Visual LISP, AutoLISP and General Customization

[#1]

Hi Abbas,

glad you got a solution

Henrique

[#2]

What about many years known function:

(defun is64 ()
 (vl-load-com)
 (> (strlen (vl-prin1-to-string (vlax-get-acad-object))) 40)
) 

P.S.: Version of Windows (i.e.. x86 or x64) and version of AutoCAD can be different. For example AutoCAD 2007 x86 can be installed and work on Windows x64 (XP/Vista/Win7). Version of arx-files dependent of AutoCAD version and not of Windows version.

[#3]

Alexander.Rivilis wrote:
What about many years known function:
...

Alexander. thank you, "many years known function"
but I did not know ...

Henrique

[#4]

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Alexander. thank you, "many years known function"

but I did not know ...

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This is because you do not use Search.

[#5]

Alexander.Rivilis wrote:
This is because you do not use Search.
...

not correct, I often use "search" is a very good tool and is my first choice...

Henrique

[#6]

what is you opinion about reading from registry?

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment\PROCESSOR_ARCHITECTURE

[#7]

Inspecting (getvar "PLATFORM") will not work, as you have found. You must use (getenv "PROCESSOR_ARCHITECTURE") for inspecting the architecture of the running AutoCAD. See ISX64.LSP here:

http://www.manusoft.com/software/freebies/lisp.html

[#8]

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aqdam1978 wrote:

what is you opinion about reading from registry?

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Control\Session Manager\Environment\PROCESSOR_ARCHITECTURE

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PROCESSOR_ARCHITECTURE allow check Windows architecture (x86/x64) but not a AutoCAD architecture. As I wrote above this is not the same thing.