How to unbox multivalue string in c++ winrt - c++

Question

I can look for services on the network using
std::vector<hstring> propertyKeys = std::vector<hstring>();
propertyKeys.push_back(L"System.Devices.Dnssd.HostName");
propertyKeys.push_back(L"System.Devices.IpAddress");
hstring aqsQueryString = L"System.Devices.AepService.ProtocolId:={4526e8c1-8aac-4153-9b16-55e86ada0e54} AND System.Devices.Dnssd.ServiceName:=\"_http._tcp\" AND System.Devices.Dnssd.Domain:=\"local\"";
auto watcher = DeviceInformation::CreateWatcher(aqsQueryString, propertyKeys, DeviceInformationKind::AssociationEndpointService);
I then set the Updated callback to get information about services.
watcher.Updated([](DeviceWatcher sender, DeviceInformationUpdate info) {
for(auto const& p : info.Properties()){
hstring s = unbox_value_or<hstring>(p.Value(), L""); // This unboxes the Hostname
auto ips = unbox_value_or<???>(p.Value(), ???); // How do I unbox this?
}
}
According to Microsoft Documentation the System.Devices.IpAddress is of type Multivalue String. I've tried with std::vector<hstring> but that doesn't work as the type must be a winrt type.
What type do I put to unbox a multivalue string?

Answer 1

I managed to solve it using Sean Kellys answer from here: Equivalent of Platform::IBoxArray in C++/WinRT
Specifically my implementation for printing the first IP looks like this:
auto prop = info.Properties();
auto ips = prop.Lookup(L"System.Devices.IpAddress").as<Windows::Foundation::IReferenceArray<hstring>>();
winrt::com_array<hstring> arr;
ips.GetStringArray(arr);
std::wcout << arr[0].c_str() << std::endl;