[python-win32] parameters got changed after passing to a function through COM (original) (raw)

Chen Huang chuang at rim.com
Thu Jan 31 23:27:08 CET 2008

Hello all,

I am experiencing a weird problem when using third-party software through COM. There is an API function X belongs to Object A from that third-party software. I use python generated COM interface and use dispatch to get that Object A. Then I call that function X in python. The function X requires an unsigned integer N as a parameter along with 2 other parameters. But for some reason, the parameter N got changed after it's going through COM, it's changed to 0xFFFFFFFF. I printed the parameter before calling that function X in python and the function in third-party print out the initial parameter it receives. These two print-outs are different. I also experienced with other Object in that third-party software. The problem doesn't exist in other object or other functions in object A.

Does anyone have any idea of what went wrong here? I don't know if the problem lies in my part of python program or in the python win32com or in the third-party COM support.

Thank you very much!

Chen

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