textBrowser not show anything

Why codes are not running. There is not any affect on textBrowser...?



#include <QProcess>
#include "mainwindow.h"
#include "ui_mainwindow.h"

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

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

void MainWindow::on_exit_clicked()
{
this->close();
}

void MainWindow::on_button_clicked()
{
QProcess *p = new QProcess( this );

if (p)
{
p->setEnvironment( QProcess::systemEnvironment() );
p->setProcessChannelMode( QProcess::MergedChannels );
connect( p, SIGNAL(readyReadStandardOutput()), this, SLOT(ReadOut()) );
connect( p, SIGNAL(readyReadStandardError()), this, SLOT(ReadErr()) );
p->execute("sh /home/user/Desktop/file.sh");
p->waitForStarted();


}
}

void MainWindow::ReadOut()
{

QProcess *p = dynamic_cast<QProcess *>( sender() );

if (p)
ui->textBrowser->append( p->readAllStandardOutput() );
}

void MainWindow::ReadErr()
{

QProcess *p = dynamic_cast<QProcess *>( sender() );

if (p)
ui->textBrowser->append( p->readAllStandardError() );
}

Use QProcess::start(), instead of QProcess::execute().

Code:

---

void MainWindow::on_button_clicked()
{
    QProcess *p = new QProcess( this );
 
    if (p)
    {
        p->setEnvironment( QProcess::systemEnvironment() );
        p->setProcessChannelMode( QProcess::MergedChannels );
        connect( p, SIGNAL(readyReadStandardOutput()), this, SLOT(ReadOut()) );
        connect( p, SIGNAL(readyReadStandardError()), this, SLOT(ReadErr()) );
        //p->execute("sh /home/user/Desktop/file.sh");
        p->start("sh /home/user/Desktop/file.sh");
        p->waitForStarted();
    }
}

---

QProcess::execute(), is a static call and will start another new process (which is not p), you actualy need to connect to the signals of the new process created in side execute() function, but you cannot access it.

Thank you very much...