how to detect OS architecture?

[Hugo Florentino]

On Wed, 18 Dec 2013 13:20:45 -0000, Regan Heath wrote:
> On Wed, 18 Dec 2013 04:22:23 -0000, Hugo Florentino <hugo at acdam.cu> 
> wrote:
>
>> On Tue, 17 Dec 2013 15:13:18 +0100, Gary Willoughby wrote:
>>>
>>> Make sure you handle if users have a 32bit OS installed on a
>>> 64bit PC.
>>
>> As a matter of fact that was the actual configuration in the system 
>> I  wrote the app.
>> I am now with a friend with the same configuration, and it also 
>> seems to  be working.
>> At work I use Windows 7 x86_64 and it also works.
>
> It works because the SYSTEM_INFO member "wProcessorArchitecture" is
> defined to be "The processor architecture of the installed operating
> system" .. note, *installed operating system*, not processor
> architecture.
>

Well, isn't that what I needed to begin with?
That's why I said OS architecture instead of CPU architecture.
Unless you are refering to something else.