private void TestModifyStop()
{
int hr;
long l1, l2;
IAMTimelineObj pObj = (IAMTimelineObj)m_pSource1Src;
hr = m_pSource1Src.ModifyStopTime(1200);
DESError.ThrowExceptionForHR(hr);
hr = pObj.GetStartStop(out l1, out l2);
DESError.ThrowExceptionForHR(hr);
Debug.Assert(l2 == 1200, "ModifyStopTime");
}