GetFriendlyIfIndex

The GetFriendlyIfIndex function takes an interface index and returns a backward-compatible interface index, that is, one that uses only the lower 24 bits.

DWORD GetFriendlyIfIndex(
  DWORD IfIndex    // interface index
);

Parameters

IfIndex

Specifies an interface index from which the backward-compatible or "friendly" interface index is derived.

Return Values

If the function succeeds, the return value is NO_ERROR.

If the function fails, use FormatMessage to obtain the message string for the returned error.

Requirements

  Windows NT/2000: Requires Windows NT 4.0 SP4 or later.
  Windows 95/98: Requires Windows 98.
  Header: Declared in Iphlpapi.h.
  Library: Use Iphlpapi.lib.

See Also

GetIfEntry, MIB_IFROW