---
title: componentVersion
framework: Core Services
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 17.0+, macOS 10.0+]
path: coreservices/componentresourceextension/1516636-componentversion
---

# componentVersion

The version number of the component. If you specify the componentDoAutoVersion flag in componentRegisterFlags, the Component Manager must obtain the version number of your component when your component is registered. Either you can provide a version number in your component’s resource, or you can specify a value of 0 for its version number. If you specify 0, the Component Manager sends your component a version request to get the version number of your component.

## Declaration

```occ
SInt32 componentVersion;
```