Please help

Hi list,

for more than a week I've been trying to find a good example, but
failed.

Can someone please point me to a "hello world" example that uses
the latest gtkmm3 standards and that has a simple menu bar with
the following content:

.-------------------------------
| File | Mode
.-------------------------------

Where 'File' has the entries:

 Open, Save, Quit

and 'Mode' has the entries:

 'Edit position'
 'Edit game'
 --separator--
 'Show candidates'


I could explain where I all searched and what I all found and
why that doesn't explain how to do this etc, but well. All I
want is just a working example :(.

Thanks,
Carlo