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Diffstat (limited to 'Doc')
| -rw-r--r-- | Doc/library/ctypes.rst | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst index c172d53..bf32d3e 100644 --- a/Doc/library/ctypes.rst +++ b/Doc/library/ctypes.rst @@ -1326,6 +1326,21 @@ way is to instantiate one of the following classes: 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) |