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11/01/2007 at 05:46AM PDT, ID: 22932098
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9.2

InheritsFrom/TraverseClients Problem

Asked by nacker2000 in Delphi Programming

Tags: exception, eaccessviolation, violation

Hi all,

I seem to be getting a random problem and because it doesn't happen all of the time it's hard to debug.

I am getting the following error "Exception EAccessViolation occured in System.TObject.InheritsFrom" when I am creating a form. The problem seems to have only started recently during a big change to some code.

I need to know what InheritsFrom and TraverseClients is and what triggers it so I can attempt to find to find the problem.

This error not only happens randomly but when it does it's like it gets stuck in a loop because my error log can grow to 1MB quite easily in a few seconds.

Here is part of the log:

31/10/2007 20:24:40.250 Exception EAccessViolation occured in System.TObject.InheritsFrom at 29 in file IdSysBase.pas
Message: Access violation at address 00404474 in module 'Project1.exe'. Read of address FFFFFFDC
Call stack:
[00404474] System.System.TObject.InheritsFrom (Line 29, "IdSysBase.pas")
[00404793] System.System.@HandleAnyException (Line 29, "IdSysBase.pas")
[00473432] Forms.Forms.TraverseClients
[00473432] Forms.Forms.TraverseClients
[00473432] Forms.Forms.TraverseClients
[004734A0] Forms.Forms.TCustomForm.UpdateActions
[00477662] Forms.Forms.TApplication.DoActionIdle
[00476CDF] Forms.Forms.TApplication.HandleMessage
[0071370E] Project1.Project1.Finalization (Line 327, "unitViewProfile.pas")

Ignore the IdSysBase.pas part, this is just an Indy unit picking up the error, not sure why it does but I know for a fact it's not the problem, it must have an exception handler in it. Any exceptions I seem to have always include this unit.

Line 327 on unitViewProfile.pas is actually the "end." statement at the bottom of the unit.

Any help is greatly appreciated because this is an urgent problem.

Thanks
[+][-]11/01/07 08:20 PM, ID: 20198217

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About this solution

Zone: Delphi Programming
Tags: exception, eaccessviolation, violation
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Solution Provided By: TheRealLoki
Participating Experts: 3
Solution Grade: A
 
 
[+][-]11/02/07 02:37 AM, ID: 20199090

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