Retrieves the next part of the outline.
[Visual Basic 6.0] Function NextOutlinePart As IGeometry
[Visual Basic .NET] Public Function NextOutlinePart ( _ ) As IGeometry
[C#] public IGeometry NextOutlinePart ( );
[Java] public IGeometry nextOutlinePart ( ) throws IOException, AutomationException
[C++] HRESULT NextOutlinePart( IGeometry** outlinePart );