# Gio::AppInfo Class Reference

Application information, to describe applications installed on the system, and launch them. More...

`#include <giomm/appinfo.h>`

Inheritance diagram for Gio::AppInfo:
[legend]

List of all members.

## Public Member Functions

virtual | ~AppInfo ()
GAppInfo* | gobj ()
| Provides access to the underlying C GObject.
const GAppInfo* | gobj () const
| Provides access to the underlying C GObject.
bool | equal (const Glib::RefPtr< AppInfo >& other) const
| Checks if two AppInfos are equal.
std::string | get_id () const
| Gets the ID of an application.
std::string | get_name () const
| Gets the installed name of the application.
std::string | get_description () const
| Gets a human-readable description of an installed application.
std::string | get_executable () const
| Gets the executable's name for the installed application.
std::string | get_commandline () const
| Gets the commandline with which the application will be started.
Glib::RefPtr< Icon > | get_icon ()
| Gets the icon for the application.
const Glib::RefPtr< const Icon > | get_icon () const
| Gets the icon for the application.
bool | launch (const Glib::ListHandle< std::string >& files, const Glib::RefPtr< AppLaunchContext >& launch_context)
| Launches the application.
bool | supports_uris () const
| Checks if the application supports reading files and directories from URIs.
bool | supports_files () const
| Checks if the application accepts files as arguments.
bool | launch_uris (const Glib::ListHandle< std::string >& uris, GAppLaunchContext* launch_context)
| Launches the application.
bool | should_show () const
| Checks if the application info should be shown in menus that list available applications.
bool | can_delete () const
| Obtains the information whether the AppInfo can be deleted.
bool | do_delete ()
| Tries to delete a AppInfo.
bool | set_as_default_for_type (const std::string& content_type)
| Sets the application as the default handler for a given type.
bool | set_as_default_for_extension (const std::string& extension)
| Sets the application as the default handler for the given file extension.
bool | add_supports_type (const std::string& content_type)
| Adds a content type to the application information to indicate the application is capable of opening files with the given content type.
bool | can_remove_supports_type () const
| Checks if a supported content type can be removed from an application.
bool | remove_supports_type (const std::string& content_type)
| Removes a supported type from an application, if possible.

## Static Public Member Functions

static void | add_interface (GType gtype_implementer)
static Glib::RefPtr< AppInfo > | create_from_commandline (const std::string& commandline, const std::string& application_name, AppInfoCreateFlags flags)
static Glib::ListHandle < Glib::RefPtr< AppInfo > > | get_all ()
| Gets a list of all of the applications currently registered on this system.
static Glib::ListHandle < Glib::RefPtr< AppInfo > > | get_all_for_type (const std::string& content_type)
| Gets a list of all AppInfos for a given content type.
static Glib::RefPtr< AppInfo > | get_default_for_type (const std::string& content_type, bool must_support_uris=true)
| Gets the AppInfo that corresponds to a given content type.
static Glib::RefPtr< AppInfo > | get_default_for_uri_scheme (const std::string& uri_scheme)
| Gets the default application for launching applications using this URI scheme.
static void | reset_type_associations (const std::string& content_type)
| Removes all changes to the type associations done by g_app_info_set_as_default_for_type(), g_app_info_set_as_default_for_extension(), g_app_info_add_supports_type() or g_app_info_remove_supports_type().
static bool | launch_default_for_uri (const std::string& uri, const Glib::RefPtr< AppLaunchContext >& context)
| Utility function that launches the default application registered to handle the specified uri.
static bool | launch_default_for_uri (const std::string& uri)

## Related Functions

(Note that these are not member functions.)
Glib::RefPtr< Gio::AppInfo > | wrap (GAppInfo* object, bool take_copy=false)
| A Glib::wrap() method for this object.

## Detailed Description

Application information, to describe applications installed on the system, and launch them.

See also AppLaunchContext.

Since glibmm 2.16:

## Constructor & Destructor Documentation

virtual Gio::AppInfo::~AppInfo | ( |  | ) | `[virtual]`

## Member Function Documentation

static void Gio::AppInfo::add_interface | ( | GType | gtype_implementer | ) | `[static]`

bool Gio::AppInfo::add_supports_type | ( | const std::string & | content_type | ) |

Adds a content type to the application information to indicate the application is capable of opening files with the given content type.

Parameters:

  content_type | A string.

Returns:
  `true` on success, `false` on error.

bool Gio::AppInfo::can_delete | ( |  | ) | const

Obtains the information whether the AppInfo can be deleted.

See g_app_info_delete().

Since glibmm 2.20:

Returns:
  `true` if appinfo can be deleted.

bool Gio::AppInfo::can_remove_supports_type | ( |  | ) | const

Checks if a supported content type can be removed from an application.

Returns:
  `true` if it is possible to remove supported content types from a given appinfo, `false` if not.

static Glib::RefPtr<AppInfo> Gio::AppInfo::create_from_commandline | ( | const std::string & | commandline,
|  | const std::string & | application_name,
|  | AppInfoCreateFlags | flags
| ) |  | `[static]`

bool Gio::AppInfo::do_delete | ( |  | ) |

Tries to delete a AppInfo.

On some platforms, there may be a difference between user-defined AppInfos which can be deleted, and system-wide ones which cannot. See g_app_info_can_delete().

Virtual: do_delete

Since glibmm 2.20:

Returns:
  `true` if appinfo has been deleted.

bool Gio::AppInfo::equal | ( | const Glib::RefPtr< AppInfo >& | other | ) | const

Checks if two AppInfos are equal.

Parameters:

  appinfo2 | The second AppInfo.

Returns:
  `true` if appinfo1 is equal to appinfo2. `false` otherwise.

static Glib::ListHandle<Glib::RefPtr<AppInfo> > Gio::AppInfo::get_all | ( |  | ) | `[static]`

Gets a list of all of the applications currently registered on this system.

For desktop files, this includes applications that have `NoDisplay=true` set or are excluded from display by means of `OnlyShowIn` or `NotShowIn`. See g_app_info_should_show(). The returned list does not include applications which have the `Hidden` key set.

Returns:
  A newly allocated List of references to AppInfos.

static Glib::ListHandle<Glib::RefPtr<AppInfo> > Gio::AppInfo::get_all_for_type | ( | const std::string & | content_type | ) | `[static]`

Gets a list of all AppInfos for a given content type.

Parameters:

  content_type | The content type to find a AppInfo for.

Returns:
  List of AppInfos for given content_type or `0` on error.

std::string Gio::AppInfo::get_commandline | ( |  | ) | const

Gets the commandline with which the application will be started.

Since glibmm 2.20:

Returns:
  A string containing the appinfo's commandline, or `0` if this information is not available.

static Glib::RefPtr<AppInfo> Gio::AppInfo::get_default_for_type | ( | const std::string & | content_type,
|  | bool | must_support_uris = `true`
| ) |  | `[static]`

Gets the AppInfo that corresponds to a given content type.

Parameters:

  content_type | The content type to find a AppInfo for.
  must_support_uris | If `true`, the AppInfo is expected to support URIs.

Returns:
  AppInfo for given content_type or `0` on error.

static Glib::RefPtr<AppInfo> Gio::AppInfo::get_default_for_uri_scheme | ( | const std::string & | uri_scheme | ) | `[static]`

Gets the default application for launching applications using this URI scheme.

A URI scheme is the initial part of the URI, up to but not including the ':', e.g. "http", "ftp" or "sip".

Parameters:

  uri_scheme | A string containing a URI scheme.

Returns:
  AppInfo for given uri_scheme or `0` on error.

std::string Gio::AppInfo::get_description | ( |  | ) | const

Gets a human-readable description of an installed application.

Returns:
  A string containing a description of the application appinfo, or `0` if none.

std::string Gio::AppInfo::get_executable | ( |  | ) | const

Gets the executable's name for the installed application.

Returns:
  A string containing the appinfo's application binaries name.

const Glib::RefPtr<const Icon> Gio::AppInfo::get_icon | ( |  | ) | const

Gets the icon for the application.

Returns:
  The default Icon for appinfo.

Glib::RefPtr<Icon> Gio::AppInfo::get_icon | ( |  | ) |

Gets the icon for the application.

Returns:
  The default Icon for appinfo.

std::string Gio::AppInfo::get_id | ( |  | ) | const

Gets the ID of an application.

An id is a string that identifies the application. The exact format of the id is platform dependent. For instance, on Unix this is the desktop file id from the xdg menu specification.

Note that the returned ID may be `0`, depending on how the appinfo has been constructed.

Returns:
  A string containing the application's ID.

std::string Gio::AppInfo::get_name | ( |  | ) | const

Gets the installed name of the application.

Returns:
  The name of the application for appinfo.

GAppInfo* Gio::AppInfo::gobj | ( |  | ) | `[inline]`

Provides access to the underlying C GObject.

Reimplemented from Glib::Interface.

Reimplemented in Gio::DesktopAppInfo.

const GAppInfo* Gio::AppInfo::gobj | ( |  | ) | const`[inline]`

Provides access to the underlying C GObject.

Reimplemented from Glib::Interface.

Reimplemented in Gio::DesktopAppInfo.

bool Gio::AppInfo::launch | ( | const Glib::ListHandle< std::string >& | files,
|  | const Glib::RefPtr< AppLaunchContext >& | launch_context
| ) |  |

Launches the application.

Passes files to the launched application as arguments, using the optional launch_context to get information about the details of the launcher (like what screen it is on). On error, error will be set accordingly.

To launch the application without arguments pass a `0` files list.

Note that even if the launch is successful the application launched can fail to start if it runs into problems during startup. There is no way to detect this.

Some URIs can be changed when passed through a GFile (for instance unsupported uris with strange formats like mailto:), so if you have a textual uri you want to pass in as argument, consider using g_app_info_launch_uris() instead.

On UNIX, this function sets the <envar>GIO_LAUNCHED_DESKTOP_FILE</envar> environment variable with the path of the launched desktop file and <envar>GIO_LAUNCHED_DESKTOP_FILE_PID</envar> to the process id of the launched process. This can be used to ignore <envar>GIO_LAUNCHED_DESKTOP_FILE</envar>, should it be inherited by further processes. The <envar>DISPLAY</envar> and <envar>DESKTOP_STARTUP_ID</envar> environment variables are also set, based on information provided in launch_context.

Parameters:

  files | A List of File objects.
  launch_context | A AppLaunchContext or `0`.

Returns:
  `true` on successful launch, `false` otherwise.

static bool Gio::AppInfo::launch_default_for_uri | ( | const std::string & | uri | ) | `[static]`

static bool Gio::AppInfo::launch_default_for_uri | ( | const std::string & | uri,
|  | const Glib::RefPtr< AppLaunchContext >& | context
| ) |  | `[static]`

Utility function that launches the default application registered to handle the specified uri.

Synchronous I/O is done on the uri to detect the type of the file if required.

Parameters:

  uri | The uri to show.
  launch_context | An optional AppLaunchContext.

Returns:
  `true` on success, `false` on error.

bool Gio::AppInfo::launch_uris | ( | const Glib::ListHandle< std::string >& | uris,
|  | GAppLaunchContext * | launch_context
| ) |  |

Launches the application.

Passes uris to the launched application as arguments, using the optional launch_context to get information about the details of the launcher (like what screen it is on). On error, error will be set accordingly.

To lauch the application without arguments pass a `0` uris list.

Note that even if the launch is successful the application launched can fail to start if it runs into problems during startup. There is no way to detect this.

Parameters:

  uris | A List containing URIs to launch.
  launch_context | A AppLaunchContext or `0`.

Returns:
  `true` on successful launch, `false` otherwise.

bool Gio::AppInfo::remove_supports_type | ( | const std::string & | content_type | ) |

Removes a supported type from an application, if possible.

Parameters:

  content_type | A string.

Returns:
  `true` on success, `false` on error.

static void Gio::AppInfo::reset_type_associations | ( | const std::string & | content_type | ) | `[static]`

Removes all changes to the type associations done by g_app_info_set_as_default_for_type(), g_app_info_set_as_default_for_extension(), g_app_info_add_supports_type() or g_app_info_remove_supports_type().

Since glibmm 2.20:

Parameters:

  content_type | A content type.

bool Gio::AppInfo::set_as_default_for_extension | ( | const std::string & | extension | ) |

Sets the application as the default handler for the given file extension.

Parameters:

  extension | A string containing the file extension (without the dot).

Returns:
  `true` on success, `false` on error.

bool Gio::AppInfo::set_as_default_for_type | ( | const std::string & | content_type | ) |

Sets the application as the default handler for a given type.

Parameters:

  content_type | The content type.

Returns:
  `true` on success, `false` on error.

bool Gio::AppInfo::should_show | ( |  | ) | const

Checks if the application info should be shown in menus that list available applications.

Returns:
  `true` if the appinfo should be shown, `false` otherwise.

bool Gio::AppInfo::supports_files | ( |  | ) | const

Checks if the application accepts files as arguments.

Returns:
  `true` if the appinfo supports files.

bool Gio::AppInfo::supports_uris | ( |  | ) | const

Checks if the application supports reading files and directories from URIs.

Returns:
  `true` if the appinfo supports URIs.

## Friends And Related Function Documentation

Glib::RefPtr< Gio::AppInfo > wrap | ( | GAppInfo * | object,
|  | bool | take_copy = `false`
| ) |  | `[related]`

A Glib::wrap() method for this object.

Parameters:

  object | The C instance.
  take_copy | False if the result should take ownership of the C instance. True if it should take a new copy or ref.

Returns:
  A C++ instance that wraps this C instance.