---
name: "FcPatternAdd-Type"
section: "3"
platform: "linux"
package: "fontconfig"
version: "2:2.18.3-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/FcPatternAdd-Type"
---

# FcPatternAdd-Type(3)

Add a typed value to a pattern

## NAME

FcPatternAddInteger, FcPatternAddDouble, FcPatternAddString, FcPatternAddMatrix, FcPatternAddCharSet, FcPatternAddBool, FcPatternAddFTFace, FcPatternAddLangSet, FcPatternAddRange - Add a typed value to a pattern

## SYNOPSIS

**#include \<fontconfig/fontconfig.h\>**

**FcBool FcPatternAddInteger (FcPattern \****p***, const char \****object***, int** *i***);**

**FcBool FcPatternAddDouble (FcPattern \****p***, const char \****object***, double** *d***);**

**FcBool FcPatternAddString (FcPattern \****p***, const char \****object***, const FcChar8 \****s***);**

**FcBool FcPatternAddMatrix (FcPattern \****p***, const char \****object***, const FcMatrix \****m***);**

**FcBool FcPatternAddCharSet (FcPattern \****p***, const char \****object***, const FcCharSet \****c***);**

**FcBool FcPatternAddBool (FcPattern \****p***, const char \****object***, FcBool** *b***);**

**FcBool FcPatternAddFTFace (FcPattern \****p***, const char \****object***, const FT\_Face** *f***);**

**FcBool FcPatternAddLangSet (FcPattern \****p***, const char \****object***, const FcLangSet \****l***);**

**FcBool FcPatternAddRange (FcPattern \****p***, const char \****object***, const FcRange \****r***);**

## DESCRIPTION

These are all convenience functions that insert objects of the specified type into the pattern.  Use these in preference to FcPatternAdd as they will provide compile-time typechecking.  These all append values to any existing list of values. **FcPatternAddRange** are available since 2.11.91.