code: func AddProviderForScreen(s *gdk.Screen, provider IStyleProvider, prio uint) {
  	C.gtk_style_context_add_provider_for_screen((*C.GdkScreen)(unsafe.Pointer(s.Native())), provider.toStyleProvider(), C.guint(prio))
  }
docs: // AddProviderForScreen is a wrapper around gtk_style_context_add_provider_for_screen().