in reply to Formatting Gtk Pages
OK, my Perl skills are all non-UI, but back in the dark days I programmed in a Very Basic language that was just about all UI.
The solution there would be to hook the click event on the checkboxes, and then fiddle the background color of all of the fields on that row. Viola, you've highlighted the selection.
I'm pretty sure the same method would work in Tk, too.
Spring: Forces, Coiled Again!