private void TestSub()
{
int hr;
object o;
string s = "{" + MediaType.URLStream.ToString() + "}";
string s2;
Guid g;
bool b;
int iDepth;
IAMTimelineGroup pGroup;
s = s.ToUpper();
hr = m_pVideoGroupObj.GetSubObjectLoaded(out b);
DESError.ThrowExceptionForHR(hr);
Debug.Assert(!b, "Loaded");
hr = m_pVideoGroupObj.SetSubObject(m_pVideoGroupObj2);
DESError.ThrowExceptionForHR(hr);
hr = m_pVideoGroupObj.GetSubObject(out o);
DESError.ThrowExceptionForHR(hr);
Debug.Assert(m_pVideoGroupObj2 == (IAMTimelineObj)o, "SubObject");
hr = m_pVideoGroupObj.GetSubObjectLoaded(out b);
DESError.ThrowExceptionForHR(hr);
Debug.Assert(b, "Loaded");
hr = m_pVideoGroupObj2.GetGroupIBelongTo(out pGroup);
DESError.ThrowExceptionForHR(hr);
Debug.Assert(pGroup == m_pVideoGroupObj2, "GetGroupIBelongTo");
hr = m_pVideoGroupObj.SetSubObjectGUID(MediaType.URLStream);
DESError.ThrowExceptionForHR(hr);
hr = m_pVideoGroupObj.GetSubObjectGUID(out g);
DESError.ThrowExceptionForHR(hr);
Debug.Assert(g == MediaType.URLStream, "SubObjGuid");
hr = m_pVideoGroupObj.SetSubObjectGUIDB(s);
DESError.ThrowExceptionForHR(hr);
hr = m_pVideoGroupObj.GetSubObjectGUIDB(out s2);
DESError.ThrowExceptionForHR(hr);
s2 = s2.ToUpper();
Debug.Assert(s == s2, "SubObjGuidB");
// Not supported
hr = m_pVideoGroupObj2.GetEmbedDepth(out iDepth);
DESError.ThrowExceptionForHR(hr);
hr = m_pVideoGroupObj2.Remove();
DESError.ThrowExceptionForHR(hr);
hr = m_pVideoGroupObj.RemoveAll();
DESError.ThrowExceptionForHR(hr);
}