Solved

Easy, I think!

Posted on 1998-03-23
1
144 Views
Last Modified: 2011-09-20
Hi,
     I want to take info from the user into a TStringList. Firstly, there is no component associated with the stringlist, so do I declare it in the  unit's type declaration, or as a variable?
    The info is taken from an edit box. So I tried writing this:

var
   mylist : TStringList;
begin
   mylist.Add(edit1.Text);
end;

When I run this, it compiles OK, but when I try to use it, it says 'EGPFault'. Do I have to instantiate the TStringList anywhere?
Cheers, Nik

0
Comment
Question by:NikWhit
1 Comment
 
LVL 4

Accepted Solution

by:
d003303 earned 10 total points
ID: 1360735
Right, you must create an object before you use it and free it afterwards. So your code should read

var
   mylist : TStringList;
begin
   myList := TStringList.Create
   mylist.Add(edit1.Text);
   // whatever code...

  myList.Free;
end;

If you want to use myList globally, put it into your forms private variables and create it in OnCreate and free it in OnDestroy.

Slash/d003303
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Delphi 10 Seattle Dataset Actions 5 79
Delphi XE10, MySQL Query 4 126
Working this component WebCopy with proxy, help 3 76
HTML text in the body of an email (delphi code) 12 96
Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
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…
Sending a Secure fax is easy with eFax Corporate (http://www.enterprise.efax.com). First, just open a new email message. In the To field, type your recipient's fax number @efaxsend.com. You can even send a secure international fax — just include t…
Video by: Mark
This lesson goes over how to construct ordered and unordered lists and how to create hyperlinks.

910 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

Need Help in Real-Time?

Connect with top rated Experts

22 Experts available now in Live!

Get 1:1 Help Now