Widget.connectGrabNotify

gulong connectGrabNotify(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  void)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0]  ==  bool)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1] :  gtk.widget.Widget)))
   &&  Parameters!T.length <  3)

Connect to GrabNotify signal.

The ::grab-notify signal is emitted when a widget becomes shadowed by a GTK+ grab (not a pointer or keyboard grab) on another widget, or when it becomes unshadowed due to a grab being removed.

A widget is shadowed by a [gtk.widget.Widget.grabAdd] when the topmost grab widget in the grab stack of its window group is not its ancestor.

Parameters

`callback`	signal callback delegate or function to connect `void callback(bool wasGrabbed, gtk.widget.Widget widget)` `wasGrabbed` false if the widget becomes shadowed, true if it becomes unshadowed (optional) `widget` the instance the signal is connected to (optional)
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID