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windowsinstallationnsis

Is it possible for 32 bit NSIS to launch a 64 bit program?

I'm porting a windows program from 32 -> 64 bit. It has a 32 bit installer which is written using NSIS. Can I launch one of my new 64 bit exes using the 32 bit NSIS installer? I don't think there is a 64 bit version of NSIS...

Solution

  • NSIS uses two Win32 APIs to execute processes ShellExecute (thru ExecShell) and CreateProcess (thru Exec and ExecWait), both of them can run 64 bit process (x64) from NSIS 32 bit process (as long as you're running on 64 bit OS).