The CTParagraphStyle opaque type represents paragraph or ruler attributes in an attributed string.


A paragraph style object represents a complex attribute value in an attributed string, storing a number of subattributes that affect paragraph layout for the characters of the string. Among these subattributes are alignment, tab stops, writing direction, line-breaking mode, and indentation settings.


Creating Paragraph Styles

Getting the Value of a Style Specifier

Getting the Type Identifier

func CTParagraphStyleGetTypeID() -> CFTypeID

Returns the Core Foundation type identifier of the paragraph style object.

Data Types

struct CTParagraphStyleSetting

This structure is used to alter the paragraph style.

class CTParagraphStyle

A reference to a Core Text paragraph style.


enum CTTextAlignment

These constants specify text alignment.

enum CTLineBreakMode

These constants specify what happens when a line is too long for its frame.

enum CTWritingDirection

These constants specify the writing direction.

enum CTParagraphStyleSpecifier

Constants used to query and modify a paragraph style object.

See Also

Opaque Types


The CTFont opaque type represents a Core Text font object. Font objects represent fonts to an application, providing access to characteristics of the font, such as point size, transform matrix, and other attributes. Fonts provide assistance in laying out glyphs relative to one another and are used to establish the current font when drawing in a graphics context.


The CTFontCollection opaque type represents a font collection, that is, a group of font descriptors taken together as a single object.


The CTFontDescriptor opaque type represents a font descriptor, that is, a dictionary of attributes (such as name, point size, and variation) that can completely specify a font.


The CTFrame opaque type represents a frame containing multiple lines of text. The frame object is the output resulting from the text-framing process performed by a framesetter object.


The CTFramesetter opaque type is used to generate text frames. That is, CTFramesetter is an object factory for CTFrame objects.


The CTGlyphInfo opaque type enables you to override a font's specified mapping from Unicode to the glyph ID.


The CTLine opaque type represents a line of text.


The CTRun opaque type represents a glyph run, which is a set of consecutive glyphs sharing the same attributes and direction.


The CTRunDelegate opaque type represents a run delegate, which is assigned to a run (attribute range) to control typographic traits such glyph ascent, glyph descent, and glyph width.


The CTTextTab opaque type represents a tab in a paragraph style, storing an alignment type and location.


The CTTypesetter opaque type represents a typesetter, which performs line layout.