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    <p>I would use a Queue of strings with a critical section inside <code>push()</code> and <code>pop()</code>. Inside the thread I would pop strings off, and log them. Inside the GUI thread I would push strings on the queue. I have done something similar before, and it is simple to implement.</p> <hr> <h2>Edit</h2> <p>Interface:</p> <pre><code>TThreadSafeQueue = class(TQueue) protected procedure PushItem(AItem: Pointer); override; function PopItem: Pointer; override; function PeekItem: Pointer; override; end; var CRITICAL_SECTION: TCriticalSection; </code></pre> <p>Implementation:</p> <pre><code>function TThreadSafeQueue.PeekItem: Pointer; begin CRITICAL_SECTION.Enter; Result := inherited PeekItem; CRITICAL_SECTION.Leave; end; function TThreadSafeQueue.PopItem: Pointer; begin CRITICAL_SECTION.Enter; Result := inherited PopItem; CRITICAL_SECTION.Leave; end; procedure TThreadSafeQueue.PushItem(AItem: Pointer); begin CRITICAL_SECTION.Enter; inherited PushItem(AItem); CRITICAL_SECTION.Leave; end; </code></pre> <p>Initialization</p> <pre><code>CRITICAL_SECTION := TCriticalSection.Create; </code></pre> <p>Finalization</p> <pre><code>FreeAndNil(CRITICAL_SECTION); </code></pre> <p>This code uses pointers to objects, but you can create storage for your strings inside the object, using a stringlist or array or whatever best fits your purpose, and change the pop and push methods to operate on your own storage.</p> <hr> <h2>Edit</h2> <p>Something like this:</p> <pre><code>procedure TMyThread.Execute; var Msg: string; begin while not Terminated do begin if FQueue.Count &gt; 0 then begin Msg := FQueue.pop(); PerformLog(Msg); {Whatever your logging method is} end; Sleep(0); end; end; </code></pre>
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    1. POExecute thread on some object property change
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    1. USCaleb Hattingh
    1. USCaleb Hattingh
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    1. COyes I thought queue to use too, because it logs to server and it need to hold maybe multiple object for some time. Can you provide me some simple example, then this answer will be accepted :)
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      1. USevilone
    2. COok, but how can I use this on Thread class?
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      1. USevilone
    3. COThe code added above is only a rough suggestion. If you want me to write a complete working example for you, I can submit a quote?
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      1. USCaleb Hattingh
 

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