Creates a new device-added message. The device-added message is produced by gstreamer.DeviceProvider or a gstreamer.DeviceMonitor They announce the appearance of monitored devices.
The GstObject that created the message
The new gstreamer.Device
Return: a newly allocated gstreamer.Message
ConstructionException GTK+ fails to create the object.
1.4
Creates a new device-added message. The device-added message is produced by gstreamer.DeviceProvider or a gstreamer.DeviceMonitor They announce the appearance of monitored devices.