Good Day
美好的一天
I'm trying to send data to a comport "COM1". A generic printer driver is set up on comport "COM1". When sending data to this port I receive a run-time error '8015: Could not set comm state, there maybe one or more invalid communications parameters'. After clicking ok to that error message i get another error, run-time error '8018: Operation valid only when the port is open'. I believe this issue can be resolve because in Command Prompt I can copy a text file to the port with the command "copy C:\textfile.txt COM1" and it works without any issues. That's my situation.I'm trying to send data to a
