you should take a look at this: http://msdn.microsoft.com/en-us/libr...15(VS.85).aspx.

You can use WinAPI code in a Qt application without problems.
PIP_ADAPTER_ADDRESSES is a pointer to IP_ADAPTER_ADDRESSES...maybe you don;t have that defined.

Anyway, QNetworkInterface already contains the support for getting all the interfaces, although it does not seem to return their friendly names on Windows. For this purpose you can use GetAdaptersAddresses.