Ian,

Not sure what specifically you are wanting to do here however, the first place to look would be in the Windows CE Platform Builder Help file.

For the most part, the serial port is accessed just like any file. This means, you can do a CreateFile, ReadFile, WriteFile, etc. on the COM port. A list of IOCTLs can be found in the Windows Platform Builder Help file under:

Driver Development,
Driver Categories,
Serial Port Drivers,
Reference,
IOCTLs

Please let me know if this helps or if you are looking for something in particular.

Best regards,
--mikee

Thanks,
I'm new to windows programming so I didn't quite get the fact that there was a standard interface. Anyway, I now have the serial port up and running. I found the link below to be really useful

http://msdn.microsoft.com...mp/html/PISAPICF.asp

Thanks
Ian

Ian,

Great! I'm glad that you've had some success. The Platform Builder Help file can be very useful. At times you may have to do some digging to find the information you are looking for, but it's normally worth the effort.

Other good resources are the DejaNews Groups archived by Google.

I usually start by searching:

http://groups.google.com/...indowsce.platbuilder

Best of luck in your future development and don't be afraid to post more questions if you run into a tough spot.

--mikee