`sig
val day_selected : ([> `calendar ], unit -> unit) GtkSignal.t
val day_selected_double_click : ([> `calendar ], unit -> unit) GtkSignal.t
val month_changed : ([> `calendar ], unit -> unit) GtkSignal.t
val next_month : ([> `calendar ], unit -> unit) GtkSignal.t
val next_year : ([> `calendar ], unit -> unit) GtkSignal.t
val prev_month : ([> `calendar ], unit -> unit) GtkSignal.t
val prev_year : ([> `calendar ], unit -> unit) GtkSignal.t
end`