[gtkmm] how to close a tab in notebook with a small [x] button

[cedric <cedric probesys com>]

Hi !

i would like to make it possible to close a tab by clicking on a [x] 
button but i didn't find how to do it.
There is nothing into the API of GTKMM about this.

So if you know how to do that , could you help me pls ?

thanks !