Destroying ActiveX control

[Jacek]

Hi All,
I have MDI application, each MDI view contains property pages, each page
hosts WebBrowser control.
My problem is that when I close MDI document, occasionally the "Unhandled
exception" occurs. This causes crash (not always...).
All pointers up to COleControlSite destructor look ok for me...
The error occurs at m_pObject->Close(OLECLOSE_NOSAVE);
I'm lost... Any ideas?

Stack trace:

ntdll.dll!_DbgBreakPoint@0()
ntdll.dll!_RtlpBreakPointHeap@4() + 0x28
ntdll.dll!_RtlpValidateHeapEntry@12() + 0x113
ntdll.dll!_RtlDebugSizeHeap@12() + 0x90
ntdll.dll!_RtlSizeHeap@12() + 0x38afa
ole32.dll!CRetailMalloc_GetSize() + 0x20
oleaut32.dll!APP_DATA::FreeCachedMem() + 0x24
oleaut32.dll!_SysFreeString@4() + 0x35
ieframe.dll!439ba407()
iertutil.dll!433a3b34()
iertutil.dll!433a3b61()
ieframe.dll!439d02c2()
ieframe.dll!439a79a8()
ieframe.dll!439a8797()
ieframe.dll!439a8716()
ieframe.dll!439a7d54()
ieframe.dll!439d0df7()
ieframe.dll!439d0d89()
ieframe.dll!439cec34()
ieframe.dll!439cebca()
ieframe.dll!439cc60c()
user32.dll!_InternalCallWinProc@20() + 0x28
user32.dll!_UserCallWinProcCheckWow@32() + 0xb7
user32.dll!_DispatchClientMessage@20() + 0x4d
user32.dll!___fnDWORD@4() + 0x24
ntdll.dll!_KiUserCallbackDispatcher@12() + 0x13
user32.dll!_NtUserDestroyWindow@4() + 0xc
ieframe.dll!439cffa7()
ieframe.dll!439d0128()
ieframe.dll!439d00c1()
mfc71d.dll!COleControlSite::~COleControlSite() Line 109 C++
PrawnikDbg.exe!CCustomControlSite::~CCustomControlSite() Line 13 + 0xf C++
PrawnikDbg.exe!CCustomControlSite::`scalar deleting destructor'() + 0x16
C++
mfc71d.dll!COleControlSiteOrWnd::~COleControlSiteOrWnd() Line 122 + 0x22
C++
mfc71d.dll!COleControlSiteOrWnd::`scalar deleting destructor'() + 0xf C++
mfc71d.dll!COleControlSite::DestroyControl() Line 327 + 0x1c C++
mfc71d.dll!CWnd::DestroyWindow() Line 990 + 0x11 C++
MyAppd.dll!CHtmlPage::DestroyHtmlControl() Line 900 + 0x11 C++
MyAppd.dll!CHtmlPage::OnDestroy() Line 189 + 0x11 C++

Best regards,
Jo

[Jacek]

Dnia Thu, 16 Oct 2008 14:15:08 +0200, Jacek napisał(a):

> Hi All,
> I have MDI application, each MDI view contains property pages, each page
> hosts WebBrowser control.

My system: Windows XP SP3
Intel E8400
2GB RAM

Jo