Motivated by Michael Goffioul's success in writing a Win32 application, Paul Ruetz has contributed a small applet (just 111 lines fully in lisp!) which links ECL with the recent QT4 library producing a nice example that works both in Linux and in Windows.
The full package is mirrored in the ECL webpages:
The second package contains a ready-to-run executable that is distributed without guarantee of any kind.
A screenshot of the application is available at the ECL webpage: