Qextserialport library issue

[roboterprogrammer]

Hello,

I tried to include this
http://code.google.com/p/qextserialport/wiki/QextSerialPort_1_2_Beta2

but i dont know how to declare
@ QextSerialPort *pport("COM");
@
in the headerfile.

i have the headerfile:
@#ifndef COMPORT_H
#define COMPORT_H
#include <QMainWindow>

namespace Ui {
class comport;
}

class comport : public QMainWindow
{
Q_OBJECT

public:
explicit comport(QWidget *parent = 0);
~comport();
QextSerialPort *pport("COM");

public slots:
void onDataAvailable();
void MyClass();
private:
Ui::comport *ui;
};

#endif // COMPORT_H
@

and cpp file
@

#include "comport.h"
#include "ui_comport.h"
#include "qextserialport.h"

comport::comport(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::comport)
{
ui->setupUi(this);
}

comport::~comport()
{
delete ui;
}

...
comport::MyClass()
{
// port = new QextSerialPort("COM1");
// connect(port, SIGNAL(readyRead()), this, SLOT(onDataAvailable()));
// port->open();
}

void comport::onDataAvailable()
{
// QByteArray data = port->readAll();
// processNewData(usbdata);
}
@

and included
include(C:\qextserialport\qextserialport.pri)
to the project file *.pro

when i want to compile i get
@C:\Dokumente und Einstellungen\remy\Desktop\qextserialport-1.2beta2\com_port-build-desktop-Qt_4_8_0_for_Desktop_-_MinGW__Qt_SDK__Debug..\com_port\comport.h:16: Fehler:ISO C++ forbids declaration of 'QextSerialPort' with no type
@

s.o. knows how to declare it right in the headerfile?

thanks

[edit: code tags corrected, koahnig]

[koahnig]

You need to include QextSerialPort already in comport.h .