Widget.connectFocus

gulong connectFocus(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]  ==  gtk.types.DirectionType)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1] :  gtk.widget.Widget)))
   &&  Parameters!T.length <  3)

Connect to Focus signal.

Parameters

`callback`	signal callback delegate or function to connect `bool callback(gtk.types.DirectionType direction, gtk.widget.Widget widget)` `direction` (optional) `widget` the instance the signal is connected to (optional) `Returns` true to stop other handlers from being invoked for the event. false to propagate the event further.
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID