Here is a list of all enum values with links to the files they belong to:

VLINK_RET_INVALID_ERROR : c_api.h
VLINK_RET_MEMORY_ERROR : c_api.h
VLINK_RET_NO_ERROR : c_api.h
VLINK_RET_RUNTIME_ERROR : c_api.h
VLINK_RET_TRANSFER_ERROR : c_api.h
VLINK_RET_UNEXPECTED_ERROR : c_api.h
VLINK_RET_UNKNOWN_ERROR : c_api.h
VLINK_SCHEMA_FLATBUFFERS : c_api.h
VLINK_SCHEMA_PROTOBUF : c_api.h
VLINK_SCHEMA_RAW : c_api.h
VLINK_SCHEMA_UNKNOWN : c_api.h
VLINK_SCHEMA_ZEROCOPY : c_api.h