Re: VB Activex control with a window in a ATL project

From:

"vijay" <vijay116@gmail.com>

Newsgroups:

microsoft.public.vc.atl

Date:

14 Mar 2007 10:30:23 -0700

Message-ID:

<1173893423.829731.137680@y80g2000hsf.googlegroups.com>

Hi,

Thanks for the reply...I followed your other extensive posts about ATL
hosting with a window.(for activex control)
I was able to solve this problem..almost.

Just one more problem with receiving events from VB activex in the
ATL..

Trying to use DispEventAdvise SINK_ENTRY_INFO...any pointers?

Is this the right way to receive events in ATL from VB activex?
---------------------------------------------------------------------------------------------------------------------------

static _ATL_FUNC_INFO OnPBFrameInfo = {CC_STDCALL, VT_EMPTY, 3,
{VT_DATE, VT_I2, VT_I2}};
static _ATL_FUNC_INFO OnPBErrorInfo = {CC_STDCALL, VT_EMPTY, 2,
{VT_I2, VT_BSTR}};
static _ATL_FUNC_INFO OnPBCreateWInfo = {CC_STDCALL, VT_EMPTY,
VT_NULL};
static _ATL_FUNC_INFO OnPBStateInfo = {CC_STDCALL, VT_EMPTY, 1,
{VT_I2}};

class CPBEventSink : public IDispEventImpl<IDC_PBOBJ, CPBEventSink,
&::DIID__IGEvents>
{
public:

    //CPBEventSink(CDVRUnitConnection* conn):m_pConn(conn){};
    CPBEventSink()
    {
    }

BEGIN_SINK_MAP(CPBEventSink)
    //Make sure the Event Handlers have __stdcall calling convention
    SINK_ENTRY_INFO(IDC_PBOBJ, DIID__IGEvents, 0x1, pbFrameNotify,
&OnPBFrameInfo)
    SINK_ENTRY_INFO(IDC_PBOBJ, DIID__IGEvents, 0x6, pbErrorNotify,
&OnPBErrorInfo)
    SINK_ENTRY_INFO(IDC_PBOBJ, DIID__IGEvents, 0x4, pbCreateWindow,
&OnPBCreateWInfo)
    SINK_ENTRY_INFO(IDC_PBOBJ, DIID__IGEvents, 0x14, pbStateChange,
&OnPBStateInfo)
END_SINK_MAP()

    void __stdcall pbFrameNotify(DATE dateFrameTime,
        int nMotionPercentage,
        int nBuffering )
    {
        TCHAR buf[80];
        wsprintf(buf, "FRAME PB Notification Event Received");
        AtlTrace("\n%s",buf);
    }

        // Event Handler
    void __stdcall pbErrorNotify(int nErrorCode,
        BSTR bstrError )
    {
        TCHAR buf[80];
        wsprintf(buf, "ERROR PB Notification Event Received");
        AtlTrace("\n%s",buf);
    }

    void __stdcall pbCreateWindow()
    {
        TCHAR buf[80];
        wsprintf(buf, "ERROR PB Notification Event Received");
        AtlTrace("\n%s",buf);
    }

    void __stdcall pbStateChange(int state)
    {
        TCHAR buf[80];
        wsprintf(buf, "ERROR PB Notification Event Received");
        AtlTrace("\n%s",buf);
    }

};
-----------------------------------------------------------------------------------------------------------------------------------------------------------

and calling DispEventAdvise like this

            m_PBSink=new CPBEventSink();
            hr = m_PBSink->DispEventAdvise(pUnkCtrl, &(::DIID__IGEvents));
Where pUnkCtrl is the pointer to the unknown control..

here I receive hr as "0x80040200"

Thanks
Vijay