how to detect 64bit platform by script

Question

is there code to detect 64 platform e.g.

if X86 then ...
if X64 then ...

Answer 1

Yes.

Use

if IsWin64 then
  // Do sth
else
  // Do sth else

There is also a Is64BitInstallMode function. Indeed, a 32-bit setup can run on a 64-bit OS. Hence, Is64BitInstallMode implies IsWin64, but IsWin64 does not imply Is64BitInstallMode.