EventControllerScroll.connectScroll

gulong connectScroll(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  bool)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0]  ==  double)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1]  ==  double)))
   && (Parameters!T.length <  3 || (ParameterStorageClassTuple!T[2]  ==  ParameterStorageClass.none &&  is(Parameters!T[2] :  gtk.event_controller_scroll.EventControllerScroll)))
   &&  Parameters!T.length <  4)

Connect to Scroll signal.

Signals that the widget should scroll by the amount specified by dx and dy.

For the representation unit of the deltas, see [gtk.event_controller_scroll.EventControllerScroll.getUnit].

Parameters

`callback`	signal callback delegate or function to connect `bool callback(double dx, double dy, gtk.event_controller_scroll.EventControllerScroll eventControllerScroll)` `dx` X delta (optional) `dy` Y delta (optional) `eventControllerScroll` the instance the signal is connected to (optional) `Returns` true if the scroll event was handled, false otherwise.
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID