Get default gateway using Delphi

Question

Does anyone know how to get the default gateway in a Delphi 2010 app? I have found some windows functions like GetAdaptersAddresses, but I dont know how to use it.

Answer 1

On Windows XP and later Use the GetAdaptersAddresses instead of GetAdaptersInfo.
There is a set of functions implementing IP Helper APIs. see the delphi web page at Magenta Systems

Edit:
from Remok comment : GetAdaptersInfo returns ERROR_NO_DATA if there is ONLY an IPv6 address configured. That's why MSDN recommends using GetAdapterAddresses.