Description GMountOperation provides a mechanism for interacting with the user. It can be used for authenticating mountable operations, such as loop mounting files, hard drive partitions or server locations. It can also be used to ask the user questions or show a list of applications preventing unmount or eject operations from completing. Note that GMountOperation is used for more than just GMount objects – for example it is also used in g_drive_start() and g_drive_stop(). Users should instantiate a subclass of this that implements all the various callbacks to show the required dialogs, such as GtkMountOperation. If no user interaction is desired (for example when automounting filesystems at login time), usually NULL can be passed, see each method taking a GMountOperation for details.