Hi Mguo,
Are you sure it can be done on the Treo? I've been through the phonelib headers a number of times and I don't recall ever seeing an API function for that. That being said, I've been wrong way more times than I'll ever admit, so please share with us if you know how to do it. =)
I think it's done using the NetMaster APIs on the Treo 600/650 -- look into that, rather than looking at the phone library.
-- Ben Combee, Senior Software Engineer, palmOne, Inc. "Combee on Palm OS" weblog: http://palmos.combee.net/ Developer Forum Archives: http://news.palmos.com/read/all_forums/
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