Signals and slots configuration

It is not only possible to connect one signal to one slot, but to connect one signal to more than one slot. This involves repeating the QObject::connect() call and, in each instance, specifying the slot that should be called when a particular signal has been emitted.

Single signal, multiple slots

In this section, we shall concern ourselves with how to connect a single signal to multiple slots.

Examine the following program:

#include <QApplication>
#include <QVBoxLayout>
#include <QLabel>
#include <QDial>
#include <QLCDNumber>
int main(int argc, char *argv[])
{
   QApplication app(argc, argv);
   QWidget *window = new QWidget;
   QVBoxLayout *layout = new QVBoxLayout;
   QLabel...