Step 1: Including OWL header files

An OLE server must include the following OWL header files:

#include <ocf/oledoc.h>   // replaces DOCVIEW.H
#include <ocf/oleview.h>  // replaces DOCVIEW.H
#include <ocf/olemdifr.h>  // replaces MDI.H

An SDI application includes OLEFRAME.H instead of OLEMDIFR.H.