---
title: CMBITMAPCALLBACKPROCPTR_DEFINED
framework: Application Services
role: symbol
role_heading: Global Variable
platforms: [macOS 10.6+]
path: applicationservices/cmbitmapcallbackprocptr_defined
---

# CMBITMAPCALLBACKPROCPTR_DEFINED

## Declaration

```swift
var CMBITMAPCALLBACKPROCPTR_DEFINED: Int32 { get }
```