Pop up a QMessageBox from a QThread

[Macro]

I'm in a thread and I would like to pop up a QMessageBox displaying a Text when a QPushButton is clicked, how do I do it?
Here's my code...

myThread.h

@#ifndef MYTHREAD_H
#define MYTHREAD_H

#include <QWidget>

namespace Ui {
class myThread;
}

class myThread: public QWidget
{
Q_OBJECT

public:
explicit myThread(QWidget *parent = 0);
~myThread();

private slots:
void on_pushButton_clicked();
void workThread();
};

#endif // MYTHREAD_H@

myThread.cpp

@#include "myThread.h"
#include "WorkThread.h"
#include <QThread>

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

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

void myThread::on_pushButton_clicked()
{
workThread();
}

void myThread::workThread()
{
WorkThread *worker = new WorkThread(this);
QThread *workerThread = new QThread(this);

connect(workerThread, &QThread::started, worker, &WorkThread::doWork);
worker->moveToThread(workerThread);

workerThread->start();

}@

WorkThread.h

@#ifndef WORKTHREAD_H
#define WORKTHREAD_H

#include <QObject>

class WorkThread : public QObject
{
Q_OBJECT
public:
explicit WorkThread(QWidget *parentWidget, QObject *parent = 0);

public slots:
void doWork();

private:
QWidget *parentWidget;
};

#endif // WORKTHREAD_H@

WorkThread.cpp

@#include "WorkThread.h"
#include <QMessageBox>

WorkThread::WorkThread(QWidget *parentWidget, QObject *parent) :
QObject(parent)
{
}

void WorkThread::doWork()
{
QMessageBox *mBox = new QMessageBox(parentWidget);
mBox->setText("This is my Text");
}@

Here my application gets crashed which says that widgets must be created in the GUI Thread? Please Suggest.

[SGaist]

Hi,

You can't create widgets in any other thread than the main thread (the one from app.exec()) If you want to popup a message box based on something happening in a thread, you must emit a signal from that thread back to e.g. your main window and use your message box there