I don't get why you are checking using the interactivechange method.
This fires for every character you type in the control. If you
want to check a date I would use the Valid() or lostfocus() methods
so you can check the whole date not a half entered date. I only
use the interactivechange method when doing searches where you want
to display partial matches.
LostFocus() does not fire unless and until something else gets
focus. There are actions the user can take that result in nothing
having focus, so LostFocus() is not a reliable place to validate
user-entered contents of controls.
My memory is more dim regarding Valid(), but I believe I
experimented with it and could not get it to work the way I wanted.
Perhaps I was trying to display a MessageBox concerning the user's
entry and it would only display a WAIT WINDOW or something. I don't
know, but that decision was made long ago.
Okay, that was imprecise.
My code isn't validating user data, it's ensuring that the contents
of two properties of the control will always be exactly the same. So
intuitively, the place to do that is InteractiveChange().
My reason for not using LostFocus() is actually because the code must
fire in 100% of cases of user interaction with the GUI, including
cases when nothing gets focus.
In addition to the fact that long ago I couldn't get Valid() to work
the way I expected and therefore simply stopped trying to use it,
since I'm not validating user data in this case, intuitively, Valid()
is not the place for that code. More practically, I don't need a
return value from the code, nor do I want to condition ability to
move to another control on the results of that code.
Ken Dibble
www.stic-cil.org
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