Manpage of FcPatternGet
#include <fontconfig.h>
FcResult FcPatternGet (FcPattern *p, const char *object, intid, FcValue *v);
Returns in `v the `idth value associated with the property `object'. The value returned is not a copy, but rather refers to the data stored within the pattern directly. Applications must not free this value.
Fontconfig version 2.2.2