serial port programming in qt

[sar_van81]

high_flyer:

Oops. it still not working. This is my code:

ConnectWidget::ConnectWidget( QWidget *parent, const char *name )
: QWidget( parent, name),m_note(NULL)
{
setBackgroundColor( white );
setMinimumSize(640,480 );

m_note= new QextSerialPort("/dev/ttyS0");
if(m_note)
{
m_note->setBaudRate(BAUD115200);
m_note->setParity(PAR_NONE);
m_note->setDataBits(DATA_8);
m_note->setStopBits(STOP_1);
m_note->open(IO_ReadOnly);
}
printf("\n serial port openned \n");
}

Is this what you suggested?

[high_flyer]

what error? segmentation falut?
Are there any other methods do the Widget class?
Try setting debug messages along the code or run in a debugger and see where the applciation crashes.

And please use code tags.

[sar_van81]

Sir,

I modified the code. Now i have onely three lines in my code:

class ConnectWidget : public QWidget
{
public:
    ConnectWidget( QWidget *parent=0, const char *name=0 );
private:
    QextSerialPort *m_note;
};
ConnectWidget::ConnectWidget( QWidget *parent, const char *name )
    : QWidget( parent, name),m_note(NULL)
{
       	setMinimumSize(640,480 );
	m_note= new QextSerialPort("/dev/ttyS0");
	printf("\n serialport openned \n");
}

class ConnectWidget : public QWidget
{
public:
    ConnectWidget( QWidget *parent=0, const char *name=0 );
private:
    QextSerialPort *m_note;
};
ConnectWidget::ConnectWidget( QWidget *parent, const char *name )
    : QWidget( parent, name),m_note(NULL)
{
       	setMinimumSize(640,480 );
	m_note= new QextSerialPort("/dev/ttyS0");
	printf("\n serialport openned \n");
}

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I have not added the settings of the serial port.As i found that starting from this line the error pops up. the following is the error message:

suse:/home/qtprograms/roughserial # ./roughserial -qws
Connected to VFB server: 640 x 480 x 32
Segmentation fault
suse:/home/qtprograms/roughserial #