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# Part II. API Reference

Table of Contents

File Operations
  GFile — File and Directory Handling
  GFileAttribute — Key-Value Paired File Attributes
  GFileInfo — File Information and Attributes
  GFileEnumerator — Enumerated Files Routines
  GIOError — Error helper functions
  GMountOperation — Object used for authentication and user interaction
File System Monitoring
  GFileMonitor — File Monitor
File-related Utilities
  GFilenameCompleter — Filename Completer
Asynchronous I/O
  GCancellable — Thread-safe Operation Cancellation Stack
  GAsyncResult — Asynchronous Function Results
  GIOScheduler — I/O Scheduler
  GSimpleAsyncResult — Simple asynchronous results implementation
Data conversion
  GConverter — Data conversion interface
  GCharsetConverter — Convert between charsets
  GZlibCompressor — Zlib compressor
  GZlibDecompressor — Zlib decompressor
Streaming I/O
  GSeekable — Stream seeking interface
  GInputStream — Base class for implementing streaming input
  GOutputStream — Base class for implementing streaming output
  GIOStream — Base class for implementing read/write streams
  GFileInputStream — File input streaming operations
  GFileOutputStream — File output streaming operations
  GFileIOStream — File read and write streaming operations
  GFileDescriptorBased — Interface for file descriptor based IO
  GFilterInputStream — Filter Input Stream
  GFilterOutputStream — Filter Output Stream
  GMemoryInputStream — Streaming input operations on memory chunks
  GMemoryOutputStream — Streaming output operations on memory chunks
  GBufferedInputStream — Buffered Input Stream
  GBufferedOutputStream — Buffered Output Stream
  GDataInputStream — Data Input Stream
  GDataOutputStream — Data Output Stream
  GUnixInputStream — Streaming input operations for UNIX file descriptors
  GUnixOutputStream — Streaming output operations for UNIX file descriptors
  GConverterInputstream — Converter Input Stream
  GConverterOutputstream — Converter Output Stream
  GPollableInputStream — Interface for pollable input streams
  GPollableOutputStream — Interface for pollable output streams
File types and applications
  GContentType — Platform-specific content typing
  GAppInfo — Application information and launch contexts
  GDesktopAppInfo — Application information from desktop files
Volumes and Drives
  GVolumeMonitor — Volume Monitor
  GVolume — Volume management
  GMount — Mount management
  GDrive — Drive management
  Unix Mounts — UNIX mounts
Icons
  GIcon — Interface for icons
  GFileIcon — Icons pointing to an image file
  GLoadableIcon — Loadable Icons
  GThemedIcon — Icon theming support
  GEmblemedIcon — Icon with emblems
  GEmblem — An object for emblems
Failable Initialization
  GInitable — Failable object initialization interface
  GAsyncInitable — Asynchronously failable object initialization interface
Lowlevel network support
  GSocket — Low-level socket object
  GInetAddress — An IPv4/IPv6 address
  GSocketAddress — Abstract base class representing endpoints for socket communication
  GInetSocketAddress — Internet GSocketAddress
  GUnixSocketAddress — UNIX GSocketAddress
  GSocketControlMessage — A GSocket control message
  GUnixFDList — An object containing a set of UNIX file descriptors
  GUnixFDMessage — A GSocketControlMessage containing a GUnixFDList
  GCredentials — An object containing credentials
  GUnixCredentialsMessage — A GSocketControlMessage containing credentials
  GProxy — Interface for proxy handling
  GProxyAddress — An internet address with proxy information
Highlevel network functionallity
  GSocketClient — Helper for connecting to a network service
  GSocketConnection — A socket connection
  GUnixConnection — A UNIX domain GSocketConnection
  GTcpConnection — A TCP GSocketConnection
  GTcpWrapperConnection — wrapper for non-GSocketConnection-based, GSocket-based GIOStreams
  GSocketListener — Helper for accepting network client connections
  GSocketService — Make it easy to implement a network service
  GThreadedSocketService — A threaded GSocketService
TLS (SSL) support
  TLS Overview — TLS (aka SSL) support for GSocketConnection
  GTlsCertificate — TLS certificate
  GTlsConnection — TLS connection type
  GTlsClientConnection — TLS client-side connection
  GTlsServerConnection — TLS server-side connection
  GTlsBackend — TLS backend implementation
  GTlsDatabase — TLS database type
  GTlsFileDatabase — TLS file based database type
  GTlsInteraction — Interaction with the user during TLS operations.
  GTlsPassword — TLS Passwords for prompting
DNS resolution
  GResolver — Asynchronous and cancellable DNS resolver
  GProxyResolver — Asynchronous and cancellable network proxy resolver
  GSocketConnectable — Interface for potential socket endpoints
  GNetworkAddress — A GSocketConnectable for resolving hostnames
  GNetworkService — A GSocketConnectable for resolving SRV records
  GSrvTarget — DNS SRV record target
Lowlevel D-Bus Support
  D-Bus Utilities — Various utilities related to D-Bus.
  D-Bus Addresses — D-Bus connection endpoints
  D-Bus Introspection Data — Node and interface description data structures
  GDBusError — Mapping D-Bus errors to and from GError
  GDBusMessage — D-Bus Message
  GDBusConnection — D-Bus Connections
  GDBusMethodInvocation — Object for handling remote calls
  GDBusServer — Helper for accepting connections
  GDBusAuthObserver — Object used for authenticating connections
Highlevel D-Bus Support
  Owning Bus Names — Simple API for owning bus names
  Watching Bus Names — Simple API for watching bus names
  GDBusInterface — Base type for D-Bus interfaces
  GDBusInterfaceSkeleton — Service-side D-Bus interface
  GDBusProxy — Client-side D-Bus interface proxy
  GDBusObject — Base type for D-Bus objects
  GDBusObjectSkeleton — Service-side D-Bus object
  GDBusObjectProxy — Client-side D-Bus object
  GDBusObjectManager — Base type for D-Bus object managers
  GDBusObjectManagerServer — Service-side object manager
  GDBusObjectManagerClient — Client-side object manager
Settings
  GSettings — High-level API for application settings
  GSettingsBackend — Interface for settings backend implementations
Permissions
  GPermission — An object representing the permission to perform a certain action
  GSimplePermission — A GPermission that doesn't change value
Application support
  GActionGroup — A group of actions
  GSimpleActionGroup — A simple GActionGroup implementation
  GAction — An action
  GSimpleAction — A simple GSimpleAction
  GApplication — Core application class
  GApplicationCommandLine — A command-line invocation of an application
Extending GIO
  GVfs — Virtual File System
  GIOModule — Loadable GIO Modules
  Extension Points — Extension Points
GIO Tools
  gio-querymodules — GIO module cache creation
  gsettings — GSettings configuration tool
  glib-compile-schemas — GSettings schema compiler
  gdbus — Tool for working with D-Bus objects
  gdbus-codegen — D-Bus code and documentation generator

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