and force a redraw when successful.  Background color is adjustable.
  Text color is also adjustable, but the user has to set the CF_EFFECTS
  flag first.
- text is output left-right centered, baseline, at the middle
  of the window, and moves with the window.  Text font is adjustable.
- Success and failure MessageBox calls for Color, Font, Open,
  and Save have been removed or suppressed.  They annoyed me after
  awhile, and I suspect they annoyed others, too.  Use my tool! :-)
- cmdlgtst now has the full pathname in the upper left corner; which may
  assist in debugging certain problems -- or it may not. :-)
- usage dialog added