>I want to write some data to a datacard machine through communication port,
>I use function FOPEN to open the port
> FOPEN("COM1", 12)
>however, it always returns the value -1. And I can't find any other
>information about
>the communication port in the help file.
>My questions are how to open a COM port in VFP 5 and how to write data to
>it.
>
>Thanks !
Check out the MSComm Active X control. The FOPEN is no longer functional under the 'Visual' version of FoxPro.