Writing an OPC client with Python ?
pierlau
pl.leroy at free.fr
Fri Mar 3 16:03:31 EST 2006
Larry Bates a écrit :
>
> pierlau wrote:
>
>>Hello,
>>
>>I use an OPC server for connection to DC Drive.
>>I would like to write a small OPC client.
>>I have the dll OPCDAAuto.dll which contains all class and method but I
>>wonder if its possible to instance in python the class that are in the dll ?
>>
>>Thanks for your help .
>>
>>Pierre
>>
>>
>>
>
>
> You can call methods/functions in a .dll using ctypes.
>
> http://starship.python.net/crew/theller/ctypes/
>
> -Larry Bates
I have tried with ctypes.
I acheived to load the library
it works when I use following instructions :
print windll.OPCDAAuto or print cdll.OPCDAAuto
(i see an handle number)
But I can't run the functions?
I there a way to 'see' the inside of the dll
(i.e. to list the methods) ?
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