it would be too easy.
MSCOMMControlInstance.PortOpen keeps true value even if you power the device with a comm port down.


>>>>Does anyone know if it's possible to regularly check a comm port whether it it is still open? I tried to open a port in the form, then disconnect the device that has a comm port but the form still thinks that the port is open.
>>>>Thanks for any idea.
>>>
>>>How you open and close COM?
>>I am using mscomm activex control.
>

>IF MSCOMMControlInstance.PortOpen && Port is opened
>   do whatever you want to do when the port is poened
>ENDIF
>
>***
>MSCOMMControlInstance.PortOpen = .f. && Close Port
>