Queries the application as to whether an object should be inserted. This member is called when pasting and when reading RTF.
HRESULT QueryInsertObject(
  LPCLSID lpclsid,  
  LPSTORAGE lpstg,  
  LONG cp           
);
 Returns success status. If the SCODE of the result is not S_OK, the object is not inserted.
  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Unsupported.
  Header: Declared in richole.h.
Rich Edit Controls Overview, Rich Edit OLE Interfaces, IRichEditOleCallback