Creates a new device-changed message. The device-changed message is produced by #GstDeviceProvider or a #GstDeviceMonitor. They announce that a device properties has changed and device represent the new modified version of changed_device.
The #GstObject that created the message
The newly created device representing changed_device with its new configuration.
The old version of the device.
a newly allocated #GstMessage
Creates a new device-changed message. The device-changed message is produced by #GstDeviceProvider or a #GstDeviceMonitor. They announce that a device properties has changed and device represent the new modified version of changed_device.