Widget.connectStateChanged

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

Connect to StateChanged signal.

The ::state-changed signal is emitted when the widget state changes. See [gtk.widget.Widget.getState].

Parameters

`callback`	signal callback delegate or function to connect `void callback(gtk.types.StateType state, gtk.widget.Widget widget)` `state` the previous state (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

Deprecated

Use #GtkWidget::state-flags-changed instead.