Gtk layered layout

I am building a simple interface using a 3 row GtkVbox. Inside middle row, I'd like to show a centered image and a small config panel. If config panel is shown, it must appear over the image. How could I simulate a layered panel w开发者_StackOverflow社区here the config panel appers in an upper level than the image. Any ideas?

Regards

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Overlaying widgets on top of each other isn't really what GTK is built for - you might be using the wrong tool for the job. Maybe you should check out Clutter?

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I believe you can use GtkOverlay to put the panel over the image.