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POWhy do I get access violations when a control's class name is very, very long?
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copied!<p>I subclassed a control in order so I can add a few fields that I need, but now when I create it at runtime I get an <code>Access Violation</code>. Unfortunately this Access Violation doesn't happen at the place where I'm creating the control, and even those I'm building with all debug options enabled (including "Build with debug DCU's") the stack trace doesn't help me at all!</p> <p>In my attempt to reproduce the error I tried creating a console application, but apparently this error only shows up in a Forms application, and only if my control is actually shown on a form!</p> <p>Here are the steps to reproduce the error. Create a new VCL Forms application, drop a single button, double-click to create the OnClick handler and write this:</p> <pre><code>type TWinControl<T,K,W> = class(TWinControl); procedure TForm3.Button1Click(Sender: TObject); begin with TWinControl<TWinControl, TWinControl, TWinControl>.Create(Self) do begin Parent := Self; end; end; </code></pre> <p>This successively generates the Access Violation, every time I tried. Only tested this on Delphi 2010 as that's the only version I've got on this computer.</p> <p>The questions would be:</p> <ul> <li>Is this a known bug in Delphi's Generics?</li> <li>Is there a workaround for this?</li> </ul> <h1>Edit</h1> <p>Here's the link to the QC report: <a href="http://qc.embarcadero.com/wc/qcmain.aspx?d=112101" rel="noreferrer">http://qc.embarcadero.com/wc/qcmain.aspx?d=112101</a></p>

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