unable to terminate QProcess in QThread, returns wrong status

[sector]

Hello,

I'm trying to launch process using QProcess in QThread, this work with no problem. However, if I check status of the running process, it's always 0 (QProcess::NotRunning).

I attach zipped example which ilustrates the problem, most interesting parts of code:

qmythread.cpp

#include <QProcess>
#include "qmythread.h"
 
QMyThread::QMyThread(QObject *parent)
: QThread(parent)
{
}
 
void QMyThread::setParameters(const QString& command) 
{
	cmd = command;
}
 
void QMyThread::run()
{
	myProcess.execute(cmd);
	exec();
}
 
void QMyThread::teminateProcess() 
{
	qDebug() << "Attempt to terminate..";
	myProcess.terminate();
}
 
int QMyThread::stateOfProcess()
{
	return myProcess.state();
}

#include <QProcess>
#include "qmythread.h"

QMyThread::QMyThread(QObject *parent)
: QThread(parent)
{
}

void QMyThread::setParameters(const QString& command) 
{
	cmd = command;
}

void QMyThread::run()
{
	myProcess.execute(cmd);
	exec();
}

void QMyThread::teminateProcess() 
{
	qDebug() << "Attempt to terminate..";
	myProcess.terminate();
}

int QMyThread::stateOfProcess()
{
	return myProcess.state();
}

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myqtapp.cpp

#include <QtGui>
 
#include "myqtapp.h"
#include "qmythread.h"
 
 
myQtApp::myQtApp()
{
	setupUi(this);
	connect( pushButton_launch, SIGNAL( clicked() ), this, SLOT( launch() ) );
	connect( pushButton, SIGNAL( clicked() ), this, SLOT( stop() ) );
}
 
 
void myQtApp::launch()
{
	qDebug() << "Launching program..";
 
	thread = new QMyThread(this);
	thread->setParameters("regedit.exe");
	thread->start();
}
 
 
void myQtApp::stop()
{
	if ( thread->isRunning() )
	{
		qDebug() << "Thread is running..";
		qDebug() << "State of process: " << thread->stateOfProcess();
		// state of process always returns 0 (QProcess::NotRunning), even if it's running
		thread->teminateProcess();
		// attempt to terminate process running in thread is unsuccessful
	}
	else 
	{
		qDebug() << "Error, thread not running";
	}
}

#include <QtGui>

#include "myqtapp.h"
#include "qmythread.h"


myQtApp::myQtApp()
{
	setupUi(this);
	connect( pushButton_launch, SIGNAL( clicked() ), this, SLOT( launch() ) );
	connect( pushButton, SIGNAL( clicked() ), this, SLOT( stop() ) );
}


void myQtApp::launch()
{
	qDebug() << "Launching program..";

	thread = new QMyThread(this);
	thread->setParameters("regedit.exe");
	thread->start();
}


void myQtApp::stop()
{
	if ( thread->isRunning() )
	{
		qDebug() << "Thread is running..";
		qDebug() << "State of process: " << thread->stateOfProcess();
		// state of process always returns 0 (QProcess::NotRunning), even if it's running
		thread->teminateProcess();
		// attempt to terminate process running in thread is unsuccessful
	}
	else 
	{
		qDebug() << "Error, thread not running";
	}
}

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This might be a bug in QT but I don't know if I'm overlooking something or if there is something wrong with my code.

I use Qt 4.2.0-tp1 opensource, mingw, win2000. Thanks for your replies.