---
name: "FcObjectSetAdd"
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/FcObjectSetAdd"
---

# FcObjectSetAdd(3)

Add to an object set

## NAME

FcObjectSetAdd - Add to an object set

## SYNOPSIS

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

**FcBool FcObjectSetAdd (FcObjectSet \****os***, const char \****object***);**

## DESCRIPTION

Adds a property name to the set. Returns FcFalse if the property name cannot be inserted into the set (due to allocation failure). Otherwise returns FcTrue.