WinDir$
System function
The WinDir$ function returns the name of the directory where Windows is installed.
Syntax
var$=WinDir$()
Return value
var$, string containing the name of the directory where Windows is installed
Examples
var$=WinDir$()msgbox(var$) 'Returns C:\Windows if Windows system is installed on C:
a$=windir$()+"\system"msgbox(a$) 'Returns C:\Windows\system