Display a popup when showing a container.

Dear all,

I need to show a custom popup to ask some configuration parameters when a frame
is shown to the user for first time (it's shown inside a notebook).

My idea to implement the behaviour was to overload the on_show member functions of
the frame nad use if to display the popup:

  NewDialog dialog();

Do you know if this behaviour could be a problem for Gtkmm? Is there any other way to
implement it?

Thanks in advance.

Joaquim Duran

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