Can command line disable GUI during /upload?

A client is attempting to automate an scp transfer using winscp3. When the following command line is issued:

winscp3 mysession@myhost /upload testfile.txt

GUI windows pop-up to confirm the copy, etc. Is there a way to make the transfer 100% automatic, with no user intervention required?

Thanks,
Kent Dorsey

WinSCP lacks scripting support. It will be added eventualy. Till then it think that using some command line SCP/SFTP client (like PSCP of PSFTP) is better choice.

/upload parameter was added for Explorer's "Send to" menu support. It was not intended for automation.