[pygtk] shrink window to minimum size when some child widgets are hidden

[Giuseppe Penone]

Hi,
It happens to me many times that after hiding some widgets in the window,
the window keeps the original size
leaving part of the window with just window background (gray) visible.
I'm searching for a solution, but had no luck so far.
Does anybody know how to behave to have the window to shrink to minimum
size given the actual displayed widgets?
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