>>>I'd like my primary form to rsize automatically when the user re-sizes the _Screen.
>>>
>>>I've tried writing to the _Screen.Resize method, but it seems to be read-only.
>>>
>>>Any way to accomplish this? Perhaps I should make the _Screen disappear - but what would happen to my menus?
>>>
>>>TIA
>>
>>_SCREEN does not have events so there is no reliable way to catch resizing. You may look at top-level form design where this thing can be implemented easily.
>
>If you could tell me where I can get started reading about 'top=level form design' it would be appreciated....
>
>TIA

It's simple. You use one form of your project with property ShowWindow=2 (top form) and all other forms with ShowWindow=1 (in Top form). You may open toolbars/menus within top-form, so it behaves exactly like _SCREEN with no controls, but all form PEM (including custom one) available.