[Python-Dev] [docs] undocumented argtypes magic in ctypes?
theller at ctypes.org
Thu Mar 7 14:53:14 CET 2013
> ctypes seems to auto-convert arguments when argtypes is
> specified. This
> fact is documented. However, I'm not sure whether this
> is advanced enough to apply byref. Because otherwise, DIRENT is
> certainly not convertible to DIRENT_p
> If argtypes specify a 'POINTER(X)' type as an argument, then ctypes
> automatically applies byref() if an 'X' instance is passed to the
> actual call. This is by design, but I'm not sure if it is documented
> or not.
> However, if argtypes is not given, this does (and of course cannot)
> Great, thanks for confirming this, Thomas. I had the feeling it's a
> documentation issue (hence I sent it to the docs@ list first), because
> the behavior seems very deliberate and looking at the code of ctypes I
> did see conversions going on.
> Have I missed that this is documented somewhere, or should I open a docs
I didn't find anything in the docs (in the two minutes I spent for
that), so please open a docs issue, or, better, fix it.
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