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VersionNT vs VersionNT64

I am having problems with conditional installation of files. I think if is the releationship of VersionNT and VersionNT64.
For example on Vista 32 bit VersionNT=600. Is VersionNT64 guaranted to be 0?
OnVista64 bit VersionNT64=600. Is VersionNT =0?

There is a chart defining VersionNT but it does not define which version of the OS and does not define VersonNT64

BarberColman Tuesday, August 18, 2009 5:19 PM

Conditions don't work on directories. I know the IDE implies they do, but they don't. Conditions work on files (and underneath that's actually a condition on the installer component containing the file or registry entry).

Phil Wilson

Marked As Answer byBarberColman Thursday, August 20, 2009 1:44 PM

PhilWilson Wednesday, August 19, 2009 6:25 PM

VersionNT doesn't have a value of 0 on 64-bit systems.It's value is undefined, like the VersionNT64 property is undefined on 32-bit systems. I believe you can check that it's undefined with VersionNT64=""

Phil Wilson

PhilWilson Tuesday, August 18, 2009 5:43 PM

Just to help define what is happening I added two new directories to my setup projects files system and added VersionNT64="" as a conditionto one and VersionNT=''" to another. Compiled and installed. Neither directory was created. What?

BarberColman Tuesday, August 18, 2009 6:47 PM

Phil Wilson