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copied!<p>If you're using CComPtr then that's generally the main thing I'd advise, but I did find something that might help, if you're using Visual Studio.</p> <p>Sara Fords blog has a really cool tip:</p> <p><a href="http://saraford.net/2005/05/03/did-you-know-how-to-debug-addrefrelease-issues-in-visual-studio/" rel="nofollow">Debugging AddRef/Release issues in VS</a></p> <p>You might get a <em>lot</em> of information logged, but the basic idea is to trace your addref/release calls in Visual Studio and you can look for mismatched pairs of AddRef/Release.</p> <p>Might be a bit of legwork but it looks like quite a cunning idea.</p> <p>Edit 2: Good morning;</p> <p>Ok, if you're not using DllGetClassObject then that's not going to be a reference problem. Using IUknowns as in/out parameters <em>does</em> have a caveat though; This is the blurb from MSDN for AddRef:</p> <blockquote> <p>Call this method for every new copy of an interface pointer that you make. For example, if you are passing a copy of a pointer back from a method, you must call AddRef on that pointer. You must also call AddRef on a pointer before passing it as an in-out parameter to a method; the method will call IUnknown::Release before copying the out-value on top of it.</p> </blockquote> <p>Similarly for release:</p> <blockquote> <p>Call this method when you no longer need to use an interface pointer. If you are writing a method that takes an in-out parameter, call Release on the pointer you are passing in before copying the out-value on top of it.</p> </blockquote>

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