CellRendererCombo Example Problem

[Dustin Moore <me dustinmoore net>]

Hi,
I am trying to get a CellRendererCombo to work in a tree view, so I am
using the example provided by:

http://svn.gnome.org/svn/gtkmm-documentation/trunk/examples/book/treeview/combo_renderer/

But after I successfully compile and run the example, I am unable to
interact properly with the combo boxes.  If I double click on the
combo box, the list flashes like it is constantly being redraw and my
CPU goes to 100%.  I am also unable to select any of the items on the
drop down.

I have changed nothing in the files and compiled using the commands:

g++ -Wall `pkg-config --cflags gtkmm-2.4` -c examplewindow.cc -o examplewindow.o
g++ -Wall `pkg-config --cflags gtkmm-2.4` -c main.cc -o main.o
g++ `pkg-config --libs gtkmm-2.4` -o main main.o examplewindow.o

I am using Ubuntu with the gtkmm packages installed from the normal
repositories.

Is anybody else having this issue? Or, on a slightly different trend,
is there a better way to have a combo box in a tree view?

Thanks in advance,
Dustin Moore
me dustinmoore net