Re: Crash in CFileDailog when called from hook procedure (OFNHookProc)

From:
shyam gupta <shyamguptadce@gmail.com>
Newsgroups:
microsoft.public.vc.mfc
Date:
Fri, 7 May 2010 00:57:44 -0700 (PDT)
Message-ID:
<28e9da91-d75e-4427-addf-7803bb1bfe07@42g2000prb.googlegroups.com>
Here is the call stack. Plz let me know if u can spot any problem

Thanks

==========================
==========================
========

     mfc71ud.dll!_AfxCommDlgProc(HWND__ * hWnd=0x00040eae, unsigned int mess=
age=49265, unsigned int wParam=0, long lParam=28974056) Line 80 + 0x=
16 C++
  user32.dll!77d48709()
  user32.dll!77d54ca6()
  user32.dll!77d70494()
  user32.dll!77d54af2()
  user32.dll!77d54d1c()
  user32.dll!77d48709()
  user32.dll!77d487eb()
  user32.dll!77d70494()
  user32.dll!77d4b368()
  user32.dll!77d70494()
  user32.dll!77d4b3b4()
  ntdll.dll!7c90e473()
  user32.dll!77d494e3()
  user32.dll!77d4c0de()
  user32.dll!77d4b7ab()
  comdlg32.dll!763b99d3()
  comdlg32.dll!763b7558()
  comdlg32.dll!763dc029()
  comdlg32.dll!763dd459()
  comdlg32.dll!763dd9e9()
  comdlg32.dll!763dda6a()
  shell32.dll!7caa18b3()
  shell32.dll!7caa9f33()
  shell32.dll!7ca49365()
  ntdll.dll!7c94b1be()
  ntdll.dll!7c94b1be()
  ntdll.dll!7c9261dc()
  ntdll.dll!7c926256()
  ntdll.dll!7c9261dc()
  ntdll.dll!7c926256()
  ntdll.dll!7c96e57f()
  ntdll.dll!7c926256()
  ntdll.dll!7c96f888()
  ntdll.dll!7c91ae19()
  ntdll.dll!7c91aa2b()
  ntdll.dll!7c9101db()
  ntdll.dll!7c96f86c()
  ntdll.dll!7c94bc5a()
  ntdll.dll!7c926256()
  ntdll.dll!7c96f86c()
  ntdll.dll!7c94bc5a()
  ntdll.dll!7c926256()
  user32.dll!77d70494()
  user32.dll!77d4b373()
  user32.dll!77d4b3b4()
  user32.dll!77d4b3c4()
  ntdll.dll!7c96f86c()
  ntdll.dll!7c94bc5a()
  ntdll.dll!7c926256()
  shell32.dll!7c9f1f1b()
  shell32.dll!7c9f1f1b()
  shell32.dll!7c9f1d8d()
  ntdll.dll!7c91005d()
  user32.dll!77d70494()
  ntdll.dll!7c926256()
  ntdll.dll!7c926045()
  ntdll.dll!7c91005d()
  ntdll.dll!7c9171c8()
  ntdll.dll!7c9101db()
  ntdll.dll!7c9170a8()
  ntdll.dll!7c916fc7()
  ntdll.dll!7c917126()
  kernel32.dll!7c80a671()
  shell32.dll!7c9f1e01()
  user32.dll!77d48709()
  user32.dll!77d487eb()
  user32.dll!77d70494()
  user32.dll!77d4b368()
  user32.dll!77d70494()
  user32.dll!77d4b3b4()
  ntdll.dll!7c90e473()
  user32.dll!77d494e3()
  user32.dll!77d4de6e()
  user32.dll!77d4b7ab()
  comctl32.dll!773eaf7b()
  user32.dll!77d484bc()
  user32.dll!77d4b8b6()
  user32.dll!77d4b813()
  comctl32.dll!7741ff1d()
  comctl32.dll!774202c2()
  comctl32.dll!77420cf5()
  user32.dll!77d4c034()
  ntdll.dll!7c917126()
  kernel32.dll!7c80a6ad()
  shell32.dll!7c9f1e38()
  shell32.dll!7c9f1e15()
  user32.dll!77d48709()
  user32.dll!77d48bb1()
  user32.dll!77d48832()
  user32.dll!77d487ff()
  user32.dll!77d48709()
  user32.dll!77d487eb()
  user32.dll!77d4ecd2()
  user32.dll!77d70494()
  user32.dll!77d489a5()
  user32.dll!77d553a0()
  user32.dll!77d70494()
  user32.dll!77d489e8()
  user32.dll!77d6e819()
  user32.dll!77d6e956()
  mfc71d.dll!COleControl::OnSetText(unsigned int wParam=1983578112,
long lParam=428037072) Line 628 + 0x8 C++
  user32.dll!77d568cc()
  user32.dll!77d625b3()
  comdlg32.dll!763b35de()
  comdlg32.dll!763b33e5()
  comdlg32.dll!763b33bc()
  user32.dll!77d48709()
  comdlg32.dll!763c7cc7()
==========================
==========================
========

On May 7, 2:15 am, Joseph M. Newcomer <newco...@flounder.com> wrote:

The code you showed is fundamentally uninteristing. The callback on th=

e stack would be

far more useful, because it would tell us how you got to the failed condi=

tion.

I woud suggest that you post the stack callback.
                                joe

On Thu, 6 May 2010 06:24:17 -0700 (PDT), shyam gupta <shyamgupta...@gmail=

..com> wrote:

I have created a customzied CfileDialog dialog box by attaching a
child dialog to it using the hook procedure (OFNHookProc (....) ). Now
that child dialog also has a browse button that also uses CfileDialog
to select another file. This is done in repsonse to the WM_COMMAND
message. The creation of the modal dialog box is fine. It does all
the operations for selecting the file but when I select the concerned
file and press the open button then the application crashes and the
control goes to objcore.cpp as shown below

BOOL CObject::IsKindOf(const CRuntimeClass* pClass) const
{
   ASSERT(this != NULL);
   // it better be in valid memory, at least for CObject size
   ASSERT(AfxIsValidAddress(this, sizeof(CObject)));

   // simple SI case
   CRuntimeClass* pClassThis = GetRuntimeClass();
   return pClassThis->IsDerivedFrom(pClass);
}

It is not able to ASSERT(this != NULL); statement and hence the
application crashes.

I am not able to figure out the exact cause of the error.

Thanks,
Shyam


Joseph M. Newcomer [MVP]
email: newco...@flounder.com
Web:http://www.flounder.com
MVP Tips:http://www.flounder.com/mvp_tips.htm

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