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Easy, I think!

Posted on 1998-03-23
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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

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Question by:NikWhit
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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
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