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# CTUnderlineStyleModifiers

Underline style modifiers.

```
struct CTUnderlineStyleModifiers
```

## Overview

You can apply these underline style modifiers to the underline style ([`CTUnderlineStyle`](/documentation/CoreText/CTUnderlineStyle)) that you set with the [`kCTUnderlineStyleAttributeName`](/documentation/CoreText/kCTUnderlineStyleAttributeName) attribute. These modifiers control the pattern of the underline.

## Topics

### Constants

[`patternSolid`](/documentation/CoreText/CTUnderlineStyleModifiers/patternSolid)

A modifier that indicates to draw a solid underline.

[`patternDot`](/documentation/CoreText/CTUnderlineStyleModifiers/patternDot)

A modifier that indicates to draw an underline using a pattern of dots.

[`patternDash`](/documentation/CoreText/CTUnderlineStyleModifiers/patternDash)

A modifier that indicates to draw an underline using a pattern of dashes.

[`patternDashDot`](/documentation/CoreText/CTUnderlineStyleModifiers/patternDashDot)

A modifier that indicates to draw an underline using a pattern of alternating dashes and dots.

[`patternDashDotDot`](/documentation/CoreText/CTUnderlineStyleModifiers/patternDashDotDot)

A modifier that indicates to draw an underline using a pattern of a dash followed by two dots.

### Initializers

[`init(rawValue:)`](/documentation/CoreText/CTUnderlineStyleModifiers/init(rawValue:))

Creates an underline style modifiers structure with the specified raw value.


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