QextSerialPort and modem

[kaszewczyk]

This is class where i hold all the port informations as a number of data bits, stop bits etc

[squidge]

portName is a class?

[kaszewczyk]

Sorry mate i get it wrong it was late when i read your post, the portName is QString with port name chosen by user. The portInformations is object of class where i hold all port informations it has only public members. Sorry agin for my mistake.

Best Regards
kaszewczyk

[Goldmmbr]

what is the exact value of portName used when calling:

this->port = new QextSerialPort(this->portInformations->portName);

this->port = new QextSerialPort(this->portInformations->portName);

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are you sure that port exists on your system? and/or it is enabled in bios?

[kaszewczyk]

Yes, i am sure because i can use system Hyperterminal with that port

[Lesiok]

Please show us what is in this->portInformations->portName.
For higher number of COM ports You must specify port name as "\\.\COMnn". I don't remember what is boundary value. Of course You can use this long name of COM port with all numbers.

[kaszewczyk]

This PortInformations look like this:

class PortInformations{
public:
QString portName;
QString nrOfDataBits:
//etc...
}

class PortInformations{
public:
QString portName;
QString nrOfDataBits:
//etc...
}

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This could be a problem because the modem is on COM40 but i dont know how to add "\\.\" to QString cus i cand doing by operator + ?

[squidge]

portName.prepend("\\\\.\\") ?

[Lesiok]

This PortInformations look like this:

class PortInformations{
public:
QString portName;
QString nrOfDataBits:
//etc...
}

class PortInformations{
public:
QString portName;
QString nrOfDataBits:
//etc...
}

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This could be a problem because the modem is on COM40 but i dont know how to add "\\.\" to QString cus i cand doing by operator + ?

QString CreatePortName( int portNumber )
{
    return QString("\\\\.\\%1").arg(portNumber);
}

QString CreatePortName( int portNumber )
{
    return QString("\\\\.\\%1").arg(portNumber);
}

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[kaszewczyk]

Thanks it work

Best Regards
kaszewczyk

[squidge]

It would have been solved much earlier too if you had given us the information

I gave up asking, two more people asked the same question and yet you still held out.

Maybe next time?