---
title: "init(userCallback:userRefCon:internalRefCon:asyncIDRefCon:reserved:)"
framework: iobluetooth
role: symbol
role_heading: Initializer
path: "iobluetooth/bluetoothhcirequestcallbackinfo/init(usercallback:userrefcon:internalrefcon:asyncidrefcon:reserved:)"
---

# init(userCallback:userRefCon:internalRefCon:asyncIDRefCon:reserved:)

## Declaration

```swift
init(userCallback: mach_vm_address_t, userRefCon: mach_vm_address_t, internalRefCon: mach_vm_address_t, asyncIDRefCon: mach_vm_address_t, reserved: mach_vm_address_t)
```