C++: Create a simple QT example to trigger a function in the main-thread by a signal from QThread

I need a simple QT example to trigger a function in the main-thread by a signal from QThread. Use the Signal/Slot principle. As the base, just use in QT-Creator the standard QWidget application (QMainWindow). 1. start a new QThread. 2. in the QThread start a while(1) loop that should trigger every 3 seconds a funktion call in the MainThread. 3. The function in the MainThread is triggert by the trigger in the while(1) loop in the Qthread. This update the lable on [login to view URL] int count = 0; // counted label updates // The loop in the QThread: while(1) { count++; QThread::sleep(3); // trigger the function in Main-Thread here ! } // The function in the mainwindow-Thread(mainwindow): ui→label→setText(count); // update the label Thank you for looking, I look forward to hearing from you