The SOMObject class is the root of the OpenDoc class hierarchy. The following figure is an illustration showing the entire class hierarchy for OpenDoc. In this book, each class description shows the location of the class in the OpenDoc class hierarchy by listing its ancestors and its subclasses. The figure also shows the name of the class definition file (IDL) for each OpenDoc class.
Figure 1. Class Hierarchy for Predefined OpenDoc Objects
CLASS NAME CLASS DEFINITION FILE
SOMObject somobj.idl
* SOMClassMgr somcm.idl
* SOMClass somcls.idl
* ODObject odobject.idl
| * ODArbitrator arbitrat.idl
| * ODBaseCanvas canvasb.idl
| | * ODCanvas canvas.idl
| * ODBaseClipboard clipbdb.idl
| | * ODClipboard clipbd.idl
| * ODBaseDispatcher disptchb.idl
| | * ODDispatcher disptch.idl
| * ODBaseDragAndDrop dragdrpb.idl
| | * ODDragAndDrop dragdrp.idl
| * ODBaseDragItemIterator dgitmitb.idl
| | * ODDragItemIterator dgitmit.idl
| * ODBaseFacet facetb.idl
| | * ODFacet facet.idl
| * ODBaseLinkSpec linkspcb.idl
| | * ODLinkSpec linkspec.idl
| * ODBaseNameSpaceManager nmspcmgb.idl
| | * ODNameSpaceManager nmspcmg.idl
| * ODBaseSession odsessnb.idl
| | * ODSession odsessn.idl
| * ODBaseStorageSystem odstorb.idl
| | * ODStorageSystem odstor.idl
| * ODBaseTranslation transltb.idl
| | * ODTranslation translt.idl
| * ODBinding odbindng.idl
| * ODDispatchModule dispmod.idl
| * ODEmbeddedFramesIterator embfritr.idl
| * ODFacetIterator facetitr.idl
| * ODFocusModule focusmod.idl
| * ODFocusOwnerIterator focusown.idl
| * ODFocusSet focusset.idl
| * ODFocusSetIterator focusitr.idl
| * ODFrameFacetIterator frfaitr.idl
| * ODInfo info.idl
| * ODLinkManager linkmgr.idl
| * ODNameSpace namspac.idl
| | * ODObjectNameSpace objectns.idl
| | * ODValueNameSpace valuens.idl
| * ODObjectIterator objctitr.idl
| * ODPlatformCanvas platcanv.idl
| | * ODAIXCanvas aixpcanv.idl
| | | * ODAIXStandardCanvas aixscanv.idl
| | | * ODAIXWindowCanvas aixwcanv.idl
| | * ODOS2Canvas os2pcanv.idl
| | | * ODOS2StandardCanvas os2scanv.idl
| | | * ODOS2WindowCanvas os2wcanv.idl
| | * ODWin32Canvas winpcanv.idl
| | | * ODWin32StandardCanvas winscanv.idl
| | | * ODWin32WindowCanvas winwcanv.idl
| * ODPlatformTypeList pftypls.idl
| * ODPlatformTypeListIterator pftlitr.idl
| * ODRefCntObject refctobj.idl
| | * ODMenuBar menubar.idl
| | * ODPopup popup.idl
| | * ODBaseShape shapeb.idl
| | | * ODShape shape.idl
| | * ODBaseTransform trnsfrmb.idl
| | | * ODTransform transfrm.idl
| | * ODContainer odctr.idl
| | * ODDocument document.idl
| | * ODDraft draft.idl
| | * ODExtension extensn.idl
| | | * ODSettingsExtension settings.idl
| | * ODPersistentObject pstobj.idl
| | | * ODBaseLink linkb.idl
| | | | * ODLink link.idl
| | | * ODBaseLinkSource linksrcb.idl
| | | | * ODLinkSource linksrc.idl
| | | * ODFrame frame.idl
| | | * ODPart part.idl
| | * ODStorageUnit storageu.idl
| | * ODWindow window.idl
| * ODStorageUnitCursor sucursor.idl
| * ODStorageUnitRefIterator surefitr.idl
| * ODStorageUnitView suview.idl
| * ODTemplates odtemps.idl
| * ODTypeList typelist.idl
| * ODTypeListIterator typlsitr.idl
| * ODUndo undo.idl
| * ODValueIterator valueitr.idl
| * ODWindowIterator winiter.idl
* * ODWindowState winstat.idl
The ancestors of a given class are shown as a path down the class hierarchy. The hierarchy of each class begins with the SOMObject class and ends with the class being described. For example, the following branch appears in the class description of the ODDocument class. The branch indicates that ODRefCntObject is a parent of ODDocument, ODObject is the parent of ODRefCntObject, and SOMObject is the parent of ODObject.
SOMObject
ODObject
ODRefCntObject
ODDocument
Some OpenDoc object classes cannot be instantiated. You cannot create an instance for that object class. These classes are base classes that provide support for descendant classes that can be instantiated.