StyleContext.connectChanged

gulong connectChanged(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.style_context.StyleContext)))
   &&  Parameters!T.length <  2)

Connect to Changed signal.

The ::changed signal is emitted when there is a change in the #GtkStyleContext.

For a #GtkStyleContext returned by [gtk.widget.Widget.getStyleContext], the #GtkWidget::style-updated signal/vfunc might be more convenient to use.

This signal is useful when using the theming layer standalone.

Parameters

`callback`	signal callback delegate or function to connect `void callback(gtk.style_context.StyleContext styleContext)` `styleContext` 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