handling return codes from CTYPES
Duncan Booth
duncan.booth at invalid.invalid
Mon Jan 21 06:11:22 EST 2013
Steve Simmons <square.steve at gmail.com> wrote:
> >>> from ctypes import *
> >>> sLib = cdll.slib
> >>> lic_key = c_char_p("asdfghjkl".encode(encoding='utf_8',
> errors='strict'))
> >>> initResult = sLib.InitScanLib(lic_key.value)
> >>> print("InitScanLib Result: ", initResult)
> InitScanLib Result: 65535
> >>>
>
> I've tried declaring initResult as c_short by: inserting...
>
> >>> initResult = c_short(0)
>
> ... before the call to sLib.InitScanLib but I still get the same
> response (65535).
Tell the function what type to return before you call it:
InitScanLib = sLib.InitScanLib
InitScanLib.restype = c_short
See http://docs.python.org/2/library/ctypes.html#return-types
You can also tell it what parameter types to expect which will make calling
it simpler.
--
Duncan Booth http://kupuguy.blogspot.com
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