windows::overlapped

windows::overlapped_handle

Provides Windows handle functionality for objects that support overlapped I/O.

class overlapped_handle

Types

Name	Description
executor_type	The type of the executor associated with the object.
lowest_layer_type	An overlapped_handle is always the lowest layer.
native_handle_type	The native representation of a handle.

Member Functions

Name	Description
assign	Assign an existing native handle to the handle.
cancel	Cancel all asynchronous operations associated with the handle.
close	Close the handle.
get_executor	Get the executor associated with the object.
get_io_context	(Deprecated: Use get_executor().) Get the io_context associated with the object.
get_io_service	(Deprecated: Use get_executor().) Get the io_context associated with the object.
is_open	Determine whether the handle is open.
lowest_layer	Get a reference to the lowest layer. — Get a const reference to the lowest layer.
native_handle	Get the native handle representation.
operator=	Move-assign an overlapped_handle from another.
overlapped_handle	Construct an overlapped_handle without opening it. — Construct an overlapped_handle on an existing native handle. — Move-construct an overlapped_handle from another.

Protected Member Functions

Name	Description
~overlapped_handle	Protected destructor to prevent deletion through this type.

The windows::overlapped_handle class provides the ability to wrap a Windows handle. The underlying object referred to by the handle must support overlapped I/O.

Thread Safety

Distinct objects: Safe.

Shared objects: Unsafe.

Requirements

Header: asio/windows/overlapped_handle.hpp

Convenience header: asio.hpp