code: func ClipboardGetForDisplay(display *gdk.Display, atom gdk.Atom) (*Clipboard, error) {
  	displayPtr := (*C.GdkDisplay)(unsafe.Pointer(display.Native()))
  	c := C.gtk_clipboard_get_for_display(displayPtr,
  		C.GdkAtom(unsafe.Pointer(atom)))
  	if c == nil {
  		return nil, nilPtrErr
  	}
  
  	cb := &Clipboard{glib.Take(unsafe.Pointer(c))}
  	return cb, nil
  }
docs: // ClipboardGetForDisplay() is a wrapper around gtk_clipboard_get_for_display().