[racket] message-box too small to display title

At Wed, 25 Apr 2012 20:07:49 -0400, Harry Spier wrote:
> Matthew wrote:
> > As for the big icon within the `message-box' dialog, that a common
> > convention, although you have to specify something like
> > MB_ICONEXCLAMATION for MessageBox() to enable it on Windows. The Racket
> > `message-box' dialog defaults to an application-specific icon, which I
> > guess is a Mac OS X convention, but you can override it with a 'caution
> > or 'stop style. There's no icon in the title bar for `message-box'
> > because it's a dialog, and Windows dialogs normally do not have an
> > title-bar icon.
> >
> 
> How do I get rid of the icon in the message-box text area.

There was no way before, but I've added a 'no-icon style.