FcStrDowncase (3) - Linux Manuals
FcStrDowncase: create a lower case translation of a string
NAME
FcStrDowncase - create a lower case translation of a string
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrDowncase (const FcChar8 *s);
DESCRIPTION
Allocates memory, copies s, converting upper case letters to lower case and returns the allocated buffer.