# ZIndexMode

## Overview

ZIndexMode is an Enum that specifies the ZIndex calculation method for SurfaceGuiBase.

It is used as the ZIndexBehavior property in the SurfaceGuiBase class, determining whether ZIndex is calculated as a relative order among sibling elements or calculated globally.

## Items

| Name    | Value | Description                                                                                 |
| ------- | ----- | ------------------------------------------------------------------------------------------- |
| Sibling | 0     | ZIndex is calculated as a relative order among sibling elements that share the same parent. |
| Global  | 1     | ZIndex is calculated globally, determining the order among all SurfaceGuiBase elements.     |

## See also

{% content-ref url="../classes/surfaceguibase" %}
[surfaceguibase](https://docs.overdare.com/development/api-reference/classes/surfaceguibase)
{% endcontent-ref %}