multiple instances of activeX in MFC

[knight730]

Hi,

I have set mulitiple instances in my MFC application. It's normarl while beginning,but when I made them quit ,the app crash!!!!

who knows?
//create vlc

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for (int i=0;i<vlcCount;i++) { memset(temp,0,sizeof(temp)); sprintf_s(temp,10,"%d",(i+1)); vlc[i] = NULL; vlc[i] = new CVlcplugin1; //position CRect rect; GetClientRect(&rect); rect.SetRect(cx,cy,cx+190,cy+190); cx+=200; if (cx==1400) { cy+=200; cx=0; } vlc[i]->Create(temp,WS_CHILD | WS_VISIBLE ,rect,this,IDC_VLCPLUGIN1); VARIANT va; VariantInit(&va); vlc[i]->addTarget ("c:\\test.avi", va, 1,0); vlc[i]->put_Visible(TRUE); vlc[i]->put_Volume(50); } //play for (int i=0;i<vlcCount;i++) { vlc[i]->play(); }

//release vlc

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for (int i=0;i<count;i++) { if (vlc[i]!=NULL) { if (vlc[i]->get_Playing()) { vlc[i]->stop(); vlc[i]->DestroyWindow(); delete vlc[i]; vlc[i]=NULL; } } }

thanks you!
cheers
maojz

[Jean-Baptiste Kempf]

Give us backtrace and FIX vlc!

[knight730]

thank you j-b
Ok,I will describe the problem with more specifiction.

when I set more than two vlc in my MFC application,In the release vlc fuction,in the second "for cycle",at vlc->destroywindow(); the app will crash.and jump this window: Monitors.exe at 0x7c92eb74 exception: 0xC0000008: An invalid handle was specified.

and the code will jump into occsite.cpp ,at m_pObject->Release();:

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COleControlSite::COleControlSite(COleControlContainer* pCtrlCont) : m_pCtrlCont(pCtrlCont), m_pWndCtrl(NULL), m_pDC(NULL), m_nID((UINT)-1), m_pObject(NULL), m_pInPlaceObject(NULL), m_pActiveObject(NULL), m_pWindowlessObject(NULL), m_dwEventSink(0), m_dwPropNotifySink(0), m_dwMiscStatus(0), m_dwNotifyDBEvents(0), m_pDataSourceControl(NULL), m_pDSCSite(NULL), m_defdispid(0), m_dwType(0), m_pBindings(NULL), m_bIgnoreNotify(FALSE), m_bIsDirty(FALSE), m_bIsWindowless(FALSE) { memset(&m_varResult, 0, sizeof(VARIANT)); m_varResult.vt = VT_EMPTY; } COleControlSite::~COleControlSite() { if (m_pCtrlCont && m_pCtrlCont->m_pSiteCapture == this) { m_pCtrlCont->m_pSiteCapture = NULL; } delete m_pDataSourceControl; DetachWindow(); DisconnectSink(m_iidEvents, m_dwEventSink); DisconnectSink(IID_IPropertyNotifySink, m_dwPropNotifySink); DisconnectSink(IID_INotifyDBEvents, m_dwNotifyDBEvents); if (m_pWindowlessObject != NULL) { m_pWindowlessObject->Release(); m_pWindowlessObject = NULL; } if (m_pInPlaceObject != NULL) { m_pInPlaceObject->InPlaceDeactivate(); m_pInPlaceObject->Release(); m_pInPlaceObject = NULL; } if (m_pActiveObject != NULL) { m_pActiveObject->Release(); m_pActiveObject = NULL; } if (m_pObject != NULL) { m_pObject->SetClientSite(NULL); m_pObject->Close(OLECLOSE_NOSAVE); m_pObject->Release(); m_pObject = NULL; } ::VariantClear(&m_varResult); BindProperty(DISPID_UNKNOWN, NULL); // gets rid of complex bindings if (m_defdispid != 0 && m_pDSCSite != NULL && m_pDSCSite->m_pDataSourceControl != NULL) { // get rid of simple bindings m_pDSCSite->m_pDataSourceControl->BindProp(this, FALSE); } if (m_pCtrlCont && m_bIsWindowless) { m_pCtrlCont->m_nWindowlessControls--; ASSERT(m_pCtrlCont->m_nWindowlessControls >= 0); } }

Any question with the release fuction that I have writed?


thank you !
Best Regards,
maojz

[knight730]

I used vlc :0.8.6d

[knight730]

Anybody knows about it???
It seems a bug for VLC.

maojz

[benjis]

Hi

Send me the project and will look into it to: spitzerbenjamin@gmail.com

Benji