[glade--](repost) Newbie help - Dialog box signals

(Apologies for the repost.)

Hello all.  I am new to Gtk, Gtkmm, and Glade, and I am experimenting
with a little program to help me learn these libraries/tools.  I am
attempting to create a custom pop up dialog box.  I've used the Gtk+
Basic "Dialog" tool to do this, and added a couple of buttons and a text
entry.  My problem is that when I try to add a signal to the buttons on
the pop up dialog, they do not save.  When I build the project, the
signals are not created in the _glade files.  

I can't see any other way around this than to edit the _glade files
manually, which seems to go against the entire _glade philosophy.  Is
this a bug in Glade/Glademm, or am I doing something wrong?

Thanks,
Dan