Frequently Asked Questions on Virtual Currency and CFTC Jurisdiction
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A GApplication is the foundation of an application. It wraps some primarer handel mit optionen und futures platform-specific services and is intended to act as the foundation for higher-level application classes such as GtkApplication or MxApplication.
In general, you should not use this class outside of a higher level framework. GApplication provides convenient life cycle management by maintaining a "use count" for the primary application instance. If it drops to zero, the application exits.
Higher-level classes such as GtkApplication employ the use count to ensure that the application stays alive as long as it has any opened windows. Another feature that GApplication optionally provides is process uniqueness. Applications can make use of this primarer handel mit optionen und futures by providing a unique application ID.
If given, only one application with this ID can be running at a time per session. The session concept is platform-dependent, but corresponds roughly to a graphical desktop login. When your application is launched again, its arguments are passed through platform communication to the already running program.
The already running instance of the program is called the "primary instance"; for non-unique applications this is the always the current instance. On Linux, the D-Bus session bus is used for communication.
The use of GApplication differs from some other commonly-used uniqueness libraries such as libunique in important ways. The application is not expected to manually register itself and check if it is the primary instance. Primarer handel mit optionen und futures checks for uniqueness are done internally.
If the application is the primary instance then the startup signal is emitted and primarer handel mit optionen und futures mainloop runs. Primarer handel mit optionen und futures the code examples primarer handel mit optionen und futures. If used, the expected form of an application identifier is very close to that of of a D-Bus bus name. On Linux, the application identifier is claimed as a well-known bus name on the user's session bus.
This means that the uniqueness of your application is scoped to the current session. It also means that your application may provide additional services through registration of other object paths at that bus name. The registration of these object paths should be done with the shared GDBus session bus. Note that due to the internal architecture of GDBus, method calls can be dispatched at any time even if a main loop is not running.
Regardless of which of these entry points is used to start the application, GApplication passes some "platform data from the launching instance to the primary instance, in the form of a GVariant dictionary mapping strings to variants. As the name indicates, the platform data may vary depending on the operating system, but it always includes the current directory key "cwd"and optionally the environment ie the set of environment variables and their values of the calling process key "environ".
For instance, GtkApplication adds startup notification data in this way. For an example of opening files with a GApplication, see gapplication-example-open. For an example of using actions with GApplication, see gapplication-example-actions. For an example of using extra D-Bus hooks with GApplication, see gapplication-example-dbushooks.
Application identifiers must contain at least one '. Creates a new GApplication instance. If non- NULLthe application id must be valid. If no application ID is given then some features of GApplication most notably application uniqueness will be disabled. The application id can only be modified if application has not yet been registered.
This call has no side effects of its own. Any timeouts currently in progress are not impacted. The flags can only be modified if application has not yet been registered. The path is used to automatically load various application resources such as menu layouts and action descriptions. The various types of resources will be found at fixed names relative to the given base path.
This is done at the time that the GApplication object is constructed. Changes to the application ID after that point will not have an impact on the resource base path. As an example, if the application has an ID of "org. See GResource for more information about adding resources to your application. You can disable automatic resource loading functionality by setting the path to NULL. Changing the resource base path once the application is running is not recommended.
The point at which the resource path is consulted for forming paths for various purposes is unspecified. Alternatively, you can call this function in the GApplicationClass. If GApplication is using its D-Bus backend then this function will return the GDBusConnection being used for uniqueness and communication with the desktop environment and other instances of the application.
This includes the situation where the D-Bus backend would normally be in use but we were unable to connect to the bus. This function must not be called before the application has been registered. If the application is the primary instance then there is an object published at this path.
If the application is not the primary instance then the result of this function is undefined. Use the GActionMap interface instead. This function is known to introduce buggy behaviour ie: This used to be how actions were associated with a GApplication.
Now there is GActionMap for that. TRUE if application is registered. If application is remote then it means that another instance of application already exists the 'primary' instance. Calls to perform actions on application will result in the actions being performed by the primary instance. TRUE if application is remote. This is the point at which the application discovers if it is the primary instance primarer handel mit optionen und futures merely acting as a remote for an already-existing primary instance.
This is implemented by attempting to acquire the application primarer handel mit optionen und futures as a unique bus name on the session bus using GDBus. Due to the internal architecture of GDBus, method calls can be dispatched at any time even if a main loop is not running.
For this reason, you must ensure that any object paths that you wish to register are registered before calling primarer handel mit optionen und futures function. If the application has already been registered then TRUE is returned with no work performed. In the event of an error such as cancellable being cancelled, or a failure to connect to the session busFALSE is returned and error is set appropriately.
TRUE if registration succeeded. Use this function to indicate that the application has a reason to continue to run. The hold count is ignored. It is intended to be used by applications that have multiple modes for opening files eg: Unless you have a need for this functionality, you should use "". Sends a notification on behalf of application to the desktop shell.
There is no guarantee that the notification is displayed immediately, or even at all. Notifications may persist after the application primarer handel mit optionen und futures.
It will be D-Bus-activated when the notification or one of its actions is activated. Modifying notification after this call has no effect. However, the object can be reused for a later call to this function. It does not need to be in any special format. For example, "new-message" might be appropriate for a notification about new messages.
If a previous notification was sent with the same idit will be replaced with notification and shown primarer handel mit optionen und futures as if it was a new notification. This works even for notifications sent from a previous execution of the application, as long as id is the same string.
This call does nothing if a notification with id doesn't exist or the notification was never sent. This function works even for notifications sent in previous executions of this application, as long id is the same as it was for the sent notification.
Note that notifications are dismissed when the user clicks on one of the buttons in a notification or triggers its default action, so there is no need to explicitly withdraw the notification in that case. This function is intended to be run from main and its return value is intended to be returned by main. Although you are expected to pass the argcargv parameters from main to this function, it is possible to pass NULL if argv is not available or commandline handling is not required.
GApplication will attempt to parse the commandline arguments. What happens next depends on the flags: Otherwise, the remaining commandline arguments are assumed to be a list of files. If, after the above is done, the use count of the application is zero then the exit status is returned immediately. If the use count is non-zero then the default main context is iterated until the use count falls to zero, at which point 0 is returned.
This provides a primarer handel mit optionen und futures solution whereby running an application directly from the commandline will invoke it in the normal way which can be useful for debugging while still allowing applications to be D-Bus activated in service mode.
The D-Bus service file should invoke the executable with "--gapplication-service" as the sole commandline argument. This approach is suitable for use by most graphical applications but should not be used from applications like editors that need precise control over when processes invoked via the commandline will exit and what their exit status will be.
This "packing" is done according to the type of the argument -- booleans for normal flags, strings for strings, bytestrings for filenames, etc. The packing only occurs if the flag is given ie: In general, it is recommended that all commandline arguments are parsed locally. This function is new in GLib 2.