Antonio,
What I'm currently scratching my head over, is the ability to use arrows or pageup/down in the calendar. Keypreview should allow the form to intercept the keypresses. When I get time, I'll work on this!
Very impressed, though. Also I'm going to remove the titlebar in the calendar and already have added ESC/Alt+f4 keypresses to close it.
"... They ne'er cared for us
yet: suffer us to famish, and their store-houses
crammed with grain; make edicts for usury, to
support usurers; repeal daily any wholesome act
established against the rich, and provide more
piercing statutes daily, to chain up and restrain
the poor. If the wars eat us not up, they will; and
there's all the love they bear us."
-- Shakespeare: Coriolanus, Act 1, scene 1
