On Thu, Mar 7, 2013 at 5:53 AM, Thomas Heller <thel...@ctypes.org> wrote:
> ctypes seems to auto-convert arguments when argtypes is >> specified. This >> fact is documented. However, I'm not sure whether this >> auto-conversion >> 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) >> work. >> >> 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 >> issue? >> > > 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. http://bugs.python.org/issue17378, has a patch already. Please take a look. Eli
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