Function

CFStringCreateWithFormatAndArguments

Creates an immutable string from a formatted string and a variable number of arguments (specified in a parameter of type va_list).

Declaration

CFStringRef CFStringCreateWithFormatAndArguments(CFAllocatorRef alloc, CFDictionaryRef formatOptions, CFStringRef format, va_list arguments);

Parameters

alloc

The allocator to use to allocate memory for the new string. Pass NULL or kCFAllocatorDefault to use the current default allocator.

formatOptions

A CFDictionary object containing formatting options for the string (such as the thousand-separator character, which is dependent on locale). Currently, these options are an unimplemented feature.

format

The formatted string with printf-style specifiers. For information on supported specifiers, see String Format Specifiers.

arguments

The variable argument list of values to be inserted into the formatted string contained in format.

Return Value

An immutable string, or NULL if there was a problem creating the object. Ownership follows the The Create Rule.

Discussion

The programming interface for variable argument lists (va_list, va_start, va_end, and so forth) is declared in the standard C header file stdarg.h.

See Also

Creating a CFString

CFSTR

Creates an immutable string from a constant compile-time string.

CFStringCreateArrayBySeparatingStrings

Creates an array of CFString objects from a single CFString object.

CFStringCreateByCombiningStrings

Creates a single string from the individual CFString objects that comprise the elements of an array.

CFStringCreateCopy

Creates an immutable copy of a string.

CFStringCreateFromExternalRepresentation

Creates a string from its “external representation.”

CFStringCreateWithBytes

Creates a string from a buffer containing characters in a specified encoding.

CFStringCreateWithBytesNoCopy

Creates a string from a buffer, containing characters in a specified encoding, that might serve as the backing store for the new string.

CFStringCreateWithCharacters

Creates a string from a buffer of Unicode characters.

CFStringCreateWithCharactersNoCopy

Creates a string from a buffer of Unicode characters that might serve as the backing store for the object.

CFStringCreateWithCString

Creates an immutable string from a C string.

CFStringCreateWithCStringNoCopy

Creates a CFString object from an external C string buffer that might serve as the backing store for the object.

CFStringCreateWithFormat

Creates an immutable string from a formatted string and a variable number of arguments.

CFStringCreateWithPascalString

Creates an immutable CFString object from a Pascal string.

CFStringCreateWithPascalStringNoCopy

Creates a CFString object from an external Pascal string buffer that might serve as the backing store for the object.

CFStringCreateWithSubstring

Creates an immutable string from a segment (substring) of an existing string.