_removeObject abortTransaction addChildDocument addObject addObject afterRestore afterRestore commitTransaction create create deleteIDocument deleteSubPartOrProduct exportGraphviz exportObjects getAllDocument getAvailableRedoNames getAvailableRedos getAvailableUndos getDependentDocuments getDocCategory getDocumentByDocCategory getDocumentById getDocumentByName getDocumentId getDocumentObjects getDocumentObjectsHasName getDocumentType getErrorDescription getFileName getId getLinksTo getLocalPlacement getName getObject getObjectById getObserverDelegate getParentDocument getParentDocumentByType getPartMaps getPlacement getProgramVersion getPropertyAccessor getRefCount getRootDocument getRootObjects getSubDocument getTemplateDirName getTransactionID getTransientDirectoryName getUniqueObjectName hasPendingTransaction importFile importLinks isClosable isPerformingTransaction isSaved isTransactionEmpty loadFile locateObjs moveObject openTransaction paramterNewObject purgeTouched recomputeDocument removeAllObjects removeChildDocument removeObject save saveAs setActiveIDocument setDocCategory setDocumentLabel setDocumentName setFileName setId setLocalPlacement setObserverDelegate setPlacement setRootIDocument setUndoMode topologicalSort ~IDocument

isSaved() virtual bool isSaved ( ) const pure virtual 文档是不是已经保存了 文档是不是已经保存了 返回 true：保存了，false：没保存