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From: peterc@Sugar.NeoSoft.com (Peter Creath)
Newsgroups: comp.sys.mac.programmer
Subject: Re: Reading Serial Port : Think C
Summary: SerGetBuf(short InputRef,long &count);
Message-ID: <1991Jun28.231627.4095@Sugar.NeoSoft.com>
Date: 28 Jun 91 23:16:27 GMT
References: <11434@bunny.GTE.COM>
Organization: Sugar Land Unix -- Houston, TX
Lines: 10

You're right.  FSRead does wait.  You need to do a SerGetBuf call to get
the # of bytes in the buffer.
 
SerGetBuf(portInRef,&in);
 
portInRef would be "AinRefNum" from your sample code, and &in would be
"&count".  portInRef is a short int, and "in" is a long int.


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