---

CFBoolean Reference

Overview

CFBoolean objects are used to wrap boolean values for use in Core Foundation property lists and collection types.

Functions

CFBooleanGetTypeID

Returns the Core Foundation type identifier for the CFBoolean opaque type.

CFTypeID CFBooleanGetTypeID (
   void
);

Return Value

The Core Foundation type identifier for CFBoolean opaque type.

Availability

• Available in CarbonLib v1.0 and later.
• Available in Mac OS X v10.0 and later.

Related Sample Code

• Cocoa PDE with Carbon Printing
• DRDataBurnCarbonUI
• DREraseCarbonUI
• HID Manager Basics
• QISA

Declared In

CFNumber.h

CFBooleanGetValue

Returns the value of a CFBoolean object as a standard C type Boolean.

Boolean CFBooleanGetValue (
   CFBooleanRef boolean
);

Parameters

boolean

The boolean to examine.

Return Value

The value of boolean.

Availability

• Available in CarbonLib v1.0 and later.
• Available in Mac OS X v10.0 and later.

Related Sample Code

• databurntest
• GLCarbon1ContextPbuffer
• GLCarbonSharedPbuffer
• HID Utilities Source
• SeeMyFriends

Declared In

CFNumber.h

Data Types

CFBooleanRef

A reference to a CFBoolean object.

typedef const struct __CFBoolean *CFBooleanRef;

Discussion

CFBoolean objects are used to wrap boolean values for use in Core Foundation property lists and collection types.

Availability

• Available in Mac OS X v10.0 and later.

Declared In

CFNumber.h

Constants

Boolean Values

CFBoolean evaluates to either true or false values where kCFBooleanTrue is the true, and kCFBooleanFalse is the false value.

const CFBooleanRef kCFBooleanTrue;
const CFBooleanRef kCFBooleanFalse;

Constants

kCFBooleanTrue

Boolean true value.

Available in Mac OS X v10.0 and later.

Declared in CFNumber.h.

kCFBooleanFalse

Boolean false value.

Available in Mac OS X v10.0 and later.

Declared in CFNumber.h.

---