private void TestDirty()
{
int hr;
long l1, l2;
double d1, d2;
// Not supported
hr = m_pVideoGroupObj.SetDirtyRange(1, 2);
Debug.Assert(hr == E_NOTIMPL, "SetDirtyRange");
// Not supported
hr = m_pVideoGroupObj.SetDirtyRange2(1.1, 2.2);
Debug.Assert(hr == E_NOTIMPL, "SetDirtyRange2");
// Not supported
hr = m_pVideoGroupObj.GetDirtyRange(out l1, out l2);
Debug.Assert(hr == 0 && l1 == -1 && l2 == -1, "GetDirtyRange");
// Not supported
hr = m_pVideoGroupObj.GetDirtyRange2(out d1, out d2);
Debug.Assert(hr == 0 && d1 == -0.0000001 && d2 == -0.0000001, "GetDirtyRange2");
// Not supported
hr = m_pVideoGroupObj.ClearDirty();
//Debug.Assert(hr == E_NOTIMPL, "ClearDirty");
}