---
title: charSizeHorizontalActive
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 13.0+, macOS 10.15+]
path: iokit/iodisplaytimingrangev1/3131305-charsizehorizontalactive
---

# charSizeHorizontalActive

## Declaration

```occ
UInt8 charSizeHorizontalActive;
```