example of menu

[haratron <haratron gmail com>]

I can't find any example of a menu (file, edit, help) in gtk-perl. The
best I could find was appwindow.pl in gtk-demo, but that doesn't have
the actual functions implemented, just dummy dialogs.
I'm using Glade.
How am I going to launch the aboutdialog when the user clicks on the
help->about menuitem? Also is there an example that shows how to
achieve typical file->open/file/save/save as functionality?