How do I use a 32 Bit COM object from a 64 bit process?

Question

I Use Jacob (JAVA COM Bridge) on a 64 Bit Machine and want to load COM Objects from a 32 bit DLL. How can I do that?

score 1 · Answer 1 · answered Dec 11 '08 at 15:56

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You will need to host the 32 bit COM object in a 32bit process. So either your entire app will have to run 32bit or youll need to place the COM object in something like COM+ and use cross process calls.

answered Dec 11 '08 at 15:56

AnthonyWJones

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score 0 · Accepted Answer · answered Mar 30 '09 at 10:42

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I solved the problem as follows: Created a small 32 bit out-of-process COM server (.exe) that serves as a factory COM object to create the needed 32 bit objects. So now my app is running 64bit and using 32 bit COM objects.

My64bitApp<-->32BitOutOfProcFactory<-->32bitCOMServerDLL

answered Mar 30 '09 at 10:42

Hannes de Jager

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Why exactly did you not create a COM+ application instead? – sharptooth Mar 30 '09 at 10:50
I think I was unsure how to do this with the host process being a Java VM, also I have no control over the 32 bit COM server DLL, its a 3rd party library. – Hannes de Jager Apr 23 '09 at 08:36

How do I use a 32 Bit COM object from a 64 bit process?

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