---
title: kIOVideoDeviceNotificationID_ControlValueChanged
framework: Kernel
role: symbol
role_heading: Enumeration Case
platforms: [macOS 10.12+]
path: kernel/1646201-anonymous/kiovideodevicenotificationid_controlvaluechanged
---

# kIOVideoDeviceNotificationID_ControlValueChanged

## Declaration

```occ
kIOVideoDeviceNotificationID_ControlValueChanged = 'cval'
```

## Discussion

Discussion Indicates that the value of the control with the given ID has changed. The first argument is the new value.