Package com.sun.jna.platform.mac

# Interface CoreFoundation

All Superinterfaces:
  `Library`

public interface CoreFoundation extends Library
Core Foundation is a framework that provides fundamental software services useful to application services, application environments, and to applications themselves. Core Foundation also provides abstractions for common data types.

Core Foundation functions have names that indicate when you own a returned object: Object-creation functions have “Create” embedded in the name, and Object-duplication functions that have “Copy” embedded in the name. If you own an object, it is your responsibility to relinquish ownership (using `CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)`) when you have finished with it.

If you receive an object from any Core Foundation function other than a creation or copy function—such as a Get function—you do not own it and cannot be certain of the object’s life span. If you want to ensure that such an object is not disposed of while you are using it, you must claim ownership (with the `CFRetain(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)` function).

## Nested Class Summary

Nested Classes
Modifier and Type
Interface
Description
`static class`
`CoreFoundation.CFAllocatorRef`
A reference type used in many Core Foundation parameters and function results.
`static class`
`CoreFoundation.CFArrayRef`
A reference to an immutable `CFArray` object.
`static class`
`CoreFoundation.CFBooleanRef`
A reference to a `CFBoolean` object.
`static class`
`CoreFoundation.CFDataRef`
A reference to an immutable `CFData` object.
`static class`
`CoreFoundation.CFDictionaryRef`
A reference to an immutable `CFDictionary` object.
`static class`
`CoreFoundation.CFIndex`
A wrapper for the `NativeLong` type, used for `CoreFoundation.CFNumberRef` types, `CoreFoundation.CFStringRef` lengths, and `CoreFoundation.CFArrayRef` sizes and indices.
`static class`
`CoreFoundation.CFMutableDictionaryRef`
A reference to a mutable `CFDictionary` object.
`static class`
`CoreFoundation.CFNumberRef`
A reference to a `CFNumber` object.
`static enum`
`CoreFoundation.CFNumberType`
Enum of values used for `CoreFoundation.CFNumberType` in `CFNumberGetValue(com.sun.jna.platform.mac.CoreFoundation.CFNumberRef, com.sun.jna.platform.mac.CoreFoundation.CFIndex, com.sun.jna.ptr.ByReference)` and `CFNumberGetType(com.sun.jna.platform.mac.CoreFoundation.CFNumberRef)`.
`static class`
`CoreFoundation.CFStringRef`
A reference to a `CFString` object, which “encapsulates” a Unicode string along with its length.
`static class`
`CoreFoundation.CFTypeID`
A type for unique, constant integer values that identify particular Core Foundation opaque types.
`static class`
`CoreFoundation.CFTypeRef`
The `CFTypeRef` type is the base type defined in Core Foundation.

## Nested classes/interfaces inherited from interface com.sun.jna.Library

`Library.Handler`

## Field Summary

Fields
Modifier and Type
Field
Description
`static final CoreFoundation.CFTypeID`
`ARRAY_TYPE_ID`
`static final CoreFoundation.CFTypeID`
`BOOLEAN_TYPE_ID`
`static final CoreFoundation.CFTypeID`
`DATA_TYPE_ID`
`static final CoreFoundation.CFTypeID`
`DATE_TYPE_ID`
`static final CoreFoundation.CFTypeID`
`DICTIONARY_TYPE_ID`
`static final CoreFoundation`
`INSTANCE`
`static final int`
`kCFNotFound`
`static final int`
`kCFStringEncodingASCII`
`static final int`
`kCFStringEncodingUTF8`
`static final CoreFoundation.CFTypeID`
`NUMBER_TYPE_ID`
`static final CoreFoundation.CFTypeID`
`STRING_TYPE_ID`

### Fields inherited from interface com.sun.jna.Library

`OPTION_ALLOW_OBJECTS, OPTION_CALLING_CONVENTION, OPTION_CLASSLOADER, OPTION_FUNCTION_MAPPER, OPTION_INVOCATION_MAPPER, OPTION_OPEN_FLAGS, OPTION_STRING_ENCODING, OPTION_STRUCTURE_ALIGNMENT, OPTION_SYMBOL_PROVIDER, OPTION_TYPE_MAPPER`

## Method Summary

Modifier and Type
Method
Description
`CoreFoundation.CFAllocatorRef`
`CFAllocatorGetDefault()`
Gets the default allocator object for the current thread.
`CoreFoundation.CFArrayRef`
`CFArrayCreate(CoreFoundation.CFAllocatorRef alloc, Pointer values, CoreFoundation.CFIndex numValues, Pointer callBacks)`
Creates a new immutable array with the given values.
`CoreFoundation.CFIndex`
`CFArrayGetCount(CoreFoundation.CFArrayRef theArray)`
Returns the number of values currently in an array.
`CoreFoundation.CFTypeID`
`CFArrayGetTypeID()`
`Pointer`
`CFArrayGetValueAtIndex(CoreFoundation.CFArrayRef theArray, CoreFoundation.CFIndex idx)`
Retrieves a value at a given index.
`CoreFoundation.CFTypeID`
`CFBooleanGetTypeID()`
`byte`
`CFBooleanGetValue(CoreFoundation.CFBooleanRef bool)`
Returns the value of a `CFBoolean` object.
`CoreFoundation.CFStringRef`
`CFCopyDescription(CoreFoundation.CFTypeRef cf)`
Returns a textual description of a Core Foundation object.
`CoreFoundation.CFDataRef`
`CFDataCreate(CoreFoundation.CFAllocatorRef alloc, Pointer bytes, CoreFoundation.CFIndex length)`
Creates an immutable `CFData` object using data copied from a specified byte buffer.
`Pointer`
`CFDataGetBytePtr(CoreFoundation.CFDataRef theData)`
Returns a read-only pointer to the bytes of a `CFData` object.
`CoreFoundation.CFIndex`
`CFDataGetLength(CoreFoundation.CFDataRef theData)`
Returns the number of bytes contained by a `CFData` object.
`CoreFoundation.CFTypeID`
`CFDataGetTypeID()`
`CoreFoundation.CFTypeID`
`CFDateGetTypeID()`
`CoreFoundation.CFMutableDictionaryRef`
`CFDictionaryCreateMutable(CoreFoundation.CFAllocatorRef alloc, CoreFoundation.CFIndex capacity, Pointer keyCallBacks, Pointer valueCallBacks)`
Creates a new mutable dictionary.
`CoreFoundation.CFIndex`
`CFDictionaryGetCount(CoreFoundation.CFDictionaryRef theDict)`
Returns the number of key-value pairs in a dictionary.
`CoreFoundation.CFTypeID`
`CFDictionaryGetTypeID()`
`Pointer`
`CFDictionaryGetValue(CoreFoundation.CFDictionaryRef theDict, PointerType key)`
Returns the value associated with a given key.
`byte`
`CFDictionaryGetValueIfPresent(CoreFoundation.CFDictionaryRef theDict, PointerType key, PointerByReference value)`
Returns a boolean value that indicates whether a given value for a given key is in a dictionary, and returns that value indirectly if it exists.
`void`
`CFDictionarySetValue(CoreFoundation.CFMutableDictionaryRef theDict, PointerType key, PointerType value)`
Sets the value corresponding to a given key.
`boolean`
`CFEqual(CoreFoundation.CFTypeRef cf1, CoreFoundation.CFTypeRef cf2)`
Determines whether two Core Foundation objects are considered equal.
`CoreFoundation.CFIndex`
`CFGetRetainCount(CoreFoundation.CFTypeRef cf)`
Returns the reference count of a Core Foundation object.
`CoreFoundation.CFTypeID`
`CFGetTypeID(CoreFoundation.CFTypeRef theObject)`
Returns the type of a `CFType` object.
`CoreFoundation.CFTypeID`
`CFGetTypeID(Pointer theObject)`
Returns the type of a `CFType` object presented as a pointer.
`CoreFoundation.CFNumberRef`
`CFNumberCreate(CoreFoundation.CFAllocatorRef alloc, CoreFoundation.CFIndex theType, ByReference valuePtr)`
Creates a `CFNumber` object using a specified value.
`CoreFoundation.CFIndex`
`CFNumberGetType(CoreFoundation.CFNumberRef number)`
Returns the type used by a `CFNumber` object to store its value.
`CoreFoundation.CFTypeID`
`CFNumberGetTypeID()`
`byte`
`CFNumberGetValue(CoreFoundation.CFNumberRef number, CoreFoundation.CFIndex theType, ByReference valuePtr)`
Obtains the value of a `CFNumber` object cast to a specified type.
`void`
`CFRelease(CoreFoundation.CFTypeRef cf)`
Releases a Core Foundation object.
`CoreFoundation.CFTypeRef`
`CFRetain(CoreFoundation.CFTypeRef cf)`
Retains a Core Foundation object.
`CoreFoundation.CFStringRef`
`CFStringCreateWithCharacters(CoreFoundation.CFAllocatorRef alloc, char[] chars, CoreFoundation.CFIndex length)`
Creates a string from a buffer of Unicode characters.
`byte`
`CFStringGetCString(CoreFoundation.CFStringRef theString, Pointer bufferToFill, CoreFoundation.CFIndex bufferSize, int encoding)`
Copies the character contents of a string to a local C string buffer after converting the characters to a given encoding.
`CoreFoundation.CFIndex`
`CFStringGetLength(CoreFoundation.CFStringRef theString)`
Returns the number (in terms of UTF-16 code pairs) of Unicode characters in a string.
`CoreFoundation.CFIndex`
`CFStringGetMaximumSizeForEncoding(CoreFoundation.CFIndex length, int encoding)`
Returns the maximum number of bytes a string of a specified length (in Unicode characters) will take up if encoded in a specified encoding.
`CoreFoundation.CFTypeID`
`CFStringGetTypeID()`

## Field Details

### INSTANCE

static final CoreFoundation INSTANCE

### kCFNotFound

static final int kCFNotFound

See Also:
  - Constant Field Values

### kCFStringEncodingASCII

static final int kCFStringEncodingASCII

See Also:
  - Constant Field Values

### kCFStringEncodingUTF8

static final int kCFStringEncodingUTF8

See Also:
  - Constant Field Values

### ARRAY_TYPE_ID

static final CoreFoundation.CFTypeID ARRAY_TYPE_ID

### BOOLEAN_TYPE_ID

static final CoreFoundation.CFTypeID BOOLEAN_TYPE_ID

### DATA_TYPE_ID

static final CoreFoundation.CFTypeID DATA_TYPE_ID

### DATE_TYPE_ID

static final CoreFoundation.CFTypeID DATE_TYPE_ID

### DICTIONARY_TYPE_ID

static final CoreFoundation.CFTypeID DICTIONARY_TYPE_ID

### NUMBER_TYPE_ID

static final CoreFoundation.CFTypeID NUMBER_TYPE_ID

### STRING_TYPE_ID

static final CoreFoundation.CFTypeID STRING_TYPE_ID

## Method Details

### CFStringCreateWithCharacters

CoreFoundation.CFStringRef CFStringCreateWithCharacters(CoreFoundation.CFAllocatorRef alloc, char[] chars, CoreFoundation.CFIndex length)
Creates a string from a buffer of Unicode characters.

This reference must be released with `CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)` to avoid leaking references.

Parameters:
  `alloc` - The allocator to use to allocate memory for the new string. Pass `null` or `kCFAllocatorDefault` to use the current default allocator.
  `chars` - The buffer of Unicode characters to copy into the new string.
  `length` - The number of characters in the buffer pointed to by chars. Only this number of characters will be copied to internal storage.
Returns:
  An immutable string containing `chars`, or `null` if there was a problem creating the object.

### CFNumberCreate

CoreFoundation.CFNumberRef CFNumberCreate(CoreFoundation.CFAllocatorRef alloc, CoreFoundation.CFIndex theType, ByReference valuePtr)
Creates a `CFNumber` object using a specified value.

This reference must be released with `CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)` to avoid leaking references.

Parameters:
  `alloc` - The allocator to use to allocate memory for the new object. Pass `null` or `kCFAllocatorDefault` to use the current default allocator.
  `theType` - A constant that specifies the data type of the value to convert. The ordinal value of the enum.

  The `theType` parameter is not necessarily preserved when creating a new `CFNumber` object. The `CFNumber` object will be created using whatever internal storage type the creation function deems appropriate. Use the function `CFNumberGetType(com.sun.jna.platform.mac.CoreFoundation.CFNumberRef)` to find out what type the `CFNumber` object used to store your value.

  `valuePtr` - A pointer to the value for the returned number object.
Returns:
  A new number with the value specified by `valuePtr`.

### CFArrayCreate

CoreFoundation.CFArrayRef CFArrayCreate(CoreFoundation.CFAllocatorRef alloc, Pointer values, CoreFoundation.CFIndex numValues, Pointer callBacks)
Creates a new immutable array with the given values.

This reference must be released with `CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)` to avoid leaking references.

Parameters:
  `alloc` - The allocator to use to allocate memory for the new array and its storage for values. Pass `null` or `kCFAllocatorDefault` to use the current default allocator.
  `values` - A C array of the pointer-sized values to be in the new array. The values in the new array are ordered in the same order in which they appear in this C array. This value may be `null` if `numValues` is 0. This C array is not changed or freed by this function. If `values` is not a valid pointer to a C array of at least `numValues` elements, the behavior is undefined.
  `numValues` - The number of values to copy from the `values` C array into the new array. This number will be the count of the new array—it must not be negative or greater than the number of elements in values.
  `callBacks` - A pointer to a `CFArrayCallBacks` structure initialized with the callbacks for the array to use on each value in the collection. The retain callback is used within this function, for example, to retain all of the new values from the `values` C array. A copy of the contents of the callbacks structure is made, so that a pointer to a structure on the stack can be passed in or can be reused for multiple collection creations.

  This value may be `null`, which is treated as if a valid structure of version 0 with all fields `null` had been passed in.

Returns:
  A new immutable array containing `numValues` from `values`, or `null` if there was a problem creating the object.

### CFDataCreate

CoreFoundation.CFDataRef CFDataCreate(CoreFoundation.CFAllocatorRef alloc, Pointer bytes, CoreFoundation.CFIndex length)
Creates an immutable `CFData` object using data copied from a specified byte buffer.

This reference must be released with `CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)` to avoid leaking references.

Parameters:
  `alloc` - The allocator to use to allocate memory for the new object. Pass `null` or `kCFAllocatorDefault` to use the current default allocator.
  `bytes` - A pointer to the byte buffer that contains the raw data to be copied into the Data.
  `length` - The number of bytes in the buffer (`bytes`).
Returns:
  A new `CFData` object, or `null` if there was a problem creating the object.

### CFDictionaryCreateMutable

CoreFoundation.CFMutableDictionaryRef CFDictionaryCreateMutable(CoreFoundation.CFAllocatorRef alloc, CoreFoundation.CFIndex capacity, Pointer keyCallBacks, Pointer valueCallBacks)
Creates a new mutable dictionary.

This reference must be released with `CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)` to avoid leaking references.

Parameters:
  `alloc` - The allocator to use to allocate memory for the new string. Pass `null` or `kCFAllocatorDefault` to use the current default allocator.
  `capacity` - The maximum number of key-value pairs that can be contained by the new dictionary. The dictionary starts empty and can grow to this number of key-value pairs (and it can have less).

  Pass 0 to specify that the maximum capacity is not limited. The value must not be negative.

  `keyCallBacks` - A pointer to a `CFDictionaryKeyCallBacks` structure initialized with the callbacks to use to retain, release, describe, and compare keys in the dictionary. A copy of the contents of the callbacks structure is made, so that a pointer to a structure on the stack can be passed in or can be reused for multiple collection creations.

  This value may be `null`, which is treated as a valid structure of version 0 with all fields `null`.

  `valueCallBacks` - A pointer to a `CFDictionaryValueCallBacks` structure initialized with the callbacks to use to retain, release, describe, and compare values in the dictionary. A copy of the contents of the callbacks structure is made, so that a pointer to a structure on the stack can be passed in or can be reused for multiple collection creations.

  This value may be `null`, which is treated as a valid structure of version 0 with all fields `null`.

Returns:
  A new dictionary, or `null` if there was a problem creating the object.

### CFCopyDescription

CoreFoundation.CFStringRef CFCopyDescription(CoreFoundation.CFTypeRef cf)
Returns a textual description of a Core Foundation object.

The nature of the description differs by object. For example, a description of a CFArray object would include descriptions of each of the elements in the collection.

You can use this function for debugging Core Foundation objects in your code. Note, however, that the description for a given object may be different in different releases of the operating system. Do not create dependencies in your code on the content or format of the information returned by this function.

Parameters:
  `cf` - The `CFType` object (a generic reference of type `CFTypeRef`) from which to derive a description.
Returns:
  A string that contains a description of `cf`.

### CFRelease

void CFRelease(CoreFoundation.CFTypeRef cf)
Releases a Core Foundation object.

If the retain count of `cf` becomes zero the memory allocated to the object is deallocated and the object is destroyed. If you create, copy, or explicitly retain (see the `CFRetain(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)` function) a Core Foundation object, you are responsible for releasing it when you no longer need it.

Parameters:
  `cf` - A `CFType` object to release. This value must not be `null`.

### CFRetain

CoreFoundation.CFTypeRef CFRetain(CoreFoundation.CFTypeRef cf)
Retains a Core Foundation object. You should retain a Core Foundation object when you receive it from elsewhere (that is, you did not create or copy it) and you want it to persist.

If you retain a Core Foundation object you are responsible for releasing it with `CFRelease(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)`.

Parameters:
  `cf` - The `CFType` object to retain. This value must not be `null`.
Returns:
  The input value, {code cf}.

### CFGetRetainCount

CoreFoundation.CFIndex CFGetRetainCount(CoreFoundation.CFTypeRef cf)
Returns the reference count of a Core Foundation object.

Parameters:
  `cf` - The `CFType` object to examine.
Returns:
  A number representing the reference count of {code cf}.

### CFDictionaryGetCount

CoreFoundation.CFIndex CFDictionaryGetCount(CoreFoundation.CFDictionaryRef theDict)
Returns the number of key-value pairs in a dictionary.

Parameters:
  `theDict` - The dictionary to examine.
Returns:
  The number of key-value pairs in theDict.

### CFDictionaryGetValue

Pointer CFDictionaryGetValue(CoreFoundation.CFDictionaryRef theDict, PointerType key)
Returns the value associated with a given key.

Parameters:
  `theDict` - The dictionary to examine.
  `key` - The key for which to find a match in `theDict`. The key hash and equal callbacks provided when the dictionary was created are used to compare. If the hash callback was `null`, the key is treated as a pointer and converted to an integer. If the equal callback was `null`, pointer equality (in C, ==) is used. If `key`, or any of the keys in `theDict`, is not understood by the equal callback, the behavior is undefined.
Returns:
  The value associated with key in `theDict`, or `null` if no key-value pair matching key exists. Since `null` is also a valid value in some dictionaries, use `CFDictionaryGetValueIfPresent(com.sun.jna.platform.mac.CoreFoundation.CFDictionaryRef, com.sun.jna.PointerType, com.sun.jna.ptr.PointerByReference)` to distinguish between a value that is not found, and a `null` value.

### CFDictionaryGetValueIfPresent

byte CFDictionaryGetValueIfPresent(CoreFoundation.CFDictionaryRef theDict, PointerType key, PointerByReference value)
Returns a boolean value that indicates whether a given value for a given key is in a dictionary, and returns that value indirectly if it exists.

Parameters:
  `theDict` - The dictionary to examine.
  `key` - The key for which to find a match in `theDict`. The key hash and equal callbacks provided when the dictionary was created are used to compare. If the hash callback was `null`, the key is treated as a pointer and converted to an integer. If the equal callback was `null`, pointer equality (in C, ==) is used. If `key`, or any of the keys in `theDict`, is not understood by the equal callback, the behavior is undefined.
  `value` - A pointer to memory which, on return, is filled with the pointer-sized value if a matching key is found. If no key match is found, the contents of the storage pointed to by this parameter are undefined. This value may be `null`, in which case the value from the dictionary is not returned (but the return value of this function still indicates whether or not the key-value pair was present).
Returns:
  1 if a matching key was found, otherwise 0.

### CFDictionarySetValue

void CFDictionarySetValue(CoreFoundation.CFMutableDictionaryRef theDict, PointerType key, PointerType value)
Sets the value corresponding to a given key.

Parameters:
  `theDict` - The dictionary to modify. If this parameter is a fixed-capacity dictionary and it is full before this operation, and the key does not exist in the dictionary, the behavior is undefined.
  `key` - The key of the value to set in `theDict`. If a key which matches `key` is already present in the dictionary, only the value for the key is changed ("add if absent, replace if present"). If no key matches `key`, the key-value pair is added to the dictionary.

  If a key-value pair is added, both key and value are retained by the dictionary, using the retain callback provided when `theDict` was created. `key` must be of the type expected by the key retain callback.

  `value` - The value to add to or replace in `theDict`. `value` is retained using the value retain callback provided when `theDict` was created, and the previous value if any is released. `value` must be of the type expected by the retain and release callbacks.

### CFStringGetCString

byte CFStringGetCString(CoreFoundation.CFStringRef theString, Pointer bufferToFill, CoreFoundation.CFIndex bufferSize, int encoding)
Copies the character contents of a string to a local C string buffer after converting the characters to a given encoding.

Parameters:
  `theString` - The string whose contents you wish to access.
  `bufferToFill` - The C string buffer into which to copy the string. On return, the buffer contains the converted characters. If there is an error in conversion, the buffer contains only partial results.

  The buffer must be large enough to contain the converted characters and a NUL terminator.

  `bufferSize` - The length of `buffer` in bytes.
  `encoding` - The string encoding to which the character contents of `theString` should be converted. The encoding must specify an 8-bit encoding.
Returns:
  1 upon success or 0 if the conversion fails or the provided buffer is too small.

### CFBooleanGetValue

byte CFBooleanGetValue(CoreFoundation.CFBooleanRef bool)
Returns the value of a `CFBoolean` object.

Parameters:
  `bool` - The boolean to examine.
Returns:
  1 if the value of `bool` is `true`, 0 otherwise.

### CFArrayGetCount

CoreFoundation.CFIndex CFArrayGetCount(CoreFoundation.CFArrayRef theArray)
Returns the number of values currently in an array.

Parameters:
  `theArray` - a `CoreFoundation.CFArrayRef` object.
Returns:
  The number of values in `array`.

### CFArrayGetValueAtIndex

Pointer CFArrayGetValueAtIndex(CoreFoundation.CFArrayRef theArray, CoreFoundation.CFIndex idx)
Retrieves a value at a given index.

Parameters:
  `theArray` - The array to examine.
  `idx` - The index of the value to retrieve. If the index is outside the index space of `theArray` (0 to N-1 inclusive (where N is the count of `theArray`)), the behavior is undefined.
Returns:
  The value at the `idx` index in `theArray`).

### CFNumberGetType

CoreFoundation.CFIndex CFNumberGetType(CoreFoundation.CFNumberRef number)
Returns the type used by a `CFNumber` object to store its value.

Parameters:
  `number` - The `CFNumber` object to examine.
Returns:
  A constant that indicates the data type of the value contained in number. See `CoreFoundation.CFNumberType` for a list of possible values.

### CFNumberGetValue

byte CFNumberGetValue(CoreFoundation.CFNumberRef number, CoreFoundation.CFIndex theType, ByReference valuePtr)
Obtains the value of a `CFNumber` object cast to a specified type.

Parameters:
  `number` - The `CFNumber` object to examine.
  `theType` - A constant that specifies the data type to return. See `CoreFoundation.CFNumberType` for a list of possible values.
  `valuePtr` - On return, contains the value of `number`.
Returns:
  1 if the operation was successful, otherwise 0.

### CFStringGetLength

CoreFoundation.CFIndex CFStringGetLength(CoreFoundation.CFStringRef theString)
Returns the number (in terms of UTF-16 code pairs) of Unicode characters in a string.

Parameters:
  `theString` - The string to examine.
Returns:
  The number (in terms of UTF-16 code pairs) of characters stored in `theString`.

### CFStringGetMaximumSizeForEncoding

CoreFoundation.CFIndex CFStringGetMaximumSizeForEncoding(CoreFoundation.CFIndex length, int encoding)
Returns the maximum number of bytes a string of a specified length (in Unicode characters) will take up if encoded in a specified encoding.

Parameters:
  `length` - The number of Unicode characters to evaluate.
  `encoding` - The string encoding for the number of characters specified by length.
Returns:
  The maximum number of bytes that could be needed to represent length number of Unicode characters with the string encoding encoding, or `kCFNotFound` if the number exceeds `Long.MAX_VALUE`.

### CFEqual

boolean CFEqual(CoreFoundation.CFTypeRef cf1, CoreFoundation.CFTypeRef cf2)
Determines whether two Core Foundation objects are considered equal.

Parameters:
  `cf1` - A CFType object to compare to cf2.
  `cf2` - A CFType object to compare to cf1.
Returns:
  true if cf1 and cf2 are of the same type and considered equal, otherwise false.

### CFAllocatorGetDefault

CoreFoundation.CFAllocatorRef CFAllocatorGetDefault()
Gets the default allocator object for the current thread.

Returns:
  A reference to the default allocator for the current thread. If none has been explicitly set, returns the generic system allocator.

  The default allocator can never be released, so it is not necessary to `CFRetain(com.sun.jna.platform.mac.CoreFoundation.CFTypeRef)` this reference.

### CFDataGetLength

CoreFoundation.CFIndex CFDataGetLength(CoreFoundation.CFDataRef theData)
Returns the number of bytes contained by a `CFData` object.

Parameters:
  `theData` - The `CFData` object to examine.
Returns:
  An index that specifies the number of bytes in `theData`.

### CFDataGetBytePtr

Pointer CFDataGetBytePtr(CoreFoundation.CFDataRef theData)
Returns a read-only pointer to the bytes of a `CFData` object.

Parameters:
  `theData` - The `CFData` object to examine.
Returns:
  A read-only pointer to the bytes associated with `theData`.

### CFGetTypeID

CoreFoundation.CFTypeID CFGetTypeID(CoreFoundation.CFTypeRef theObject)
Returns the type of a `CFType` object.

Parameters:
  `theObject` - The `CFData` object to examine.
Returns:
  A value of type `CoreFoundation.CFTypeID` that identifies the opaque type of `cf`.

### CFGetTypeID

CoreFoundation.CFTypeID CFGetTypeID(Pointer theObject)
Returns the type of a `CFType` object presented as a pointer. Allows to inspect object type without creating a `CoreFoundation.CFTypeRef` wrapper.

Parameters:
  `theObject` - The pointer to `CFData` object to examine.
Returns:
  A value of type `CoreFoundation.CFTypeID` that identifies the opaque type of `cf`.

### CFArrayGetTypeID

CoreFoundation.CFTypeID CFArrayGetTypeID()

Returns:
  The type identifier for the `CFArray` opaque type.

### CFBooleanGetTypeID

CoreFoundation.CFTypeID CFBooleanGetTypeID()

Returns:
  The type identifier for the `CFBoolean` opaque type.

### CFDateGetTypeID

CoreFoundation.CFTypeID CFDateGetTypeID()

Returns:
  The type identifier for the `CFDate` opaque type.

### CFDataGetTypeID

CoreFoundation.CFTypeID CFDataGetTypeID()

Returns:
  The type identifier for the `CFData` opaque type.

  `CFMutableData` objects have the same type identifier as `CFData` objects.

### CFDictionaryGetTypeID

CoreFoundation.CFTypeID CFDictionaryGetTypeID()

Returns:
  The type identifier for the `CFDictionary` opaque type.

  `CFMutableDictionary` objects have the same type identifier as `CFDictionary` objects.

### CFNumberGetTypeID

CoreFoundation.CFTypeID CFNumberGetTypeID()

Returns:
  The type identifier for the `CFNumber` opaque type.

### CFStringGetTypeID

CoreFoundation.CFTypeID CFStringGetTypeID()

Returns:
  The type identifier for the `CFString` opaque type.