gtk-sharp 2.12.0.0 GLib.SignalArgs Constructor Public Constructor. Create a new instance with this constructor if you need to invoke a delegate. Property Gtk.PrintOperationPreview The Print Preview operation. A . Property Gtk.PrintContext The Print Context for the preview operation. A . Property Gtk.Window The Parent widget for the Preview display. A , or . Event data. The event invokes delegates which pass event data via this class.