formstyle-property

Hello,

has anyone an idea, how
I have to choose the formstyle-property
to get the following state:

A blank mainform, a second smaller form with
a mainmenu. The mainmenu-form hasn't the
formstyle mdichild, because, I want to hide
the form, to show other dialogs on user actions.
An unpleasant way is to use a mdichild formstyle
and then on every user action to destroy the form-
ressources and when the user returns to this form,
to create it. That isn't no elegant programming, I think.
Do you have an idea ?

greetings from Germany

bye Carsten