---
name: "FcCharSetAddChar"
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/FcCharSetAddChar"
---

# FcCharSetAddChar(3)

Add a character to a charset

## NAME

FcCharSetAddChar - Add a character to a charset

## SYNOPSIS

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

**FcBool FcCharSetAddChar (FcCharSet \****fcs***, FcChar32** *ucs4***);**

## DESCRIPTION

**FcCharSetAddChar** adds a single Unicode char to the set, returning FcFalse on failure, either as a result of a constant set or from running out of memory.