---
title: leftStereoDisplayMaskRectangle
framework: corevideo
role: symbol
role_heading: Type Property
path: corevideo/cvimagebufferattachmentkeydefinitions/leftstereodisplaymaskrectangle
---

# leftStereoDisplayMaskRectangle

Specifies the rectangular display area within the left eye view of stereo images.

## Declaration

```swift
static var leftStereoDisplayMaskRectangle: CVAttachmentKeyDefinition<Self.ShouldPropagate, CVImageStereoDisplayMaskRectangle> { get }
```