Converting Excel 2010 32-bit macros to 64-bit

Is there a short list of things that i might have to change in converting workbooks with VBA macros from 32-bit to 64-bit version of excel?
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Michael FowlerSolutions ConsultantCommented:
These links will help

Mostly through it appears that unless you are calling the windows api there should be no major issues.


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Patrick MatthewsCommented:
Agreed with Michael.

The big issue is with APIs.  Other than that, the next big thing will be external libraries.
NorieVBA ExpertCommented:
There's also ActiveX controls, the 32-bit versions won't be compatible with 64-bit.

Not sure if that's an OS issue or an Excel issue though, and I think that might be covered by external libraries as mentioned by matthewspatrick.
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BW999Author Commented:
Thanks.  Sounds like there may not be any big issues if I give it a shot.   I didnt want to waste time if was going to be a big effort.  

One good sign is that I have a 32-bit VB.NET application that calls Excel-32.   Miraculously it installs and run fine on a machine with only Excel-64 bit.

I am going to leave this open for a while to see if there is any more input....

Ingeborg Hawighorst (Microsoft MVP / EE MVE)Microsoft MVP ExcelCommented:
This question has been classified as abandoned and is closed as part of the Cleanup Program. See the recommendation for more details.
BW999Author Commented:
Thanks to you all.
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