Cvb/CppConnectionState

// ---------------------------------------------------------------------------
// ---------------------------------------------------------------------------
 
#include <iostream>
#include <stdio.h>
#include <iostream>
#include <cvb/device_factory.hpp>
 
 
int main()
{
  try
  {
    // open a device
    auto infoList = Cvb::DeviceFactory::Discover(Cvb::DiscoverFlags::IgnoreVins);
    if (infoList.empty())
    {
      std::cout << "no device discovered"<<std::endl;
      return(0);
    }
    auto device = Cvb::DeviceFactory::Open<Cvb::GenICamDevice>(infoList[0].AccessToken(), Cvb::AcquisitionStack::GenTL);
    auto cookie = device->RegisterConnectionStateChangedEvent([]() {
      std::cout << "device was disconnected" << std::endl;
      });
    char endKey;
    std::cout << "you can disconnect the device and get a confirmation message or ending the program by pressing a key."<<std::endl;
    std::cin >> endKey;
  }
  catch (const std::exception& error)
  {
    std::cout << error.what() << std::endl;
  }
  return(0);
}