>When I issue the ACTIVATE WINDOW "Calculator" command from my Appointments form , my Appointments form is hidden and the calculator window (calculator window is not a form) is opened.But when I close the calculator the Appointments form does not show , even though it is open.I cannot manipulate or write code to the calculator window as it is not a form but an application file.How can I reactivate my Appointments form or better still how can I open the calculator window on top of my Appointments form , so it is not hidden.
>Thank You All
>Zaraq Bari

The brutal way is to:
ACTIVATE WINDOW "Calculator" in window "yourform"
I guess, you have problems, because your form is defined as top-level.