code: func ScrolledWindowNew(hadjustment, vadjustment *Adjustment) (*ScrolledWindow, error) {
  	c := C.gtk_scrolled_window_new(hadjustment.native(),
  		vadjustment.native())
  	if c == nil {
  		return nil, nilPtrErr
  	}
  	return wrapScrolledWindow(glib.Take(unsafe.Pointer(c))), nil
  }
docs: // ScrolledWindowNew() is a wrapper around gtk_scrolled_window_new().