SignalActionRun Firstcontent-SignalDetailedActionRun FirstnotifyThe notify signal is emitted on an object when one of its properties has
its value set through g_object_set_property(), g_object_set(), et al.
Note that getting this signal doesn’t itself guarantee that the value of
the property has actually changed. When it is emitted is determined by the
derived GObject class. If the implementor did not create the property with
GObject.ParamFlags.EXPLICIT_NOTIFY, then any call to g_object_set_property() results
in ::notify being emitted, even if the new value is the same as the old.
If they did pass GObject.ParamFlags.EXPLICIT_NOTIFY, then this signal is emitted only
when they explicitly call g_object_notify() or g_object_notify_by_pspec(),
and common practice is to do that only when the value has actually changed.
This signal is typically used to obtain change notification for a
single property, by specifying the property name as a detail in the
g_signal_connect() call, like this:
g_signal_connect (text_view->buffer, "notify::paste-target-list",
G_CALLBACK (gtk_text_view_target_list_notify),
text_view)
It is important to note that you must use [canonical parameter names][class@GObject.ParamSpec#parameter-names] as detail strings for the notify signal.
Signals that the content in the source has changed.
changed_mediasis the list of elements that have changed. Usually these medias are of type Grl.Media container, meaning that the content of that container has changed.If
location_unknownisTRUEit means the source cannot establish where the change happened: could be either in the container, in any child, or in any other descendant of the container in the hierarchy.Both
change_typeandlocation_unknownare applied to all elements in the list.For the cases where the source can only signal that a change happened, but not where, it would use a list with the the root container (
NULLid) and set location_unknown asTRUE.