is gtk_file_chooser_set_extra_widget redundant?

[Claudio Fontana <sick_soul yahoo it>]

Hello,

while extending a GtkFileChooserDialog with some
custom widgets using the same hook as with any other
Dialog (->vbox), I noticed that GtkFileChooser offers
a dedicated method
gtk_file_chooser_set_extra_widget().

I tried using it and shows exactly the same as using
->vbox.

Isn't it redundant? What are the differences between
the two ways, and which is preferable?

Thanks

Claudio



                
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