How to modify TList value?

Question

Delphi 2010 How to modify TList < record > value ?

type TTest = record a,b,c:Integer end;
var List:TList;
    A:TTest;
    P:Pointer;
....
..         


        

Answer 1

If you need to manipulate objects in that form, it is better to use TObjectList instead of TList, and define the structure as a class rather than a record:

type TTest = class a,b,c:Integer end;
var List:TObjectList;
    A:TTest; // A is an object so there's no need for a pointer
....
....
List.Add(TTest.Create);
List.Last.a := 1;
A:=List.Last;