how to detect x64 vs. x86?

Richard Gaskin ambassador at
Thu Sep 27 08:57:00 CDT 2012

Phil Davis wrote:
> On Windows, is there a variable / shell command / registry entry my app
> can look at to see whether the OS is 32- or 64-bit? It would be nice if
> you could do it the same way across Vista, 7, 8; but I'll settle for
> what exists.

On an exclusively 64-bit system you'll know it's 64-bit because LiveCode 
won't run. ;)

If it has 32-bit compatibility installed, what should the return value 
be for a function that asks whether the OS is 32-bit or 64-bit?

This might be a good thread for the improve list to work out syntax for 
a proposed new function.

  Richard Gaskin
  Fourth World
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