Description The functions and objects described here make working with GTK+ and GIO more convenient. GtkMountOperation is needed when mounting volumes: It is an implementation of GMountOperation that can be used with GIO functions for mounting volumes such as g_file_mount_enclosing_volume(), g_file_mount_mountable(), g_volume_mount(), g_mount_unmount_with_operation() and others. When necessary, GtkMountOperation shows dialogs to ask for passwords, questions or show processes blocking unmount. gtk_show_uri() is a convenient way to launch applications for URIs. Another object that is worth mentioning in this context is GdkAppLaunchContext, which provides visual feedback when lauching applications.