Do I assign different or the same class id to 32-bit and 64-bit versions of the same IFilter?

Posted by sharptooth on Stack Overflow See other posts from Stack Overflow or by sharptooth
Published on 2009-11-06T11:39:06Z Indexed on 2010/05/30 13:02 UTC
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Filed under:

Windows

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search

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com

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ifilter

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64-bit

I've implemented my own Microsoft Search IFilter. I need two versions of it - 32-bit and 64-bit for deploying them on corresponding systems.

In case of IFilters for any file extension I can only register one IFilter class id. Which means I can only use one version on any system. So having two class ids seems useless - it only makes the automatic installer more complex.

Do I reuse the same COM class id for both or do I use different class ids?

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