Sets our main struct and passes it to the parent class
Finishes creating a GDBusProxy. Since 2.26
Creates a proxy for accessing interface_name on the remote object at object_path owned by name at connection and synchronously loads D-Bus properties unless the G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES flag is used. If the G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS flag is not set, also sets up match rules for signals. Connect to the "g-signal" signal to handle signals from the remote object. If name is a well-known name and the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag isn't set and no name owner currently exists, the message bus will be requested to launch a name owner for the name. This is a synchronous failable constructor. See g_dbus_proxy_new() and g_dbus_proxy_new_finish() for the asynchronous version. See Example 10, “GDBusProxy for a well-known-name” for an example of how GDBusProxy can be used. Since 2.26
Like g_dbus_proxy_new_sync() but takes a GBusType instead of a GDBusConnection. See Example 10, “GDBusProxy for a well-known-name” for an example of how GDBusProxy can be used. Since 2.26
Emitted when one or more D-Bus properties on proxy changes. The local cache has already been updated when this signal fires. Note that both changed_properties and invalidated_properties are guaranteed to never be NULL (either may be empty though). This signal corresponds to the PropertiesChanged D-Bus signal on the org.freedesktop.DBus.Properties interface. Since 2.26
Emitted when a signal from the remote object and interface that proxy is for, has been received. Since 2.26
Asynchronously invokes the method_name method on proxy. If method_name contains any dots, then name is split into interface and method name parts. This allows using proxy for invoking methods on other interfaces. If the GDBusConnection associated with proxy is closed then the operation will fail with G_IO_ERROR_CLOSED. If cancellable is canceled, the operation will fail with G_IO_ERROR_CANCELLED. If parameters contains a value not compatible with the D-Bus protocol, the operation fails with G_IO_ERROR_INVALID_ARGUMENT. If the parameters GVariant is floating, it is consumed. This allows Since 2.26
Finishes an operation started with g_dbus_proxy_call(). Since 2.26
Synchronously invokes the method_name method on proxy. If method_name contains any dots, then name is split into interface and method name parts. This allows using proxy for invoking methods on other interfaces. If the GDBusConnection associated with proxy is disconnected then the operation will fail with G_IO_ERROR_CLOSED. If cancellable is canceled, the operation will fail with G_IO_ERROR_CANCELLED. If parameters contains a value not compatible with the D-Bus protocol, the operation fails with G_IO_ERROR_INVALID_ARGUMENT. If the parameters GVariant is floating, it is consumed. This allows Since 2.26
Looks up the value for a property from the cache. This call does no blocking IO. If proxy has an expected interface (see "g-interface-info"), then property_name (for existence) is checked against it. Since 2.26
Gets the names of all cached properties on proxy. Since 2.26
Gets the connection proxy is for. Since 2.26
Gets the timeout to use if -1 (specifying default timeout) is passed as timeout_msec in the g_dbus_proxy_call() and g_dbus_proxy_call_sync() functions. See the "g-default-timeout" property for more details. Since 2.26
Gets the flags that proxy was constructed with. Since 2.26
Returns the GDBusInterfaceInfo, if any, specifying the minimal interface that proxy conforms to. See the "g-interface-info" property for more details. Since 2.26
Gets the D-Bus interface name proxy is for. Since 2.26
Gets the name that proxy was constructed for. Since 2.26
The unique name that owns the name that proxy is for or NULL if no-one currently owns that name. You may connect to the "notify" signal to track changes to the "g-name-owner" property. Since 2.26
Gets the object path proxy is for. Since 2.26
the main Gtk struct as a void*
If value is not NULL, sets the cached value for the property with name property_name to the value in value. If value is NULL, then the cached value is removed from the property cache. If proxy has an expected interface (see "g-interface-info"), then property_name (for existence) and value (for the type) is checked against it. If the value GVariant is floating, it is consumed. This allows convenient 'inline' use of g_variant_new(), e.g. Normally you will not need to use this method since proxy is tracking changes using the org.freedesktop.DBus.Properties.PropertiesChanged D-Bus signal. However, for performance reasons an object may decide to not use this signal for some properties and instead use a proprietary out-of-band mechanism to transmit changes. As a concrete example, consider an object with a property ChatroomParticipants which is an array of strings. Instead of transmitting the same (long) array every time the property changes, it is more efficient to only transmit the delta using e.g. signals ChatroomParticipantJoined(String name) and ChatroomParticipantParted(String name). Since 2.26
Sets the timeout to use if -1 (specifying default timeout) is passed as timeout_msec in the g_dbus_proxy_call() and g_dbus_proxy_call_sync() functions. See the "g-default-timeout" property for more details. Since 2.26
Ensure that interactions with proxy conform to the given interface. For example, when completing a method call, if the type signature of the message isn't what's expected, the given GError is set. Signals that have a type signature mismatch are simply dropped. See the "g-interface-info" property for more details. Since 2.26
Creates a proxy for accessing interface_name on the remote object at object_path owned by name at connection and asynchronously loads D-Bus properties unless the G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES flag is used. Connect to the "g-properties-changed" signal to get notified about property changes. If the G_DBUS_PROXY_FLAGS_DO_NOT_CONNECT_SIGNALS flag is not set, also sets up match rules for signals. Connect to the "g-signal" signal to handle signals from the remote object. If name is a well-known name and the G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START flag isn't set and no name owner currently exists, the message bus will be requested to launch a name owner for the name. This is a failable asynchronous constructor - when the proxy is ready, callback will be invoked and you can use g_dbus_proxy_new_finish() to get the result. See g_dbus_proxy_new_sync() and for a synchronous version of this constructor. See Example 10, “GDBusProxy for a well-known-name” for an example of how GDBusProxy can be used. Since 2.26
Like g_dbus_proxy_new() but takes a GBusType instead of a GDBusConnection. See Example 10, “GDBusProxy for a well-known-name” for an example of how GDBusProxy can be used. Since 2.26
the main Gtk struct
the main Gtk struct
the main Gtk struct as a void*
Gets a D Object from the objects table of associations.
The notify signal is emitted on an object when one of its properties has been changed. Note that getting this signal doesn't guarantee that the value of the property has actually changed, it may also be emitted when the setter for the property is called to reinstate the previous value. This signal is typically used to obtain change notification for a single property, by specifying the property name as a detail in the It is important to note that you must use canonical parameter names as detail strings for the notify signal. See Also GParamSpecObject, g_param_spec_object()
Installs a new property. This is usually done in the class initializer. Note that it is possible to redefine a property in a derived class, by installing a property with the same name. This can be useful at times, e.g. to change the range of allowed values or the default value.
Installs new properties from an array of GParamSpecs. This is usually done in the class initializer. The property id of each property is the index of each GParamSpec in the pspecs array. The property id of 0 is treated specially by GObject and it should not be used to store a GParamSpec. This function should be used if you plan to use a static array of GParamSpecs and g_object_notify_by_pspec(). For instance, this Since 2.26
Looks up the GParamSpec for a property of a class.
Get an array of GParamSpec* for all properties of a class.
Registers property_id as referring to a property with the name name in a parent class or in an interface implemented by oclass. This allows this class to override a property implementation in a parent class or to provide the implementation of a property from an interface. Note Internally, overriding is implemented by creating a property of type GParamSpecOverride; generally operations that query the properties of the object class, such as g_object_class_find_property() or g_object_class_list_properties() will return the overridden property. However, in one case, the construct_properties argument of the constructor virtual function, the GParamSpecOverride is passed instead, so that the param_id field of the GParamSpec will be correct. For virtually all uses, this makes no difference. If you need to get the overridden property, you can call g_param_spec_get_redirect_target(). Since 2.4
Add a property to an interface; this is only useful for interfaces that are added to GObject-derived types. Adding a property to an interface forces all objects classes with that interface to have a compatible property. The compatible property could be a newly created GParamSpec, but normally g_object_class_override_property() will be used so that the object class only needs to provide an implementation and inherits the property description, default value, bounds, and so forth from the interface property. This function is meant to be called from the interface's default vtable initialization function (the class_init member of GTypeInfo.) It must not be called after after class_init has been called for any object types implementing this interface. Since 2.4
Find the GParamSpec with the given name for an interface. Generally, the interface vtable passed in as g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek(). Since 2.4
Lists the properties of an interface.Generally, the interface vtable passed in as g_iface will be the default vtable from g_type_default_interface_ref(), or, if you know the interface has already been loaded, g_type_default_interface_peek(). Since 2.4
Increases the reference count of object.
Decreases the reference count of object. When its reference count drops to 0, the object is finalized (i.e. its memory is freed).
Increase the reference count of object, and possibly remove the floating reference, if object has a floating reference. In other words, if the object is floating, then this call "assumes ownership" of the floating reference, converting it to a normal reference by clearing the floating flag while leaving the reference count unchanged. If the object is not floating, then this call adds a new normal reference increasing the reference count by one. Since 2.10
Clears a reference to a GObject. object_ptr must not be NULL. If the reference is NULL then this function does nothing. Otherwise, the reference count of the object is decreased and the pointer is set to NULL. This function is threadsafe and modifies the pointer atomically, using memory barriers where needed. A macro is also included that allows this function to be used without pointer casts. Since 2.28
Checks whether object has a floating reference. Since 2.10
This function is intended for GObject implementations to re-enforce a floating object reference. Doing this is seldomly required: all GInitiallyUnowneds are created with a floating reference which usually just needs to be sunken by calling g_object_ref_sink(). Since 2.10
Adds a weak reference callback to an object. Weak references are used for notification when an object is finalized. They are called "weak references" because they allow you to safely hold a pointer to an object without calling g_object_ref() (g_object_ref() adds a strong reference, that is, forces the object to stay alive).
Removes a weak reference callback to an object.
Adds a weak reference from weak_pointer to object to indicate that the pointer located at weak_pointer_location is only valid during the lifetime of object. When the object is finalized, weak_pointer will be set to NULL.
Removes a weak reference from object that was previously added using g_object_add_weak_pointer(). The weak_pointer_location has to match the one used with g_object_add_weak_pointer().
Increases the reference count of the object by one and sets a callback to be called when all other references to the object are dropped, or when this is already the last reference to the object and another reference is established. This functionality is intended for binding object to a proxy object managed by another memory manager. This is done with two paired references: the strong reference added by g_object_add_toggle_ref() and a reverse reference to the proxy object which is either a strong reference or weak reference. The setup is that when there are no other references to object, only a weak reference is held in the reverse direction from object to the proxy object, but when there are other references held to object, a strong reference is held. The notify callback is called when the reference from object to the proxy object should be toggled from strong to weak (is_last_ref true) or weak to strong (is_last_ref false). Since a (normal) reference must be held to the object before calling g_object_toggle_ref(), the initial state of the reverse link is always strong. Multiple toggle references may be added to the same gobject, however if there are multiple toggle references to an object, none of them will ever be notified until all but one are removed. For this reason, you should only ever use a toggle reference if there is important state in the proxy object. Since 2.8
Removes a reference added with g_object_add_toggle_ref(). The reference count of the object is decreased by one. Since 2.8
Emits a "notify" signal for the property property_name on object. When possible, eg. when signaling a property change from within the class that registered the property, you should use g_object_notify_by_pspec() instead.
Emits a "notify" signal for the property specified by pspec on object. This function omits the property name lookup, hence it is faster than g_object_notify(). One way to avoid using g_object_notify() from within the class that registered the properties, and using g_object_notify_by_pspec() instead, is to store the GParamSpec used with Since 2.26
Increases the freeze count on object. If the freeze count is non-zero, the emission of "notify" signals on object is stopped. The signals are queued until the freeze count is decreased to zero. This is necessary for accessors that modify multiple properties to prevent premature notification while the object is still being modified.
Reverts the effect of a previous call to g_object_freeze_notify(). The freeze count is decreased on object and when it reaches zero, all queued "notify" signals are emitted. It is an error to call this function when the freeze count is zero.
Gets a named field from the objects table of associations (see g_object_set_data()).
Each object carries around a table of associations from strings to pointers. This function lets you set an association. If the object already had an association with that name, the old association will be destroyed.
Like g_object_set_data() except it adds notification for when the association is destroyed, either by setting it to a different value or when the object is destroyed. Note that the destroy callback is not called if data is NULL.
Remove a specified datum from the object's data associations, without invoking the association's destroy handler.
This function gets back user data pointers stored via g_object_set_qdata().
This sets an opaque, named pointer on an object. The name is specified through a GQuark (retrived e.g. via g_quark_from_static_string()), and the pointer can be gotten back from the object with g_object_get_qdata() until the object is finalized. Setting a previously set user data pointer, overrides (frees) the old pointer set, using NULL as pointer essentially removes the data stored.
This function works like g_object_set_qdata(), but in addition, a void (*destroy) (gpointer) function may be specified which is called with data as argument when the object is finalized, or the data is being overwritten by a call to g_object_set_qdata() with the same quark.
This function gets back user data pointers stored via g_object_set_qdata() and removes the data from object without invoking its destroy() function (if any was set). Usually, calling this function is only required to update
Sets a property on an object.
Gets a property of an object. value must have been initialized to the expected type of the property (or a type to which the expected type can be transformed) using g_value_init(). In general, a copy is made of the property contents and the caller is responsible for freeing the memory by calling g_value_unset(). Note that g_object_get_property() is really intended for language bindings, g_object_get() is much more convenient for C programming.
Sets properties on an object.
Gets properties of an object. In general, a copy is made of the property contents and the caller is responsible for freeing the memory in the appropriate manner for the type, for instance by calling g_free() or g_object_unref(). See g_object_get().
This function essentially limits the life time of the closure to the life time of the object. That is, when the object is finalized, the closure is invalidated by calling g_closure_invalidate() on it, in order to prevent invocations of the closure with a finalized (nonexisting) object. Also, g_object_ref() and g_object_unref() are added as marshal guards to the closure, to ensure that an extra reference count is held on object during invocation of the closure. Usually, this function will be called on closures that use this object as closure data.
Releases all references to other objects. This can be used to break reference cycles. This functions should only be called from object system implementations.
Description GDBusProxy is a base class used for proxies to access a D-Bus interface on a remote object. A GDBusProxy can be constructed for both well-known and unique names. By default, GDBusProxy will cache all properties (and listen to changes) of the remote object, and proxy all signals that gets emitted. This behaviour can be changed by passing suitable GDBusProxyFlags when the proxy is created. If the proxy is for a well-known name, the property cache is flushed when the name owner vanishes and reloaded when a name owner appears. If a GDBusProxy is used for a well-known name, the owner of the name is tracked and can be read from "g-name-owner". Connect to the "notify" signal to get notified of changes. Additionally, only signals and property changes emitted from the current name owner are considered and calls are always sent to the current name owner. This avoids a number of race conditions when the name is lost by one owner and claimed by another. However, if no name owner currently exists, then calls will be sent to the well-known name which may result in the message bus launching an owner (unless G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START is set). The generic "g-properties-changed" and "g-signal" signals are not very convenient to work with. Therefore, the recommended way of working with proxies is to subclass GDBusProxy, and have more natural properties and signals in your derived class. See Example 19, “GDBusProxy subclass example” for an example.