Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!snorkelwacker!bloom-beacon!eru!luth!sunic!tut!tucos!kontu!eholmberg
From: eholmberg@kontu.utu.fi
Newsgroups: comp.lang.pascal
Subject: Re: Various Turbo pascal questions
Message-ID: <14711.2574e3f4@kontu.utu.fi>
Date: 30 Nov 89 08:25:24 GMT
References: <2185@leah.Albany.Edu> <257452CA.28297@maccs.dcss.mcmaster.ca>
Lines: 24

In article <257452CA.28297@maccs.dcss.mcmaster.ca>, cs4g6ag@maccs.dcss.mcmaster.ca (Stephen M. Dunn) writes:
> In article <2185@leah.Albany.Edu> ppd491@leah.Albany.Edu (Peter P. Donohue) writes:
> $  3) Is there a way to read the 'variables' (I'm not sure of the exact
> 
>    I don't know if TP has any built-in functions to handle this ... if
> not, you have to check out the word at PSP:$2C.  This is the segment

Beginning from Turbo Pascal version 5.0, there is a way 
to read in environment variables: the function GetEnv. 
If you want to find out for example what's stored in 
the variable PROCOMM, simply call
   x := GetEnv('PROCOMM');
in your program, and x contains the variable. (GetEnv 
returns type String, so x must be String, too..).

Unfortunately, there seems to be no (clean) way to change 
the environment variables from a program.. :-(

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