Ed,
As I said, I don't know a build in feature, however to let it go to the side
of the form when some time is gone, would probably not be my biggest
chalenge, as I wrote.
Just enable a timer and set the ticks when there is a mouse leave and set it
to false at a mouse enter would be my way to try and when the time is over,
hide the control and show a vertical coloured label in the corner of the
form (where the left side is the most easy one). And when on that label is a
mouse enter, hide that and show the calandar again.
When you want it with a pin I think you have to do the drawing yourself and
check at a mouse down where the mouse is in the control, than it becomes of
course a lot more difficult.
However just an idea, never tried
Cor