calling com port under win7 with old 261 built app

[Dar Scott]

On Sep 21, 2010, at 2:23 PM, Jeff Reynolds wrote:

> i have an old app made from rev 2.6.1 that calls the serial port.  
> been running for years under xp, but the client just tried it on a  
> new win7 box and it doesnt look like anything is making it out the  
> serial port on the new machine. he confirmed the device driver  
> shows the single com port on the machine is set up as com1 and he  
> has changed the pref on my app to com 1 (i had that built in  
> there). does win 7 do something different that an older rev would  
> not do to call the serial port? do i need to rebuild the app in a  
> later version of rev to create a win7 app that will call the com  
> port on win7?

Did he change RS232 cables?  Did he move to a USB-serial adaptor?

Perhaps there is a handshaking issue.

Dar Scott