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CoreFoundation Framework Reference CFBoolean Reference

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CFBoolean Reference

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

Functions

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

    Declaration

    Swift

    func CFBooleanGetTypeID() -> CFTypeID

    Objective-C

    CFTypeID CFBooleanGetTypeID ( void );

    Return Value

    The Core Foundation type identifier for CFBoolean opaque type.

    Import Statement

    Objective-C

    @import CoreFoundation;

    Swift

    import CoreFoundation

    Availability

    Available in iOS 2.0 and later.

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

    Declaration

    Swift

    func CFBooleanGetValue(_ boolean: CFBoolean!) -> Boolean

    Objective-C

    Boolean CFBooleanGetValue ( CFBooleanRef boolean );

    Parameters

    boolean

    The boolean to examine.

    Return Value

    The value of boolean.

    Import Statement

    Objective-C

    @import CoreFoundation;

    Swift

    import CoreFoundation

    Availability

    Available in iOS 2.0 and later.

Data Types

Miscellaneous

  • A reference to a CFBoolean object.

    Declaration

    Swift

    typealias CFBooleanRef = CFBoolean

    Objective-C

    typedef const struct __CFBoolean *CFBooleanRef;

    Discussion

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

    Import Statement

    Objective-C

    @import CoreFoundation;

    Swift

    import CoreFoundation

    Availability

    Available in iOS 2.0 and later.

Constants

Miscellaneous

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

    Declaration

    Swift

    let kCFBooleanTrue: CFBoolean! let kCFBooleanFalse: CFBoolean!

    Objective-C

    const CFBooleanRef kCFBooleanTrue; const CFBooleanRef kCFBooleanFalse;

    Constants

    • kCFBooleanTrue

      kCFBooleanTrue

      Boolean true value.

      Available in iOS 2.0 and later.

    • kCFBooleanFalse

      kCFBooleanFalse

      Boolean false value.

      Available in iOS 2.0 and later.