The Widget Demo is available with dwtlib, screenshot here (scroll down);

     http://code.dlang.org/packages/dwtlib

It is a port of the SWT controldemo, screenshot here;

     https://www.eclipse.org/swt/examples.php

I modified the SWT controldemo to D2, and greatly simplified for beginners like me.

This Widget Demo works great on Windows, but it fails to compile on Ubuntu Linux.
If I edit the source code to reduce the number of tabs, it will compile.
This could be a memory issue in my Ubuntu virtual machine.

Does anyone have cycles to test on a real Linux machine?