Gets the GDBusConnection being used by the application, or NULL.
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.
If GApplication is not using D-Bus then this function will return
NULL. 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. See g_application_get_is_registered().
Since 2.34
Gets the GDBusConnection being used by the application, or NULL. 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. If GApplication is not using D-Bus then this function will return NULL. 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. See g_application_get_is_registered(). Since 2.34