---
title: CFNullGetTypeID()
framework: corefoundation
role: symbol
role_heading: Function
path: corefoundation/cfnullgettypeid()
---

# CFNullGetTypeID()

Returns the type identifier for the CFNull opaque type.

## Declaration

```swift
func CFNullGetTypeID() -> CFTypeID
```

## Return Value

Return Value The type identifier for the CFNull opaque type.