Re: calling ' extern "C" int __declspec(dllexport) ' declared functions?

At 06:51 PM 8/12/2010, Mark McMahon wrote:
># can you get a reference the DLL
>dll = ctypes.windll.YOURDLLNAME

yes, it also wasn't immediately obvious that it was a cdecl (which I 
used with partial sucess), not a windll

>Can you get references to the functions...
>SetBlockSize = dll.SetBlockSize  #using SetBlockSize is easier as 
>the argument is a plain int
>
>ret = SetBlockSize = SetBlockSize(123)

it returns zero (apparently OK, by the .h file comment)

># does ret have the return code for success (or expected return value?)
>
>For GetBlockSize - you will need to read the doc and see what to do 
>with pointer/reference values :)  (but usually ctypes.byref(var) or 
>ctypes.pointer(var) are what you need).

I tried both byref and pointer, but both returned -1; I'll be talking 
to the hardware maker tomorrow

Do you write Python code for AutoCAD?

Thanks,
Ray 


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