Resizeable and Expandable columns in GtkTreeView

[Christopher Backhouse <cjbackhouse gmail com>]

I am trying to use resizeable and expandable columns in a treeview.
I have seen http://bugzilla.gnome.org/show_bug.cgi?id=316087 so I 
understand that there is nothing I can really do to get this to work 
properly until the bug is fixed.

One of the comments in the bug, however, says:
"It seems that column expansion is only used to find a good initial 
size.  If expansion is turned off after the columns have been created, 
that should fix the problem"

I have been attempting to follow this clue to create columns that 
initially share all the space between them but from then on merely 
respond to user commands. I tried creating all my columns expandable, 
then disabling the expandability and making them resizeable instead - 
but this leads to zero-width resizeable columns.

Anyone know the correct sequence of actions to get this behaviour?