Complex sentence: C++ programs may link directly to the C API or benefit from an object-oriented wrapper as well, unfortunately none is provided as part of the original API and only one partial wrapper is currently available from an external source.
Split into simpler sentences: C++ programs may link directly to the C API or benefit from an object-oriented wrapper as well. A wrapper is not provided as part of the original API and only one partial wrapper is currently available from an external source.