Gets or sets the method to handle the onload event.
HRESULT value = object.put_onload(VARIANT v);HRESULT value = object.get_onload(VARIANT p);
the event handler.
The onload event occurs when the object has been completly received from the server.
After the onload event has occured, IHTMLXDomainRequest::responseText contains the complete server response.
Build date: 11/12/2012