I see that you can create forms in forms as long as you aren't trying to nest MDI windows. If you want to be able to have the ability to bring subforms to the front via a menu similar to the standard "Window" menu how would you do that?
The scenario is this:
Main form has a child form "Child" in it.
Child has "Grandchild 1" in it.
Child has "Grandchild 2" in it.
I would like a "Window" menu in Main that allows the user to select which grandchild form to bring to the front within Child. This Window menu would need to be updated whenever a "grandchild" form opens or closes in Child.