Scott, Thanks for the response.
Yes. My company manufactures a variety of instruments that communicate solely with serial. We have been using NI-VISA and are happy with it, but NI-VISA requires an installation that is often larger than the application we supply to our customers, and there are licensing restrictions for distribution. I was hoping to develop our own serial functions in a much smaller package than NI-VISA. This is why I am interested in using the Windows API. NI-VISA with its support for so many kinds of instruments seems like overkill for our application. When the customer installs the NI-VISA driver they end up installing features to support GPIB etc. that are not needed for our application. Allen -----Original Message----- From: Scott Hannahs [mailto:[EMAIL PROTECTED] Sent: Monday, March 08, 2004 6:14 PM To: [EMAIL PROTECTED]; [EMAIL PROTECTED] Subject: Re: API Serial Functions At 4:27 PM -0800 3/8/04, C. Allen Weekley wrote: >Has anyone written VI's to perform serial I/O using functions in >kernel32.dll? Allen, Why re-invent the wheel? Actually the people who did this are the people who wrote the VISA library. Any reason not to use their work? -Scott