ScaleButton.connectPopup

gulong connectPopup(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.scale_button.ScaleButton)))
   &&  Parameters!T.length <  2)

Connect to Popup signal.

The ::popup signal is a [keybinding signal][GtkBindingSignal] which gets emitted to popup the scale widget.

The default bindings for this signal are Space, Enter and Return.

Parameters

`callback`	signal callback delegate or function to connect `void callback(gtk.scale_button.ScaleButton scaleButton)` `scaleButton` 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