#include <QtCore/QCoreApplication>  
#include <QtCore/QObject>  
#include <QtCore/QThread>  
#include <QtCore/QDebug>   
class Dummy :public QObject
{      
         Q_OBJECT  
public:     Dummy (QObject* parent=0):QObject (parent)     {}  
public slots :    
         void emitsig ()    
        {       
                 emit sig ();      
        }
signals :    
         void sig ();
};  

class Object :public QObject
{      
         Q_OBJECT  
public:
         Object(){}
public slots :
         void slot ()
        {   
                 qDebug()<<"from thread slot:" <<QThread:: currentThreadId();      
        }  
};   
#include "main.moc"
int main (int argc, char *argv[])
{     
         QCoreApplication a (argc, argv);      
         qDebug()<<"main thread:"<<QThread:: currentThreadId();     
         QThread thread ;      
         Object obj ;      
         Dummy dummy ;      
         obj.moveToThread (&thread);     
         QObject::connect (&dummy, SIGNAL(sig ()), &obj, SLOT(slot ()));     
         thread.start ();      
         dummy.emitsig ();      
         return a .exec();
}