val virtual obj : [> `filechooserbutton ] Gobject.obj
method set_title : < set_title : string -> unit; set_width_chars : int -> unit; title : string; width_chars : int; .. > -> string -> unitmethod set_width_chars : < set_title : string -> unit; set_width_chars : int -> unit; title : string; width_chars : int; .. > -> int -> unitmethod title : < set_title : string -> unit; set_width_chars : int -> unit; title : string; width_chars : int; .. > -> stringmethod width_chars : < set_title : string -> unit; set_width_chars : int -> unit; title : string; width_chars : int; .. > -> int