How to set a the IP-Address of GEV-Camera programmatically in CVB

Programming Questions C++ API
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It has been a wile but as you explicitly asked for C++…

Here is how you can set a static / persistent IP in a camera that is not in your NIC’s subnet with CVB++ (basically what you do with the GenICam Browser)

// discover all your interfaces (NICS & USB HCs)
// currently there is no way to filter out USB HCs
auto interfaceInfoList = Cvb::DeviceFactory::Discover(
      Cvb::DiscoverFlags::IgnoreGevSD | 
      Cvb::DiscoverFlags::IgnoreVins | 
      Cvb::DiscoverFlags::UpToLevelInterface,
      std::chrono::milliseconds(2000));


// Given you know your interface index (GenICam Browser can list them all!)
const int MY_IF = 4;
auto& interfaceInfo = interfaceInfoList[MY_IF];

// Do a broadcast discovery and allow devices from another subnet to answer.
interfaceInfo.SetGenApiFeature(CVB_LIT("TLInterface"), CVB_LIT("Cust::DisableSubnetMatch"), CVB_LIT("1"));
interfaceInfo.SetGenApiFeature(CVB_LIT("TLInterface"), CVB_LIT("Cust::AllowBroadcastDiscoveryResponse"), CVB_LIT("1"));

// Discover again only devices connected to you interface! 
    // Include also devices that are inaccessible (might be because they are in use or in a different subnet)
    Cvb::DeviceFactory::Discover(interfaceInfo,
      Cvb::DiscoverFlags::IgnoreGevSD |
      Cvb::DiscoverFlags::IgnoreVins |
      Cvb::DiscoverFlags::UpToLevelDevice |
      Cvb::DiscoverFlags::IncludeInaccessible,
      std::chrono::milliseconds(2000));
{
auto interfaceDevice = Cvb::DeviceFactory::Open(interfaceInfo.AccessToken());
      auto interfaceNM = interfaceDevice->NodeMap(CVB_LIT("TLInterface"));

      // get all required nodes
      auto deviceUpdateListNode = interfaceNM->Node<Cvb::CommandNode>(CVB_LIT("DeviceUpdateList"));
      auto deviceMacNode = interfaceNM->Node<Cvb::IntegerNode>(CVB_LIT("DeviceMAC"));
      auto cfgIPNode = interfaceNM->Node<Cvb::IntegerNode>(CVB_LIT("IPCfg_IP"));
      auto cfgSubnetNode = interfaceNM->Node<Cvb::IntegerNode>(CVB_LIT("IPCfg_Subnet"));
      auto cfgMacNode = interfaceNM->Node<Cvb::IntegerNode>(CVB_LIT("IPCfg_MAC"));
      auto cfgForceNode = interfaceNM->Node<Cvb::CommandNode>(CVB_LIT("IPCfg_SetForceIP"));
      auto cfgStaticNode = interfaceNM->Node<Cvb::CommandNode>(CVB_LIT("IPCfg_SetStatIP"));

      // make node map aware of the device
      deviceUpdateListNode->Execute();
      // we want to configure the found device
      cfgMacNode->SetValue(deviceMacNode->Value());
      // IP 10.0.0.1 (given that your NIC has a suitable address like 10.0.0.2)
      cfgIPNode->SetValue(0x0A000001);
      // Subnet 255.255.255.0
      cfgSubnetNode->SetValue(0xFFFFFF00);
      // Force the new IP
      cfgForceNode->Execute();
      // make node map aware of new IP
      deviceUpdateListNode->Execute();
      // permanently write the IP to the camera
      cfgStaticNode->Execute();
}

// Done, now you can see in the GC Browser, that the camera is in the same subnet as the NIC
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