////////////////
/// Get/Set owner
private void TestOwner()
{
int hr;
IntPtr owner1, owner2;
// Read the current value
hr = m_ivw.get_Owner(out owner1);
Marshal.ThrowExceptionForHR(hr);
// Change it
hr = m_ivw.put_Owner((IntPtr)(owner1.ToInt32() + 1));
Marshal.ThrowExceptionForHR(hr);
// Re-read
hr = m_ivw.get_Owner(out owner2);
Marshal.ThrowExceptionForHR(hr);
// Put it back to null
hr = m_ivw.put_Owner(IntPtr.Zero);
Marshal.ThrowExceptionForHR(hr);
// Make sure the value we set is what we just read
Debug.Assert(owner1.ToInt32() + 1 == owner2.ToInt32(), "get/set Owner");
}