SWT.DROP_DOWN style has no effect on DateTime widget

[JohnnyK]

Under Windows 7 64bit Enterprise the SWT.DROP_DOWN style has no 
effect on the DateTime widget.  The widget does not show the date 
in a combo box with a dropdown button.  It shows in the default 
with the up/down spin buttons that are found on the Spin widget.

Below is a slightly modified version of Snippet250 to test out 
this issue.

/*******************************************************************************
  * 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:
  *     Thomas Demmer <t_demmer AT web DOT de>
  
*******************************************************************************/
module org.eclipse.swt.snippets.Snippet250;

/*
  * DateTime example snippet: create a DateTime calendar and a 
DateTime time.
  *
  * For a list of all SWT example snippets see
  * http://www.eclipse.org/swt/snippets/
  */
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.RowLayout;
import org.eclipse.swt.widgets.DateTime;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

import java.lang.all;

version(Tango){
     import tango.io.Stdout;
} else { // Phobos
     import std.stdio;
}

void main () {
     Display display = new Display ();
     Shell shell = new Shell (display);
     shell.setLayout (new RowLayout ());

     DateTime calendar = new DateTime (shell, SWT.CALENDAR);
     calendar.addSelectionListener (new class SelectionAdapter{
         override
         void widgetSelected (SelectionEvent e) {
             version(Tango){
                 Stdout("calendar date changed\n");
                 Stdout.flush();
             } else { // Phobos
                 writeln("calendar date changed");
             }
         }
     });

     DateTime date = new DateTime (shell, SWT.BORDER | SWT.DATE | 
SWT.DROP_DOWN);
     date.addSelectionListener (new class SelectionAdapter{
         override
         void widgetSelected (SelectionEvent e) {
             version(Tango){
                 Stdout("date changed\n");
                 Stdout.flush();
             } else { // Phobos
                 writeln("date changed");
             }
         }
     });	
     DateTime time = new DateTime (shell, SWT.TIME);
     time.addSelectionListener (new class SelectionAdapter{
         override
         void widgetSelected (SelectionEvent e) {
             version(Tango){
                 Stdout("time changed\n");
                 Stdout.flush();
             } else { // Phobos
                 writeln("time changed");
             }
         }
     });

     shell.pack ();
     shell.open ();
     while (!shell.isDisposed ()) {
         if (!display.readAndDispatch ()) display.sleep ();
     }
     display.dispose ();
}


I have tried it with and without the border even tried it with 
just SWT.DROP_DOWN style and that did not work either.  This is 
not a critical issue I just wanted to bring it to someones 
attention.  I am not sure what version of SWT DWT is based on 
these days so I don't know what version of DWT I have.  I just 
downloaded a fresh copy of DWT a couple of weeks ago.

I am using dmd v2.064 and rdmd build 20131011

I compiled the code above with the following line from my install 
of dwt directory.

rdmd build swtsnippets[Snippet250]