The PickContext type exposes the following members.
Thue if GroupObjects should be added to the pick list
pick chord starts on near clipping plane and ends on far clipping plane.
True if the user had activated subobject selection
This view can be a model view or a page view. When view is a page view, then you need to distingish between the viewports MainViewport() and ActiveViewport(). When m_view is a model view, both MainViewport() and ActiveViewport() return the world view's viewport.