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POApplication crash for unknown reasons on WinXP
 

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  1. POApplication crash for unknown reasons on WinXP
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    <p>I have Delphi XE3, Windows 7 Pro 64bit. My application is working fine in my PC but my users told me application crashes upon start on their Win XP and also (!!) on their Win 7.</p> <p>I tried to run the app on my Win 7 but logged as an ordinary user (no admin) - it works. So now I have installed virtual machine with Windows XP and really - app crashes upon startup.</p> <p>I need to find what can be the problem but I'm helpless.</p> <p>As far as I can't use debugger (I dont have Delphi on that VM installed), I tried to put some <code>MessageBox(0, 'Hello', 'Test', MB_OK);</code> in various places in my app to catch the place where it happens and this is what I found:</p> <p>I have this in my project-source:</p> <pre><code>MessageBox(0, 'Hello', 'Test', MB_OK); // shows OK Application.CreateForm(TfMain, fMain); MessageBox(0, 'Hello', 'Test', MB_OK); // doesn't show - crash before this line </code></pre> <p>And this is in the <code>OnCreate</code> function of my main form called <code>fMain</code>:</p> <pre><code>procedure TfMain.FormCreate(Sender: TObject); begin MessageBox(0, 'Hello', 'Test', MB_OK); // doesn't show - crash before this line ... </code></pre> <p>So where can this app crash?<br> Not even first line in the <code>OnCreate</code> executes....<br> I have no idea... Anybody?</p> <p>Don't know if this is important: I have some units in fMain <code>uses</code> clause under <code>interface</code> and also under <code>implementation</code>. Should I look there? But what happens just before <code>OnCreate</code> of my main form ?</p>
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    1. USKara
    1. USEnriqe
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    1. COYou can't debug because you don't have Delphi installed on your VM. You know there are a couple of really easy ways to fix that, right?
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      1. POApplication crash for unknown reasons on WinXP
      1. USRob Kennedy
    2. CO@Rob Kennedy Hmmm if I knew, I would do that. Any tips?
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      1. USEnriqe
    3. COI'm not Rob, but off the top of my head: 1) Install Delphi on that VM. 2) Use the remote debugger (see the Delphi [documentation](http://docwiki.embarcadero.com/RADStudio/en/Installing,_Starting,_and_Stopping_the_Remote_Debug_Server) for details). As far as "what happens just before `OnCreate`?", use the source. You'll find this in `Forms.pas`.
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      1. POApplication crash for unknown reasons on WinXP
      1. USKen White
 

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