Signals.Eventval marshal : ([< Gdk.Tags.event_type ] Gdk.event -> bool) -> Gobject.Closure.argv -> unitval button_press : ([> `oocanvasitem ], GdkEvent.Button.t -> bool) GtkSignal.tval button_release : ([> `oocanvasitem ], GdkEvent.Button.t -> bool) GtkSignal.tval enter_notify : ([> `oocanvasitem ], GdkEvent.Crossing.t -> bool) GtkSignal.tval focus_in : ([> `oocanvasitem ], GdkEvent.Focus.t -> bool) GtkSignal.tval focus_out : ([> `oocanvasitem ], GdkEvent.Focus.t -> bool) GtkSignal.tval key_press : ([> `oocanvasitem ], GdkEvent.Key.t -> bool) GtkSignal.tval key_release : ([> `oocanvasitem ], GdkEvent.Key.t -> bool) GtkSignal.tval leave_notify : ([> `oocanvasitem ], GdkEvent.Crossing.t -> bool) GtkSignal.tval motion_notify : ([> `oocanvasitem ], GdkEvent.Motion.t -> bool) GtkSignal.t