in GUI objects, store reference to base_qobject instead of resource_manager We'll need access to both the resource_manager and the shortcut_manager in many objects. The shortcut_manager will be moved to be a member of the base_qobject class instead of being a singleton, so this change will make it easier to access both of these as well as any other core GUI properties in any of the Octave-specific widgets that make up the GUI. Once again, may files are affecte but the changes are straightforward: store a reference to the base_qobject object and access the resource_manager object from that instead of storing a reference to the resource_manager directly.