For more information about DVASPECT, see the MSDN Library.
The common language runtime throws an exception when a COM method in native code returns an HRESULT. For more information, see How to: Map HRESULTs and Exceptions.
A representation of an object that lets that object be displayed as an embedded object inside a container. This value is typically specified for compound document objects. The presentation can be provided for the screen or printer.
A representation of an object on the screen as though it were printed to a printer using the Print command from the File menu. The described data may represent a sequence of pages.
An iconic representation of an object.
A thumbnail representation of an object that lets that object be displayed in a browsing tool. The thumbnail is approximately a 120 by 120 pixel, 16-color (recommended), device-independent bitmap potentially wrapped in a metafile.