CComControlBase::ControlQueryInterface

Retrieves a pointer to the requested interface.

virtual HRESULT ControlQueryInterface(
   const IID& iid,
      void** ppv 
);

Parameters

• iid
  The GUID of the interface being requested.

• ppv
  A pointer to the interface pointer identified by iid, or NULL if the interface is not found.

Remarks

Only handles interfaces in the COM map table.

Example

// Retrieve the control's IOleObject interface. Note interface 
// is automatically released when pOleObject goes out of scope

CComPtr<IOleObject> pOleObject;
ControlQueryInterface(IID_IOleObject, (void**)&pOleObject);

Requirements

Header: atlctl.h

See Also

Concepts

CComControlBase Class

CComControlBase Members

CComObjectRootEx::InternalQueryInterface