Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards

This is the documentation for an old version of boost. Click here for the latest Boost documentation.
windows::overlapped_handle::assign (2 of 2 overloads)

Assign an existing native handle to the handle.

void assign(
    const native_handle_type & handle,
    boost::system::error_code & ec);