When I was in add CActiveXUI controls has been written in the XML file cldis and controls the name,

 & lt; HorizontalLayout> 
 

Then at the time of the initial control

 void CMainFrame: : InitWindow () 
{
//bound controls a pointer 
UI_BINDCONTROL (CButtonUI m_Close, _T (" Close ")); 
//UI_BINDCONTROL (COptionUI m_pOptionSynUi,) 
UI_BINDCONTROL (CActiveXUI m_pCActiveXUI, "IO_OCX"); 
If (m_pCActiveXUI) 
{
_DBIO_InjectModel * CActiveUIObject=NULL;//this is my ocx control class, 
M_pCActiveXUI - & gt; GetControl (IID_IUnknown, (LPVOID *) & amp; CActiveUIObject); 
If (CActiveUIObject!=NULL) 
{
CActiveUIObject - & gt; BIO_DNXK_SetActBtnShow (1); 
} 
} 
//the progress bar 
//m_pProgress - & gt; The SetTimer (1, 200); 


} 

GetControl problem in this function
Below is the function implementation:

 
HRESULT CActiveXUI: : GetControl (const IID IID, LPVOID * ppRet) 
{
ASSERT (ppRet!=NULL); 
ASSERT (* ppRet==NULL); 
If (ppRet==NULL) return E_POINTER; 
If (m_pUnk==NULL) return E_PENDING;//return directly here also, m_pUnk this pointer to an empty 
Return m_pUnk - & gt; PpRet QueryInterface (iid, (LPVOID *)); 
} 

Don't know is what I call the wrong order or other reasons cause I'm trying to display a OCX control page program crashes, don't know if you have met,