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##### windows::basic_object_handle::cancel (2 of 2 overloads)

Inherited from windows::basic_handle.

Cancel all asynchronous operations associated with the handle.

    boost::system::error_code cancel(
        boost::system::error_code & ec);

This function causes all outstanding asynchronous read or write operations to finish immediately, and the handlers for cancelled operations will be passed the `boost::asio::error::operation_aborted` error.

###### Parameters

ec

  Set to indicate what error occurred, if any.