AppDocObserverDelegate appDocumentCreating appDocumentIsBeingDestructed delegateName documentRestore documentSave getGuiDocDelegateName IDocument m_pDoc setDocument ~AppDocObserverDelegate

documentSave() virtual void documentSave ( Base::Writer &  writer ) virtual 保存文档 在文档保存过程中触发，可通过 writer 写入自定义数据。 参数 [in] writer 保存写入器