How to detect if the computer is a x64 machine ?!

[ChristopheOce]

Hi,

I have a basic msi project.
Is it possible during the install to know if the machine is on x64 or not !?
create a launch condition but how i can detect the x64 !?

Have you got any idea ?!

thanks for all
Christophe

[bplivard]

Hi,

Though I'm a new user, I've been paying a lot with setup prerequisites and system search.
If you go for a setup prerequisite, in the Prerequisite condition, when you select "Setup is running on a specified platform", there already are a number of entries for X64 processor architectures you may choose from.

If you go for a system search, according to Microsoft, you may check the processor architecture from this registry key and its value:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Environment\PROCESSOR_ARCHITECTURE.

I hope this helps.

[Holger_G]

You can use the 'VersionNT64' property as a condition.

[ChristopheOce]

Hi both,

thanks for your information.
On the registry i can check if the computer is a x64 or not !

I have a virtual machine vlm who is a windows xp sp2 x64 !

If i go to the registry i can see that's there is a x64 bits.

but there is a one thing i can't understand !

if i execute this custom action on the next button on my basic msi :
this custom action gets the property versionnt64

function IsItX64(hMSI)
      
      string szVal, szMsg;
      NUMBER cchValueBuf;
begin
    
    cchValueBuf = 512;
    MsiGetProperty(hMSI, "VersionNT64", szVal, cchValueBuf);
    
    if(szVal != "") then
         
         switch(szVal)
         	case "501" :
         	 szMsg = "_ WINDOWS XP _";
         	 
         	case "502" :
         	 szMsg = "_ WIN 2003 _";
         	 
         	case "600" :
         	 szMsg = "_ WIN VISTA _";
             
             default :
             szMsg = "_ UNKNOW TYPED _";
             
         endswitch;
         
         //Display the result
         MessageBox("Valeur : " + szVal + "Identification : " + szMsg, INFORMATION);
    
    else
    
         MessageBox("Computer is runing under x86.", INFORMATION);
    
    endif;
    
end;   

i obtain it's win 2003 !!! then the pc it's a windows xp !!!

Someone can tell me what's happens ?


Thanks for all
Christophe

[MichaelU]

Windows XP for x64 has the same version number as Windows Server 2003. To tell which you are on you will need to also examine the MsiNTProductType Property - look for the non-server value.

[ChristopheOce]

Hi Mickael,

that's correct, i've read this yesturday evening on the site microsoft !

Thanks for all
Christophe