The window does not have scroll bars..

D4/win-xp-pro

Since a month or so the workplace that beta-tests my program almost once every day experiences an
error

'The window does not have scroll bars..'
..

It occurs at every workstation and with creation of all different forms. It seems completely random.
The comlete error message is listed below.
The error might suggest a resource problem or handle problem. First i thought these type of errors
should be rare in winxppro. Second running my program through memproof doesn't suggest leakage of
any pointer. Third I am very careful to freeandnil anything i create.

Also I 'd like to know how I could measure resource usage in windows-xp.

I've browsed newsgroup histories for this problem but found nothing usefull.
Since all forms seems to be able to get affected it must be some kind of general problem, but what?
Can you have too many components on your forms? Can your program be too big?
How can I find a solution to this?


========================================================================
The message:
The last line being the line in my code where a form is created - varies depending on the form.


exception class : EOutOfResources
exception message : The window does not have scroll bars..

main thread ($374):
00442d8c pveterin.exe Graphics 2524 GDIError
00463920 pveterin.exe Controls 5397 TWinControl.CreateHandle
004671dc pveterin.exe Controls 7039 TWinControl.HandleNeeded
004671f4 pveterin.exe Controls 7045 TWinControl.GetHandle
00466f52 pveterin.exe Controls 6938 TWinControl.GetDeviceContext
0045da87 pveterin.exe Controls 2697 TControlCanvas.CreateHandle
00442933 pveterin.exe Graphics 2351 TCanvas.RequiredState
004424d8 pveterin.exe Graphics 2213 TCanvas.TextExtent
00442555 pveterin.exe Graphics 2226 TCanvas.TextHeight
0047aeba pveterin.exe Forms 2616 TCustomForm.GetTextHeight
0047abf1 pveterin.exe Forms 2558 TCustomForm.ReadState
004358b9 pveterin.exe Classes 1717 TList.Add
0043b649 pveterin.exe Classes 4756 TReader.ReadRootComponent
00438d23 pveterin.exe Classes 3384 TStream.ReadComponent
0043543e pveterin.exe Classes 1487 InternalReadComponentRes
00435624 pveterin.exe Classes 1532 InitComponent
00435694 pveterin.exe Classes 1541 InitInheritedComponent
0047a4af pveterin.exe Forms 2401 TCustomForm.Create
0048312c pveterin.exe Forms 6487 TApplication.CreateForm
00591942 pveterin.exe UBehandelForm 670 TBehandelForm.Verwerkregels
.

Relevant Pages

  • Re: The window does not have scroll bars..
    ... succes: boolean; ... The window does not have scroll bars.. ... >00463920 pveterin.exe Controls 5397 TWinControl.CreateHandle ... >00442933 pveterin.exe Graphics 2351 TCanvas.RequiredState ...
    (alt.comp.lang.borland-delphi)
  • Re: Scrolling window with child controls
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  • Re: Problem scrolling CControlBars docked in a CFrameWnd
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  • Re: Scrolling window with child controls
    ... to be no api which will return the positions passed to CreateWindow at ... >> window which has child control windows. ... >> I am aware of implementing the scroll if the window has some graphic ... >> recommended way of having the scrolls implemented when controls are on ...
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