Finding Rhino's Installation Folder
Windows only
Problem
You are putting together an installer for your Rhino plugin. You would like to know how you can, programatically, get Rhino’s installation folder.
Solution
Rhino 64-bit
If you are looking for Rhino 64-bit, then you can find the location of Rhino’s installation folder by looking in the Windows Registry in this location:
Hive: HKEY_LOCAL_MACHINE
Key: SOFTWARE\McNeel\Rhinoceros\<version>x64\Install
Name: InstallPath
Type: REG_SZ