Atozed Forums

Good Morning,
Good morning,
I'm testing version 15.2.47 trying to migrate an old  Intraweb 14 project.
At run-time I got an access violation message in the module IwbaseHTMLForm

...
public:
/ * TIWBaseForm.Create * / inline __fastcall virtual TIWBaseHTMLForm (System :: Classes :: TComponent * AOwner): Iwbaseform :: TIWBaseForm (AOwner) {}

....


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[/img]

Do you have some suggestions how to solve that problem ?
Thank you in advance.

Francesco Sgaravatti

Cant see the image. I assume you have code in the create?

Can you please copy and paste here the call stack of the exception? If you are unsure how to do it: when the exception happens, click "Break", go to View -> Debug Windows -> Call stack, and copy everything you see there

Also, seems that you are using C++ Builder, right? Can you please tell me what version is that?

(11-27-2021, 09:32 PM)Alexandre Machado Wrote: [ -> ]Can you please copy and paste here the call stack of the exception? If you are unsure how to do it: when the exception happens, click "Break", go to View -> Debug Windows -> Call stack, and copy everything you see there

Also, seems that you are using C++ Builder, right? Can you please tell me what version is that?

Hi,
I Thank You for your answer.

I use c++ Builder RAD studio XE3.

STACK:

:00a0ba50 System::__linkproc__ UStrAsg + 0x4
:01261146 ; TIWCGCustomRegion
:00983a1d ; ReadComponent
:00983cce ; ReadDataInner
:00983c0d ; ReadData
:0098fab6 System::Classes::TComponent::ReadState + 0x6
:00984b5e ; ReadRootComponent
:0097ecbf ; ReadComponent
:00c29d54 ; _16403
:00c29de2 ; _16404
:00c29e22 Iwbaseform::_16405 + 0x1A
:00c2a032 ; TIWBaseForm
:0066FCC8 Iwbasehtmlform::TIWBaseHTMLForm::TIWBaseHTMLForm(this=:08D8E8F0, AOwner=:05D0D710)
:0066FC14 Iwform::TIWForm::TIWForm(this=:08D8E8F0, AOwner=:05D0D710)
:0066F740 Iwappform::TIWAppForm::TIWAppForm(this=:08D8E8F0, AOwner=:05D0D710)
:00697D6B TfiwLogin::TfiwLogin(this=:08D8E8F0, Owner=:05D0D710)
:00c302e1 ; CreateAndShowDefaultPage
:00be95c3 ; _16429
:00b75061 ; ExecuteUrl
:00b75569 ; Execute
:00be639c Iwserversession::HttpExecute + 0x2C
:00b7a33e ; DoCommandGet
:00c53cad ; DoExecute
:00c46822 Incontext::TInContext::Run + 0x12
:01421f4d Madexcept::_17437 + 0x2D
:0098df15 ; _17936
:00a0b51e System::_17323 + 0x2A
:01421e33 Madexcept::_17435 + 0xF
:01421e9b ; _17436
:76bffa29 KERNEL32.BaseThreadInitThunk + 0x19
:77077a9e ; ntdll.dll
:77077a6e ntdll.RtlGetAppContainerNamedObjectPath + 0xee

I attached also some screen-shots.

Best Regards
Francesco Sgaravatti

Your call stack shows that the exception occurs inside a CGDevTools control (more specifically TIWCGCustomRegion):

:01261146 ; TIWCGCustomRegion

Do you have CGDevTools source code? If so, depending on the version, you may need to tweak it a little

Hi Alexandre,
Thank you for your answer.

I am evaluating CgdevTools version 4.1.0.295 without source code.
If I purchased the license with code, would you be able to indicate the changes to be made?

Francesco Sgaravatti

In the previous month I suggested a few changes to CGDevTools source code to make it work better with IW 15.2.x and, as a consequence, also a few situations where you could potentially get an AV were removed. If you get the source code, probably this will also be available to you. But answering your question, yes, I can point you the changes to avoid those.

Kind regards,

Thank you very much Alexandre,
i fixed the problem temporarily with a downgrade to version 14.2.13 (It's okay fo XE3), but for the future (Embarcadero new versions) now i know how to deal that !
Francesco