While tinkering with various stuff I found uses for the following,

	* gdk-1.2.defs (GdkFont): Add ascent and descent fields.
	(gdk_window_get_events, gdk_window_at_pointer, gdk_window_get_pointer,
	gdk_window_raise, gdk_window_set_background,
	gdk_window_set_back_pixmap, gdk_window_set_events): New functions.

        * gtk-1.2.defs (GtkTreeItem): Add expanded field
        (GtkMenuItem): Add submenu field.
        (gtk_window_add_accel_group, gtk_window_remove_accel_group,
        gtk_toggle_button_get_active): New functions.

GtkToggleButton has "active" as a field as well as a get_active
function (in both gtk 1.2 and 2.0).  The gtk 2 doco doesn't mention
the field though, so it might be best to use the function.