---
title: CreateInterfaceAsyncEventSource
framework: IOKit
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 18.4+, macOS 10.14+]
path: iokit/iousbinterfaceinterface942/2977195-createinterfaceasynceventsource
---

# CreateInterfaceAsyncEventSource

## Declaration

```occ
IOReturn (*CreateInterfaceAsyncEventSource)(void *self, CFRunLoopSourceRef *source);
```