Sometimes it is useful for a developer to be aware of the Environment Variables that are set within the Windows Operating System that their application is running on. The following method is a general approach at returning this information:

If (Count parameters=1)  C_TEXT($0;$1)  C_TEXT($in;$out;$err;$findThis_t)  $findThis_t:=$1+"="  SET ENVIRONMENT VARIABLE("_4D_OPTION_HIDE_CONSOLE";"true")  LAUNCH EXTERNAL PROCESS("cmd.exe /C set | findstr "+$findThis_t;$in;$out;$err)  If (Position($findThis_t;$out)=0)   ` variable not found   $0:="**not found**"  Else   ` variable found   $0:=Substring($out;Length($findThis_t)+1)  End if End if

When the method above is saved as UTIL_get_EnvironmentVar it can be called like this:

$localAppData:=UTIL_get_EnvironmentVar("LOCALAPPDATA")

In this situation, the return value may look like this:

C:\Users\username.domain\AppData\Local