QProcess and Qtextedit problem

[skumar434]

Hi All ,

First of all let me explain what I am tring to achive here

"I am tring to update the output of the Qprocess which runs the perl script to a textEdit"
Which should look like qprocess is updateing it runtime.


Please find some of the main code

#include <QtGui>

#include "testcasefm.h"


testCaseFm::testCaseFm( QWidget * parent ): QWidget( parent ),scriptProcess(NULL)
{
setupUi(this);
counter =0 ;
scriptProcess = new QProcess( this );
scriptProcess->setProcessChannelMode(QProcess::MergedChannels) ;
label_targetName->setFocus();

testCaseFm::init();
//connect(label_targetName ,SIGNAL(setFocus()),this,SLOT(init()));
connect(pushButton_openScript ,SIGNAL(clicked()),this,SLOT(pB_openScript()));
connect(pushButton_runScript ,SIGNAL(clicked()),this,SLOT(pB_runScript()));
connect(pushButton_stopScript ,SIGNAL(clicked()),this,SLOT(pB_stopScript()));
connect(pushButton_closeTestcasefm ,SIGNAL(clicked()),this,SLOT(pB_close()));
connect(scriptProcess ,SIGNAL(readyReadStandardOutput()),this,SLOT(updat eOutputTextEdit()));
connect(scriptProcess ,SIGNAL(readyReadStandardError()),this,SLOT(update ErrorOutputTextEdit()));
connect(scriptProcess ,SIGNAL(finished(int, QProcess::ExitStatus)),this,SLOT(processFinished(i nt, QProcess::ExitStatus)));
connect(scriptProcess ,SIGNAL(error(QProcess::ProcessError)),this,SLOT(p rocessError(QProcess::ProcessError)));

}

testCaseFm::~testCaseFm()
{
close();
qDebug() << counter;
}
odes

The method which updates the textedit

void testCaseFm::updateOutputTextEdit()
{
// scriptProcess->setReadChannel(QProcess::StandardOutput);
QByteArray newData = scriptProcess->readAllStandardOutput();
QString text = textEdit->toPlainText()
+QString::fromLocal8Bit(newData);
textEdit->append(text);
counter++;


}


void testCaseFm::updateErrorOutputTextEdit()
{
// textEdit->append("----------Stard Error---------");
// scriptProcess->setReadChannel(QProcess::StandardError);
QByteArray newData = scriptProcess->readAllStandardError();
QString text_error = textEdit->toPlainText()
+QString::fromLocal8Bit(newData);
textEdit->append(text_error);
}

The output which I am getting from the Qprocess

/dev/nst

/dev/nst

/dev/nst

/dev/nst

/dev/nst

/dev/nst

/dev/nst
FEWrite_diags_port2000_1
/dev/nst: No such file or directory
/dev/nst: No such file or directory
dd: opening `/root/logs/FEWrite_diags_port2000_1': No such file or directory


The actual out put when I run the script on the linbux box

/dev/nst
FEWrite_diags_port2000_1
/dev/nst: No such file or directory
/dev/nst: No such file or directory
dd: opening `/root/logs/FEWrite_diags_port2000_1': No such file or directory


I suspect the output method is going into loop but I dont know why ...

I would appricate any suggestion ...plz

One more thing i wanted to know is " can I update the textedit which is in main thread
sing new thread ".