Hi,

My application need to use the printer driver to print to the
printer. However, I also need to check that printer COM port
status by their individual pin on the COM port.

The problem is when my printer driver is install on that
COM port, I can't query that printer COM port pin status.

If I change that printer COM port to another COM port,
I can query the individual pin status of that printer
COM port.

Any way to had the printer driver and still query the
individual pin status that of printer COM port ?