Sorry if this is a duplicate post. I tried earlier, but it did not
seem to post.

I think you can get what you want with the "ShowCheckbox" property.

When checked, a null date has and unchecked checkbox and a dimmed
date. When the underlying table has a valid date the checkbox is
checked and the date is normal color.

When you want to toggle from a null date, you just check the
checkbox.

Rick

--- In IBObjects@yahoogroups.com, "Alan McDonald" <alan@m...> wrote:
> What's the trick to make the IB_DateTimePicker actually update a
date field
> when it's initially set to null?
> If the field has a valid date in it, the picker can edit the value
but if
> it's null, the picker jus updates it to null again.
> Is there a secret?
> Alan