Gets the owner DocumentReader.
Instances of the DocumentObjectManager aren't created directly. Instead, access the instance that is automatically created inside a DocumentReader using the ObjectManager property.
For an example, refer to DocumentObjectManager.
Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2