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Add from_buffer and from_buffer_copy class methods to ctypes types.

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Thomas Heller 2008-04-25 15:44:16 +00:00
parent 5364e2e46f
commit 6ad5fbb7ea
4 changed files with 221 additions and 0 deletions
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22
Doc/library/ctypes.rst
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@ -1950,6 +1950,28 @@ Data types
exact, they are methods of the :term:`metaclass`):
.. method:: _CData.from_buffer(source[, offset])
This method returns a ctypes instance that shares the buffer of
the ``source`` object. The ``source`` object must support the
writeable buffer interface. The optional ``offset`` parameter
specifies an offset into the source buffer in bytes; the default
is zero. If the source buffer is not large enough a ValueError
is raised.
.. versionadded:: 2.6
.. method:: _CData.from_buffer_copy(source[, offset])
This method creates a ctypes instance, the buffer is copied from
the source object buffer which must be readable. The optional
``offset`` parameter specifies an offset into the source buffer
in bytes; the default is zero. If the source buffer is not
large enough a ValueError is raised.
.. versionadded:: 2.6
.. method:: from_address(address)
This method returns a ctypes type instance using the memory specified by