How to get the bitness of Windows?

[LVCoder]

Hi all,

How can I get the bitness of Windows the LV application is running on?

Using Conditional disabled structure, I can get the bitness of the application(whether it's built in LV 32 or 64), but not the windows bitness.

Thanks

[billko · Accepted solution]

system variable "PROCESSOR_ARCHITECTURE" ?

[Jeffrey_Zola]

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@LVCoder wrote:

Hi all,

How can I get the bitness of Windows the LV application is running on?

Using Conditional disabled structure, I can get the bitness of the application(whether it's built in LV 32 or 64), but not the windows bitness.

Thanks

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When I lived in Texas about 15 years ago, people would respond to a question like this by saying "None of your bitness!" 

Sorry. I resisted the urge to post this for at least an hour!! 

[altenbach]

According to this link, you can read the following registry key:

HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\BuildLabEx

You'll get a long string presumably containing the required information. I don't know how to parse it.

[LVCoder]

Hi altenbach,

Thanks for your response.

I used "PROCESSO_ARCHITECTURE" to retrieve the OS bitness.

HKEY_LOCAL_MACHINE SYSTEM\ControlSet001\Control\Session Manager\Environment PROCESSO_ARCHITECTURE=AMD64

AMD64 is much easie to parse.

[billko]

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@LVCoder wrote:

Hi altenbach,

Thanks for your response.

I used "PROCESSO_ARCHITECTURE" to retrieve the OS bitness.

HKEY_LOCAL_MACHINE SYSTEM\ControlSet001\Control\Session Manager\Environment PROCESSO_ARCHITECTURE=AMD64

AMD64 is much easie to parse.

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I think you might want to mark my answer as NOT accepted.  It seems I tripped you up and this only reports the arch. of the processor, not the arch. of Windows itself?

[billko]

You might want to do something like look for a unique folder like "C:\Program Files (x86)."  (I think that's what it's called, I'm not using Win7 right now, and I'm not even sure it's the same with earlier versions of Windows (x64).