Man page - fcconfigappfontadddir(3)
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Manual
FcConfigAppFontAddDir
NAMESYNOPSIS
DESCRIPTION
NAME
FcConfigAppFontAddDir - Add fonts from directory to font database
SYNOPSIS
#include <fontconfig/fontconfig.h>
FcBool FcConfigAppFontAddDir (FcConfig * config , const FcChar8 * dir );
DESCRIPTION
Scans the specified directory for fonts, adding each one found to the application-specific set of fonts. Returns FcFalse if the fonts cannot be added (due to allocation failure). Otherwise returns FcTrue. If config is NULL, the current configuration is used.