (this is Default) Default = null;
     deregister ();
     destroyDisplay ();
@@ -2306,7 +2306,7 @@
  *
  * @see #create
  */
-protected void init () {
+protected override void init () {
     super.init ();
     initializeCallbacks ();
     initializeSystemColors ();
@@ -3032,7 +3032,7 @@
  * @see Device#dispose
  * @see #destroy
  */
-protected void release () {
+protected override void release () {
     sendEvent (DWT.Dispose, new Event ());
     Shell [] shells = getShells ();
     for (int i=0; i<shells.length; i++) {