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    <p>The Official Embarcadero documentation Wiki on the <a href="http://docwiki.embarcadero.com/VCL/en/Generics.Collections.TObjectList" rel="nofollow noreferrer">Generics.Collections.TObjectList</a> contains a simple code example of the <a href="http://docwiki.embarcadero.com/CodeSamples/en/Generics_Collections_TObjectList_(Delphi)" rel="nofollow noreferrer">TObjectList in action</a>.</p> <p>I'm not certain exactly what the question is driving at but to address the broad use of a TObjectList, the example initialisation code for a TObjectList might look like this: </p> <pre><code>var List: TObjectList&lt;TNewObject&gt;; Obj: TNewObject; begin { Create a new List. } List := TObjectList&lt;TNewObject&gt;.Create(); { Add some items to the List. } List.Add(TNewObject.Create('One')); List.Add(TNewObject.Create('Two')); { Add a new item, but keep the reference. } Obj := TNewObject.Create('Three'); List.Add(Obj); </code></pre> <p>The <a href="http://docwiki.embarcadero.com/CodeSamples/en/Generics_Collections_TObjectList_(Delphi)" rel="nofollow noreferrer">example code</a> should give you an idea of what the TObjectList can do but If I've understood the question correctly it seems that you would like to be able to add more than one class type to a single instance of the <a href="http://docwiki.embarcadero.com/VCL/en/Generics.Collections.TObjectList" rel="nofollow noreferrer">TObjectList</a>? A TObjectList can only be initiated with a single type so it might be better if you initiated the TObjectList with a Interface or Abstract class that is shared by all of the classes you wish to add to it. </p> <p>One important difference when using a <a href="http://docwiki.embarcadero.com/VCL/en/Generics.Collections.TObjectList" rel="nofollow noreferrer">TObjectList</a> compared to creating your own is the existance of the <a href="http://docwiki.embarcadero.com/VCL/en/Generics.Collections.TObjectList.OwnsObjects" rel="nofollow noreferrer">OwnsObjects</a> property which tells the <a href="http://docwiki.embarcadero.com/VCL/en/Generics.Collections.TObjectList" rel="nofollow noreferrer">TObjectList</a> whether it owns the objects you add to it and therefore consequently whether it should manage freeing them itself.</p>
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    1. PODelphi: how to use TObjectList<T>?
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    1. COHi Jamiei. I've seen the example you're referring to. Unfortunately, its not as elaborate as I would like, leaving much unsaid. Specifically, I would like to fill two different lists using pretty much the same code. However, as Mason pointed out, it can't be done. So Overload-bonanza, here I come!
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    2. COAh, I thought so, that's why I said that an ObjectList can only be initiated with a single type so if possible you'd have to modify the classes to derive an interface or base class in order to make this work.
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