How to get the configured subnet mask for this machine?

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From: Mike Knoblock
Date: Wed, 12 Apr 2006 21:41

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Anyone know how to use WINAPI to retrieve the subnet mask for a given 
interface?  I can programmatically retrieve a list of IP addresses with 
gethostbyname, but this doesn't deal with configured subnets.

What's behind all this is I need an application to send a subnet 
broadcast message on startup to find other instances of itself. Running 
IPCONFIG from a shell is messy, and I can't find anything on MSDN.

TIA

Mike

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Date: Wed, 12 Apr 2006 14:41:53 -0700
From: Mike Knoblock <mknoblock@gmail.com>
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Subject: How to get the configured subnet mask for this machine?
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