G'day,

In documentation of WidgetPlaceholder we can read this:
« This can be useful for making an interface with a number of distinct 
pages or for showing and hiding menu or status bars. »

But I don't exactly see how to do that: we can't use None for 
original_widget, and there is no « invisible » widget.

So far to (un)hide menus and status bar, I was adding/removing them from 
my containers, so now I wonder if there is not a better method with 
WidgetPlaceholder...

What is the best practice to (un)hide a widget ?

Thanks :)

Goffi

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