##### windows::overlapped_ptr::overlapped_ptr (2 of 3 overloads)

Construct an `windows::overlapped_ptr` to contain the specified handler.

    template<
        typename ExecutionContext,
        typename Handler>
    overlapped_ptr(
        ExecutionContext & context,
        Handler && handler,
        typename enable_if< is_convertible< ExecutionContext &, execution_context & >::value >::type *  = 0);