IDS peak 2.15.0 / uEye+ firmware 3.54

// register DeviceFound callback
auto callbackHandle = deviceManager.RegisterDeviceFoundCallback([](const std::shared_ptr<peak::core::DeviceDescriptor>& foundDevice)
{
  std::cout << "DeviceFound: " << foundDevice->DisplayName() << std::endl;
});
 
// unregister DeviceFound callback
deviceManager.UnregisterDeviceFoundCallback(callbackHandle);

// define DeviceFound callback
static void DeviceFoundDelegate(object o, DeviceDescriptor dev)
{
  Console.WriteLine("C# static function DeviceFound: {0}", dev.DisplayName());
}
...
// register DeviceFound callback
deviceManager.DeviceFoundEvent += DeviceFoundDelegate;
 
// unregister DeviceFound callback
deviceManager.DeviceFoundEvent -= DeviceFoundDelegate;