I'm doing that because, as far as I can remember, it's really not GTK
convention (not that it couldn't be done) to add accelerators to every
widget on the dialog. Arrow keys let users navigate around them.
Menus receive direct acclerators (which I implemented), like GNOME
applications and some other GTK applications that have done similar.
All this convention might have changed in the GTK 1.2 series, but sometime
near 1.0 I don't ever remember being able to add accelerator tags
(underlined text) to labels/togglebuttons/etc.
-- Shaw Terwilliger