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windows::basic_random_access_handle::write_some_at (1 of 2 overloads)

Write some data to the handle at the specified offset.

template<
    typename ConstBufferSequence>
std::size_t write_some_at(
    boost::uint64_t offset,
    const ConstBufferSequence & buffers);

This function is used to write data to the random-access handle. The function call will block until one or more bytes of the data has been written successfully, or until an error occurs.

Parameters

offset

The offset at which the data will be written.

buffers

One or more data buffers to be written to the handle.

Return Value

The number of bytes written.

Exceptions

boost::system::system_error

Thrown on failure. An error code of boost::asio::error::eof indicates that the connection was closed by the peer.

Remarks

The write_some_at operation may not write all of the data. Consider using the write_at function if you need to ensure that all data is written before the blocking operation completes.

Example

To write a single data buffer use the buffer function as follows:

handle.write_some_at(42, boost::asio::buffer(data, size));

See the buffer documentation for information on writing multiple buffers in one go, and how to use it with arrays, boost::array or std::vector.


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