1) gksu gedit /etc/gtk/gtkrc.ja.utf-8
2) 次の記述を追加する
style "gtk-default-ja-utf8" {
fontset = "-adobe-helvetica-medium-r-normal--14-100-100-100-p-76-iso8859-1,\
-ricoh-ms mincho-medium-r-normal--14-*-*-*-*-*-jisx0208.1983-0,\
-misc-fixed-medium-r-normal--14-*-*-*-*-*-jisx0208.1983-0,\
*-r-*"
}
class "GtkWidget" style "gtk-default-ja-utf8"
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(2007.05.16)