From Forum Nokia Wiki

ID	CS001427	Creation date	June 16, 2009
Platform	S60 3rd Edition, FP1, FP2 S60 5th Edition	Tested on devices	Nokia 5800 XpressMusic
Category	Qt for Symbian	Subcategory	Base/System

Keywords (APIs, classes, methods, functions): QThread

Overview

This code snippet demonstrates how to implement platform-independent threads in Qt by using the QThread class. Instead of starting in main(), the execution of QThreads begins in run(). By default, run() starts the event loop by calling exec().

Note: In order to use this code, you need to have Qt for S60 installed on your platform.

Preconditions

• Install latest Qt for S60 see Qt for S60 - Installation packages
• Check this link for installation guide: How to install the package.
• Go through this article: Getting started with Qt for S60

Header (mythread.h)

#include <QObject>
#include <QThread>
 
class MyThread : public QThread
    {
    Q_OBJECT
 
    public:
        MyThread(QObject* parent = 0);
        virtual ~MyThread();
 
    public: // From QThread
        void run();
 
    signals:
        void dataChanged();
 
    public slots:
        void setData(int someData);
 
    private:
        int data;
    };

Source (mythread.cpp)

#include "mythread.h"
 
MyThread::MyThread(QObject* parent) : QThread(parent)
    {
    }
 
MyThread::~MyThread()
    {
    }
 
void MyThread::run()
    {
    // TODO: there you can run some part of your code in 
    // different thread that rest of the application
 
    // You can create needed classes here or also in MyThread construction.
 
    // Thread enters the event loop and waits until exit() is called
    exec();
    }
 
void MyThread::setData(int someData)
    {
    data = someData;
 
    emit dataChanged();
    }

Starting thread

thread = new MyThread(this);
thread->start();

See also

• CS001428 - Using your own class as a signal and slot parameter in QThread
• For more information about QThread, see QThread Class Reference.

Postconditions

A part of the code is executed in a separate thread.