Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

How can I get the value of specific environment variable?

Posted on 2001-08-23
3
227 Views
Last Modified: 2010-04-06
Hello,

I am new to Delphi. I have a question about the environment variable manipulation. I want to know how to define a global environment variable through the program, and how to retrieve the value from existing environment variable?

Many thanks,

ngpk





0
Comment
Question by:ngpk
  • 2
3 Comments
 

Expert Comment

by:d32coder
ID: 6420821
The TRegistry class gives you access to the system registry.

 var Reg: TRegistry; Str: String;

 Reg := TRegistry.Create;

  // set the Registry directory, I forget how
  // Reg.Open('/Variable Path/');
  // Note: HKEY CURRENTUSER is default
 if Reg.ValueExists('GlobalVar') then
  Str := Reg.ReadString('GlobalVar') else
    Str := '';
 ....
 Reg.WriteString('GlobalVar',Str);


 Reg.Free;



Hope this gets you in the right direction, you didn't say which var you are looking for.

Don
0
 
LVL 8

Accepted Solution

by:
TOndrej earned 10 total points
ID: 6420854
Have a look at GetEnvironmentStrings, GetEnvironmentVariable, SetEnvironmentVariable, FreeEnvironmentStrings APIs
0
 

Expert Comment

by:d32coder
ID: 6428685
Are those the variables such as ShortDateFormat?

Don
0

Featured Post

Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Virtuailstring tree compare node issue 14 125
Delphi application Soap connection 5 120
Moving (cutting/pasting) controls in a TTabbedNotebook... 7 44
Dev express lookupcombo 3 35
This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
Hello everybody This Article will show you how to validate number with TEdit control, What's the TEdit control? TEdit is a standard Windows edit control on a form, it allows to user to write, read and copy/paste single line of text. Usua…
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…
I've attached the XLSM Excel spreadsheet I used in the video and also text files containing the macros used below. https://filedb.experts-exchange.com/incoming/2017/03_w12/1151775/Permutations.txt https://filedb.experts-exchange.com/incoming/201…

828 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question