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POSystem Error. Code: 8. Not enough storage is available to process this command
 

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    <p>We have a few Win32 applications (coded in Delphi 2006) where sometimes the user gets an error message saying <strong>"System Error. Code: 8. Not enough storage is available to process this command."</strong>.</p> <p>From the stacktrace it looks like it is always during CreateWnd call</p> <pre><code>Main ($1edc): 004146cc +070 app.exe SysUtils RaiseLastOSError 00414655 +005 app.exe SysUtils RaiseLastOSError 004ce44c +130 app.exe Controls TWinControl.CreateWnd 00535a72 +022 app.exe cxControls TcxControl.CreateWnd 004ce82a +016 app.exe Controls TWinControl.CreateHandle 00553d21 +005 app.exe cxContainer TcxContainer.CreateHandle 00586ef1 +005 app.exe cxEdit TcxCustomEdit.CreateHandle 005c331d +005 app.exe cxDropDownEdit TcxCustomDropDownEdit.CreateHandle 004ceaf0 +074 app.exe Controls TWinControl.UpdateShowing 004ceb1e +0a2 app.exe Controls TWinControl.UpdateShowing 004cebdc +03c app.exe Controls TWinControl.UpdateControlState 004d118a +026 app.exe Controls TWinControl.CMVisibleChanged 004cb713 +2bb app.exe Controls TControl.WndProc 004cf569 +499 app.exe Controls TWinControl.WndProc 004b727d +4c1 app.exe Forms TCustomForm.WndProc 004cb3a0 +024 app.exe Controls TControl.Perform 004c9f6a +026 app.exe Controls TControl.SetVisible 004b6c46 +03a app.exe Forms TCustomForm.SetVisible 004baf1b +007 app.exe Forms TCustomForm.Show 004bb151 +14d app.exe Forms TCustomForm.ShowModal 007869c7 +0d3 app.exe UfrmPrice 770 +19 TfrmPrice.EditPrice 0078655d +009 app.exe UfrmPrice 628 +0 TfrmPrice.actNewBidExecute 00431ce7 +00f app.exe Classes TBasicAction.Execute 004c2cb5 +031 app.exe ActnList TContainedAction.Execute 004c397c +050 app.exe ActnList TCustomAction.Execute 00431bb3 +013 app.exe Classes TBasicActionLink.Execute 004af384 +090 app.exe Menus TMenuItem.Click 004b059f +013 app.exe Menus TMenu.DispatchCommand 004b16fe +082 app.exe Menus TPopupList.WndProc 004b164d +01d app.exe Menus TPopupList.MainWndProc 004329a8 +014 app.exe Classes StdWndProc 7e4196b2 +00a USER32.dll DispatchMessageA 004bea60 +0fc app.exe Forms TApplication.ProcessMessage 004bea9a +00a app.exe Forms TApplication.HandleMessage 004becba +096 app.exe Forms TApplication.Run 008482c5 +215 app.exe AppName 129 +42 initialization </code></pre> <p>I've never been able to get to the bottom of what causes this and as it happens fairly seldom I haven't been to concerned, but I would like to find out what causes it and hopefully rectify it...</p> <p><strong>EDIT:</strong> Full Stacktrace</p> <p><strong>EDIT 2:</strong> More info... The client who experienced this today has had my app installed for about 4 months and it is running on his PC 8 hours a day. The problem only appeared today and kept reappearing even though he killed my app and restarted it. None of the other apps on his system behaved strangely. After a reboot the problem goes away completely. Does this point towards the heap shortage that Steve mentions?</p> <p><strong>EDIT 3:</strong> Interesting msdn blog post <a href="http://blogs.msdn.com/ntdebugging/archive/2007/01/04/desktop-heap-overview.aspx" rel="noreferrer">here</a> and <a href="http://blogs.msdn.com/ntdebugging/archive/2007/07/05/desktop-heap-part-2.aspx" rel="noreferrer">here</a> on the topic of the desktop heap. Though I'm not sure whether this is the cause of the problem it certainly looks likely.</p>
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