Synopsis

GtkWidget*  popup_menu_button_new           (GtkWidget *child);
GtkWidget*  popup_menu_button_new_from_stock
                                            (const gchar *stock_id);
void        toggle_popup_menu               (GtkWidget *parent_button);
void        popup_menu_close                (GtkWidget *parent_button);
GtkWidget*  popup_menu_button_new_type_font ();
GtkWidget*  popup_menu_button_new_type_color
                                            ();