FcConfigAppFontAddFile − Add font file to font database
#include <fontconfig/fontconfig.h>
FcBool FcConfigAppFontAddFile (FcConfig *config, const FcChar8 *file);
Adds an application-specific font to the configuration. Returns FcFalse if the fonts cannot be added (due to allocation failure). Otherwise returns FcTrue. If config is NULL, the current configuration is used.