>>>I want to write data to lpt1 port to control PCU customer display.
>>>The only way to do using vfp native commands is "run copy fn lpt1"
>>>but this is too low for disply control.
>>>
>>>So the only possibility is to use API.
>>
>>Did you try COPY FILE (filename) TO LPT1:
>
>I run (w95 osr2, vfp build 415)
>
>copy file c:\autoexec.bat to lpt1
>
>a message
>
>c:\vfp\lpt1 already exists, overwrite it?
>
> appears
>If i choose Yes, an Invalid seek offset error occurs!
>
>Only
>
>!copy file c:\autoexec.bat to lpt1
>
>works, but this is TOO slow for PCU display and requires lpt1 to be captured.
Hi Andrus,
If you're trying to print plain ASCII such as .prg or .txt you could use :

set headings off
set console off
type myfile.ext to printer [prompt]
set console on

Cetin