Modify COM Port device name at runtime (Windows)

I'm not sure if this is possible but my requirement is this.

On startup, my application swaps COM1 to COMV1, listens to the output interprets the data and pa开发者_Python百科sses it through to COM1.

On shutdown, my applications swaps COMV1 back to COM1 so applications can continue to use it as normal.

Thanks for any help, Richard

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Not sure if this will help.

Null-modem emulator (com0com)