static extern IntPtr IcmpCreateFile();

Declare Function IcmpCreateFile Lib "icmp.dll" () As IntPtr

        private static extern IntPtr IcmpCreateFile();

            IntPtr icmpHandle = IcmpCreateFile();

HANDLE WINAPI IcmpCreateFile(VOID);

    HANDLE hIcmpFile = IcmpCreateFile();

        printf("IcmpCreatefile returned error: %ld\n", GetLastError());