Tian wrote:
So I tried to use a TreeStore instead of a ListStore as the model for ComboBox. And it works as expected. The problem is that in the sub-menus, there is a title that is the name of the group.
Judging from the gtk+ sources (gtkcombobox.c, gtk_combo_box_menu_fill_level), I don't think it's possible to alter the way these menus are built and displayed. If you want this changed, bugzilla.gnome.org is the place.
-- -Torsten