pack or grid (or the other way around)?

I am working on a package that I guess would be considered a megawidget
and I vaguely remember reading somewhere that widgets (or was it
applications?) that use pack cannot contain widgets that use grid, or
maybe it was the other way around, which means that if my megawidget
uses pack, nobody would be able to use it inside another widget (or
would that be an application?) that already uses grid, or maybe the
other way around, well, you get the idea.

I also vaguely remember reading that "the other way around" was safe
though, that is, one between pack and grid may contain widgets managed
by the other geometry manager.

Is that correct? I can't seem to find that exact information. I guess
I really need to be sure before I make a commitment to either one
(or the other way around).


--
Luc

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