---
title: "setXPCType(_:for:argumentIndex:ofReply:)"
framework: foundation
role: symbol
role_heading: Instance Method
path: "foundation/nsxpcinterface/setxpctype(_:for:argumentindex:ofreply:)"
---

# setXPCType(_:for:argumentIndex:ofReply:)

## Declaration

```swift
func setXPCType(_ type: xpc_type_t, for sel: Selector, argumentIndex arg: Int, ofReply: Bool)
```