It looks like if you strip all of the mouse related code out of your frames ruby code, then the mouse pointer behaves as you want it to. I'm not sure why you would have had mouse code here to begin with, since it looks like these are just to make the application pretty.

On your second issue, if you ...

Well, I don't know about your machine, but on mine I cannot set any ports to COM0. Every other number from 1-255 is available though. So, I still suspect that COM0 is not allowed.

So, I repeat, given that I do not have a COM0 on my machine (and couldn't map one to it even if I wanted to), why does ...

But, in my case, I don't have a real or virtual port on COM0, at least according to device manager.

Thanks.

I just noticed that the list of ports on the COM Port module includes COM0. Can anyone think of why this would be, since AFAIK COM0 is not allowed, and numbering usually starts at COM1? I know that my machine certainly does not have COM0 available.

I'm using V3.0.2.

Thanks.

Would it be possible to create a COM port object that has support for controlling the DTR, and RTS control lines? This would be useful for communicating via RS-485, which is usually half-duplex, so one of the control lines is usually used to enable the output drivers of the RS-485 transceiver ...