libraries use the standard C calling convention, and are assumed to return

:c:type:`int`.

On Windows creating a:class:`CDLL` instance may fail even if the DLL name

exists. When a dependent DLL of the loaded DLL is not found, a

:exc:`OSError` error is raised with the message *"[WinError 126] The

specified module could not be found".* This error message does not contain

the name of the missing DLL because the Windows API does not return this

information making this error hard to diagnose. To resolve this error and

determine which DLL is not found, you need to find the list of dependent

DLLs and determine which one is not found using Windows debugging and

tracing tools.

..seealso::

`Microsoft DUMPBIN tool<https://docs.microsoft.com/cpp/build/reference/dependents>`_

-- A tool to find DLL dependents.

..class::OleDLL(name, mode=DEFAULT_MODE, handle=None, use_errno=False, use_last_error=False, winmode=0)