func (v *Display) IsClosed() bool {
	c := C.gdk_display_is_closed(v.native())
	return gobool(c)
}
func (v *Display) IsClosed() bool {
	c := C.gdk_display_is_closed(v.native())
	return gobool(c)
}
// IsClosed() is a wrapper around gdk_display_is_closed().